Enhancing methane production from waste activated sludge using a novel indigenous iron activated peroxidation pre-treatment process

Zhou, Xu, Wang, Qilin and Jiang, Guangming (2015) Enhancing methane production from waste activated sludge using a novel indigenous iron activated peroxidation pre-treatment process. Bioresource Technology, 182 267-271. doi:10.1016/j.biortech.2015.01.132

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Author Zhou, Xu
Wang, Qilin
Jiang, Guangming
Title Enhancing methane production from waste activated sludge using a novel indigenous iron activated peroxidation pre-treatment process
Journal name Bioresource Technology   Check publisher's open access policy
ISSN 1873-2976
0960-8524
Publication date 2015-04-01
Year available 2015
Sub-type Article (original research)
DOI 10.1016/j.biortech.2015.01.132
Open Access Status File (Author Post-print)
Volume 182
Start page 267
End page 271
Total pages 5
Place of publication Amsterdam, Netherlands
Publisher Elsevier
Collection year 2016
Language eng
Formatted abstract
Methane production from anaerobic digestion of waste activated sludge (WAS) is limited by the slow hydrolysis rate and/or poor methane potential of WAS. This study presents a novel pre-treatment strategy based on indigenous iron (in WAS) activated peroxidation to enhance methane production from WAS. Pre-treatment of WAS for 30 min at 50 mg H2O2/g total solids (dry weight) and pH 2.0 (iron concentration in WAS was 7 mg/g TS) substantially enhanced WAS solubilization. Biochemical methane potential tests demonstrated that methane production was improved by 10% at a digestion time of 16 d after incorporating the indigenous iron activated peroxidation pre-treatment. Model-based analysis indicated that indigenous iron activated peroxidation pre-treatment improved the methane potential by 13%, whereas the hydrolysis rate was not significantly affected. The economic analysis showed that the proposed pre-treatment method can save the cost by $112,000 per year in a treatment plant with a population equivalent of 300,000.
Keyword Waste activated sludge
Hydrogen peroxide
Peroxidation
Methane
Anaerobic digestion
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2016 Collection
Advanced Water Management Centre Publications
 
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