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
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
Grant ID DP120102832
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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