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Leaching characteristics of fly ash from Chinese medical waste incineration
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Geosciences and Environmental Engineering.
School of Energy and Environment, Southeast University, Nanjing.
2012 (English)In: Waste Management & Research, ISSN 0734-242X, E-ISSN 1096-3669, Vol. 30, no 3, p. 285-294Article in journal (Refereed) Published
Abstract [en]

Many of the characteristics of typical medical waste ash can be found by using ash leaching experiments. The present study investigated the characteristics of fly ash derived from incineration of medical waste in China. The particle diameter of the fly ash was in the range 154-900 µm. Elemental analyses of the fly ash indicated that it contained calcium, aluminium, iron, sodium, potassium and magnesium, and that copper, lead, chromium and mercury were the dominant heavy metals it contained. As leaching time was increased the leaching concentrations of the heavy metals increased and the leaching toxicity was augmented. When the pH was neutral, the concentrations of most heavy metals in the leachate were minimum whereas when the pH was alkali or acid, the leaching toxicity was greatly enhanced. High temperature melting was found to be a good method of fixing heavy metals, and the main components of the sinter were Fe3O4, SiO2, CaSO4 and CaSiO3, etc.

Place, publisher, year, edition, pages
2012. Vol. 30, no 3, p. 285-294
National Category
Other Environmental Engineering
Research subject
Waste Science and Technology
Identifiers
URN: urn:nbn:se:ltu:diva-3750DOI: 10.1177/0734242X10375588ISI: 000301292900008PubMedID: 20601401Scopus ID: 2-s2.0-84858394899Local ID: 194ceb50-0842-11e0-b767-000ea68e967bOAI: oai:DiVA.org:ltu-3750DiVA, id: diva2:976610
Note

Validerad; 2012; 20101215 (ysko)

Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2018-07-10Bibliographically approved

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Tan, Zhongxin

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