不同分子质量的腐殖酸对溴离子在MIEX树脂上吸附行为的影响

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丁磊^1,2*，高阳¹，贾韫翰¹，钟梅英^1,2

1. 安徽工业大学建筑工程学院，安徽马鞍山 2430322. 生物膜法水质净化及利用技术教育部工程研究中心，安徽马鞍山 243032

收稿日期:2018-03-23修回日期:2018-07-12出版日期:2018-12-22发布日期:2018-12-19
通讯作者:丁磊

基金资助:国家自然科学基金资助;安徽省高校优秀拔尖人才培育资助项目;安徽工业大学研究生创新研究基金资助项目

Effects of humic acids with different molecular weights on the adsorption behavior of bromide on MIEX resin

Lei DING^1,2*, Yang GAO¹, Yunhan JIA¹, Meiying ZHONG^1,2

1. School of Civil Engineering and Architecture, Auhui University of Technology, Ma?anshan, Anhui 243032, China2. Engineering Research Center of Biomembrane Water Purification and Utilization Technology, Ministry of Education, Ma?anshan, Anhui 243032, China

Received:2018-03-23Revised:2018-07-12Online:2018-12-22Published:2018-12-19

摘要/Abstract

摘要： 采用静态吸附法研究了不同分子量的腐殖酸对溴离子(Br?)在MIEX树脂上吸附行为的影响. 结果表明，pH为中性时，4种腐殖酸(分子量分别为小于1000, 1000?5000, 5000?10000, 大于10000)使MIEX树脂对Br?的去除率从80.05%分别降至75.39%, 26.32%, 42.67%和49.03%，而酸性(pH<5.0)或碱性(pH>9.0)时，各种腐殖酸则会促进Br?去除，pH为11.0时去除效率增加最明显. 分子量大于10000的腐殖酸可将吸附平衡时间由60 min缩短至20 min，分子质量1000?5000和5000?10000的腐殖酸可将吸附平衡时间缩短至40 min. 但不论有无腐殖酸，MIEX树脂对Br?的吸附过程均符合拟二级反应动力学模型. 不同分子量的腐殖酸均能明显降低Br?在MIEX树脂上的吸附平衡容量，分子量大于10000的腐殖酸影响最大，但均不改变吸附平衡模型类型，吸附平衡规律用Langmuir与Freundlich模型均可很好描述. 不同分子量的腐殖酸对MIEX树脂去除Br?的影响与溶液pH值密切相关，腐殖酸会加速Br?在树脂上的吸附过程，但不改变吸附平衡及动力学模型类型.

引用本文

丁磊高阳贾韫翰钟梅英. 不同分子质量的腐殖酸对溴离子在MIEX树脂上吸附行为的影响[J]. 过程工程学报, 2018, 18(6): 1332-1339.
Lei DING Yang GAO Yunhan JIA Meiying ZHONG. Effects of humic acids with different molecular weights on the adsorption behavior of bromide on MIEX resin[J]. Chin. J. Process Eng., 2018, 18(6): 1332-1339.

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