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巯基树脂的合成及对Hg2+的吸附特征

张青梅 向仁军 成应向

张青梅, 向仁军, 成应向. 巯基树脂的合成及对Hg2+的吸附特征[J]. 环境科学研究, 2010, 23(7): 888-891.
引用本文: 张青梅, 向仁军, 成应向. 巯基树脂的合成及对Hg2+的吸附特征[J]. 环境科学研究, 2010, 23(7): 888-891.
ZHANG Qing-mei, XIANG Ren-jun, CHENG Ying-xiang. Synthesis of Thiol Resin and Its Adsorption Properties for Hg[STHZ]2+ [STBZ][J]. Research of Environmental Sciences, 2010, 23(7): 888-891.
Citation: ZHANG Qing-mei, XIANG Ren-jun, CHENG Ying-xiang. Synthesis of Thiol Resin and Its Adsorption Properties for Hg[STHZ]2+ [STBZ][J]. Research of Environmental Sciences, 2010, 23(7): 888-891.

巯基树脂的合成及对Hg2+的吸附特征

基金项目: 国家水体污染控制与治理科技重大专项(2009ZX07212-001-07)

Synthesis of Thiol Resin and Its Adsorption Properties for Hg[STHZ]2+ [STBZ]

  • 摘要: 使用聚苯乙烯交联微球为前驱体,经一系列反应合成了一种苯环上含巯基的离子交换树脂(巯基树脂),研究了其对水中Hg2+的吸附特征. 巯基树脂的红外与元素分析结果表明,巯基官能团成功地嫁接到树脂表面,树脂中b(巯基)为2.89 mmol/g. pH对吸附的影响较大,当pH为1时,巯基树脂对Hg2+的吸附量很低,因此,可以用酸洗树脂使其再生. 当pH为2~7时,巯基树脂对Hg2+的吸附量相差不大. 巯基树脂对水中Hg2+的吸附等温线结果表明,温度的升高有利于吸附,吸附量高达14.500 mg/g,且符合Langmuir模型. Hg2+在巯基树脂上的吸附符合准二级动力学方程,对于初始ρ(Hg2+)为1 mg/L的溶液,吸附后最终ρ(Hg2+)可降到0.003 mg/L.

     

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出版历程
  • 收稿日期:  2010-01-20
  • 修回日期:  2010-03-11
  • 刊出日期:  2010-07-25

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