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通过纳滤和反渗透膜去除模拟水和汽车减震器工厂废水中的六价铬

Hexavalent Chromium Removal from Model Water and Car Shock Absorber Factory Effluent by Nanofiltration and Reverse Osmosis Membrane.

作者信息

Mnif Amine, Bejaoui Imen, Mouelhi Meral, Hamrouni Béchir

机构信息

Desalination and Water Treatment Research Unit, Faculty of Sciences of Tunis, University of Tunis El Manar, El Manar II, 2092 Tunis, Tunisia.

出版信息

Int J Anal Chem. 2017;2017:7415708. doi: 10.1155/2017/7415708. Epub 2017 Jul 27.

DOI:10.1155/2017/7415708
PMID:28819360
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC5551522/
Abstract

Nanofiltration and reverse osmosis are investigated as a possible alternative to the conventional methods of Cr(VI) removal from model water and industrial effluent. The influences of feed concentration, water recovery, pH, and the coexisting anions were studied. The results have shown that retention rates of hexavalent chromium can reach 99.7% using nanofiltration membrane (NF-HL) and vary from 85 to 99.9% using reverse osmosis membrane (RO-SG) depending upon the composition of the solution and operating conditions. This work was also extended to investigate the separation of Cr(VI) from car shock absorber factory effluent. The use of these membranes is very promising for Cr(VI) water treatment and desalting industry effluent. Spiegler-Kedem model was applied to experimental results in the aim to determine phenomenological parameters, the reflection coefficient of the membrane (), and the solute permeability coefficient ( ). The convective and diffusive parts of the mass transfer were quantified with predominance of the diffusive contribution.

摘要

研究了纳滤和反渗透作为从模拟水和工业废水中去除六价铬的传统方法的一种可能替代方案。研究了进料浓度、水回收率、pH值和共存阴离子的影响。结果表明，使用纳滤膜（NF-HL）时，六价铬的截留率可达99.7%，使用反渗透膜（RO-SG）时，截留率在85%至99.9%之间，具体取决于溶液组成和操作条件。这项工作还扩展到研究从汽车减震器工厂废水中分离六价铬。这些膜在六价铬水处理和工业废水脱盐方面非常有前景。将Spiegler-Kedem模型应用于实验结果，以确定现象学参数、膜的反射系数（）和溶质渗透系数（）。传质的对流和扩散部分得到了量化，其中扩散贡献占主导。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1052/5551522/351c79a1cee6/IJAC2017-7415708.009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1052/5551522/33092db7abda/IJAC2017-7415708.001.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1052/5551522/87f4945ec4d3/IJAC2017-7415708.004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1052/5551522/d9704e03d823/IJAC2017-7415708.005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1052/5551522/ab52366155a7/IJAC2017-7415708.006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1052/5551522/75aeb66b95b4/IJAC2017-7415708.007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1052/5551522/008c3960d45b/IJAC2017-7415708.008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1052/5551522/351c79a1cee6/IJAC2017-7415708.009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1052/5551522/33092db7abda/IJAC2017-7415708.001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1052/5551522/b1b89fd4182f/IJAC2017-7415708.002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1052/5551522/f89b8a6470e3/IJAC2017-7415708.003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1052/5551522/87f4945ec4d3/IJAC2017-7415708.004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1052/5551522/d9704e03d823/IJAC2017-7415708.005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1052/5551522/ab52366155a7/IJAC2017-7415708.006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1052/5551522/75aeb66b95b4/IJAC2017-7415708.007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1052/5551522/008c3960d45b/IJAC2017-7415708.008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1052/5551522/351c79a1cee6/IJAC2017-7415708.009.jpg

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