产甲烷
产酸作用
沼气
食物垃圾
暗发酵
生物燃料
甲烷
制浆造纸工业
化学
发酵
背景(考古学)
环境科学
生物能源
制氢
废物管理
食品科学
生物制氢
厌氧消化
生物化学
生物
催化作用
工程类
有机化学
古生物学
作者
Omprakash Sarkar,J. Santhosh,Atul Dhar,S. Venkata Mohan
标识
DOI:10.1016/j.ijhydene.2021.03.053
摘要
This study presents an integration of acidogenesis (dark-fermentation) and methanogenesis for green hythane/biohythane production from food waste in two stages (S–I and S-II) and phases (P–I and P-II) of operational variations. The regulatory influence of biocatalyst and redox environment on anaerobic fermentation was evaluated through a rapid protocol in the context of biogas up-gradation with reference to bio-hydrogen (bio-H2), biomethane (CH4), bio-hythane (H2+CH4) and their composition (H2/(H2+CH4)) as major markers. Bioreactors with two different parent cultures (heat-shock pretreated and untreated) were operated at pH 6 and 7 in two phases to overcome the impediment of single-phase operation aiming for maximum energy recovery from the untreated substrate of P–I. Integration of S–I with S-II was beneficial to achieve 1.22 times higher cumulative bio-hythane production (4.25 L) compared to S–I (3.47 L) condition alone. The bio-hythane composition mimics the H2 enriched CNG (H-CNG) and showed the potential to be implemented for biogas up-gradation as a tool.
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