固定配比的钠化膨润土与土壤在不同pH条件下对 重金属离子的吸附效果研究

谭科艳; 刘晓端; 黄园英; 陈燕芳

固定配比的钠化膨润土与土壤在不同pH条件下对重金属离子的吸附效果研究

1.
国家地质实验测试中心, 北京 100037
2.
国家地质实验测试中心, 北京 100037
3.
国家地质实验测试中心, 北京 100037
4.
国家地质实验测试中心, 北京 100037

基金项目:

国家科技支撑计划课题资助(2006BAJ05A08-04)

国家科技支撑计划课题资助(2006BAJ14B07-03)

国土资源部公益性行业科研专项经费资助(200911015-05)

国家地质实验测试中心基本科研业务费项目资助 (2009CSJ07)

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出版历程
- 收稿日期: 2010-03-02
- 修回日期: 2010-06-04

Study on Adsorption Effects of Heavy Metal Ions by Reformed Soils with Fixed Ratios of Sodiummodified Bentonite to Soil at Different pH Conditions

1.
National Research Center for Geoanalysis, Beijing 100037, China
2.
National Research Center for Geoanalysis, Beijing 100037, China
3.
National Research Center for Geoanalysis, Beijing 100037, China
4.
National Research Center for Geoanalysis, Beijing 100037, China

摘要

摘要: 研究了固定配比的钠化膨润土与土壤在不同pH条件下对重金属离子的吸附效果。钠化膨润土与污染土壤按质量比1∶10和1∶20的比例混合,用碳酸氢铵-二乙三胺五乙酸(AB-DTPA)法提取土壤中有效态重金属。结果表明,在钠化膨润土与土壤质量比为1∶20的条件下,取得了最佳的修复效果;在pH=9.14时该混合土壤对重金属的总体吸附效果最佳。在实际土壤修复中,针对不同重金属污染,应灵活调整修复材料与污染土壤的配比和土壤的pH条件。
- 重金属 /
- 钠化膨润土 /
- 修复 /
- 配比 /
- pH条件 /
- 土壤
Abstract: The adsorption effects of heavy metals by reformed soils with fixed ratios of 1∶10 and 1∶20 of sodiummodified bentonite (SB) to local soil (LS) at different pH conditions were studied. Heavy metals in the soils were extracted using AB-DTPA method. The results showed that the adsorption effect for heavy metals by reformed soil with ratio of 1∶20 (SB/LS) was better than the reformed soil with 1∶10 (SB/LS). And the reformed soil with ratio of 1∶20 (SB/LS) and at pH=9.14 exhibited the best adsorption effect for heavy metals. The results also showed that in the actual soil remediation, the ratios of remediation materials to local soils and soil pH conditions should be flexible and adjustable for different heavy metal polluted soils.
- heavy /
- metal /
- sodiummodified /
- bentonite /
- soil /
- remediation

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参考文献(8)

Robinson B H, Brooks R R, Clothier B E.Soil amendments affecting nickel and cobalt uptake by berkheya coddii: Potential use for phytomining and phytoremediation[J].Annals of Botany,1999,84:689-694.

Covelo E F, Vega F A, Andrade M L.Competitive sorption and desorption of heavymetals by individual soilcomponents[J].Journal of Hazardous Materials,2007,140:308-315.

Kumpiene J, Lagerkvist A, Maurice C. Stabilization of As, Cr, Cu, Pb and Zn in soil using amendments—A review[J].Waste Management,2008,28(1):215-225.

Mahabadi A A, Hajabbasi M A, Khademi H, Kazemian H.Soil cadmium stabilization using an Iranian natural zeolite[J].Geoderma,2007,137(3-4):388-393.

Demirbs , Alkan M, Dogan M, Turhan Y, Namli H, Turan P.Electrokinetic and adsorption properties of sepiolite modified by 3-aminopropyltriethoxysilane[J].Journal of Hazardous Materials,2007,149(3):650-656.

Malandrino M, Abollino O, Giacomino A, Aceto M, Mentasti E.Adsorption of heavy metals on vermiculite: Influence of pH and organic ligands[J].Journal of Colloid and Interface Science,2006, 299: 537-546.

Reddy M R, Perkins H F.Fixation of manganese by clay minerals[J].Soil Science,1976,121:21-24.

范迪富,黄顺生,廖启林,朱佰万,潘永敏,王伟,唐海燕.不同量剂凹凸棒对镉污染菜地的修复实验[J].江苏地质,2007,31(4):323-328.

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