工业水处理 ›› 2013, Vol. 33 ›› Issue (7): 25-29.

• 试验研究 • 上一篇    下一篇

D301负载Fe(Ⅲ)去除饮用水中的As(Ⅴ)

徐伟1,2, 李长海2,3, 贾冬梅2,3, 刘学文3   

  1. 1. 长春工业大学化学工程学院, 吉林长春 130012;
    2. 滨州学院化工技术研究中心,山东滨州 256603;
    3. 滨州市液态污染物综合利用技术重点实验室, 山东滨州 256603
  • 修回日期:2013-03-22 出版日期:2013-07-20 发布日期:2013-07-25
  • 通讯作者: 李长海,E-mail:changhaili2000@163.com。 E-mail:changhaili2000@163.com。
  • 作者简介:徐伟(1985- ),硕士。电话:18266592916,E-mail:1094259069@qq.com。
  • 基金资助:

    国家自然科学基金(21276027);山东省自然科学基金(ZR2009BL001,ZR2010BL028);滨州市科学技术发展计划(200919,200924)

Removal of As(Ⅴ) from drinking water by D301-Fe(Ⅲ)

Xu Wei1,2, Li Changhai2,3, Jia Dongmei2,3, Liu Xuewen3   

  1. 1. School of Chemistry and Chemical Engineering, Changchun University of Technology, Changchun 130012, China;
    2. Chemical Technology Research Center, Binzhou University, Binzhou 256603, China;
    3. Key Laboratory of Comprehensive Utilization of Liquid Pollutants in Binzhou City, Binzhou 256603, China
  • Revised:2013-03-22 Online:2013-07-20 Published:2013-07-25

摘要:

研究了用Fe(Ⅲ)改性的大孔弱碱性阴离子交换树脂D301在不同实验条件下对饮用水中As(Ⅴ)的吸附性能,包括pH、温度、吸附时间和共存离子的影响。研究结果表明:在pH<10时,D301-Fe对As(Ⅴ)具有较强的吸附性能,吸附方程符合Langmuir等温线,吸附过程分为自发、放热、熵推动过程;D301-Fe对砷的吸附遵循二级动力学方程;当含As(Ⅴ)与SO4-2、Cl-、F-共存时,D301-Fe对砷仍具有较高的去除率,而与PO4-3共存时其对砷的去除率明显下降,基本低于40%。

关键词: 除砷, D301-Fe, 吸附剂, 共存离子

Abstract:

The effects of macroporous and alkalescent anion exchange resin D301 modified with Fe ( Ⅲ ) on the adsorpting capacity for As(Ⅴ) from drinking water,under experimental conditions,including pH,temperature,adsorpting time,and co-existence ions,have been studied.The results show that when its pH is less than 10,D301-Fe has stronger adsorpting capacity for As(Ⅴ).Its adsorption equation conforms to Langmuir isotherm. Its adsorption course consists of spontaneous,exothermic and entropy-driven processes.The adsorption of arsenic by D301-Fe follows second-order kinetics equation.The adsorpting capacity of D301-Fe for As (Ⅴ) is still very high in the presence of SO42-,Cl-and F-. But in the presence of PO43-,its As removing rate decreases obviously,basically lower than 40%.

Key words: arsenic removal, D301-Fe, adsorbent, co-existing ions

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