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Comparative Study on the Leaching Characteristics of Industrial Sludge and Fly Ash using KSLP and TCLP Techniques

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dc.contributor.author BYUNG-KEUN LEE
dc.contributor.author HYEON-WOOK HWANG
dc.contributor.author TAHlR IMRAN QURESHI
dc.contributor.author YOUNG-JU KIM
dc.date.accessioned 2023-11-03T04:43:49Z
dc.date.available 2023-11-03T04:43:49Z
dc.date.issued 2010-10-20
dc.identifier.citation Lee, B. K., Hwang, H. W., Qureshi, T. I., & Kim, Y. J. (2010). Comparative study on the leaching characteristics of industrial sludge and fly ash using KSLP and TCLP techniques. J. Chem. Soc, 32, 538-643. en_US
dc.identifier.issn 0253-5106
dc.identifier.uri http://142.54.178.187:9060/xmlui/handle/123456789/19907
dc.description.abstract Leaching characteristics of industrial sludge and fly ash using Korean Standard Leaching Procedure (KSLP) and Toxicity Characteristics Leaching Procedure (TCLP) were studied. Possibilities of re-adsorption of heavy metal ions on the surface of sludge and ash during the course of leaching were also investigated. KSLP looked relatively more aggressive than the TCLP in leaching heavy metal ions. Concentrations of metal ions leached in both the methods, however, were found very low in comparison to the concentration of ions present in the original samples. In case of sludge, heavy metal ions showed relatively high rate of leaching at 4th and 5th stages of sequential extraction while ash showed high rate of leaching at the first three stages of extraction. Some of the concentrations of heavy metal ions leached out in the tests also found to be adsorbed on the surface of sludge and ash. Heavy metal ions present in high concentrations in the sample showed lower rate of adsorption than their leaching rate. No distinct difference in the results of KSLP and TCLP was observed. However, variations in the leaching results could be due to the different nature of hazardous waste and leaching conditions. More information like kinetics of leaching, mineralogical characteristics of waste and site characteristics of landfill were required to predict more accurate leaching behavior of ions in natural conditions. en_US
dc.description.sponsorship The chemical society of Pakistan is an approved society from the PSF. en_US
dc.language.iso en en_US
dc.publisher HEJ Research Institute of Chemistry, University of Karachi, Karachi. en_US
dc.title Comparative Study on the Leaching Characteristics of Industrial Sludge and Fly Ash using KSLP and TCLP Techniques en_US
dc.type Article en_US


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