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| 膨润土对底泥重金属的抑制效果及机制探讨 | |
| 引用本文： | 章萍,钱光人,周文斌,孙凯璇,汪涛.膨润土对底泥重金属的抑制效果及机制探讨[J].南昌大学学报(工科版),2012,34(4):337-340,346. |
| 作者姓名： | 章萍 钱光人 周文斌 孙凯璇 汪涛 |
| 作者单位： | 1. 南昌大学教育部鄱阳湖生态与生物资源利用实验室,江西南昌330047;南昌大学环境与化学工程学院,江西南昌330031;上海大学环境与化学工程学院,上海200072 2. 上海大学环境与化学工程学院,上海,200072 3. 南昌大学教育部鄱阳湖生态与生物资源利用实验室,江西南昌330047;南昌大学环境与化学工程学院,江西南昌330031 |
| 基金项目： | 国家高技术研究发展计划(863计划)资助项目 |
| 摘 要： | 采用底泥原地稳定化处理技术中的帽封方法,考察膨润土对苏州河底泥中Cu2＋、Pb2＋和Zn2＋3种重金属离子释放的抑制效果。结果表明：钙基膨润土对Cu2＋、Pb2＋和Zn2＋的最大吸附容量分别为273.4 mg.g-1、473.6mg.g-1和263 mg.g-1;均具有较强的吸附性能;且在溶液pH值升高时,其对Cu2＋、Pb2＋和Zn2＋的吸附效果增强。在Zn-Pb混合体系下,钙基膨润土对Pb2＋吸附效果增强,Zn2＋的吸附效果不明显;而在Zn-Cu混合体系下,钙基膨润土对Cu2＋效果增强,对Zn2＋的吸附效果减弱。 |
| 关 键 词： | 底泥 原地稳定化 帽封 膨润土 重金属 |
Suppressing Cu2+ , Pb2+ and Zn2+ Ions Liberation from Suzhou Creck Sediment Used by Bentonite |
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| ZHANG Ping , QIAN Guang-ren , ZHOU Wen-bin , SUN Kai-xuan , WANG Tan.Suppressing Cu2+ , Pb2+ and Zn2+ Ions Liberation from Suzhou Creck Sediment Used by Bentonite[J].Journal of Nanchang University(Engineering & Technology Edition),2012,34(4):337-340,346. | |
| Authors: | ZHANG Ping QIAN Guang-ren ZHOU Wen-bin SUN Kai-xuan WANG Tan |
| Affiliation: | ZHANG Pinga,b,QIAN Guang-ren,ZHOU Wen-bina,b, SUN Kai-xuana,b,WANG Tana,b(1a.Key Laboratory of Poyang Lake Environment and Resource Utilization,Ministry of Education, Nanchang University,Nanchang 330047,China; 1b.School of Environmental and Chemical Engineering,Nanchang University,Nanchang 330031,China; 2.College of Environmental and Chemical Engineering,Shanghai University,Shanghai 200072,China) |
| Abstract: | The effect of suppression on Cu2＋,Pb2＋ and Zn2＋ heavy metal ions from Suzhou Creck sediment by using calcium bentonite as capping material for in-situ sediment treatment.The results showed that the maximum adsorption capacity of Cu2＋,Pb2＋ and Zn2＋ were 273.4 mg·g-1,473.6 mg·g-1 and 263 mg·g-1,respectively.And the adsorption efficiency of bentonite on these metal ions was increased with pH increasing.In Zn-Pb coexisting system,the adsorption efficiency of bentonite on Pb2＋ ion was increased obviously.However,the little effect on Zn2＋ was found.The adsorption efficiency of bentonite on Cu2＋ ion was enchanced in Zn-Cu coexisting system,but which was decreased on Zn2＋. |
| Keywords: | sediment in-situ treatment capping method bentonite heavy metal |
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