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Accuracy of COD test for lanfill leachates
Luleå tekniska universitet.
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Geosciences and Environmental Engineering.ORCID iD: 0000-0001-7158-4662
2003 (English)In: Water, Air and Soil Pollution, ISSN 0049-6979, E-ISSN 1573-2932, Vol. 146, no 1-4, p. 153-169Article in journal (Refereed) Published
Abstract [en]

COD (chemical oxygen demand) has historically been considered to be an estimate of organic matter, and though this is no longer the case, for most kinds of water it is still a fair approximation. Landfill leachates may, however, be one of the exceptions. Landfill leachate contains many inorganic substances and, in certain circumstances, high concentrations of volatile organic compounds like acetic acid; the COD value may be affected by these conditions. Designed experiments were performed to determine how COD could be affected by the composition of landfill leachates. The factors studied include the content of iron(II), manganese(II), sulphide, ethanol, acetic acid, ammonia, and chloride as well as different aspects of the COD analysis design. The results show that up to about one-third of COD may be due to the inorganic components of leachates. The main conclusion from the experiments is that COD cannot be used solely as a measure of the organic matter of landfill leachate since inorganic substances as well as interactions between substances may interfere with the COD results.

Place, publisher, year, edition, pages
2003. Vol. 146, no 1-4, p. 153-169
National Category
Other Environmental Engineering
Research subject
Waste Science and Technology
Identifiers
URN: urn:nbn:se:ltu:diva-8978DOI: 10.1023/A:1023925508322ISI: 000183108400010Scopus ID: 2-s2.0-0038683160Local ID: 78862320-6f5d-11db-962b-000ea68e967bOAI: oai:DiVA.org:ltu-8978DiVA, id: diva2:981916
Note
Validerad; 2003; 20060921 (pafi)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2018-07-10Bibliographically approved

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Ecke, HolgerLagerkvist, Anders

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