Previous HNEI Research

Projects and related publications are organized by research area in reverse-chronological order. This research was completed at HNEI previously and work in these projects/fields are no longer active.

Anaerobic Digestion, Bio-Oil, and Biocontamination

High Rate Anaerobic-Aerobic Digestion (2009-2021)
Produced a master design, inclusive of PID diagrams, costing, manufacturing, and shipping to build and install a wastewater treatment system designed from past research and commercial demonstration projects.

Bio-Oil Extraction (2009-2018)
Investigated and patented a multi-component process that extracted bio-oils, protein, fermentable sugars, and high value metabolites from oil-bearing biomass using ionic liquid based solvents.

Water, Energy, and Soil Sustainability (2011-2013)
Supported integrated effort of State government, industry, venture capital, legal/regulatory authorities, private sector, and UH to pursue collaborative projects striving for water, energy, and soil sustainability in Hawai‘i.

Papers and Proceedings

2022, L. Zhang, Q.X. Li, X. Li, B. Yoza, L. Zhou, Toxicity of Nanoparticles of AgO, La₂O₃, CuO, AgO–Fe₃O₄, Ag-Graphene, and GO–Cu–AgO to the Fungus Moniliella wahieum Y12^T Isolated from Degraded Biodiesel and the Bacterium Escherichia coli, Journal of Biomedical Nanotechnology, Vol. 18, Issue 3, pp. 928-938.
2022, C.A. Ortega Ramírez, T. Ching, B. Yoza, Q.X. Li, Glycerol-assisted degradation of dibenzothiophene by Paraburkholderia sp. C3 is associated with polyhydroxyalkanoate granulation, Chemosphere, Vol. 291, Part 3, Paper 133054.
2021, K. Sabate, S. Masutani, B. Yoza, Microbiological degradation of macroalgae waste and its potential considerations for agricultural applications, Journal of Applied Phycology, Vol. 33, Issue 4, pp. 2645-2654.
2021, J.M. Wells, S.E. Crow, S.K. Khanal, S. Turn, A. Hashimoto, J. Kiniry, N. Meki, Anaerobic Digestion and Hot Water Pretreatment of Tropically Grown C4 Energy Grasses: Mass, Carbon, and Energy Conversions from Field Biomass to Fuels, Agronomy, Vol. 11, Issue 5, Paper 838. (Open Access: PDF)
2020, X. Wang, J. Ming, C-M. Chen, B.A. Yoza, Q-W. Li, J-H. Liang, G.M. Gadd, Q-H. Wang, Rapid aerobic granulation using biochar for the treatment of petroleum refinery wastewater, Petroleum Science, Vol. 17, pp. 1411-1421. (Open Access: PDF)
2020, Q. Wang, J. Liang, S. Zhang, B.A. Yoza, Q.X. Li, Y. Zhan, H. Ye, P. Zhao, C. Chen, Characteristics of bacterial populations in an industrial scale petrochemical wastewater treatment plant: Composition, function and their association with environmental factors, Environmental Research, Vol. 189, Paper 109939.
2020, J. Liang, Q. Wang, B.A. Yoza, Q. X.Li, C. Chen, J. Ming, J. Yu, J. Li, M. Ke, Rapid granulation using calcium sulfate and polymers for refractory wastewater treatment in up-flow anaerobic sludge blanket reactor, Bioresource Technology, Vol. 305, Paper 123084.
2020, J. Ming, Q. Wang, B.A. Yoza, J. Liang, H. Guo, J. Li, S. Guo, C. Chen, Bioreactor performance using biochar and its effect on aerobic granulation, Bioresource Technology, Vol. 300, Paper 122620.
2020, S. Lin, K. Rong, K.M. Lamichhane, R.W. Babcock, M. Kirs, M.J. Cooney, Anaerobic-aerobic biofilm-based digestion of chemical contaminants of emerging concern (CEC) and pathogen indicator organisms in synthetic wastewater, Bioresource Technology, Vol. 299, Paper 122554.
2020, L. Liu, Y. Li, B.A. Yoza, K. Hao, Q.X. Li, Y. Li, Q. Wang, S. Guo, C. Chen, A char-clay composite catalyst derived from spent bleaching earth for efficient ozonation of recalcitrants in water, Science of The Total Environment, Vol. 699, Paper 134395.
2019, J. Liang, Q. Wang, B.A. Yoza, Q.X. Li, M. Ke, C. Chen, Degradation of guar in an up-flow anaerobic sludge blanket reactor: Impacts of salinity on performance robustness, granulation and microbial community, Chemosphere, Vol. 232, pp. 327-336.
2019, W. Ma, J. Hu, B.A. Yoza, Q. Wang, X. Zhang, Q.X. Li, S. Guo, C. Chen, Kaolinite based catalysts for efficient ozonation of recalcitrant organic chemicals in water, Applied Clay Science, Vol. 175, pp. 159-168.
2019, M.J. Cooney, K. Rong, K.M. Lamichhane, Cross comparative analysis of liquid phase anaerobic digestion, Journal of Water Process Engineering, Vol. 29, Article 100765.
2019, Y. Xu, Q. Wang, B.A. Yoza, Q.X. Li, Y. Kou, Y. Tang, H. Ye, Y. Li, C. Chen, Catalytic Ozonation of Recalcitrant Organic Chemicals in Water Using Vanadium Oxides Loaded ZSM-5 Zeolites, Frontiers in Chemistry, Vol. 7, Article 384. (Open Access: PDF)
2019, J. Liang, C. Chen, B.A. Yoza, Y. Liang, J. Li, M. Ke, Q. Wang, Hydrolysis and acidification of activated sludge from a petroleum refinery, Petroleum Science, Vol. 16, Issue 2, pp. 428-438. (Open Access: PDF)
2019, C. Chen, X. Yan, Y. Xu, B.A. Yoza, X. Wang, Y. Kou, H. Ye, Q. Wang, Q.X. Li, Activated petroleum waste sludge biochar for efficient catalytic ozonation of refinery wastewater, Science of The Total Environment, Vol. 651, Part 2, pp. 2631-2640.
2019, C. Chen, J. Ming, B.A. Yoza, J. Liang, Q.X. Li, H, Guo, Z. Liu, J. Deng, Q. Wang, Characterization of aerobic granular sludge used for the treatment of petroleum wastewater, Bioresource Technology, Vol. 271, pp. 353-359.
2018, Q. Wang, J. Liang, Y. Zhan, X. Yao, Z. Liu, Q.X. Li, S. Guo, C. Chen, B.A. Yoza, Treatment of petroleum wastewater using an up‐flow anaerobic sludge blanket (UASB) reactor and turf soil as a support material, Journal of the Chemical Technology & Biotechnology, Vol. 93, Issue 11, pp. 3317-3325.
2018, C. Chen, X. Yao, Q.X. Li, J. Liang, S. Zhang, J. Ming, Z. Liu, J. Deng, B.A. Yoza, Turf soil enhances treatment efficiency and performance of phenolic wastewater in an up-flow anaerobic sludge blanket reactor, Chemosphere, Vol. 204, pp. 227-234.
2018, L. Zhang, L. Zhou, Q.X. Li, H. Liang, H. Qin, S. Masutani, B. Yoza, Toxicity of lanthanum oxide nanoparticles to the fungus Moniliella wahieum Y12^T isolated from biodiesel, Chemosphere, Vol. 199, pp. 495-501.
2018, Y. Wang, W. Ma, B.A. Yoza, Y. Xu, Q.X. Li, C. Chen, Q. Wang, Y. Gao, S. Gao, Y. Zhan, Investigation of Catalytic Ozonation of Recalcitrant Organic Chemicals in Aqueous Solution over Various ZSM-5 Zeolites, Catalysts, Vol. 8 Issue, 1, Paper 128. (Open Access: PDF)
2018, C. Chen, X. Yan, B.A. Yoza, T. Zhou, Y. Li, Y. Zhan, Q. Wang, Q.X. Li, Efficiencies and mechanisms of ZSM5 zeolites loaded with cerium, iron, or manganese oxides for catalytic ozonation of nitrobenzene in water, Science of the Total Environment, Vol. 612, pp. 1424-1432.
2017, C. Chen, J. Liang, B.A. Yoza, Q.X. Li, Y. Zhan, Q. Wang, Evaluation of an up-flow anaerobic sludge bed (UASB) reactor containing diatomite and maifanite for the improved treatment of petroleum wastewater, Bioresource Technology, Vol. 243, pp. 620-627.
2017, C. Ye, T.H. Ching, B.A. Yoza, S. Masutani, Q.X. Li, Cometabolic degradation of blended biodiesel by Moniliella wahieum Y12^T and Byssochlamys nivea M1, International Biodeterioration & Biodegradation, Vol. 125, pp. 166-169.
2017, Y. Chen, C-M. Chen, B.A. Yoza, Q.X. Li, S-H. Guo, P. Wang, S-J. Dong, Q-H. Wang, Efficient ozonation of reverse osmosis concentrates from petroleum refinery wastewater using composite metal oxide-loaded alumina, Petroleum Science, Vol. 14, Issue 3, pp. 605-615. (Open Access: PDF)
2017, K.M. Lamichhane, K. Lewis, K. Rong, R.W. Babcock Jr., M.J. Cooney, Treatment of high strength acidic wastewater using passive pH control, Journal of Water Process Engineering, Vol. 18, pp. 198-201.
2017, Y. Zhan, Q. Wang, C. Chen, J.B. Kim, H. Zhang, B.A. Yoza, Q.X. Li, Potential of wheat bran to promote indigenous microbial enhanced oil recovery, Journal of Industrial Microbiology & Biotechnology, Vol. 44, Issue 6, pp. 845-855. (Open Access: PDF)
2017, S.R.P. Bandlamudi, M.J. Cooney, G.L. Martin, K.M. Benjamin, Molecular Simulation and Experimental Characterization of Ionic-Liquid-Based Cosolvent Extraction Solvents, Industrial & Engineering Chemistry Research, Vol. 56, Issue 11, pp. 3040-3048.
2017, C. Chen, Y. Chen, B.A. Yoza, Y. Du, Y. Wang, Q.X. Li, L. Yi, S. Gio, Q. Wang, Comparison of Efficiencies and Mechanisms of Catalytic Ozonation of Recalcitrant Petroleum Refinery Wastewater by Ce, Mg, and Ce-Mg Oxides Loaded Al₂O₃, Catalysts, Vol. 7, Issue 3, Paper 72. (Open Access: PDF)
2016, L. Postacchini, K.M. Lamichhane, D. Furukawa, R.W. Babcock Jr., F.E. Ciarapica, M.J. Cooney, Life Cycle Assessment Comparison of Activated Sludge, Trickling Filter, and High-Rate Anaerobic-Aerobic Digestion (HRAAD), Water Science & Technology, Vol. 73, Issue 10, pp. 2353-2360. (Open Access: PDF)
2016, M.J. Cooney, K. Lewis, K. Harris, Q. Zhang, T. Yan, Start up performance of biochar packed bed anaerobic digesters, Journal of Water Process Engineering, Vol. 9, pp. e7-e13.
2016, J.L. Deenik, M.J. Cooney, The Potential Benefits and Limitations of Corn Cob and Sewage Sludge Biochars in an Infertile Oxisol, Sustainability, Vol. 8, Issue 2, paper 131. (Open Access: PDF)
2016, T.H. Ching, B.A. Yoza, R. Wang, S. Masutani, S. Donachie, L. Hihara, Q.X. Li, Biodegradation of biodiesel and microbiologically induced corrosion of 1018 steel by Moniliella wahieum Y12, International Biodeterioration & Biodegradation, Vol. 108, pp. 122-126.
2016, C-M. Chen, J-L. Wang, J.B. Kim, Q-H. Wang, J. Wang, B.A. Yoza, Q.X. Li, Laboratory studies of rice bran as a carbon source to stimulate indigenous microorganisms in oil reservoirs, Petroleum Science, Vol. 13, Issue 3, pp. 572-583. (Open Access: PDF)
2016, M.J. Cooney, K. Benjamin, Ionic Liquids in Lipid Extraction and Recovery, in X. Zu, Z. Guo, L-Z. Cheon (eds.) Ionic Liquids in Lipid Processing and Analysis: Opportunities and Challenges, Academic Press and AOCS Press, Vol. 1, Chapter 8, pp. 279-316.
2015, X. He, Q. Zhang, M.J. Cooney, T. Yan, Biodegradation of fat, oil and grease (FOG) deposits under various redox conditions relevant to sewer environment, Applied Microbiology and Biotechnology, Vol. 99, Issue 14, pp. 6059-6068.
2015, C. Chen, B.A. Yoza, H. Chen, Q.X. Li, S. Guo, Manganese Sand Ore Is an Economical and Effective Catalyst for Ozonation of Organic Contaminants in Petrochemical Wastewater, Water, Air, & Soil Pollution, Vol. 226, Issue 6, Article 182.
2015, C. Chen, J. Yu, B.A. Yoza, Q.X. Li, G. Wang, A novel “wastes-treat-wastes” technology: Role and potential of spent fluid catalytic cracking catalyst assisted ozonation of petrochemical wastewater, Journal of Environmental Management, Vol. 152, pp. 58-65.
2015, C. Chen, B.A. Yoza, Y. Wang, P. Wang, Q.X. Li, S. Guo, G. Yan, Catalytic ozonation of petroleum refinery wastewater utilizing Mn-Fe-Cu/Al₂O₃ catalyst, Environmental Science and Pollution Research, Vol. 22, Issue 7, pp. 5552-5562.
2014, R.J. Lopez, S.R. Higgins, E. Pagaling, T. Yan, M.J. Cooney, High rate anaerobic digestion of wastewater separated from grease trap waste, Renewable Energy, Vol. 62, pp. 234-242.
2014, G. Severa, G. Kumar, M.J. Cooney, Corecovery of Lipids and Fermentable Sugars from Rhodosporidium Toruloides Using Ionic Liquid Cosolvents: Application of Recycle to Batch Fermentation, Biotechnology Progress, Vol. 30, Issue 5, pp. 1239-1242.
2014, T.H. Ching, B.A. Yoza, Q.X. Li, Quartet analysis of putative horizontal gene transfer in Crenarchaeota, Journal of Molecular Evolution, Vol. 78, Issue 2, pp. 163-170.
2013, R.M. Harada, B.A. Yoza, S.M. Masutani, Q.X. Li, Diversity of Archaea communities within contaminated sand samples from Johnston Atoll, Bioremediation Journal, Vol. 17, Issue 3, pp. 182-189.
2013, G. Severa, G. Kumar, M.J. Cooney, Corecovery of bio-oil and fermentable sugars from oil-bearing biomass, International Journal of Chemical Engineering, Vol. 2013, Issue 2013, Paper 617274. (Open Access: PDF)
2013, G. Severa, G. Kumar, M. Troung, G. Young, M.J. Cooney, Simultaneous extraction and separation of phorbol esters and bio-oil from Jatropha biomass using ionic liquid-methanol co-solvents, Separation and Purification Technology, Vol. 116, pp. 265-270.
2013, S.R. Higgins, R.J. Lopez, E. Pagaling, T. Yan, M.J. Cooney, Towards a hybrid anaerobic digester-microbial fuel cell integrated energy recovery system: An overview of the development of an electrogenic biofilm, Enzyme and Microbial Technology, Vol. 52, Issues 6-7, pp. 344-351.
2013, B.A. Yoza, E.M. Masutani, The analysis of macroalgae biomass found around Hawai‘i for bioethanol production, Environmental Technology, Vol. 34, Issue 13-14, pp. 1859-1867.
2011, E.M. Masutani, B.A. Yoza, The Potential of Ethanol Production from Ulva fasciata, Journal of Research Institute of Science and Technology, College of Science and Technology, Nihon University, Vol. 126, pp. 1-5. (Open Access: PDF)
2011, E.M. Masutani, B.A. Yoza, Ethanol production from Ulva fasciata, Journal of Research Institute of Science and Technology, College of Science and Technology, Nihon University, Vol. 126, pp. 1-5. (Open Access: PDF)
2011, M.J. Cooney, G. Young, R. Pate, Bio-oil from photosynthetic microalgae: Case study, Bioresource Technology, Vol. 102, Issue 1, pp. 166-177.
2010, G. Young, F. Nippgen, S. Titterbrandt, M.J. Cooney, Lipid extraction from biomass using co-solvent mixtures of ionic liquids and polar covalent molecules, separation and purification technology, Separation and Purification Technology, Vol. 72, Issue 1, pp. 118-121.
2009, M.J. Cooney, G. Young, N. Nagle, Extraction of bio-oils from microalgae, Separation & Purification Reviews, Vol. 38, Issue 4, pp. 291-325. (Open Access: PDF)
2009, G.L. Martin, J.A. Ross, S.D. Minteer, D.M. Jameson, M.J. Cooney, Fluorescence characterization of chemical microenvironments in hydrophobically modified chitosan, Carbohydrate Polymers, Vol. 77, Issue 4, pp. 695-702.
2009, K.H. Sjoholm, M. Cooney, S.D. Minteer, Effects of degree of deacetylation on enzyme immobilization in hydrophobically modified chitosan, Carbohydrate Polymers, Vol. 77, Issue 2, pp. 420-424.
2009, G.M. Martin, S.D. Minteer, M.J. Cooney, Spatial distribution of Malate dehydrogenase in chitosan scaffolds, ACS Applied Materials & Interfaces, Vol. 1, Issue 2, pp. 367-372.
2009, M.J. Cooney, J. Petermann, C. Lau, S.D. Minteer, Characterization and evaluation of hydrophobically modified chitosan scaffolds: Towards design of enzyme immobilized flow-through electrodes, Carbohydrate Polymers, Vol. 75, Issue 3, pp. 428-435.
2008, V. Svoboda, B.Y. Liaw, In situ transient study of polymer films growth via simultaneous correlation of charge, mass, and ellipsometric measurements, Pure and Applied Chemistry, Vol. 80, Issue 11, pp. 2439-2449.
2008, M.J. Cooney, B.Y. Liaw, In situ Characterization Techniques for Design and Evaluation of Micro- and Nano-Enzyme-Catalyzed Power Sources, in J. Kim, S.H. Kim, P. Wang (eds.) Biomolecular Catalysis, American Chemical Society, Vol. 986, Chapter 19, pp. 289-333.

Bioplastics

PHA Bioplastics from Biomass (2015-2022)
Developed a biorefinery technology to produce biochar-like solid fuel and bioplastics from cellulosic biomass.

Liquid Fuels from Synthesis Gas (2012-2020)
Developed technologies to produce high-grade liquid fuel from synthesis gas derived from agricultural wastes.

Papers and Proceedings

2021, G. Mohan, R.L. Johnson, J. Yu, Conversion of Pine Sawdust into Polyhydroxyalkanoate Bioplastics, ACS Sustainable Chemistry & Engineering, Vol. 9, Issue 25, pp. 8383-8392.
2021, H. Zhang, S. Kang, J. Fu, Y. He, X. Huang, J. Chang, Y. Xu, Valorization of poly(butylene succinate) to tetrahydrofuran via one-pot catalytic hydrogenolysis, Reaction Chemistry & Engineering, Vol. 6, Issue 3, pp. 465-470.
2020, P-C. Kuo, J. Yu, Process simulation and techno-economic analysis for production of industrial sugars from lignocellulosic biomass, Industrial Crops and Products, Vol. 155, Paper 112783.
2019, J. Yu, Y. Lu, Carbon dioxide fixation by a hydrogen-oxidizing bacterium: Biomass yield, reversal respiratory quotient, stoichiometric equations and bioenergetics, Biochemical Engineering Journal, Vol. 152, Article 107369.
2018, J. Yu, P. Munasinghe, Gas Fermentation Enhancement for Chemolithotrophic Growth of Cupriavidus necator on Carbon Dioxide, Fermentation, Vol. 4, Issue 3, Paper 63. (Open Access: PDF)
2018, J. Yu, Fixation of carbon dioxide by a hydrogen-oxidizing bacterium for value-added products, World Journal of Microbiology and Biotechnology, Vol. 34, Issue 7, Article 89.
2018, J. Yu, A Green Plastic and Drop-in Transportation Fuels from Carbon Dioxide and Renewable Energy, Proceeding of the TechConnect World Innovation Conference & Expo, TechConnect Briefs, Vol. 2 Materials for Energy, Efficiency and Sustainability: TechConnect Briefs 2018, pp. 187-190. (Open Access: PDF)
2018, S. Kang, J. Yu, Maintenance of a Highly Active Solid Acid Catalyst in Sugar Beet Molasses for Levulinic Acid Production, Sugar Tech, Vol. 20, Issue 2, pp. 182-193.
2017, Y. Lu, J. Yu, Comparsion analysis on the energy efficiencies and biomass yields in microbial CO₂ fixation, Process Biochemistry, Vol. 62, pp. 151-160.
2017, S. Kang, J. Yu, Maintenance of a Highly Active Solid Acid Catalyst in Sugar Beet Molasses for Levulinic Acid Production, SugarTech, Vol.20, pp. 1-12.
2017, Y. Lu, J. Yu, Gas mass transfer with microbial CO₂ fixation and poly(3-hydroxybutyrate) synthesis in a packed bed bioreactor, Biochemical Engineering Journal, Vol. 122, pp. 13-21.
2016, S. Kang, J. Yu, An intensified reaction technology for high levulinic acid concentration from lignocellulosic biomass, Biomass and Bioenergy, Vol. 95, pp. 214-220.
2015, S. Kang, J. Yu, Effect of Methanol on Formation of Levulinates from Cellulosic Biomass, Industrial & Engineering Chemistry Research, Vol. 54, Issue 46, pp. 11552-11559.
2015, S. Kang, J. Yu, A gasoline-grade biofuel formed from renewable polyhydroxybutyrate on solid phosphoric acid, Fuel, Vol. 160, pp. 282-290.
2015, S. Kang, J. Yu, Reaction routes in catalytic reforming of poly(3-hydroxybutyrate) into renewable hydrocarbon oil, RSC Advances, Vol. 5, Issue 38, pp. 30005-30013.
2015, S. Kang, J. Yu, Hydrophobic organic compounds from hydrothermal liquefaction of bacterial biomass, Biomass and Bioenergy, Vol. 74, pp. 92-95.
2014, N. Tanadchangsaeng, J. Yu, Thermal stability and degradation of biological terpolyesters over a broad temperature range, Journal of Applied Polymer Science, Vol. 132, Issue 13, pp. 41715-41815.
2014, S. Kang, J. Yu, One-pot production of hydrocarbon oil from poly(3-hydroxybutyrate), RSC Advances, Vol. 4, Issue 28, pp. 14320-14327.
2014, P. Tang, J. Yu, Kinetic analysis on deactivation of a solid Brønsted acid catalyst in conversion of sucrose to levulinic acid, Industrial & Engineering Chemistry Research, Vol. 53, Issue 29, pp. 11629-11637.
2014, J. Yu, Bio-based products from solar energy and carbon dioxide, Trends in Biotechnology, Vol. 32, Issue 1, pp. 5-10.
2013, J. Yu, A. Dow, S. Pingali, The energy efficiency of carbon dioxide fixation by a hydrogen-oxidizing bacterium, International Journal of Hydrogen Energy, Vol. 38, Issue 21, pp. 8683-8690.
2013, J. Yu, Production of Polyhydroxyalkanoates in Biomass Refining, in S-T. Yang, H. El-Ensashy, N. Thongchul (eds.) Bioprocessing Technologies in Biorefinery for Sustainable Production of Fuels, Chemicals, and Polymers, John Wiley & Sons, Inc., Chapter 22, pp. 415-426.
2013, N. Tanadchangsaeng, J. Yu, Miscibility of natural polyhydroxyalkanoate blend with controllable material properties, Journal of Applied Polymer Science, Vol. 129, Issue 4, pp. 2004-2016.
2012, N. Tanadchangsaeng, J. Yu, Microbial synthesis of polyhydroxybutyrate from glycerol: Gluconeogenesis, molecular weight and material properties of biopolyester, Biotechnology & Bioengineering, Vol. 109, Issue 11, pp. 2808-2818.
2011, M. Jaremko, J. Yu, The initial metabolic conversion of levulinic acid in Cupriavidus necator, Journal of Biotechnology, Vol. 155, Issue 3, pp. 293-298.
2011, M.M. Porter, J. Yu, Crystallization kinetics of poly(3-hdyroxybutyrate) granules in different environmental conditions, Journal of Biomaterials and Nanobiotechnology, Vol. 2011, Issue 2, pp. 301-310. (Open Access: PDF)
2011, M. Porter, J. Yu, Monitoring in situ crystallization of biopolyester granules in Ralstonia eutropha via infrared spectroscopy, Journal of Microbiological Methods, Vol. 87, Issue 1, pp. 49-55.
2010, J. Yu, Biosynthesis of Polyhydroxyalkanoates from 4-Ketovaleric Acid in Bacterial Cells, in H.N. Cheng, R.A. Gross (eds.) Green Polymer Chemistry: Biocatalysis and Biomaterials, American Chemical Society, Chapter 12, pp. 161-173.
2009, J. Yu, L.X.L Chen, S. Sato, Biopolyester synthesis and protein regulations in Ralstonia eutropha on levulinic acid and its derivatives from biomass refining, Journal of Biobased Materials and Bioenergy, Vol. 3, Issue 2, pp. 113-122.
2009, S-E. Lee, Q.X. Li, J. Yu, Diverse protein regulations on PHA formation in Ralstonia eutropha on short chain organic acids, International Journal of Biological Sciences, Vol. 5, Issue 3, pp. 215-225. (Open Access: PDF)
2008, J. Yu, L.X.L. Chen, The Greenhouse Gas Emissions and Fossil Energy Requirement of Bioplastics from Cradle to Gate of a Biomass Refinery, Environmental Science & Technology, Vol. 42, Issue 18, pp. 6961-6966.
2008, J. Yu, H. Stahl, Microbial utilization and biopolyester synthesis of bagasse hydrolysates, Bioresource Technology, Vol. 99, Issue 17, pp. 8042-8048.
2008, Z. Xu, J. Yu, Hydrodynamics and mass transfer in a novel multi-airlifting bioreactor, Chemical Engineering Science, Vol. 63, Issue 7, pp. 1941-1949.

Methane Hydrates

Methane Hydrates (2001-2020)
Supported exploration of hydrate reservoirs, development of methods to destabilize hydrates to produce methane fuel, and advanced our understanding of the environmental impacts of methane and other hydrocarbons in the ocean.

Microbial Degradation of Hydrocarbons in Marine and Estuarine Environments (2010-2020)
Identified aquatic microbes that effectively degrade hydrocarbon pollutants in estuaries and the ocean and elucidate the mechanisms of this degradation.

Methane Harvesting for Seafloor Power Generation (2019)
Identified robust, practicable systems to harvest fuel methane from seafloor seeps and converted it to electrical power. Developed a conceptual design of the best candidate system for a 1kW subsea AUV charging station.

Methane Dissolution Rates in the Deep Ocean (2019)
Employed HNEI’s unique laboratory-scale deep ocean simulator facility to measure the dissolution rate and hydrodynamic behavior of methane bubbles at conditions in the ocean down to 1000m depth.

Technical Reports

Papers and Proceedings

2020, T. Uchida, I. Nagamine, I. Yabe, T. Fukumaki, A. Oyama, B. Yoza, N. Tenma, S.M. Masutani, Dissolution Process Observation of Methane Bubbles in the Deep Ocean Simulator Facility, Energies, Vol. 13, Issue 15, Paper 3938. (Open Access: PDF)
2019, E.J. Davies, D.A.E. Dunnebier, Ø. Johansen, S. Masutani, I. Nagamine, P.J. Brandvik, Shedding from chemically-treated oil droplets rising in seawater, Marine Pollution Bulletin, Vol. 143, pp. 256-263. (Open Access: PDF)
2017, A. Oyama, S.M. Masutani, A Review of the Methane Hydrate Program in Japan, Energies, Vol. 10, Issue 10, Paper 1447. (Open Access: PDF)
2017, R.B. Coffin, J.P. Smith, B. Yoza, T.J. Boyd, M.T. Montgomery, Spatial Variation in Sediment Organic Carbon Distribution across the Alaskan Beaufort Sea Shelf, Energies, Vol. 10, Issue 9, Paper 1265. (Open Access: PDF)
2017, J.T. Weissman, S.M. Masutani, Hydrogen Storage Capacity of Tetrahydrofuran and Tetra-N-Butylammonium Bromide Hydrates Under Favorable Thermodynamic Conditions, Energies, Vol. 10, Issue 8, paper 1225. (Open Access: PDF)
2017, P.J. Brandvik, Ø. Johansen, E.J. Davies, F. Leirvik, D.F. Krause, P.S. Daling, D. Dunnebier, S. Masutani, I. Nagamine, C. Storey, C. Brady, R. Belore, T. Nedwed, C. Cooper, A. Ahnell, O. Pelz, K. Anderson, Subsea Dispersant Injection (SSDI) – Summary Findings from a Multi-Year Research and Development Industry Initiative, Proceeding of the International Oil Spill Conference, Vol. 2017, Issue 1, pp. 2762-2790. (Open Access: PDF)
2017, T. Uchida, B. Kvamme, R.B. Coffin, N. Tenma, A. Oyama, S.M. Masutani, Review of Fundamental Properties of Gas Hydrates: Breakout Sessions of the International Workshop on Methane Hydrate Research and Development, Energies, Vol. 10, Issue 6, Paper 747. (Open Access: PDF)
2016, T.Y. Sylva, C.K. Kinoshita, S.M. Masutani, Inhibiting Effects of Transition Metal Salts on Methane Hydrate Stability, Chemical Engineering Science, Vol. 155, pp.10-15.
2016, P.J. Brandvik, Ø. Johansen, E.J. Davies, F. Leirvik, D.F. Krause, P.S. Daling, D. Dunnebier, S. Masutani, I. Nagamine, C. Storey, C. Brady, R. Bellore, T. Nedwed, C. Cooper, A. Ahnell, O. Pelz, K. Anderson, Subsea Dispersant Injection – Summary of Operationally Relevant Findings From a Multi-Year Industry Initiative, Proceeding of the SPE International Conference and Exhibition on Health, Safety, Security, Environment, and Social Responsibility, Doc ID SPE-179401-MS.
2015, E.W. North, E.E. Adams, A.E. Thessen, Z. Schlag, R. He, S.A. Socolofsky, S.M. Masutani, S.D. Peckham, The influence of droplet size and biodegradation on the transport of subsurface oil droplets during the Deepwater Horizon spill: a model sensitivity study, Environmental Research Letters, Vol. 10, Issue 2, Paper 024016. (Open Access: PDF)
2014, R.B. Coffin, L.J. Hamdan, J.P. Smith, P.S. Rose, R.E. Plummer, B. Yoza, I. Pecher, M.T. Montgomery, Contribution of vertical methane flux to shallow sediment carbon pools across Porangahau Ridge, New Zealand, Energies, Vol. 7, Issue 8, pp. 5332-5356. (Open Access: PDF)
2013, R.B. Coffin, J.P. Smith, R.E. Plummer, B. Yoza, R.K. Larsen, L.C. Millholland, M.T. Montgomery, Spatial variation in shallow sediment methane sources and cycling on the Alaskan Beaufort Sea Shelf/Slope, Marine and Petroleum Geology, Vol. 45, pp. 186-197.
2010, G.C. Nihous, K. Kuroda, J.R. Lobos-Gonzalez, R.J. Kurasaki, S.M. Masutani, An analysis of gas hydrate dissociation in the presence of thermodynamic inhibitors, Chemical Engineering Science, Vol. 65, Issue 5, pp. 1748-1761.
2010, G.C. Nihous, Notes on the temperature dependence of carbon isotope fractionation by aerobic CH4-oxydizing bacteria, Isotopes in Environmental and Health Studies, Vol. 46, Issue 2, pp. 133-140.
2010, B.A. Yoza, G.C. Nihous, P.K. Takahashi, L.G. Golmen, J.C. War, K. Otsuka, K. Ouchi, S.M. Masutani, Deep Ocean Water Resources in the 21st Century, Marine Technology Society Journal, Vol. 44, Issue 3, pp. 80-87.
2009, M.T. Montgomery, T.J. Boyd, C.L. Osburn, R.E. Plummer, S.M. Masutani, R.B. Coffin, Desalination technology waste streams: effect of pH and salinity on metabolism of marine microbial assemblages, Desalination, Vol. 249, Issue 2, pp. 861-864.
2009, G.C. Nihous, C.K. Kinoshita, S.M. Masutani, A determination of the activity of water-alcohol mixtures using mobile order thermodynamics, Chemical Engineering Science, Vol. 64, Issue 11, pp. 2767-2771.
2009, M.A. Reese, S.Q. Turn, H. Cui, High pressure autothermal reforming in low oxygen environments, Journal of Power Sources, Vol. 187, Issue 2, pp. 544-554.
2008, G.C. Nihous, A quantitative interpretation of recent experimental results on stable carbon isotope fractionation by aerobic CH4-oxidizing bacteria, Geochimica et Cosmochimica Acta, Vol. 72, Issue 18, pp. 4469-4475.
2007, G.C. Nihous, S.M. Masutani, Notes on the modeling of methane in aging hydrothermal plumes, Journal of Marine Research, Vol. 65, Issue 6, pp. 789-812. (Open Access: PDF)
2006, G.C. Nihous, S.M. Masutani, A model of methane concentration profiles in the open ocean, Journal of Marine Research, Vol. 64, Issue 4, pp. 629-650. (Open Access: PDF)
2006, G.C. Nihous, S.M. Masutani, Notes on the dissolution rate of gas hydrates in undersaturated water, Chemical Engineering Science, Vol. 61, Issue 23, pp. 7827-7830.
2004, R.B. Coffin, M.T. Montgomery, T.J. Boyd, S.M. Masutani, Influence of ocean CO2 Sequestration on bacterial production, Energy, Vol. 29, Issue 9-10, pp. 1511-1520.
2003, S.M. Masutani, M. Nishio, M. Ozaki, International Field Experiment Nozzle and Large Tank Studies, Proceeding of the 6th International Conference on Greenhouse Gas Control Technologies, pp. 791-796.

O‘ahu Distributed PV Grid Stability Study (2015-2017)
Evaluated grid stability and dynamic performance of O‘ahu with increasing levels of distributed photovoltaic solar resources during contingency events, and assessments of grid strength and battery energy storage.

O‘ahu-Maui Grid Interconnection Study (2013-2014)
Examined the value of prospective interconnected operation between the O‘ahu and Maui County (Maui, Lana‘i, and Moloka‘i) power grids via submarine power cables, advanced control systems, and operational strategies.

O‘ahu Electric Vehicle Charging Study (2012-2013)
Quantified impacts of EVs in reducing curtailed wind and solar energy with controlled EV charging strategies under several future scenarios with high penetrations of wind and solar energy on O‘ahu’s electricity grid.

Hawai‘i Solar Integration Study (2010-2012)
Examined the operational impact of high penetrations of solar and wind energy on the O‘ahu and Maui bulk power systems.

O‘ahu Wind Integration Study (2009-2010)
Evaluated the technical feasibility and economic viability of operational strategies, improvements to existing infrastructure, and new technologies to enable the integration of 400 MW of wind and 100 MW solar PV on the O‘ahu system.

O‘ahu Grid Study: Validation of Grid Models (2009)
Developed and calibrated dynamic production cost models for the O‘ahu grid that can help identify technologies and strategies to enable the system to manage higher amounts of renewable energy and evaluate the impacts of different scenarios.

Technical Reports

O‘ahu Wind Integration Study, GE Company, December 2010

Small Scale Wind Turbine Analysis (2012-2017)
Deployed and monitored five small scale wind turbines at the Crissy Field Center to evaluate performance for distributed applications.

Geothermal Strategic Development Study (2012-2013)
Assessed state, industry, and utility interest in developing new geothermal energy resources and offered recommendations to prepare for potential development scenarios and suggested a roadmap for implementation in Hawai‘i.

Technical Reports

Crissy Field Center Wind Power Study: Final Report, Golden Gate National Parks Conservancy, September 2015

Papers and Proceedings

2010, L.A. Vega, D. Michaelis, First generation 50 MW OTEC plantship for the production of electricity and desalinated water, Proceeding of the Offshore Technology Conference, Houston, Texas, Paper OTC 20957.
2010, L.A. Vega, Economics of Ocean Thermal Energy Conversion (OTEC): An update, Proceeding of the Offshore Technology Conference, Paper OTC 21016.
2009, G.C. Nihous, Axisymmetric large eddy simulation of a circular source of buoyancy, International Journal of Heat and Fluid Flow, Vol. 30, Issue 6, pp. 1080-1086.
2007, G.C. Nihous, An estimate of Atlantic Ocean thermal energy conversion (OTEC) resources, Ocean Engineering, Vol. 34, Issues 17-18, pp. 2210-2221.

Batteries

Evaluation of Commercial Li-Ion Cells Based on Composite Electrode for Plug-In Electric Vehicles (2008-2013)
Degradation assessment of commercial blended Li-ion batteries for plug-in electric vehicle applications at different temperatures using non-invasive characterizations.

Data Collection and Analysis to Support HCATT Electric and Hybrid Vehicle Demonstration Program (2000-2011)
Developed a sophisticated database and graphical user interface (GUI) to allow data collection and fuzzy logic based analysis of a fleet of electric vehicles during operation.

Technical Reports

Battery Cycling and Calendar Aging: Year One Testing Results, July 2016
Cell Emulation and Preliminary Results, July 2016
Test Plan to Assess Electric Vehicle Cell Degradation under Electric Utility Grid Operations, February 2015
Initial Conditioning Characterization Test and Other Preliminary Testing, February 2015

Papers and Proceedings

2010, B.Y. Liaw, M. Dubarry, A roadmap to understand battery performance in electric and hybrid vehicle operation, in G. Pistoia (ed.) Electric and Hybrid Vehicles: Power Sources, Models, Sustainability, Infrastructure and the Market, Elsevier, Chapter 15, pp. 375-403.
2007, M. Dubarry, V. Svoboda, R. Hwu, B.Y. Liaw, A roadmap to understand battery performance in electric and hybrid vehicle operation, Journal of Power Sources, Vol. 174, Issue 2, pp. 366-372.

Hydrogen Storage and Carrier Materials

Develop Reversible Liquid Hydrogen Carriers Containing Magnesium Boranes (2019-2023)
Developed a commercially viable, two-way liquid hydrogen carrier that has greater energy efficiency and lower delivery costs than existing hydrogen technology.

Development of Advanced Magnesium Boride Hydrogen Storage Materials (2019-2023)
Obtained key information for development of a comprehensive, multi-scale computational model of reversible hydrogenation of magnesium boride to magnesium borohydride.

Magnesium Boride Etherates for Hydrogen Storage (2016-2021)
Synthesized and characterized novel modified magnesium boride materials with improved hydrogen cycling kinetics and hydrogen storage capacities and demonstrated their capability to meet DOE hydrogen storage targets.

Papers and Proceedings

2023, T.K.N. Pham, E. Bruffey III, A.T. Nguyen, R.A. Rivera-Maldonado, D-Y. Kuo, B. Cossairt, W. Lee, G. Severa, J.J. Brown, Deposition of Ultrathin MgB₂ Films from a Suspension Using Cosolvent Marangoni Flow, Langmuir, Vol. 39, Issue 11, pp. 3853-3861.
2019, C. Sugai, S. Kim, G. Severa, J. L. White, N. Leick, M. B. Martinez, T. Gennett, V. Stavila, and C. Jensen, Kinetic Enhancement of Direct Hydrogenation of MgB₂ to Mg(BH₄)₂ upon Mechanical Milling with THF, MgH₂, and/or Mg, ChemPhysChem, Vol. 20, pp. 1-5.

Gas Purification

Forward Osmosis Draw Solutions for Seawater Desalination (2019-2023)
Fabricated a FO system and develop novel inorganic salts and ionic liquid draw solutes for use in FO water purification.

Papers and Proceedings

2021, G. Severa, E. Bruffey, P.Q.H. Nguyen, A. Gigante, N. Leick, C. Kelly, G.J. Finkelstein, H. Hagemann, T. Gennett, R.E. Rocheleau, P. Dera, Fe₄(OAc)₁₀[EMIM]₂: Novel Iron-Based Acetate EMIM Ionic Compound, ACS Omega, Vol. 6, Issue 47, pp. 31907-31918. (Open Access: PDF)
2020, P. Dera, E. Bruffey III, G.J. Finkelstein, C. Kelly, A. Gigante, H. Hagemann, G. Severa, Synthesis, Characterization, and Crystal Structures of Two New Manganese Aceto EMIM Ionic Compounds with Chains of Mn²⁺ Ions Coordinated Exclusively by Acetate, ACS Omega, Vol. 5, Issue 25, pp. 15592-15600. (Open Access: PDF)
2018, G. Severa, J. Head, K. Bethune, S. Higgins, A. Fujise, Comparative studies of low concentration SO₂ and NO₂ sorption by activated carbon supported [C₂mim][Ac] and KOH sorbents, Journal of Environmental Chemical Engineering, Vol. 6, Issue 1, pp. 718-727.
2015, G. Severa, K. Bethune, R. Rocheleau, S. Higgins, SO₂ sorption by activated carbon supported ionic liquids under simulated atmospheric conditions, Chemical Engineering Journal, Vol. 265, pp. 249-258.

Contaminant Mitigation

Development of Novel Air Filtration Materials (2017-2024)
Designed, synthesis and characterization of novel, reversible high-performance acidic gas contaminant absorbent materials, which would enable fuel cell vehicles to be efficiently operated under harsh atmospheric air environments.

Regenerative Air Filtration Materials (2013-2020)
Develop air filtration materials that are capable of regeneration through UV light exposure, which could be used to purify air for stationary and vehicle fuel cell power plants.

Papers and Proceedings

2018, S.R. Higgins, J. Ewan, J. St-Pierre, G. Severa, K. Davies, K. Bethune, A. Goodarzi, R. Rocheleau, Environmental sensor system for expanded capability of PEM fuel cell use in high air contaminant conditions, International Journal of Hydrogen Energy, Vol. 43, Issue 50, pp. 22584-22594.
2015, G. Severa, K. Bethune, R. Rocheleau, S. Higgins, SO₂ sorption by activated carbon supported ionic liquids under simulated atmospheric conditions, Chemical Engineering Journal, Vol. 265, pp. 249-258.

Modeling and Validating Indoor Air Quality in Hawaiʻi Classrooms (2022-2023)
Evaluated room air quality under different use cases and ventilation typologies to understand the optimal ventilation configurations to minimize exposure to CO₂ or other contaminants.

Reducing Greenhouse Gas Emissions from Building Operation (2022)
Provided support and content development to the City and County of Honolulu Climate Change Commission for development of a white paper intended to provided technical and policy guidance for climate change mitigation.

Seawater Air Conditioning Environmental Monitoring (2017-2022)
Developed a thorough understanding of the baseline oceanographic conditions at the proposed site of the Honolulu SWAC system, and ultimately used this data to assess the environmental impacts of its operation.

Using Computer Vision to Measure Human Movement (2020-2021)
Developed a process to anonymously measure human flow patterns, dwell times, dwell location, occupant spacing, and other metrics for the purpose of optimizing space utilization and energy management.

Project FROG Net Zero, Mixed Mode Buildings (2012-2021)
Understand energy performance and operation of net zero energy, mixed mode buildings in tropical climate and to use the buildings as real-world research facilities for the study of energy efficient building features and control strategies.

Adaptive Lighting and Energy Efficient Security Strategy (2018-2021)
Developed and tested an adaptive lighting system, based on novel Light Detection and Ranging sensor, that has the potential to significantly enhance security and dramatically reduce energy use and maintenance costs.

Building Energy Reduction in Future Transit Oriented Development Areas (2018-2021)
Developed and demonstrated a building energy analysis process that can be used during early design phases at multiple transit-oriented development sites located along Oʻahu’s light rail line.

Energy Efficient Home Design: Department of Hawaiian Home Lands (2018-2021)
Provided technical support to the DHHL and two sets of their design/builders to improve comfort and energy efficiency of homes built in their neighborhoods.

Healthy and Resilient Buildings Initiative (2020)
Provided an immediate pathway for relief to businesses from the coronavirus pandemic by using virtual energy audits to quickly identify operational energy savings from potential energy efficiency measures and indoor air quality improvements through potential increased air flow.

State of Hawai‘i Department of Education: Thermal Comfort Portal Web Hosting (2017-2020)
Provided HIDOE with the technical resources and expertise to support the delivery of energy and weather data that enables researchers, the community, and design professionals to make data-driven decisions for designs and resource allocation.

Advanced Design, Control, and Application of Ceiling Fans: Gap Evaluation (2017-2018)
Evaluated fan typologies, control options, and operational characteristics and provided research-based design guidelines to assist in space planning, design, and product selection.

Desiccant Dehumidification for Mechanical HVAC Systems in Tropical Environment (2016-2017)
Investigated non-conventional liquid desiccant dehumidification systems, identified applications in Hawai‘i, proposed a pilot design, and identified a potential site for the implementation of a pilot.

Municipal Building Energy Monitoring and Management (2015-2016)
Integrated energy data acquisition systems to identify energy retrofit opportunities and provide continuous monitoring and energy management capabilities.

Comfort Technologies for Naturally Ventilated Facilities (2013-2016)
Investigated technology applications to enhance comfort and displace traditional mechanical cooling in buildings.

Monitoring and Field Performance Validation (2013-2016)
Instrumented, monitored, and evaluated energy consumption profiles in housing units to determine performance of energy efficiency measures in a residential setting.

State of Hawai‘i Department of Education Facilities Energy and Comfort Study (2015)
Monitored, evaluated, and assessed specific school facilities using a range of HIDOE-defined criteria that includes environmental conditions, energy use, comfort, and other human factors related to healthy learning environments.

Technical Reports

HNEI Indoor Air Quality Study: Analytical Summary, MKThink and Roundhouse One, October 2023
The Impact of an On-Demand Thermostat on Energy Consumption and Carbon Dioxide Levels in a Hawai‘i Classroom, HNEI & UH School of Architecture’s Environmental Research and Design Laboratory, March 2023
Reducing Greenhouse Gas Emissions from Building Operation – Guidance Document, City and County of Honolulu Climate Change Commission, July 2022
Nanogrid System Resilience for Ka Honua Momona, June 2022
Adaptive, Sensor-Based Lighting for Security Applications: Exploring Emerging Design Strategies, UC Davis California Lighting Technology Center & HNEI, November 2021
A Case Study of Indoor Air Quality in Mixed Mode Buildings in Tropical Environments, HNEI & UHM ERDL, February 2021
Ceiling Fan and Thermal Comfort Assessment for Mixed-Mode Classrooms in Hawaiʻi, UHM School of Architecture & HNEI, February 2021
University of Hawai’i Whole-Building Energy Modeling for Future Transit-Oriented Development (TOD) Areas, WSP, March 2020
Methods for Establishing and Validating Architectural Models to Analyze Building Performance of Existing Conditions and Simulated Design Options for Three Department of Hawaiian Homeland Residential Buildings in Kapolei, O‘ahu, Hawai‘i, UHM ERDL, UH Sea Grant Program, and Sustainable Design & Consulting, November 2019
Ceiling Fan Study: Gap Analysis, MKThink, January 2018
Desiccant Dehumidification Applications in Hawai‘i Phase 1 Project Summary, Sustainable Design & Consulting LLC and HNEI, November 2017
Design Study of a Packaged Liquid Desiccant (LD) System, Sustainable Design & Consulting LLC and HNEI, November 2017
Assessment of Liquid Desiccant Dehumidification System Potential in Hawai‘i, Sustainable Design & Consulting LLC and HNEI, November 2017
Ceiling Fan Study: Literature and Market Report, MKThink, August 2017
Application Potential of Liquid Desiccant Installations in Hawai‘i, Sustainable Design & Consulting LLC and HNEI, July 2017
Technology Review and Availability of Liquid Desiccant Systems, Sustainable Design & Consulting LLC and HNEI, June 2017
Assessment of Desiccant Dehumidification: Technical Feasibility, Sustainable Design & Consulting & HNEI, July 2016
Assessment of Desiccant Dehumidification: Literature and Technology Review, Sustainable Design & Consulting & HNEI, July 2016
Net Zero Energy Test Platform Performance Comprehensive Analysis, MKThink, March 2016
Kaua‘i Main Police Facility Retrofit Analysis, Loisis + Ubbelohde Associates, January 2016
Computational Fluid Dynamics (CFD) Applications: Phase 3 Occupant Comfort in Naturally Ventilated Spaces Summary, Sustainable Design & Consulting, UHM ERDL, & HNEI, December 2015
Computational Fluid Dynamics (CFD) Applications: Phase 2 Internal CFD Summary, Sustainable Design & Consulting, UHM ERDL, & HNEI, April 2015
Kawaikini New Century Public Charter School Final Report & Appendix, MKThink, March 2015
Computational Fluid Dynamics (CFD) Applications: Phase 1 External CFD Summary, Sustainable Design & Consulting, UHM ERDL, & HNEI, December 2014
Energy Audit Results for Forest City Phase I and Phase II, UH Environmental Research and Design Laboratory, Sea Grant Center for Smart Building and Community Design & HNEI, April 2013

Papers and Proceedings

2021, M.B. Glick, E. Peppard, W. Meguro, Analysis of Methodology for Scaling up Building Retrofits: Is There a Role for Virtual Energy Audits?—A First Step in Hawai’i, USA, Energies, Vol. 14, Issue 18, Paper 5914. (Open Access: PDF)
2020, S. Cerri, A. Maskrey, E. Peppard, Retaining a healthy indoor environment in on-demand mixed-mode classrooms, Developments in the Built Environment, Vol. 4, Paper 100031. (Open Access: PDF)
2020, W. Meguro, E. Peppard, S. Meder, J. Maskrey, R. Josephson, Going Beyond Code: Monitoring Disaggregated Energy and Modeling Detached Houses in Hawai‘i, Buildings, Vol. 10, Issue 7, Paper 120. (Open Access: PDF)
2018, A.J. Maskrey, S. Cerri, E. Peppard, Second Generation ZNE: Inheriting the Good Genes, Proceeding of ACEEE Summer Study on Energy Efficiency in Buildings Conference, Panel 10: Net Zero: Moving Beyond 1%, Article 10. (Open Access: PDF)
2016, A.J. Maskrey, S. Cerri, E. Peppard, M. Miller, S. Uddenberg, Positively net zero: case study of performance simulation and hitting the targets, Proceeding of the ACEEE Summer Study on Energy Efficiency in Buildings Conference, Panel 10: Net Zero, Net Positive, Article 10-1001. (Open Access: PDF)

Electric Vehicle Transportation Center (2013-2018)
Partnered with Florida Solar Energy Center to test commercial lithium ion batteries under Vehicle-to-Grid and Grid-to Vehicle conditions to forecast their durability and assess battery degradation factors in relation to EV technologies.

Technical Reports