Leaching of metals on stabilization of metal sludge using cement based materials.

Leaching of metals on stabilization of metal sludge using cement based materials. Research Abstract Details 

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Leaching of metals on stabilization of metal sludge using cement based materials. Abstract Text:

Carmalin A Sophia,K Swaminathan,

Toxicity characteristic leaching procedure(TCLP) of zinc plating sludge was carried out to assess the leaching potential of the sludge and the leachates were analyzed for heavy metals. The concentration of zinc, chromium, and lead in the leachate were 371.5 mg/L, 1.95 mg/L and 1.99 mg/L respectively. Solidification of zinc sludge was carried out using four different binder systems consisting of cement mortar, fly ash, clay and lime and cured for 28 d. The ratio of sludge added varied from 60% to 80% by volume. The solidified products were tested for metal fixing efficiency and physical strength. It was observed that the volume of sludge added that resulted in maximum metal stabilization was 60% for all the combinations, above which the metal fixation efficiency decreased resulting in high values of zinc in the leachate. Addition of 5% sodium silicate enhanced the chemical fixation of metals in all the binder systems. Among the four fixing agents studied, mixture of fly ash: lime, and cement mortar: lime stabilized zinc and other metals in the sludge effectively than other combinations. Addition of lime increased the stabilization of zinc whereas cement mortar increased the strength of the solidified product.

Leaching of metals on stabilization of metal sludge using cement based materials. Publishing Authors By Initials

CA Sophia,K Swaminathan,

For similar complex mixtures: waste products research abstracts see: complex mixtures: waste products research

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Leaching of metals on stabilization of metal sludge using cement based materials. Journal Published:

PUBLICATION TYPE: Research Support, Non-U.S. Gov

Journal: Journal of environmental sciences (China)

VOLUME: 17

Page Numbers: 115-8

Journal Abbreviation: J Environ Sci (China)

ISSN: 1001-0742

DAY: 8

MONTH: 02

YEAR: 2005

Leaching of metals on stabilization of metal sludge using cement based materials. Information

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LANGUAGE: eng

NlmUniqueID: 100967627

Leaching of metals on stabilization of metal sludge using cement based materials. Keywords Mesh Terms:

KEYWORDS: Waste Products

MESH TERMS: analysis

Chemical & Substance for Abstract: Leaching of metals on stabilization of metal sludge using cement based materials. Information

Substance Name: Silicon Dioxide

Registry Number: 7631-86-9

Grant and Affiliation Information for Leaching of metals on stabilization of metal sludge using cement based materials.

AFFILIATION: National Environmental Engineering Research Institute, Chennai Zonal Laboratory, CSIR Campus, Taramani, Chennai-600113, India.

Country: Netherlands

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MEDLINETA: J Environ Sci (China)

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