Enhanced biogas production from anaerobic co-digestion of lignocellulosic biomass and poultry feces using source separated human urine as buffering agent

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dc.contributor.authorEduok, Samuel
dc.contributor.authorJohn, Ofonime
dc.contributor.authorIta, Basil
dc.contributor.authorInyang, Edidiong
dc.contributor.authorCoulon, Frederic
dc.date.accessioned2018-07-02T15:36:26Z
dc.date.available2018-07-02T15:36:26Z
dc.date.issued2018-07-02
dc.description.abstractEffect of source separated human urine as buffering agent compared to sodium bicarbonate and water in anaerobic co-digestion of lignocellulosic biomass and poultry feces was evaluated in laboratory scale reactor for 180 days at 37 ± 2°C. Mean biogas volume ranged from 37 ± 8 to 101 ± 18 mL gVS−1 in the urine buffered reactors which was 1–5 times higher than the bicarbonate and water buffered reactors and the difference was significant at p = 0. 05. Total volatile fatty acids (VFA) concentration ranged between 396 and 1,400 mg L−1 with a pH of 6.9 ± 0.3 and 7.8 ± 0.1, respectively. In contrast, VFA concentration ranged between 386 and 3,109 mg L−1 (pH 7.6 ± 0.2 and 4.8 ± 0.4) in sodium bicarbonate buffered digestate and control (water) respectively. The result indicates buffering capacity of urine on anaerobic co-digestion with positive effect on biogas production. The Archaeal isoprenoids included markers of aceticlastic and hydrogenotrophic methanogens with a relative abundance that ranged between 0.71–18, 3–55, and 2–59 μg g−1 dry matter in the water (control), bicarbonate and urine buffered digestate, respectively. The Archaeal abundance was 1.12 and 6 times higher in the combined female/male urine than the bicarbonate buffered digestate and the control, and the difference was significant at p = 0.05. Overall, this study demonstrates that human urine with no pharmaceutical loadings as a wetting and buffering agent is a promising option for anaerobic co-digestion with competitive edge over sodium bicarbonate on lignocellulosic biomass saccharification for enhanced biogas production.en_UK
dc.identifier.citationEduok S, Ofonime J, Ita B, Inyang E, Coulon F, Enhanced biogas production from anaerobic co-digestion of lignocellulosic biomass and poultry faeces using source separated human urine as buffering agent, Frontiers in Environmental Science, Vol. 6, July 2018, Article 67en_UK
dc.identifier.issn2296-665X
dc.identifier.urihttp://dx.doi.org/10.3389/fenvs.2018.00067
dc.identifier.urihttp://dspace.lib.cranfield.ac.uk/handle/1826/13297
dc.language.isoenen_UK
dc.publisherFrontiers Mediaen_UK
dc.rightsAttribution 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/*
dc.subjectLignocellulosic biomassen_UK
dc.subjectUrineen_UK
dc.subjectAnaerobicco-digestionen_UK
dc.subjectBufferen_UK
dc.subjectBiogasen_UK
dc.titleEnhanced biogas production from anaerobic co-digestion of lignocellulosic biomass and poultry feces using source separated human urine as buffering agenten_UK
dc.typeArticleen_UK

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