PERFORMANCE OF CARBOXYMETHYL CELLULOSE/POLYSULPHONE MEMBRANES PREPARED VIA DIFFERENT IMMERSION METHODS FOR SALT RICH WATERS

IF 1.3 4区农林科学 Q2 MATERIALS SCIENCE, PAPER & WOOD

Cellulose Chemistry and Technology Pub Date : 2023-09-29 DOI:10.35812/cellulosechemtechnol.2023.57.80

HANANE ABURIDEH, ZAHIA TIGRINE, DJAMILA ZIOUI, SARRA HOUT, LAMINE AOUDJIT, MOHAMED ABBAS

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Abstract

cellulose (CMC)/polysulfone (PSf) by the crosslinking of glutaraldehyde (GA) or lactic acid (LA), using the non-solvent induced phase separation (NIPS) method. The effects of different parameters, such as the type and degree of crosslinking, the immersion method, and the coating procedure, including the thermal treatment have been studied. The prepared membranes were analyzed in terms of water absorption and flux, as well as their efficiency in retaining salt ions from synthetic waters rich in mono/divalent salts and real seawater samples. The optimized membrane containing 2% by weight of CMC and 2% of lactic acid as crosslinking agent, coagulated by immersion for 10 min, represented a rejection efficiency of 97.3%, 88.3% and 34% for the solutions of MgSO4, CaCO3 and NaCl, respectively. The optimal membrane recorded a pure water flux of 127.37 L/m²h, under a low transmembrane pressure of 10 bars, and permeability of 26 L/m² h bars. The membrane flux recovery rate was greater than 94%, indicating satisfactory resistance to fouling.

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不同浸渍方法制备的羧甲基纤维素/聚砜膜在富盐水体中的性能

通过戊二醛(GA)或乳酸(LA)交联制备纤维素(CMC)/聚砜(PSf)，采用非溶剂诱导相分离(NIPS)法。研究了交联类型、交联程度、浸渍方式、涂覆工艺及热处理等参数对复合材料性能的影响。对制备的膜的吸水性和通量进行了分析，并对富含一价/二价盐的合成水和真实海水样品中的盐离子进行了保留。优化后的膜对MgSO4、CaCO3和NaCl溶液的截留率分别为97.3%、88.3%和34%，交联剂CMC质量分数为2%，乳酸质量分数为2%。在10 bar的低跨膜压力下，最优膜的纯水通量为127.37 L/m²h，渗透率为26 L/m²h bar。膜通量回收率大于94%，具有良好的抗污染性能。

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来源期刊

Cellulose Chemistry and Technology 工程技术-材料科学：纸与木材

CiteScore

2.30

自引率

23.10%

发文量

审稿时长

7.3 months

期刊介绍： Cellulose Chemistry and Technology covers the study and exploitation of the industrial applications of carbohydrate polymers in areas such as food, textiles, paper, wood, adhesives, pharmaceuticals, oil field applications and industrial chemistry. Topics include: • studies of structure and properties • biological and industrial development • analytical methods • chemical and microbiological modifications • interactions with other materials