Journal article
Enhancing volatile fatty acid (VFA) and bio-methane production from lawn grass with pretreatment
Bioresource technology, Vol.162, pp.243-249
06/2014
Handle:
https://hdl.handle.net/2376/108472
PMID: 24759639
Abstract
The bioconversion of fiber-based carbohydrates during anaerobic digestion (AD) is impeded due to the recalcitrant nature of the plant cell wall. Pretreatment of lignocellulose materials under mild conditions are needed to improve the digestibility at minimum cost. This study investigated the effects of different pretreatments, including ozone, soaking aqueous ammonia (SAA), combined ozone and SAA (OSAA), and size reduction to enhance volatile fatty acid (VFA) and bio-methane production when lawn grass was used as substrate. To study VFA production, methanogenesis was selectively inhibited by sodium 2-bromoethanesulfonate to decouple the relation between VFA and bio-methane. The enzymatic hydrolysis of SAA (residence time 24h at 50°C) and OSAA (10 min ozonation and 6h of SAA) in pretreatment of lawn grass sample resulted in 86.71% and 89.63% sugar recovery, respectively. The specific methane yields of the control, ozone, SAA, OSAA, and size-reduced grass samples were 402.5, 358.8, 481.0, 462.6, and 358.3 ml CH4/g volatile solid (VS), respectively.
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Details
- Title
- Enhancing volatile fatty acid (VFA) and bio-methane production from lawn grass with pretreatment
- Creators
- Liang Yu - Department of Biological Systems Engineering, Washington State University, Pullman, WA 99164, USAMahesh Bule - Department of Biological Systems Engineering, Washington State University, Pullman, WA 99164, USAJingwei Ma - Department of Biological Systems Engineering, Washington State University, Pullman, WA 99164, USAQuanbao Zhao - Department of Biological Systems Engineering, Washington State University, Pullman, WA 99164, USACraig Frear - Department of Biological Systems Engineering, Washington State University, Pullman, WA 99164, USAShulin Chen - Department of Biological Systems Engineering, Washington State University, Pullman, WA 99164, USA. Electronic address: chens@wsu.edu
- Publication Details
- Bioresource technology, Vol.162, pp.243-249
- Identifiers
- 99900583056101842
- Language
- English
- Resource Type
- Journal article