Cui, H., S.Q. Turn, V. Keffer, D. Evans, T. Tran, and M. Foley. 2010. Contaminant estimates and removal in product gas from biomass steam gasification. Energy & Fuels. 24 pp. 1222-1233.
Turn, S.Q., C.M. Kinoshita, D.M. Ishimura, J. Zhou, T.T. Hiraki, and S.M Masutani. 2001. An experimental investigation of alkali removal from biomass producer gas using a fixed bed of solid sorbent. Industrial & Engineering Chemistry Research. 40(8); pp. 1960-1967.