凹凸棒土-腐植酸复合体对Pb(Ⅱ)的吸附特性及机理研究OA北大核心CSCDCSTPCD
Characteristics and Mechanisms of Pb(Ⅱ)Adsorption on Palygorskite-Humic Acid Complex
通过吸附实验,研究了凹凸棒土-腐植酸复合体对Pb(Ⅱ)的吸附特性及机理.结果表明,复合体对Pb(Ⅱ)的吸附量显著高于各自单一的吸附量;当pH>4,凹凸棒土-腐植酸复合体对Pb(Ⅱ)的吸附量有所增加,这与其等电点有关;凹凸棒土-腐植酸复合体较凹凸棒土上Pb(Ⅱ)的解吸率小,且解吸率随Pb(Ⅱ)吸附浓度升高而降低;凹凸棒土-腐植酸复合体溶液中溶解态腐植酸的量较单-腐植酸溶液有显著增加;红外光谱(IR)表明凹凸棒土-腐植酸复合体在吸附Pb(Ⅱ)后…查看全部>>
The characteristics and mechanisms of Pb( Ⅱ ) adsorption by the complex of palygorskite and humic acid were studied in the present paper. The results showed that the quantity of Pb( Ⅱ ) adsorption on the complex of palygorskite and humic acid was higher than those on the palygorskite or humic acid alone. The sorption quantity of Pb( Ⅱ ) on the complex of palygorskite and humic acid increased significantly with pH>4. The desorption percentage of Pb( Ⅱ ) fr…查看全部>>
王意锟;郝秀珍;王玉军;周东美;张焕朝
南京林业大学森林资源与环境学院,江苏,南京,210037土壤环境与污染修复重点实验室,中国科学院南京土壤研究所,江苏,南京,210008土壤环境与污染修复重点实验室,中国科学院南京土壤研究所,江苏,南京,210008土壤环境与污染修复重点实验室,中国科学院南京土壤研究所,江苏,南京,210008土壤与农业可持续发展国家重点实验室,中国科学院南京土壤研究所,江苏,南京,210008
资源环境
凹凸棒土腐植酸Pb(Ⅱ)吸附
palygorskite humic acid Pb( Ⅱ ) adsorption
《农业环境科学学报》 2009 (11)
畜禽粪肥对红壤菜地重金属污染过程的影响及其调控机理
2324-2327,4
中国科学院知识创新工程重要方向项目(kzcx2-yw-404):国家自然科学基金项目(30700480)重大科学研究计划(2007CB936604)
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