title: Catalytic gasification of oil-extracted residue biomass of Botryococcus braunii.
abstract: Catalytic gasification of the oil-extracted residue biomass of Botryococcus braunii was demonstrated in a laboratory-scale continuous feeding dual bed reactor. Steam gasification at 1023 K over Ni-Fe/Mg/Al catalyst can completely reform tar derived from pyrolysis of the residue biomass into C1 gases and hydrogen, and has achieved 91%-C conversion to gaseous product (CO+CO2+CH4). Composition of product gas has higher contents of CO and H2 with their ratio (H2/CO) of around 2.4 which is slightly H2-rich syngas. Maximum hydrogen yield of 74.7 mmol g-biomass(-1) obtained in this work is much higher than that from gasification of other algal biomass reported in literature. The residue biomass of B. braunii can be a superior renewable source of syngas or hydrogen.
authors: Faculty of Life and Environmental Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba 305-8572, Japan. Electronic address: watanabe.hideo.ge@u.tsukuba.ac.jp.
authors: Hideo
authors: H
authors: Watanabe
authors: Department of Applied Chemistry, School of Engineering, Tohoku University, 6-6-07 Aoba, Aramaki, Aoba-ku, Sendai 980-8579, Japan.
authors: Dalin
authors: D
authors: Li
authors: Department of Applied Chemistry, School of Engineering, Tohoku University, 6-6-07 Aoba, Aramaki, Aoba-ku, Sendai 980-8579, Japan.
authors: Yoshinao
authors: Y
authors: Nakagawa
authors: Department of Applied Chemistry, School of Engineering, Tohoku University, 6-6-07 Aoba, Aramaki, Aoba-ku, Sendai 980-8579, Japan.
authors: Keiichi
authors: K
authors: Tomishige
authors: Faculty of Life and Environmental Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba 305-8572, Japan.
authors: Makoto M
authors: MM
authors: Watanabe
mesh_terms: D018533:Biomass; D002384:Catalysis; D000460:Chlorophyta / Q000378:metabolism*; D005740:Gases / Q000378:metabolism*; D009821:Oils / Q000378:metabolism*
chemical_list: D005740:Gases; D009821:Oils
keywords: Algal biomass; Botryococcus braunii; Ni–Fe catalyst; Oil-extracted residue; Steam gasification