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Adsorption of complex anion composed of heavy metal ion (Hg2+, Cd2+, or Zn, 2, +; initial concentration: 1.0 ppm) and inorganic anion (CN-, SCN-, or I-) on activated carbon prepared from coal by steam activation has been stuaied.<BR>From the adsorption of mercury(II) ion on activated carbon in the presence of cyanide or thiocyanate ion, cadmium ion in the presence of iodide ion, or zinc ion in the presence of cyanide or iodide ion, it was found that mercury(II), cadmium or zinc ion was easily adsorbed on activated carbon in the form of complex anion such as Hg(CN)42-, Hg (SCN)42-, Zn(CN)42-, or ZnI42-, respectively.<BR>These results suggest that the complex anion of heavy metal ion has unexpectedly strong affinity for a surface of activated carbon.
- 公益社団法人 日本化学会の論文
公益社団法人 日本化学会 | 論文
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