| 硫酸铁氧化物的表征及其对重金属吸附作用的研究 |
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| 引用本文： | 栾兆坤,汤鸿霄.硫酸铁氧化物的表征及其对重金属吸附作用的研究[J].环境科学学报,1994,14(2):129-136. |
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| 作者姓名： | 栾兆坤 汤鸿霄 |
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| 作者单位： | 中国科学院生态环境研究中心 |
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| 摘 要： | 根据酸性矿山废水污染河流的特征，着重研究了硫酸铁溶液中和沉淀生成的无定形氧化铁颗粒的表面特性及其对重金属离子的吸附作用，并以硝酸铁溶液中和沉淀生成的无定形氧化铁颗粒作对比，同时应用表面络合反应关系求取了该颗粒的表面络合反应的基本特征参数，最后采用简化的表面络合模式计算了该氧化铁颗粒表面与重金属离子，如Ｃｕ＾２＋，Ｃｄ＾２＋和Ｐｂ＾２＋结合的表面络合形成条件稳定常数。
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| 关 键 词： | 氧化铁 表面络合 吸附 模式 水体 重有色金属 |
| 收稿时间： | 9/3/1990 12:00:00 AM |
SURFACE CHARACTERS AND ADSORPTION OF HEAVY METAL IONS ON AMORPHOUS IRON OXYHYDROXIDE |
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| Luan Zhaokun and Tang Hongxiao.SURFACE CHARACTERS AND ADSORPTION OF HEAVY METAL IONS ON AMORPHOUS IRON OXYHYDROXIDE[J].Acta Scientiae Circumstantiae,1994,14(2):129-136. |
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| Authors: | Luan Zhaokun and Tang Hongxiao |
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| Affiliation: | Research Center for Eco-Environmental Sciences,Chinese Academy of Sciences,Beijing l00085 and Research Center for Eco-Environmental Sciences,Chinese Academy of Sciences,Beijing l00085 |
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| Abstract: | Surface characters of amorphous iron oxyhydroxide(from Fe_2(SO_4)_3),such as its surface charge density,pH_(zpc),pH_(iep)and intrinsic ionization con-stants, were investigated and calculated by potentiometric titration,electro-phoretic mobility measurement and the stoichiometry of surface reactions.ad-sorption character of heavy metal ions on the amorphous iron oxyhydroxide were also studied as a function of pH and concentrations.A simplified sur-face complexation model was used to calculate the conditional binding cons-tants for surface complexation of metal ions on amorphous iron oxyhydroxide |
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| Keywords: | amorphous iron oxyhydroxide surface characters adsorption metals surface complexation model |
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