用户名: 密码: 验证码:
EDTA对纳滤铅铜混合离子的去除效能影响研究
详细信息    查看官网全文
摘要
以EDTA为络合剂,选取含有重金属铅铜混合离子的土壤酸性沥出液为研究对象,探索络合纳滤工艺对铅离子和铜离子的去除率和膜通量的强化效果,并研究了pH、EDTA浓度和操作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可以明显地增加纳滤膜对铅铜混合离子的截留率并提高其膜通量,优化得到了EDTA络合纳滤工艺去除铅铜混合离子的最佳操作条件.
Ethylenediaminetetraacetic acid(EDTA) was chosen as the complexing agent to study the enhanced effects of nanofiltration for the removal of lead and copper mixed ions from soil acidic leachate.The effects of pH,concentration of EDTA and applied pressure on ions rejection were examined in complexationnanofiltration,and simultaneously its process conditions were optimized by orthogonal experimental design.The results show that the lead and copper mixed ions rejection and the permeate flux increase obviously with the present of EDTA in nanofiltration process.In addition,this paper obtains the optimum operating conditions of complexationnanofiltration for removal of lead and copper mixed ions.
引文
[1]沈黎,孙勇,熊大民.含铅废水处理技术研究进展[J].南方金属,2010,172:10-16.
    [2]徐雨芳,张弘,曾庆龙.含铅废水处理技术研究进展[J].安徽农业科学,2014,42(9):2709-2711.
    [3]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.
    [4]张溪,周爱国,甘义群,等.金属矿山土壤重金属污染生物修复研究进展[J].环境科学与技术,2010,33(3):107-110.
    [5]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.
    [6]Griffiths R A.Soil-washing technology and practice[J].J Hazard Mater,1995,40:175-189.
    [7]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.
    [8]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.
    [9]Lau W J,Ismail A F,Goh P S,et al.Characterization methods of thin film composite nanofiltrationmembranes[J].Sep Purif Rev,2015,44:135-156.
    [10]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.
    [11]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.
    [12]Ortega L M,Lebrun R,Blais J F,et al.Treatment of an acidic leachate containing metal ions by nanofiltration membranes[J].Sep Purif Technol,2007,54:306-314.
    [13]Murthy Z V P,Choudhary A.Separation of cerium from feed solution by nanofiltration[J].Desalination,2011,279:428-432.
    [14]Chitry F,Pellet-Rostaing S,Guy A,et al.Separation of amcricium(Ⅲ)from lanthanidcs(Ⅲ)by nanofiltration-complexation in aqueous medium[J].J Radioanal Nuclear Chem,2002,251(1),155-157.
    [15]Balanya T,Labanda J,Llorens J,et al.Separation of metal ions and chelating agents by nanofiltration[J].J Membr Sci,2009,345:31-35.
    [16]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.
    [17]单征,宁莎莎,蒯琳萍.纳滤法去除中低放射性废水中钴离子的研究[J].水处理技术,2012,38(2):21-22.
    [18]Yizhak Marcus.Thermodynamics of solvation of ions Part 5-gibbs free energy of hydration at 298.15 K[J].J Chem Soc Faraday Trans,1991,87(18),2995-2999.
    [19]武汉大学.分析化学(上)[M].第5版.北京:高等教育出版社,2006.172-183.
    [20]Gherasim C V,Cuhorka J,Mikulasek P.Analysis of lead(Ⅱ)retention from single salt and binary aqueous solutions by a polyamide nanofiltration membrane:experimental results and modelling[J].J Membr Sci,2013,436:132-144.x

© 2004-2018 中国地质图书馆版权所有 京ICP备05064691号 京公网安备11010802017129号

地址:北京市海淀区学院路29号 邮编:100083

电话:办公室:(+86 10)66554848;文献借阅、咨询服务、科技查新:66554700