| 磷酸改性凹凸棒粘土对Pb2+的吸附研究 |
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| 引用本文： | 周守勇,薛爱莲,张艳,王红艳,赵宜江.磷酸改性凹凸棒粘土对Pb2+的吸附研究[J].环境工程学报,2006,7(5):31-34. |
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| 作者姓名： | 周守勇 薛爱莲 张艳 王红艳 赵宜江 |
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| 作者单位： | 淮阴师范学院化学系,淮安,223001 |
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| 基金项目： | 江苏省高校自然科学基金
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淮阴师范学院校科研和教改项目 |
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| 摘 要： | 研究了不同浓度磷酸改性凹凸棒粘土的比表面积、孔结构性质以及其对水中Pb(Ⅱ)的吸附.结果表明,凹凸棒粘土磷酸改性后比表面积明显增大,具有明显的中孔分布;9 mol/L磷酸改性处理的凹凸棒粘土吸附能力最佳,在改性凹凸棒粘土加入量为20～30 g/L,水样pH=5条件下,废水中Pb(Ⅱ)的被吸附率接近99%.
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| 关 键 词： | 凹凸棒粘土 改性 含铅废水 吸附 |
| 文章编号： | 1008-9241(2006)05-0031-04 |
| 修稿时间： | 2005年2月8日 |
Study on adsorption of Pb2+ in solution with phosphoric acid modified attapulgite |
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| Zhou Shouyong,Xue Ailian,Zhang Yan,Wang Hongyan,Zhao Yijiang.Study on adsorption of Pb2+ in solution with phosphoric acid modified attapulgite[J].Techniques and Equipment for Environmental Pollution Control,2006,7(5):31-34. |
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| Authors: | Zhou Shouyong Xue Ailian Zhang Yan Wang Hongyan Zhao Yijiang |
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| Abstract: | The pore structures and surface area of the H_3PO_4 modified attapulgite were investigated by nitrogenad sorption.Furthermore,adsorption of Pb~(2+) on activated attapulgite was systematically studied.The results showed that the H_3PO_4 modified attapulgite had obvious meso-porous distribution and larger surface area.The optimal absorption condition was the attapulgite treated in 9 mol/L H_3PO_4.The modified attapulgite used in Pb-containing wastewater treatment was with nearly 99% of absoption rate.The optimal technological conditions were 20~30 g/L attapulgite addition,sample pH=5,with 20 min contacting. |
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| Keywords: | attapulgite modification Pb-containing wastewater adsorption |
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