期刊
BIORESOURCE TECHNOLOGY
卷 219, 期 -, 页码 132-138出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2016.07.096
关键词
Thermotoga maritima; Caldicellulosiruptor saccharolyticus; Caldicellulosiruptor bescii; Co-cultures; Biohythane; Garden waste
资金
- Portuguese Science Foundation (FCT)
- European Social Fund (ESF, POPH-QREN) [SFRH/BPD/82000/2011]
- FCT Strategic Project of unit [UID/BIO/04469/2013]
- COMPETE [POCI-01-0145-FEDER-006684, RECI/BBB-EBI/0179/2012 (FCOMP-01-0124-FEDER-027462)]
- Fundação para a Ciência e a Tecnologia [RECI/BBB-EBI/0179/2012] Funding Source: FCT
Proof of principle of biohythane and potential energy production from garden waste (GW) is demonstrated in this study in a two-step process coupling dark fermentation and anaerobic digestion. The synergistic effect of using co-cultures of extreme thermophiles to intensify biohydrogen dark fermentation is demonstrated using xylose, cellobiose and GW. Co-culture of Caldicellulosiruptor saccharolyticus and Thermotoga maritima showed higher hydrogen production yields from xylose (2.7 +/- 0.1 mol mol(-1) total sugar) and cellobiose (4.8 +/- 0.3 mol mol(-1) total sugar) compared to individual cultures. Co-culture of extreme thermophiles C. saccharolyticus and Caldicellulosiruptor bescii increased synergistically the hydrogen production yield from GW (98.3 +/- 6.9 L kg(-1) (VS)) compared to individual cultures and co-culture of T. maritima and C. saccharolyticus. The biochemical methane potential of the fermentation end-products was 322 +/- 10 L kg(-1) (CODt). Biohythane, a biogas enriched with 15% hydrogen could be obtained from GW, yielding a potential energy generation of 22.2 MJ kg(-1) (VS). (C) 2016 Elsevier Ltd. All rights reserved.
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