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Leaching behaviour of elements and evaluation of pre-treatment methods for municipal solid waste incinerator residues in column leaching tests.

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Title: Leaching behaviour of elements and evaluation of pre-treatment methods for municipal solid waste incinerator residues in column leaching tests.
Authors: Kim, Sang-Yul Browse this author
Tanaka, Nobutoshi Browse this author
Matsuto, Toshihiko Browse this author →KAKEN DB
Tojo, Yasumasa Browse this author →KAKEN DB
Keywords: MSW incinerator residues
water washing
phosphate stabilisation
heavy metals
column leaching tests
leaching behaviour
Issue Date: Jun-2005
Publisher: SAGE Publications
Journal Title: Waste Management and Research
Volume: 23
Issue: 3
Start Page: 220
End Page: 229
Publisher DOI: 10.1177/0734242X05055322
PMID: 15988941
Abstract: Two new pre-treatment methods (water-washing/carbonation and carbonation/phosphate stabilisation) of municipal solid waste (MSW) incinerator residues were evaluated by column leaching tests under aerobic conditions and anaerobic conditions (which were changed to aerobic conditions after 10 months). A mixture of bottom ash and fly ash (5:1 ratio) was pre-treated using each method. Shredded incombustible residues (SIR) were added to each ash preparation in proportions similar to the ratios present in landfills. For comparison, landfill wastes typical of Japan, i.e., a mixture of bottom ash, chelating-pre-treated fly ash, and SIR, were also examined. Leachate samples were collected periodically and analysed over a 15-month period. When compared to chelating pre-treatment, both water-washing/carbonation and carbonation/phosphate stabilisation reduced the leaching of Pb, Al, and Cu by about 1-2 orders of magnitude. Moreover, the initial concentrations of Ca and Pb in leachates from column of water-washing/carbonation were 56-57% and 84-96% less than those from column of carbonation/phosphate stabilisation. Therefore, water-washing/carbonation was considered to be a promising approach to obtain early waste stabilisation and to reduce the release of heavy metals to near-negligible levels. The leaching behaviour of elements was also discussed.
Rights: Copyright © 2005 by International Solid Waste Association
Type: article (author version)
Appears in Collections:工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 金 相烈

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