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Two-stage membrane separation process for biohydrogen recovery

Búcsú D., Bélafi-Bakó K., Pientka Z.

Environment Protection Engineering

2005

Vol. 31, nr 3-4

33-38

Porous and non-porous gas separation membranes were used for concentration of biohydrogen produced by a heterotrophic hyper-thermophilic, anaerobic micro-organisms. A laboratory-scale integrated system was designed and built based on a liquid seal system and more than 70% hydrogen concentration was achieved from the initial gaseous mixture containing hydrogen, carbon dioxide and nitrogen. Liquid absorption and desorption of the carbon dioxide were also studied.