Research Article
Bio-Hydrogen Production using a Two-Stage Fermentation Process
Department of Chemical and Process Engineering, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, 43600 UKM Bangi, Malaysia
M. S. Kalil
Department of Chemical and Process Engineering, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, 43600 UKM Bangi, Malaysia
A.A. H. Kadhum
Department of Chemical and Process Engineering, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, 43600 UKM Bangi, Malaysia
J. M. Jahim
Department of Chemical and Process Engineering, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, 43600 UKM Bangi, Malaysia
S.Z. S. Jaapar
Yemen Gas Company, P.O. Box 13465, Sana`a, Republic of Yemen
N. M. Alauj
Yemen Gas Company, P.O. Box 13465, Sana`a, Republic of Yemen