publication . Research . 2006

Soil Chemistry Effect on Feasibility of Cr-decontamination by Acid-Washing

Isoyama, Masahiro; Wada, Shin-Ichiro;
Open Access English
  • Published: 01 Feb 2006 Journal: 九州大学大学院農学研究院紀要, volume 51, issue 1, pages 33-36 (issn: 0023-6152, Copyright policy)
  • Publisher: Faculty of Agriculture, Kyushu University
Abstract
Soil washing with sample acid jas been proven to be effective for removal of cationic heavy metals from contaminated soils. Since the obsorption of anitonic heavy metals is enhanced in acidic medium, the efficiency of acid-washing may not be guaranteed for soils that are doubly contaminated with cationic and anitonic heavy metals. To evaluate the efficiensy of acid-washing, nine soils are artifically contaminated with chromate and chromium was extracted with hydrochrolic acid of 0.5 mmol L[-1] to 1mol L[-1]. A part of spiked chromate was reduced to trivalent chromium and the remaining chromate ions were almost quantitatively extracted witht the hydrochloric acid...
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Research . 2006
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