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Article

Characterization of Landfill Leachates and Sediments in Major Cities of Indochina Peninsular Countries—Heavy Metal Partitioning in Municipal Solid Waste Leachate

1
Department of Civil and Environmental Engineering, Graduate School of Engineering, Tokyo Institute of Technology, Tokyo 152-8550, Japan
2
Department of Environmental Engineering, Faculty of Engineering, Kasetsart University, Bangkok 10900, Thailand
3
Research and Innovation Center, Institute of Technology of Cambodia, PO Box 86 Russian Federation, Phnom Penh 12000, Cambodia
4
College of Engineering, University of the Philippines, Diliman 1101, Philippines
*
Author to whom correspondence should be addressed.
Environments 2018, 5(6), 65; https://doi.org/10.3390/environments5060065
Received: 27 April 2018 / Revised: 27 May 2018 / Accepted: 31 May 2018 / Published: 3 June 2018
(This article belongs to the Special Issue Environmental Toxicology of Trace Metals)
In this study, leachate and sediment samples were collected from the leachate drains, ponds and waste pits of three landfills in the Indochina peninsula to investigate the level of contamination of biochemical parameters, especially heavy metals. In-situ and laboratory measurements were conducted, together with site surveys to discuss the effects of site characteristics on leachate qualities. It was confirmed from the investigation that the changes in leachate qualities are mainly caused by the landfill site conditions, e.g., soil cover, the waste compaction level, waste thickness, dumping method, and leachate storage, and that these conditions lead to different levels of dilution and biochemical reaction of the leachate. Most of the biochemical parameters of the fresh leachates were greater than the effluent standards, and showed higher concentrations than those measured for the leachate in large storage ponds. The concentrations of the parameters were higher in the dry season than the wet season for all fresh leachate samples, but no significant seasonal difference was observed in the large leachate storage ponds. The majority of heavy metals were partitioned in the suspended solids, and no clear seasonal change of heavy metal contents was contained in the suspended solids and sediment samples. View Full-Text
Keywords: solid waste; landfill leachates; suspended solids; sediment; heavy metal; partitioning solid waste; landfill leachates; suspended solids; sediment; heavy metal; partitioning
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MDPI and ACS Style

Xaypanya, P.; Takemura, J.; Chiemchaisri, C.; Seingheng, H.; Tanchuling, M.A.N. Characterization of Landfill Leachates and Sediments in Major Cities of Indochina Peninsular Countries—Heavy Metal Partitioning in Municipal Solid Waste Leachate. Environments 2018, 5, 65. https://doi.org/10.3390/environments5060065

AMA Style

Xaypanya P, Takemura J, Chiemchaisri C, Seingheng H, Tanchuling MAN. Characterization of Landfill Leachates and Sediments in Major Cities of Indochina Peninsular Countries—Heavy Metal Partitioning in Municipal Solid Waste Leachate. Environments. 2018; 5(6):65. https://doi.org/10.3390/environments5060065

Chicago/Turabian Style

Xaypanya, Phetyasone, Jiro Takemura, Chart Chiemchaisri, Hul Seingheng, and Maria A.N. Tanchuling 2018. "Characterization of Landfill Leachates and Sediments in Major Cities of Indochina Peninsular Countries—Heavy Metal Partitioning in Municipal Solid Waste Leachate" Environments 5, no. 6: 65. https://doi.org/10.3390/environments5060065

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