Elimination of As, Hg and Zn from synthetic solutions and industrial effluents using modified bark
- Lab. d`Environnement et de Mineralurgie, Vandoeuvre (France)
- ENSIB, Epinal (France)
Elimination of arsenic, mercury and zinc from synthetic solutions containing H{sub 3}AsO{sub 4}, HgCl{sub 2} and ZnCl{sub 2} using modified barks was investigated. The pH range was varied from 1 to 10. The initial concentrations of individual element were 10, 100 and 1,000 ppm. More than 99% of mercury and 65% of zinc cations were removed by the modified bark. In this case, the modified bark reacts as a cation exchanger leading to the release of two protons for every Hg{sup II} or Zn{sup II} fixed by this material. About 30% of arsenic was eliminated from the solution. This low efficiency could be attributed to the presence of arsenic as anion. Decontamination of a treated industrial effluent containing 4 ppm of ion metals was performed on a pilot scale by the modified bark. More than 70% of these ion metals were eliminated.
- OSTI ID:
- 78152
- Report Number(s):
- CONF-950201-; ISBN 0-87339-279-5; TRN: IM9531%%203
- Resource Relation:
- Conference: Annual meeting and exhibition of the Minerals, Metals and Materials Society (TMS), Las Vegas, NV (United States), 12-16 Feb 1995; Other Information: PBD: 1995; Related Information: Is Part Of Separation processes: Heavy metals, ions and minerals; Misra, M. [ed.] [Univ. of Nevada, Reno, NV (United States)]; PB: 302 p.
- Country of Publication:
- United States
- Language:
- English
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