Methane production by co-digestion of poultry manure and lignocellulosic biomass: Kinetic and energy assessment.

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ID: 72968
2019
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Abstract
Six typical Brazilian lignocellulosic biomasses (rice straw, corn cob, peanut shell, sawdust, coffee husk and sugarcane bagasse) were evaluated for methane production by solid-state anaerobic co-digestion with poultry manure. The results showed the highest methane production was obtained with corn cob and poultry manure (126.02 Nm CH. ton residue) using a food to inoculum ratio of 0.5, which lowered volatile fatty acids accumulation. In this condition, the thermal energy production (1.73 MJ.kg live chicken) would be able to replace 53.2% of the energy with firewood in poultry farming. The high hemicellulose and low lignin content in corn cob seem to explain the biomethanation of such biomass, and this agrees with the microbial analysis which revealed the predominance of bacteria related to plant polysaccharides hydrolysis and carbohydrate conversion in the inoculum. The methane production was best modelled by Groot's multi-stage model, and the microbial adaptation to lignin might explain this.
Reference Key
paranhos2019methanebioresource Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Paranhos, Aline Gomes de Oliveira;Adarme, Oscar Fernando Herrera;Barreto, Gabriela Fernandes;Silva, Silvana de Queiroz;Aquino, Sérgio Francisco de;
Journal Bioresource technology
Year 2019
DOI
S0960-8524(19)31818-8
URL
Keywords
lignocellulosic biomass anaerobic co-digestion solid-state fermentation poultry manure

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