Evaluation of hydrogen and methane production from sugarcane bagasse hemicellulose hydrolysates by two-stage anaerobic digestion process
Bioresource Technology, ISSN: 0960-8524, Vol: 218, Page: 436-446
2016
- 57Citations
- 189Captures
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Article Description
This study aimed at optimizing the net energy recovery from hydrogen and methane production through anaerobic digestion of the hemicellulose hydrolysate (HH) obtained by desirable conditions (DC) of autohydrolysis pretreatment (AH) of sugarcane bagasse (SB). Anaerobic digestion was carried out in a two-stage (acidogenic-methanogenic) batch system where the acidogenic phase worked as a hydrolysis and biodetoxification step. This allowed the utilization of more severe AH pretreatment conditions, i.e. T = 178.6 °C and t = 55 min (DC3) and T = 182.9 °C and t = 40.71 min (DC4). Such severe conditions resulted in higher extraction of hemicelluloses from SB (DC1 = 68.07%, DC2 = 48.99%, DC3 = 77.40% and DC4 = 73.90%), which consequently improved the net energy balance of the proposed process. The estimated energy from the combustion of both biogases (H 2 and CH 4 ) accumulated during the two-stage anaerobic digestion of HH generated by DC4 condition was capable of producing a net energy of 3.15 MJ·kg SB −1 dry weight.
Bibliographic Details
http://www.sciencedirect.com/science/article/pii/S0960852416309373; http://dx.doi.org/10.1016/j.biortech.2016.06.113; http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=84977517253&origin=inward; http://www.ncbi.nlm.nih.gov/pubmed/27393834; https://linkinghub.elsevier.com/retrieve/pii/S0960852416309373; https://dx.doi.org/10.1016/j.biortech.2016.06.113
Elsevier BV
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