Assessment of heavy metal contamination and its mobilization from municipal solid waste open dumping site

Journal of Hazardous Materials
Tawach PrechthaiChettiyappan Visvanathan

Abstract

Influence of heavy metals was investigated by conducting various tests on the samples collected from Nonthaburi dumpsite in Thailand. The heavy metal concentration in the solid waste and its mobility potential based on its binding forms was studied. The sequential extraction method was used to determine the binding forms of metals. From the analysis, Zn was found to be highest concentrated heavy metal compared to Mn, Cu, Cr, Cd, Pb, Ni and Hg in the solid waste. From the sequential extraction, Mn, Zn and Cd mostly found in reducible form, showed its susceptibility to be leached easily. Cu and Cr were found predominantly in oxidizable form and stable under anaerobic condition. Pb and Ni were present in residual form, which is inert. The estimated individual contamination factor (C(f)(i)), showed Zn with highest affinity to leach. The concentration level of all the heavy metals in the leachate except for Cr was noticed to be below the National effluent standards. Though, indicated to be safe for disposal, its effect in any concentration proved toxic to the plant life from the seed germination toxicity test using synthetic chelate ethylene diamine tetraacetic acid (EDTA).

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Citations

May 26, 2009·Environmental Monitoring and Assessment·Lijuan WangXianglin Tu
Apr 13, 2010·Journal of Hazardous Materials·Yu-Yang LongWen-Jing Lu
Apr 7, 2009·The Science of the Total Environment·Yu-Yang LongDong-Sheng Shen
Jan 3, 2009·Bioresource Technology·Yu-Yang LongDong-Sheng Shen
May 16, 2015·Journal of the Air & Waste Management Association·Yidong GuanHaini Li
Jan 18, 2011·Journal of Hazardous Materials·Yu-Yang LongYan Zhao
Sep 3, 2013·Food and Chemical Toxicology : an International Journal Published for the British Industrial Biological Research Association·Tsanangurayi TongesayiChelsea Bray
Feb 12, 2017·Environmental Geochemistry and Health·Tsanangurayi TongesayiSunungurai Tongesayi
Oct 8, 2017·Environmental Monitoring and Assessment·Dharitri Choudhury, Susmita Gupta
Jun 26, 2018·Waste Management & Research : the Journal of the International Solid Wastes and Public Cleansing Association, ISWA·Mohit SomaniT R Sreekrishnan
Sep 7, 2017·Environmental Technology·Lifang Hu, Yuyang Long
Apr 17, 2010·Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering·Sanja M Sakan, Dragana S Dordević
Mar 27, 2019·International Journal of Environmental Research and Public Health·Navarro Ferronato, Vincenzo Torretta

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