利用化学浸提剂去除拟疏浚物中的重金属Cu和Zn

黎晓霞; 张珞平

环境化学

黎晓霞, 张珞平. 利用化学浸提剂去除拟疏浚物中的重金属Cu和Zn[J]. 环境化学, 2010, 29(6): 1054-1058.

引用本文:

黎晓霞, 张珞平. 利用化学浸提剂去除拟疏浚物中的重金属Cu和Zn[J]. 环境化学, 2010, 29(6): 1054-1058.

LI Xiaoxia, ZHANG Luoping. STUDY ON THE REMOVAL OF Cu AND Zn FROM DREDGED MATERIALS WITH CHEMICAL EXTRACTANTS[J]. Environmental Chemistry, 2010, 29(6): 1054-1058.

Citation:

LI Xiaoxia, ZHANG Luoping. STUDY ON THE REMOVAL OF Cu AND Zn FROM DREDGED MATERIALS WITH CHEMICAL EXTRACTANTS[J]. Environmental Chemistry, 2010, 29(6): 1054-1058.

利用化学浸提剂去除拟疏浚物中的重金属Cu和Zn

黎晓霞¹,
张珞平²

1.
佛山大学资源环境系, 佛山, 528000;
2.
厦门大学环境科学研究中心, 厦门, 316000
基金项目:
福建省科技重点资助项目(2004I001)

佛山大学校级课题资助

STUDY ON THE REMOVAL OF Cu AND Zn FROM DREDGED MATERIALS WITH CHEMICAL EXTRACTANTS

LI Xiaoxia¹,
ZHANG Luoping²

1.
Department of Resource and Environment, Foshan University, Foshan, 528000, China;
2.
Environmental Science Research Center, Xiamen University, Xiamen, 316000, China
Fund Project:

摘要: 采用搅拌、曝气试验研究了草酸、EDTA等试剂对厦门西海域马銮湾外湾拟疏浚物中重金属Cu、Zn的去除效果.并通过分批提取实验研究了草酸浸提拟疏浚物中Cu和Zn的影响因素如浓度、pH、固液比、提取时间等的影响.结果表明,Cu、Zn的螯合提取率随草酸溶液浓度的增加而增大,草酸溶液浓度为0.2mol·l-1为较适宜浓度;随反应时间增加而增大,反应时间24h可达到较好的处理效果;随pH降低而增大,结合实际处理pH值可选择3左右;随固液比降低而增大,固液比1:50处理效果较佳.
- 疏浚物 /
- Cu /
- Zn /
- 草酸 /
- 去除
Abstract: The agitation and aeration experiment were adopted to study the influence of chemical complexation reagents (e.g., H2C2O4, EDTA, etc.) on the removal of copper and zinc from dredged materials. Factors affecting the extraction of heavy metals in dredged materials using oxalate acid were studied through a series of laboratory-based experiments. A high oxalate acid concentration condition (e.g., oxalate acid concentration > 0.2 mol·l-1) and a long reaction time(e.g., extraction time > 24h) could improve metal removal efficiency. Alow pHcondition (e.g., pH<3) and a low solid to liquid ratio (e.g., S:L=1:50) could increase metal removal efficiency.
- dredged materials /
- Cu /
- Zn /
- oxalate acid /
- removal

[1]
[2]	何桂芳, 谢健, 田海涛,等. 海洋疏浚泥综合利用产业化道路的探索[J]. 海洋开发与管理, 2008(9):60-62
[3]	Rienks J. Comparison of results for chemical and thermal treatment of contaminated dredged sediments[J]. Wat Sci Tech, 1998, 37(6/7):355-362
[4]	Jones K, Feng H, Stern E, et al. Dredged material decontamination demonstration for the port of New York/New Jersey[J]. J Hazard Mater, 2001,85(1/2):127-143
[5]	Mulligan C, Yong R, Gibbs B. An evaluation of technologies for the heavy metal remediation of dredged sediments[J]. J Hazard Mater, 2001, 85(1/2):145-163
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[8]	黎晓霞, 张珞平, 叶歆,等. 疏浚物去污染技术的研究进展[J]. 海洋开发与管理, 2006, 23(6):125-128
[9]	Nystrom G, Ottosen L, Villumsen A. Test of experimental set-ups for electrodialytic removal of Cu, Zn, Pb and Cd from different contaminated harbour sediments[J]. Eng Geol, 2005, 77(3/4):349-357
[10]	曾敏, 廖柏寒, 曾清如,等. 3种萃取剂对土壤重金属的去除及其对重金属有效性的影响[J]. 农业环境科学学报, 2006, 25(4):979-982
[11]	United States Environmental Protection Agency Region 2,United States Army Corps of Engineers New York District, United States Department of Energy Brookhaven National Laboratory. Fast track dredged material decontamination demonstration for the port of New York and New Jersey. EPA 000-0-99000, 1999
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[15]	黄翠红, 孙道华, 李清彪,等. 利用柠檬酸去除污泥中镉、铅的研究[J]. 环境污染与防治, 2005, 27(1):73-75

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黎晓霞, 张珞平. 利用化学浸提剂去除拟疏浚物中的重金属Cu和Zn[J]. 环境化学, 2010, 29(6): 1054-1058.

引用本文:

黎晓霞, 张珞平. 利用化学浸提剂去除拟疏浚物中的重金属Cu和Zn[J]. 环境化学, 2010, 29(6): 1054-1058.

LI Xiaoxia, ZHANG Luoping. STUDY ON THE REMOVAL OF Cu AND Zn FROM DREDGED MATERIALS WITH CHEMICAL EXTRACTANTS[J]. Environmental Chemistry, 2010, 29(6): 1054-1058.

Citation:

LI Xiaoxia, ZHANG Luoping. STUDY ON THE REMOVAL OF Cu AND Zn FROM DREDGED MATERIALS WITH CHEMICAL EXTRACTANTS[J]. Environmental Chemistry, 2010, 29(6): 1054-1058.

利用化学浸提剂去除拟疏浚物中的重金属Cu和Zn

黎晓霞¹,
张珞平²

1. 佛山大学资源环境系, 佛山, 528000;
2. 厦门大学环境科学研究中心, 厦门, 316000

收稿日期: 2009-12-01

基金项目:

福建省科技重点资助项目(2004I001)

佛山大学校级课题资助

关键词:

疏浚物 /
Cu /
Zn /
草酸 /
去除

摘要: 采用搅拌、曝气试验研究了草酸、EDTA等试剂对厦门西海域马銮湾外湾拟疏浚物中重金属Cu、Zn的去除效果.并通过分批提取实验研究了草酸浸提拟疏浚物中Cu和Zn的影响因素如浓度、pH、固液比、提取时间等的影响.结果表明,Cu、Zn的螯合提取率随草酸溶液浓度的增加而增大,草酸溶液浓度为0.2mol·l-1为较适宜浓度;随反应时间增加而增大,反应时间24h可达到较好的处理效果;随pH降低而增大,结合实际处理pH值可选择3左右;随固液比降低而增大,固液比1:50处理效果较佳.

English Abstract

STUDY ON THE REMOVAL OF Cu AND Zn FROM DREDGED MATERIALS WITH CHEMICAL EXTRACTANTS

LI Xiaoxia¹,
ZHANG Luoping²

1. Department of Resource and Environment, Foshan University, Foshan, 528000, China;
2. Environmental Science Research Center, Xiamen University, Xiamen, 316000, China

Received Date: 2009-12-01

Fund Project:

Keywords:

dredged materials /
Cu /
Zn /
oxalate acid /
removal

Abstract: The agitation and aeration experiment were adopted to study the influence of chemical complexation reagents (e.g., H2C2O4, EDTA, etc.) on the removal of copper and zinc from dredged materials. Factors affecting the extraction of heavy metals in dredged materials using oxalate acid were studied through a series of laboratory-based experiments. A high oxalate acid concentration condition (e.g., oxalate acid concentration > 0.2 mol·l-1) and a long reaction time(e.g., extraction time > 24h) could improve metal removal efficiency. Alow pHcondition (e.g., pH<3) and a low solid to liquid ratio (e.g., S:L=1:50) could increase metal removal efficiency.

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利用化学浸提剂去除拟疏浚物中的重金属Cu和Zn

STUDY ON THE REMOVAL OF Cu AND Zn FROM DREDGED MATERIALS WITH CHEMICAL EXTRACTANTS

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利用化学浸提剂去除拟疏浚物中的重金属Cu和Zn

English Abstract

STUDY ON THE REMOVAL OF Cu AND Zn FROM DREDGED MATERIALS WITH CHEMICAL EXTRACTANTS

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