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- E-ISSN 2288-8985
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Removal of heavy metal by coprecipitation with barium sulfate
Analytical Science and Technology / Analytical Science and Technology, (P)1225-0163; (E)2288-8985
2006, v.19 no.4, pp.280-284
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(2006). Removal of heavy metal by coprecipitation with barium sulfate. Analytical Science and Technology, 19(4), 280-284.
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Abstract
The objective of this study is to investigate the removal of heavy metal by using the coprecipitation of barium sulfate. Several parameters governing the efficiency of the coprecipitation method were evaluated by the pH of sample solution, amount of coprecipitant, and addition of sulfide for the removal of As(V), Cd(II), Cr(III), Cr(VI), Cu(II), Hg(II) and Pb(II) metal ions (<TEX>$10{\mu}g/ml$</TEX> each). The coprecipitation was about 80% - 95% only for lead at low pH but under 10% for other ions. The amount of removal was about 95% - 100% for Cd, Hg, Pb, Cu in the all pH range by the addition of sulfide with barium sulfate but As(V) and Cr(III, VI) ions were not affected by the same conditions.
- keywords
- coprecipitation, ICP, barium sulfate
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