Effects of total ammonia nitrogen concentration on solid-state anaerobic digestion of corn stover

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논문

Effects of total ammonia nitrogen concentration on solid-state anaerobic digestion of corn stover

학술지

Bioresource technology : biomass, bioenergy, biowastes, conversion technologies, biotransformations, production technologies

저자명

Wang, Z.; Xu, F.; Li, Y.

초록

The inhibitive effect of total ammonia nitrogen (TAN) (including NH3 and NH4+) on solid-state anaerobic digestion of corn stover was investigated in batch reactors at 37oC. The highest methane yield of 107.0L/kg VSfeed was obtained at a TAN concentration of 2.5g/kg (based on total weight). TAN concentrations greater than 2.5g/kg resulted in decreased methane yields, with a 50% reduction observed at a concentration of 6.0g/kg. Reduced reaction rates and microbial activities for hydrolysis of cellulose and methanogenesis from acetate were observed at TAN concentrations higher than 4.3g/kg. Strong ammonia stress was indicated at butyrate concentrations higher than 300mg/kg. Result showed that the effluent of liquid anaerobic digestion can provide enough nitrogen for solid-state anaerobic digestion of corn stover.

발행연도

2013

발행기관

Elsevier Applied Science

ISSN

0960-8524

권

144

페이지

pp.281-287

DOI

10.1016/j.biortech.2013.06.106