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Bioaugmentation of a two-stage thermophilic (68°C/55°C) anaerobic digestion concept for improvement of the methane yield from cattle manure

✍ Scribed by Henrik Bangsø Nielsen; Zuzana Mladenovska; Birgitte Kiær Ahring

Publisher: John Wiley and Sons
Year: 2007
Tongue: English
Weight: 220 KB
Volume: 97
Category: Article
ISSN: 0006-3592
DOI: 10.1002/bit.21342

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✦ Synopsis

Abstract

The possibility of improving a two‐stage (68°C/55°C) anaerobic digestion concept for treatment of cattle manure was studied. In batch experiments, a 10–24% increase of the specific methane yield from cattle manure and its fractions was obtained, when the substrates were inoculated with bacteria of the genus Caldicellusiruptor and Dictyoglomus. In a reactor experiment inoculation of a 68°C pretreatment reactor with Caldicellusiruptor resulted in a 93% increase in the methane yield of the pretreatment reactor for a period of 18 days, but gave only a slight increase in the overall methane yield of the two‐stage setup. Biotechnol. Bioeng. 2007; 97: 1638–1643. © 2007 Wiley Periodicals, Inc.

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✍ H. B. Nielsen; Z. Mladenovska; P. Westermann; B. K. Ahring 📂 Article 📅 2004 🏛 John Wiley and Sons 🌐 English ⚖ 694 KB

## Abstract A two‐stage 68°C/55°C anaerobic degradation process for treatment of cattle manure was studied. In batch experiments, an increase of the specific methane yield, ranging from 24% to 56%, was obtained when cattle manure and its fractions (fibers and liquid) were pretreated at 68°C for per