Removal of arsenic and cadmium with sequential soil washing techniques using Na2EDTA, oxalic and phosphoric acid: Optimization conditions, removal effectiveness and ecological risks
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- 作者：Meng Wei ; Jiajun Chen ; jeffchen@bnu.edu.cn" class="auth_mail" title="E-mail the corresponding author ; Xingwei Wang
- 关键词：Sequential soil washing ; Arsenic ; Cadmium ; Indices of metal mobility ; Indices of metal bioavailability
- 刊名：Chemosphere
- 出版年：2016
- 出版时间：August 2016
- 年：2016
- 卷：156
- 期：Complete
- 页码：252-261
- 全文大小：2235 K
文摘
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All of the influencing factors except temperature affected heavy metal removal efficiency.
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Sequential soil washing could decrease the bioavailability and potential mobility of metals.
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Washing agents and their order affected the soil environmental risks.
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Soil washing resulted in different levels of dissolution of residual fractions of metals.
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Phosphoric acid-oxalic acid-Na2EDTA sequence was considered to be the best washing order.