Conversion of waste biomass (pea-shells) into hydrogen and methane through anaerobic digestion

Waste pea-shells were digested under batch anaerobic conditions. Digestion of pea-shell slurries (PSS) at 1–5% total solids (TS) concentration, with H 2-producting organisms yielded 99–362l biogas-H/kg organic solids reduced (biogas-H: mixture of H 2, CO 2 and H 2S). Hydrogen constituted 33–46% of t...

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Bibliographic Details
Published in:Bioresource technology 1995, Vol.53 (2), p.165-168
Main Authors: Kalia, V.C., Joshi, A.P.
Format: Article
Language:English
Subjects:
Bacteria
Biofuel production
biogas-H
Biological and medical sciences
Biotechnology
Energy
Food industries
Fundamental and applied biological sciences. Psychology
H 2-producers
hydrogen
Industrial applications and implications. Economical aspects
methane
methanogens
pea-shells
Use and upgrading of agricultural and food by-products. Biotechnology
waste
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Summary:Waste pea-shells were digested under batch anaerobic conditions. Digestion of pea-shell slurries (PSS) at 1–5% total solids (TS) concentration, with H 2-producting organisms yielded 99–362l biogas-H/kg organic solids reduced (biogas-H: mixture of H 2, CO 2 and H 2S). Hydrogen constituted 33–46% of the total biogas-H. Methanogenesis of PSS (1–5% TS) was most effective at 1% TS level. During 25 days of incubation, 507 l biogas/kg was generated (biogas: mixture of CH 4, CO 2 and H 2S). Methane accounted for 43% of the total biogas yield. Biogas yield of 1% TS PSS without the fibrous sheath was only 16·5% of that of 1% TS PSS with the fibrous sheath. However, 3% TS PSS without the fibrous sheath showed improved results, which could be employed for continuous-culture digestions.
ISSN:0960-8524
1873-2976
DOI:10.1016/0960-8524(95)00077-R