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http://dx.doi.org/10.17137/Korrae.2011.19.3.2

A study for Solubilization and Bioavailability of Sewage Sludge Using the Complex Pre-treatment  

Kang, Jung-Hyun (Department of Environmental Engineering, Seoul National University of Science & Technology)
Lee, Hee-Soo (Department of Environmental Engineering, Seoul National University of Science & Technology)
Lee, Tae-Jin (Department of Environmental Engineering, Seoul National University of Science & Technology)
Publication Information
Journal of the Korea Organic Resources Recycling Association / v.19, no.3, 2011 , pp. 35-43 More about this Journal
Abstract
In this study, anaerobic biological decomposition were attempted after solubilization treatment of sewage sludge with the complex pre-treatment (acid/base treatment with ultrasonic radiation). Solubilization ratios were compared for ultrasonic treatment at acid or base condition. Solubilization effect of the complex pre-treatment was more effective at higher pH. Biological decomposition of complex pre-treated sludge was faster than non treated (raw) sludge, showing 10 times higher total gas production. Biological digestion of the sludge shows more biogas production. B/A ratio. which indicates hydrogen production potential, was 50% higher with complex pre-treated sludge than raw sludge but lactic acid or propionic acid were also detected during anaerobic decomposition process.
Keywords
Sewage sludge; Ultrasonic treatment; Sludge solubilization; Acid/base treatment;
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