EDTA络合剂和酸度控制对土壤Cd动电过程的影响
以重金属Cd污染土壤为对象,研究了阴阳控制液对Cd在土壤中的动电过程的影响。结果表明,硝酸控制阴极液,Cd聚集于距阳极距离/土壤室长度（Z/L）为0.5～1.0的土壤层内;阴极液中加入乙二胺四醋酸（EDTA）络合剂,Cd聚积于Z/L为0～0.5范围的土壤层内,通电时间延长到720h,最高浓度出现于Z/L=0.3处,说明延长通电时间Cd螯合络合离子大部分迁出土壤。通过对电流密度的变化分析进一步证明了阴极液中加EDTA络合剂能够有效去除pH缓冲能力强的土壤中的Cd污染物。...
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| Published in | Guangdong nong ye ke xue Vol. 37; no. 6; pp. 104 - 106 |
|---|---|
| Main Author | |
| Format | Journal Article |
| Language | Chinese |
| Published |
福建农林大学资源与环境学院,福建,福州,350002%福州大学环境与资源学院,福建,福州,350002
2010
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| Subjects | |
| Online Access | Get full text |
| ISSN | 1004-874X |
| DOI | 10.3969/j.issn.1004-874X.2010.06.044 |
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| Abstract | 以重金属Cd污染土壤为对象,研究了阴阳控制液对Cd在土壤中的动电过程的影响。结果表明,硝酸控制阴极液,Cd聚集于距阳极距离/土壤室长度（Z/L）为0.5～1.0的土壤层内;阴极液中加入乙二胺四醋酸（EDTA）络合剂,Cd聚积于Z/L为0～0.5范围的土壤层内,通电时间延长到720h,最高浓度出现于Z/L=0.3处,说明延长通电时间Cd螯合络合离子大部分迁出土壤。通过对电流密度的变化分析进一步证明了阴极液中加EDTA络合剂能够有效去除pH缓冲能力强的土壤中的Cd污染物。 |
|---|---|
| AbstractList | X53; 以重金属Cd污染土壤为对象,研究了阴阳控制液对Cd在土壤中的动电过程的影响.结果表明,硝酸控制阴极液,Cd聚集于距阳极距离/土壤室长度(Z/L)为0.5～1.0的土壤层内;阴极液中加入乙二胺四醋酸(EDTA)络合剂,Cd聚积于Z/L为0～0.5范围的土壤层内,通电时间延长到720 h,最高浓度出现于Z/L=0.3处,说明延长通电时间Cd螯合络合离子大部分迁出土壤.通过对电流密度的变化分析进一步证明了阴极液中加EDTA络合剂能够有效去除pH缓冲能力强的土壤中的Cd污染物. 以重金属Cd污染土壤为对象,研究了阴阳控制液对Cd在土壤中的动电过程的影响。结果表明,硝酸控制阴极液,Cd聚集于距阳极距离/土壤室长度（Z/L）为0.5～1.0的土壤层内;阴极液中加入乙二胺四醋酸（EDTA）络合剂,Cd聚积于Z/L为0～0.5范围的土壤层内,通电时间延长到720h,最高浓度出现于Z/L=0.3处,说明延长通电时间Cd螯合络合离子大部分迁出土壤。通过对电流密度的变化分析进一步证明了阴极液中加EDTA络合剂能够有效去除pH缓冲能力强的土壤中的Cd污染物。 |
| Author | 林君锋 王果 李玉林 |
| AuthorAffiliation | 福建农林大学资源与环境学院,福建福州350002 福州大学环境与资源学院,福建福州350002 |
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| Author_FL | LIN Jun-feng WANG Guo LI Yu-lin |
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| DocumentTitleAlternate | Effect of EDTA and acdity control on electrokinetic process of Cadmium in soil |
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| Keywords | 镉 动电过程 污染土壤 |
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| Snippet | ... X53; 以重金属Cd污染土壤为对象,研究了阴阳控制液对Cd在土壤中的动电过程的影响.结果表明,硝酸控制阴极液,Cd聚集于距阳极距离/土壤室长度(Z/L)为0.5～1.0的土壤层内;阴极液中加入乙二胺四醋酸(EDTA)络合剂,Cd聚积于Z/L为0～0.5范围的土壤层内,通电时间延长到720... |
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| SubjectTerms | 动电过程 污染土壤 镉 |
| Title | EDTA络合剂和酸度控制对土壤Cd动电过程的影响 |
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