Characterization of trace metal leachability from highway construction solid waste using the toxicity characteristic leaching procedure.

Clicks: 396
ID: 97781
2005
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Abstract
The potential risk of soil, surface and ground water contamination by trace metals leached from highway construction solid wastes is a major environmental concern. The objectives of this study were to evaluate trace metal leachability, toxicity of the leachate to aquatic organism and environmental impacts of highway construction solid waste (HCSW). Potential leachability, defined as the maximum metal pool that may become available for leaching at a constant pH 4 decreased in the following order: Zn > Ni > As > Pb > Cu. Potential metal leachability was controlled mainly by solid phase distribution of metals in wastes. The kinetics of metal release were determined using the cascade leaching test (CLT) with water at pH 4. With the exception of zinc in the first fraction, metal concentrations in all consecutive leaching fractions remained below the maximum permissible level in water for human consumption. The result of toxicity test showed that the leachates were in concentrations that did not exceed toxic concentrations for aquatic toxicity tests. The results indicate low risk of surface and ground water contamination resulting from highway construction solid wastes.
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olajire2005characterizationinternational Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Olajire, A A;Oluyemi, E A;Ayodele, E T;Fawole, O O;
Journal international journal of environmental health research
Year 2005
DOI
DOI not found
URL URL not found
Keywords
Capacity Management impacts research ranking solid waste global trend predictions

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