Cellulose Acetate Nanofiltration Membranes for Cadmium Remediation

Q2 Materials Science

Journal of Membrane Science and Research Pub Date : 2020-04-01 DOI:10.22079/JMSR.2020.120669.1336

A. Figoli, C. Ursino, S. Santoro, I. Ounifi, Jalila Chekir, A. Hafiane, E. Ferjani

引用次数: 17

Abstract

In this work, cellulose acetate (CA) nanofiltration (NF) membranes were prepared via non-solvent phase inversion technique (NIPS). Polymer concentration was varied from 22 to 25 wt% in order to study its effect on the membrane properties. The fabricated membranes were characterized in terms of morphological analysis using scanning electron microscopy (SEM), contact angle, water content, water permeability and salts retention such as Na2SO4, CaCl2 and NaCl. Membranes performances were evaluated for cadmium Cd2+ removal using three types of cadmium salt: CdCl2, Cd(NO3)2 and CdSO4. The effects of several operating parameters such as the pH of the feed solution (2-12), trans-membrane pressure (0-14 bar), feed concentration (10-4-10-2 mol.L-1) and ionic strength were also studied and investigated. Results evidenced that the prepared CA-NF membranes consists of a sustainable remediation of Cadmium contamination for safe water supply.

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醋酸纤维素纳滤膜用于镉的修复

本工作采用非溶剂相转化技术（NIPS）制备了醋酸纤维素（CA）纳滤膜。聚合物浓度在22-25wt%之间变化，以研究其对膜性能的影响。使用扫描电子显微镜（SEM）、接触角、含水量、透水性和盐保留率（如Na2SO4、CaCl2和NaCl）对所制备的膜进行形态分析表征。使用三种类型的镉盐：CdCl2、Cd（NO3）2和CdSO4对膜去除Cd2+的性能进行了评估。还研究和研究了几种操作参数的影响，如进料溶液的pH（2-12）、跨膜压力（0-14巴）、进料浓度（10-4-10-2摩尔L-1）和离子强度。结果表明，所制备的CA-NF膜具有可持续的镉污染修复功能，可用于安全供水。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Membrane Science and Research Materials Science-Materials Science (miscellaneous)

CiteScore

4.00

自引率

0.00%

发文量

审稿时长

8 weeks

期刊介绍： The Journal of Membrane Science and Research (JMSR) is an Open Access journal with Free of Charge publication policy, which provides a focal point for academic and industrial chemical and polymer engineers, chemists, materials scientists, and membranologists working on both membranes and membrane processes, particularly for four major sectors, including Energy, Water, Environment and Food. The journal publishes original research and reviews on membranes (organic, inorganic, liquid and etc.) and membrane processes (MF, UF, NF, RO, ED, Dialysis, MD, PV, CDI, FO, GP, VP and etc.), membrane formation/structure/performance, fouling, module/process design, and processes/applications in various areas. Primary emphasis is on structure, function, and performance of essentially non-biological membranes.