EDTA对纳滤镉的去除效能影响研究 |
作者:冷婧 白玲※ 常娟 |
单位: 江西农业大学 理学院,南昌 330045 |
关键词: 络合纳滤; EDTA;镉去除率;pH;膜通量 |
DOI号: |
分类号: TQ028.3;S156.99 |
出版年,卷(期):页码: 2016,36(4):134-138 |
摘要: |
以EDTA为络合剂,选取含有重金属镉的土壤酸性沥出液为研究对象,探索络合纳滤工艺对镉离子的去除率和膜通量的强化效果,并研究了pH、EDTA浓度和压力对络合纳滤过程的影响,同时采用正交实验设计对络合纳滤工艺的操作条件进行了优化。结果表明,EDTA可以明显地增强纳滤膜对镉离子的截留率和膜通量,并获得了络合纳滤工艺去除镉的最佳操作条件。 |
Ethylene diamine tetraacetic acid(EDTA) was chosen as the complexing agent to study the enhanced effects of nanofiltration for the removal of cadmium from soil acidic leachate. The effects of pH ,concentration of EDTA and applied pressure on cadmium ion rejection were examined in complexation nanofiltration, and simultaneously its process conditions were optimized by orthogonal experimental design. The results showed that the cadmium ions rejection and the permeate flux increased obviously with the present of EDTA in nanofiltration process. In addition, this paper obtained the best operating conditions of complexation nanofiltration. |
基金项目: |
江西省环境保护科研项目(JXHBKJ2013-4),江西省教育厅科技研究项目(GJJ14289),江西省普通本科高校中青年教师发展计划访问学者专项资金(赣教高函[2014]15号)。 |
作者简介: |
第一作者简介:冷婧(1989-),女,江西省修水县人,硕士,研究方向为废水处理和资源化;E-mail:13207091459@163.com。 ※为通讯作者, E-mail: lingbb716@163.com。 |
参考文献: |
[1]张剑如,叶金武,徐立宏.含镉废水处理研究进展[J].广东化工,2007,34(2):28-30. [2]黄益宗,郝晓伟,雷鸣,等.重金属污染土壤修复技术及其修复实践[J].农业环境科学学报,2013,32(3):409-417. [3]Griffiths R A . Soil-washing technology and practice[J]. Hazard. Mater , 1995, 40: 175-189. [4]可欣,李培军,张昀,等.利用乙二胺四乙酸淋洗修复重金属污染的土壤及其动力学[J].应用生态学报,2007,18(3):601-606. [5]雷鸣,田中干也,廖柏寒,等. EDTA及其回收溶液治理重金属污染土壤的研究[J].环境工程学报,2007,1(5):88-93. [6]Lau W J, Ismail A F, Goh P S, et al. Characterization Methods of Thin Film composite Nanofiltion Membranes[J]. Separation & Purification Reviews, 2015,44:135-156. [7]侯立安,刘晓芳.纳滤水处理应用研究现状与发展前景[J].膜科学与技术,2010,30(4)1-6. [8]王晓琳,涂丛慧,方彦彦,等.纳滤膜孔结构、荷电性质、分离机理及动电性质研究进展[J].膜科学与技术,2011,31(3):127-132. [9]M Ortega L , Lebrun R, Blais J-F, et al. Treatment of an acidic leachate containing metal ions by nanofiltration membranes[J]. Separation and Purification Technology, 2007,54: 306–314. [10]Murthy ZVP, Choudhary A . A. Separation of cerium from feed solution by nanofiltration[J]. Desa lination, 2011, 279: 428-432. [11]Chitry F, Pellet-Rostaing S, Guy A, et al. Separation of americium(III) from lanthanides(III) by nanofiltration-complexation in aqueous medium[J]. Journal of Radioanalytical and Nuclear chemistry, 2002, 251(1), 155–157 . [12]T Balanyà, J Labanda, J Llorens J. Separation of metal ions and chelating agents by nanofiltration [J]. Journal of Membrane Science , 2009,345: 31–35. [13]刘 硕,李振山,汪成运.酒石酸钾钠( PST) 对纳滤处理重金属废水的强化效果[J]. 环境工程报, 2014, 8(4):1290-1291. [14]Ballet G T , Gzara L, Hafiane A, et al. Transport coefficients and cadmium salt rejection in nanofiltration membrane[J]. Desalination,2004,167:369-376. |
服务与反馈: |
【文章下载】【加入收藏】 |
《膜科学与技术》编辑部 地址:北京市朝阳区北三环东路19号蓝星大厦 邮政编码:100029 电话:010-64426130/64433466 传真:010-80485372邮箱:mkxyjs@163.com
京公网安备11011302000819号