Fenton decomposition of excess waste sludge

Oxidative decomposition of excess waste sludge was attempted by using Fenton's reagent, which is the combination of hydrogen peroxide and iron salt. Effect of various factors on digestibility of cells was examined. The digestibility was significantly affected by pH. Maximum digestibility was ob...

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Published inJournal of Environmental Conservation Engineering Vol. 20; no. 9; pp. 580 - 583
Main Authors ANDO, Yasuyuki, OKAZAKI, Yasuyuki, KUROSAKI, Tsutomu, ARIGA, Osamu, SANO, Yoshiki
Format Journal Article
LanguageEnglish
Published Society of Environmental Conservation Engineering 1991
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Summary:Oxidative decomposition of excess waste sludge was attempted by using Fenton's reagent, which is the combination of hydrogen peroxide and iron salt. Effect of various factors on digestibility of cells was examined. The digestibility was significantly affected by pH. Maximum digestibility was observed at pH 2.5 and it increased with increasing pH in alkaline solution. Also, it increased with increasing temperature and hydrogen peroxide concentration. In the absence of Fe2+, digestibility increased with addition of hydrogen peroxide compared with that without hydrogen peroxide, and it increased with Fe2+ concentration. Increase of sludge concentration lowered the digestibility, probably due to hydrogen peroxide decomposing enzymes.
ISSN:0388-9459
1882-8590
DOI:10.5956/jriet.20.580