荀志祥^1,,
王世泽¹,
王明新¹,
王城晨¹,
朱颖一¹
1.常州大学环境与安全工程学院,常州 213164
基金项目: 江苏省政策引导类计划(产学研合作)-前瞻性联合研究项目(BY2015027-08)
江苏省高校“青蓝工程”培养对象资助项目

Remediation of heavy metal contaminated soil by ultrasound-enhanced washing with EDDS and EGTA

XUN Zhixiang^1,,
WANG Shize¹,
WANG Mingxin¹,
WANG Chengchen¹,
ZHU Yingyi¹
1.College of Environmental & Safety Engineering, Changzhou University, Changzhou 213164, China

-->

摘要
HTML全文
图(0)表(0)
参考文献(31)
相关文章
施引文献
资源附件(0)
访问统计

摘要:采用响应面法中的Box-Behnken实验设计，研究了超声强化N,N'-乙二胺二琥珀酸(EDDS)和乙二醇双(2-氨基乙基醚)四乙酸(EGTA)复合淋洗对土壤中Cu、Zn、Pb 和Cd 等4种重金属的去除效果，拟合了各重金属去除率、潜在生态风险指数削减率与EDDS投加量、EGTA投加量、超声功率和初始pH等淋洗条件之间的关系，模拟值与观测值相关性高，模拟精度较高。EGTA在较广pH范围对高生理毒性的Cd具有较强的洗脱效果，酸性条件下可有效洗脱Zn；Cu去除率在酸性条件下随着EDDS投加量的增加而显著提高，Pb去除率则在碱性条件随着EDDS投加量的增加而显著提高。基于模型优化结果的验证实验显示，当EDDS/重金属摩尔质量比为0.81、EGTA/重金属摩尔质量比为3.92、超声功率为569.85 W、pH为3.95时，潜在生态风险指数削减率最大，达到86.05%，Cu、Zn、Pb和Cd去除率分别为72.48%、62.40%、59.25%和87.45%，与模型拟合结果偏差较小，表明模型具有较好的拟合和预测能力。
关键词: 土壤污染修复/
超声/
EDDS/
EGTA/
响应面法/
潜在生态风险指数

Abstract:The Box-Behnken experimental design from response surface methodology was used to explore the efficiency of ultrasound-enhanced EDDS/EGTA washing for heavy metals (Cu, Zn, Pb, Cd) contaminated soil. The relationships between the removal rate of heavy metals, the removal rate of potential ecological risk index with the EDDS dose, the EGTA dose, the ultrasonic power and the initial solution pH were fitted. The correlation between simulated value and observed value was high and the simulation accuracy was high. EGTA showed significant removal rate of Cd with high biological toxicity in a wide range of pH and Zn under acidic condition. The removal rate of Cu increased significantly with the elevation of EDDS dose under acidic condition, while the removal rate of Pb increased significantly with the elevation of EDDS dosage in alkaline condition. The verification experiment designed according to optimization showed the potential ecological risk index reached 86.05% , and the Cu, Zn, Pb and Cd removal rates were 72.48%, 62.40%, 59.25% and 87.45%, respectively, when the EDDS/metals molar ratio was 0.81, the EGTA/metals molar was 3.92, the ultrasonic power was 569.85 W and the initial pH was 3.95. The deviation between the verification result and the simulation result was small, which showed that the model has good fitting and prediction ability.
Key words:soil pollution remediation/
ultrasound/
EDDS/
EGTA/
response surface methodology/
potential ecological risk index.

[1]	INOUE K.Heavy metal toxicity[J].Journal of Clinical Toxicology,2013,13(3):110-117 10.4172/2161-0495.S3-007
[2]	陈志良, 雷国建, 苏耀明, 等. 茶皂素与EDTA淋洗对土壤中铅、锌形态的影响[J]. 生态环境学报,2015,24(8):1394-1398 10.16258/j.cnki.1674-5906.2015.08.021
[3]	LEE C S, LI X, SHI W, CHEUNG S C, et al.Metal contamination in urban, suburban, and country park soils of Hong Kong:A study based on GIS and multivariate statistics[J].Science of the Total Environment,2006,356(1/2/3):45-61 10.1016/j.scitotenv.2005.03.024
[4]	OVES M, KHAN M S, ZAIDI A, et al.Soil Contamination, Nutritive Value, and Human Health Risk Assessment of Heavy Metals: An Overview[M].Vienna:Springer Vienna,2012:1-27
[5]	TORRES L G, LOPEZ R B, BELTRAN M.Removal of As, Cd, Cu, Ni, Pb, and Zn from a highly contaminated industrial soil using surfactant enhanced soil washing[J].Physics & Chemistry of the Earth,2012,37-39:30-36 10.1016/j.pce.2011.02.003
[6]	DERMONT G, BERGERON M, MERCIER G, et al.Soil washing for metal removal: A review of physical/chemical technologies and field applications[J].Journal of Hazardous Materials,2008,152(1):1-31 10.1016/j.jhazmat.2007.10.043
[7]	ELGHDALGREN K, ARWIDSSON Z, CAMDZIJA A, et al.Laboratory and pilot scale soil washing of PAH and arsenic from a wood preservation site: Changes in concentration and toxicity[J].Journal of Hazardous Materials,2009,172(2/3):1033-1040 10.1016/j.jhazmat.2009.07.092
[8]	尹雪, 陈家军, 吕策. 螯合剂复配对实际重金属污染土壤洗脱效率影响及形态变化特征[J]. 环境科学,2014,35(2):733-739
[9]	POCIECHA M, LESTAN D.Novel EDTA and process water recycling method after soil washing of multi-metal contaminated soil[J].Journal of Hazardous Materials,2012,201-202:273-279 10.1016/j.jhazmat.2011.11.092
[10]	POCIECHA M, KASTELEC D, LESTAN D.Electrochemical EDTA recycling after soil washing of Pb, Zn and Cd contaminated soil[J].Journal of Hazardous Materials,2011,192(2):714-721 10.1016/j.jhazmat.2011.05.077
[11]	刘霞, 王建涛, 张萌,等. 螯合剂和生物表面活性剂对Cu、Pb污染塿土的淋洗修复[J]. 环境科学,2013,34(4):1590-1597
[12]	YAN D Y S, LO I M C.Enhanced multi-metal extraction with EDDS of deficient and excess dosages under the influence of dissolved and soil organic matter[J].Environmental Pollution,2011,159(1):78-83 10.1016/j.envpol.2010.09.021
[13]	胡忻, 罗璐瑕, 陈逸珺. 生物可降解的螯合剂EDDS提取城市污泥中Cu,Zn,Pb和Cd[J]. 环境科学研究,2007,20(6):110-114
[14]	HAUSER L, TANDY S, RAINER SCHULIN A, et al.Column extraction of heavy metals from soils using the biodegradable chelating agent EDDS[J].Environmental Science & Technology,2005,39(17):6819-6824 10.1021/es050143r
[15]	冯静, 张增强, 李念,等. 铅锌厂重金属污染土壤的螯合剂淋洗修复及其应用[J]. 环境工程学报,2015,9(11):5617-5625 201
[16]	陈亚慧, 李君, 王明新,等.EGTA和酒石酸对蓖麻Cd胁迫与积累的调控作用[J]. 西北植物学报,2014,34(5):1025-1031
[17]	李雅嫔. 超声及酸化处理与EDTA联合工艺对重金属污染土壤的淋洗效果研究[D]. 保定:河北农业大学,2014
[18]	LEUNG A O W, DUZGORNENAYDIN N S, CHEUNG K C, et al.Heavy metals concentrations of surface dust from e-waste recycling and its human health implications in southeast China[J].Environmental Science & Technology,2008,42(7):2674-2680 10.1021/es071873x
[19]	KAZI T G, JAMALI M K, SIDDIQUI A, et al.An ultrasonic assisted extraction method to release heavy metals from untreated sewage sludge samples[J].Chemosphere,2006,63(3):411-420 10.1016/j.chemosphere.2005.08.056
[20]	KAZI T G, JAMALI M K, ARAIN M B, et al.Evaluation of an ultrasonic acid digestion procedure for total heavy metals determination in environmental and biological samples[J].Journal of Hazardous Materials,2009,161(2/3):1391-1398 10.1016/j.jhazmat.2008.04.103
[21]	WANG J P, CHEN Y Z, WANG Y, et al.Optimization of the coagulation-flocculation process for pulp mill wastewater treatment using a combination of uniform design and response surface methodology[J].Water Research,2011,45(17):5633-5640 10.1016/j.watres.2011.08.023
[22]	AHMAD A L, ISMAIL S, BHATIA S.Optimization of coagulation-flocculation process for palm oil mill effluent using response surface methodology[J].Environmental Science & Technology,2005,39(8):2828-2834 10.1021/es0498080
[23]	薛腊梅, 刘志超, 尹颖,等. 微波强化EDDS淋洗修复重金属污染土壤研究[J]. 农业环境科学学报,2013,32(8):1552-1557
[24]	金山. 白三叶对镉污染土壤的修复潜力研究[D]. 咸阳:西北农林科技大学,2013 咸阳
[25]	张春雷, 费小通, 李婷,等. 利用超声波辅助去除污染土壤中重金属的研究[J]. 环境科学与技术,2014,36(s1):121-124
[26]	YANG R X, LUO C L, ZHANG G, et al.Extraction of heavy metals from e-waste contaminated soils using EDDS[J].Journal of Environmental Sciences,2012,24(11):1985-1994 10.1016/S1001-0742(11)61036-X
[27]	HAKANSON L.An ecological risk index for aquatic pollution control：A sediment logical approach [J].Water Research,1980,14(8):975-1001 10.1016/0043-1354(80)90143-8
[28]	中国环境监测总站. 中国土壤元素背景值[M]. 北京:中国环境科学出版社,1990
[29]	李一蒙, 马建华, 刘德新,等. 开封城市土壤重金属污染及潜在生态风险评价[J]. 环境科学,2015,36(3):1037-1044
[30]	吴海健, 王建新, 黄建明, 等. 星点设计-效应面法优化柘树提取物片剂处方[J]. 复旦学报(医学版),2008,35(3):363-368
[31]	DIJKSTRA J J, MEEUSSEN J C L, COMANS R N J, et al.Leaching of heavy metals from contaminated soils:An experimental and modeling study[J].Environmental Science & Technology,2004,38(16):4390-4395 10.1021/es049885v

PDF下载( 2421 KB)XML下载导出引用Turn off MathJax -->
点击查看大图

计量

文章访问数:946
HTML全文浏览数:544
PDF下载数:384
施引文献:0

出版历程

刊出日期:2018-06-18

---

-->

超声强化EDDS/EGTA淋洗修复重金属污染土壤

荀志祥^1,,
王世泽¹,
王明新¹,
王城晨¹,
朱颖一¹
1.常州大学环境与安全工程学院,常州 213164
基金项目: 江苏省政策引导类计划(产学研合作)-前瞻性联合研究项目(BY2015027-08) 江苏省高校“青蓝工程”培养对象资助项目
关键词: 土壤污染修复/
超声/
EDDS/
EGTA/
响应面法/
潜在生态风险指数
摘要:采用响应面法中的Box-Behnken实验设计，研究了超声强化N,N'-乙二胺二琥珀酸(EDDS)和乙二醇双(2-氨基乙基醚)四乙酸(EGTA)复合淋洗对土壤中Cu、Zn、Pb 和Cd 等4种重金属的去除效果，拟合了各重金属去除率、潜在生态风险指数削减率与EDDS投加量、EGTA投加量、超声功率和初始pH等淋洗条件之间的关系，模拟值与观测值相关性高，模拟精度较高。EGTA在较广pH范围对高生理毒性的Cd具有较强的洗脱效果，酸性条件下可有效洗脱Zn；Cu去除率在酸性条件下随着EDDS投加量的增加而显著提高，Pb去除率则在碱性条件随着EDDS投加量的增加而显著提高。基于模型优化结果的验证实验显示，当EDDS/重金属摩尔质量比为0.81、EGTA/重金属摩尔质量比为3.92、超声功率为569.85 W、pH为3.95时，潜在生态风险指数削减率最大，达到86.05%，Cu、Zn、Pb和Cd去除率分别为72.48%、62.40%、59.25%和87.45%，与模型拟合结果偏差较小，表明模型具有较好的拟合和预测能力。

English Abstract

全文HTML

--> --> --> 参考文献 (31)