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›› 2009, Vol. 9 ›› Issue (3): 486-491.

• 反应与分离 • 上一篇    下一篇

石棉尾矿酸浸渣对铜离子的吸附性能

陈俊涛 郑水林 檀竹红 郑黎明 郑黎明   

  1. 黑龙江科技学院资源与环境工程学院 中国矿业大学(北京)化学与环境工程学院 安徽省淮南市环保局 中国矿业大学(北京)化学与环境工程学院
  • 收稿日期:2008-12-23 修回日期:2009-03-10 出版日期:2009-06-20 发布日期:2009-06-20
  • 通讯作者: 郑水林

Adsorption of Copper Ion by Calcined Acid Leaching Residue of Asbestos Tailing

CHEN Jun-tao ZHENG Shui-lin WANG Cai-li TAN Zhu-hong ZHENG Li-ming ZHENG Li-ming   

  1. School of Chemical and Environmental Engineering, China University of Mining and Technology School of Chemical and Environmental Engineering, China University of Mining and Technology Environment Bureau of Huainan Anhui Province School of Chemical and Environmental Engineering,China University of Mining and Technology
  • Received:2008-12-23 Revised:2009-03-10 Online:2009-06-20 Published:2009-06-20
  • Contact: ZHENG Shui-lin

摘要: 对石棉尾矿酸浸渣进行了焙烧处理,考察了焙烧后的石棉尾矿酸浸渣对溶液中Cu2+的吸附性能,测定了其表面x电位,对吸附Cu2+前后的石棉尾矿酸浸渣进行了表征,探讨了吸附机理. 结果表明,石棉尾矿酸浸渣的等电点为2.03;石棉尾矿酸浸渣用量3 g/L、吸附时间60 min、吸附温度25℃、溶液pH值4.85时,该渣对Cu2+的吸附效果最佳. 石棉尾矿酸浸渣对Cu2+的等温吸附符合Langmuir方程,为化学吸附,其吸附等温式为Ce/q=0.0749Ce+0.1076,主要为表面配位吸附和离子交换吸附.

关键词: 石棉尾矿酸浸渣, 焙烧, 吸附, Cu2+

Abstract: The acid leaching residue of asbestos tailing was pretreated by calcination, and the adsorption capability of calcined acid leaching residue of asbestos tailing to Cu2+ was studied. The x potential of acid leaching residue of asbestos tailing was mensurated, the unadsorbed and adsorbed Cu2+ acid leaching residues of asbestos tailing were characterized by SEM, TEM and FT-IR spectra, and the adsorption mechanism of acid leaching residue was discussed. The results showed that the isoelectric point of acid leaching residue of asbestos tailing was 2.03, the removal effect of Cu2+ was optimal when the quantity of adsorbent was 3 g/L, adsorption time 60 min, adsorption temperature 25℃, and pH value of solution 4.85. The model of isothermal adsorption accorded with Langmuir equation, which was chemical adsorption, the adsorption isotherm was Ce/q=0.0749Ce+0.1076. The adsorption mechanism of acid leaching residue to Cu2+ could be explained by both adsorption of surfacial coordination and ion exchange.

Key words: acid leaching residue of asbestos tailing, calcination, adsorption, Cu2+

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