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Boosting dark fermentation with co-cultures of extreme thermophiles for biohythane production from garden waste

descriptionPublicationkeyboard_double_arrow_right Article , Journal , Other literature type 01 Nov 2016 Portugal Publisher:Elsevier BVJournal:Bioresource Technology, volume 219, pages 132-138 (issn: 0960-8524,

Authors: Abreu, A. A.; Tavares, F.; Alves, M. M.; Pereira, M. A.;

doi: 10.1016/j.biortech.2016.07.096

pmid: 27484669

handle: 1822/42331

Boosting dark fermentation with co-cultures of extreme thermophiles for biohythane production from garden waste

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Abstract

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±0.1molmol(-1) total sugar) and cellobiose (4.8±0.3molmol(-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±6.9Lkg(-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±10Lkg(-1) (CODt). Biohythane, a biogas enriched with 15% hydrogen could be obtained from GW, yielding a potential energy generation of 22.2MJkg(-1) (VS).

Country

Portugal

Related Organizations

University of Minho
Portugal
University of Minho
Portugal
University of Minho
Portugal
Universidade do Minho Centro de Engenharia Biológica
Universidade do Minho Centro de Engenharia Biológica

Keywords

Caldicellulosiruptor saccharolyticus, Cellobiose, Hot Temperature, Garden waste, Extremophiles, Thermotoga maritima, Anaerobiosis, Biomass, Co-cultures, Biohythane, Waste Products, Clostridiales, Science & Technology, Xylose, Thermotaga maritima, Caldicellulosiruptor bescii, Biofuels, Fermentation, Gardens, Methane, Hydrogen

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	influence This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).	Top 10%
	impulse This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.	Top 10%