Performance of Layer-By-Layer (LbL) Polyelectrolyte Forward Osmosis Membrane for Humic Acid Removal and Reverse Solute Diffusion

Chemical Engineering Research Bulletin Pub Date : 2017-09-10 DOI:10.3329/CERB.V19I0.33799

S. Husaini, M. H. A. Seman

{"title":"Performance of Layer-By-Layer (LbL) Polyelectrolyte Forward Osmosis Membrane for Humic Acid Removal and Reverse Solute Diffusion","authors":"S. Husaini, M. H. A. Seman","doi":"10.3329/CERB.V19I0.33799","DOIUrl":null,"url":null,"abstract":"Recent study claimed that forward osmosis (FO) process could handle the fouling problem due it driven force based on natural osmotic pressure. However, researchers observed that FO membrane had problem with reverse solute diffusion (RSD) of draw solution. Therefore, FO membrane properties must be improved either physically or chemically in order to overcome this problem. Among all, surface modification approach has been acknowledged as a best technique to alter the membrane properties without significantly change the bulk membrane properties. In this study, polyelectrolyte FO membrane has been produced through Layer by Layer (LbL) deposition method by using Poly (diallyl-dimethylammoniumchloride), PDADMAC and Poly (sodium 4-styrene-sulfonate), PSS as an active monomers. Humic acid (HA) as part of Natural Organic Matter constituents was used as the feed solution and NaCl as a draw solution. The chemical structure and morphology of the FO membrane were characterized by FTIR and FESEM, respectively. From this study, the highest water flux and humic acid rejection were achieved at 2.5M of draw solution with value of 2.56 L/m ² .h and 99%, respectively. In general, the water flux increases as the concentration of draw solutions were increased. However, it was observed that reverse salt diffusion (RSD) become worse at higher concentration of draw solution. Chemical Engineering Research Bulletin 19(2017) 75-79","PeriodicalId":9756,"journal":{"name":"Chemical Engineering Research Bulletin","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2017-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"3","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Chemical Engineering Research Bulletin","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.3329/CERB.V19I0.33799","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}

引用次数: 3

Abstract

Recent study claimed that forward osmosis (FO) process could handle the fouling problem due it driven force based on natural osmotic pressure. However, researchers observed that FO membrane had problem with reverse solute diffusion (RSD) of draw solution. Therefore, FO membrane properties must be improved either physically or chemically in order to overcome this problem. Among all, surface modification approach has been acknowledged as a best technique to alter the membrane properties without significantly change the bulk membrane properties. In this study, polyelectrolyte FO membrane has been produced through Layer by Layer (LbL) deposition method by using Poly (diallyl-dimethylammoniumchloride), PDADMAC and Poly (sodium 4-styrene-sulfonate), PSS as an active monomers. Humic acid (HA) as part of Natural Organic Matter constituents was used as the feed solution and NaCl as a draw solution. The chemical structure and morphology of the FO membrane were characterized by FTIR and FESEM, respectively. From this study, the highest water flux and humic acid rejection were achieved at 2.5M of draw solution with value of 2.56 L/m ² .h and 99%, respectively. In general, the water flux increases as the concentration of draw solutions were increased. However, it was observed that reverse salt diffusion (RSD) become worse at higher concentration of draw solution. Chemical Engineering Research Bulletin 19(2017) 75-79

查看原文本刊更多论文

多层(LbL)聚电解质正向渗透膜去除腐植酸和反溶质扩散的性能

近年来的研究表明，正渗透是一种以自然渗透压为驱动力的工艺，可以有效地解决污水污染问题。然而，研究人员发现，FO膜在拉伸溶液的反溶质扩散(RSD)方面存在问题。因此，为了克服这一问题，必须从物理或化学上改进FO膜的性能。其中，表面改性方法被认为是在不显著改变膜体性能的情况下改变膜性能的最佳技术。本研究以聚(二烯丙基二甲基氯化铵)、PDADMAC和聚(4-苯乙烯磺酸钠)、PSS为活性单体，通过层层沉积法制备聚电解质FO膜。以天然有机质组分腐植酸(HA)为进料液，NaCl为提取液。用FTIR和FESEM分别表征了FO膜的化学结构和形貌。实验结果表明，在提取液深度2.5M处，水通量和腐植酸截留率最高，分别为2.56 L/m².h和99%。一般情况下，水通量随着溶液浓度的增加而增加。然而，随着萃取液浓度的增加，盐的反向扩散(RSD)变得越来越差。化工研究通报19(2017)75-79

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Chemical Engineering Research Bulletin

自引率

0.00%

发文量

文献相关原料

公司名称	产品信息	采购帮参考价格