Impact of bioaugmentation on biochemical methane potential for wheat straw with addition of Clostridium cellulolyticum

Bioresource Technology
Xiaowei PengJing Liu

Abstract

Hydrolysis is usually the rate-limited step for methane production from lignocellulosic substrate. Two bioaugmentation strategies, using the cellulolytic anaerobic bacteria Clostridium cellulolyticum, were adopted to enhance the hydrolysis of wheat straw with the purpose of improving the biochemical methane potential (BMP). Namely, the 24-h-incubated seed (C24S) with cellobiose as carbon source and the 60-h-incubated seed (WS60S) with wheat straw as carbon source were respectively used as the bioaugmentation agents. As a result, the BMPs were respectively 342.5 and 326.3 ml g(-1) VS of wheat straw, with an increase of 13.0% and 7.6% comparing to the no-bioaugmentation BMP of 303.3 ml g(-1) VS. The result indicates that the anaerobic digestion efficiency can be improved by bioaugmentation, which therefore may be a promising method for improving methane production from lignocellulosic substrate.

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Citations

Apr 4, 2015·Bioresource Technology·Maša ČaterRomana Marinšek Logar
Feb 23, 2018·Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering·Bo-Min KiKyung-Suk Cho
Dec 5, 2019·Applied Microbiology and Biotechnology·Emine Gozde OzbayramMarcell Nikolausz
Nov 27, 2018·The Science of the Total Environment·Hainan AiHong Li
Jul 21, 2021·Biotechnology for Biofuels·Kehinde Oladoke OlatunjiOyetola Ogunkunle
Oct 27, 2021·Applied Microbiology and Biotechnology·Maria Paula C VolpiBruna S Moraes

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