Removal of Cu, Pb and Zn in an applied electric field in calcareous and non-calcareous soils

Lisbeth M.Ottosen; Henrik K.Hansen; alexandra B.Ribeiro

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Removal of Cu, Pb and Zn in an applied electric field in calcareous and non-calcareous soils

机译：在钙质和非钙质土壤中施加电场中的Cu，Pb和Zn去除

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The pH dependency of the removal of Cu, Zn and Pb by electrodialytics soil remediation from different industrially polluted soils was examined. From 18 experiments performed with five dif- ferent soils, it was found that the order of mobilization due to a pH decrease was Zn>Cu>pb. It was found, too, that each f the elements was removed at higher soil pH in calcareous soils (about 12/100 carbonates) than in soils with a carbonate content of less than 3.7/100. IN soils rich in carbonates, precipitation of heavy metal carbonates is an important retenition mechanism and the heavy metal carbonates are dissolved at higher pH values than the pH at which heavy metals are desorbed in non-calcareous soils.

机译：考察了通过电渗析土壤修复不同工业污染土壤去除Cu，Zn和Pb的pH依赖性。在五个不同土壤上进行的18个实验中，发现由于pH降低而引起的迁移顺序为Zn> Cu> pb。还发现，钙质土壤（碳酸盐含量约为12/100）比碳酸盐含量小于3.7 / 100的土壤中的每一种元素都被去除。在富含碳酸盐的土壤中，重金属碳酸盐的沉淀是重要的保留机制，并且重金属碳酸盐在比非钙质土壤中解吸重金属的pH高的pH值下溶解。

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来源
《Journal of Hazardous Materials》 |2001年第3期|p.291-299|共9页
作者
Lisbeth M.Ottosen; Henrik K.Hansen; alexandra B.Ribeiro;
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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
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正文语种 eng
中图分类工程基础科学;
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Removal of Cu, Pb and Zn in an applied electric field in calcareous and non-calcareous soils

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