Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7709729 | International Journal of Hydrogen Energy | 2017 | 9 Pages |
Abstract
Two-stage thermophilic solid state anaerobic digestion (SS-AD) processes for biohythane production from Chlorella sp. biomass was investigated. The hydrogen and methane yield from fresh Chlorella sp. biomass was 124.9Â mL H2 gVSâ1 and 230.1Â mL CH4 gVSâ1, respectively, at 16% TS with biodegradation efficiency of 34%. Hydrogen and methane production from hydrothermal pretreated Chlorella sp. biomass was 190.0Â mL H2 gVSâ1 and 319.8Â mL CH4 gVSâ1, respectively at 16% TS with biodegradation efficiency of 47%. Pretreatment of Chlorella sp. biomass with hydrothermal follow by two-stage thermophilic SS-AD improved 150% biogas production comparing with fresh biomass. Clostridium sp. was the main bacteria responsible for hydrogen production. Clostridium sp. and Ruminococcus sp. was main bacteria in methane stage, while Methanoculleus sp. and Methanothermobacter sp. was dominated archaea in methane production process. Chlorella sp. biomass with hydrothermal pretreatment has great potential for hydrogen and methane production via two-stage thermophilic SS-AD.
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Authors
Aminee Jehlee, Peerawat Khongkliang, Wantanasak Suksong, Somrak Rodjaroen, Jompob Waewsak, Alissara Reungsang, Sompong O-Thong,