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首页> 外文期刊>Journal of Applied Polymer Science >Synergetic effects of organic and inorganic additives on improvement in hydrophilicity and performance of PVDF antifouling ultrafiltration membrane for removal of natural organic material from water
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Synergetic effects of organic and inorganic additives on improvement in hydrophilicity and performance of PVDF antifouling ultrafiltration membrane for removal of natural organic material from water

机译：有机和无机添加剂对PVDF防污超滤膜改善及性能的改善作用，用于除水中的天然有机材料

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Surrounding vegetation, animal, human and microbiological decomposition are the strong source of humic acid (HA) falling into the surface water bodies through rain runoff in the monsoon. HA contains various functional groups, such as carboxylic, phenolic, hydroxyl, and quinine, which are the major foulant. Contact of HA may have an adversarial health issue to human beings namely goiter, black foot, and cancer disease. The maximum permissible limit of HA in drinking water should be less than 2 ppm as per the Environmental Protection Agency (EPA). The membrane technology has prevailed a prominent place worldwide in chemical, water and wastewater treatment technologies. The proposed work is focused on the blending of organic-water soluble polymer polyethylene glycol 6000 as a pore-forming agent and inorganic salt lithium bromide (LiBr) as membrane morphology modifier with polyvinylidene fluoride host polymer in the N,N-Dimethylacetamide solvent. All fabricated membranes were characterized for functional groups and morphology. The total number of pores per unit surface area of membrane for membranes M-LiBr-0, M-LiBr-1, M-LiBr-2, and M-LiBr-3 are 2 x 10(13), 2.3 x 10(14), 2.7 x 10(14) and 2.82 x 10(14), respectively. The static water contact angle was decreased from 68.2 degrees to 50.6 degrees with an increase in the content of LiBr from 0 to 3 wt%. The order of pure water flux and hydraulic permeability of the membrane was M-LiBr-0 < M-LiBr-1 < M-LiBr-2 < M-LiBr-3. The HA rejection of the membrane was also increased from 90.13% to 96.24% with LiBr content due to a decrease in pore size of the membrane with the addition of LiBr content.
机译：周围的植被、动物、人类和微生物分解是腐殖酸（HA）在季风期通过降雨径流进入地表水体的主要来源。HA含有各种官能团，如羧基、酚基、羟基和奎宁，它们是主要的污染物。接触HA可能会对人类健康产生不利影响，即甲状腺肿、黑足和癌症。根据环境保护局（EPA）的规定，饮用水中HA的最大允许限值应小于2ppm。膜技术在世界范围内的化学、水和废水处理技术中占有重要地位。本文主要研究了在N，N-二甲基乙酰胺溶剂中，有机水溶性聚合物聚乙二醇6000作为成孔剂，无机盐溴化锂（LiBr）作为膜形态改进剂与聚偏氟乙烯主体聚合物的共混。对所有制备的膜的官能团和形态进行了表征。膜M-LiBr-0、M-LiBr-1、M-LiBr-2和M-LiBr-3每单位表面积的微孔总数分别为2 x 10（13）、2.3 x 10（14）、2.7 x 10（14）和2.82 x 10（14）。随着溴化锂含量从0%增加到3%，静态水接触角从68.2度降低到50.6度。膜的纯水通量和水力渗透性顺序为M-LiBr-0

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