Tight Ultrafiltration Ceramic Membrane for Separation of Dyes and Mixed Salts (both NaCl/Na2SO4) in Textile Wastewater Treatment
Tight Ultrafiltration Ceramic Membrane for Separation of Dyes and Mixed Salts (both NaCl/Na2SO4) in Textile Wastewater Treatment
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DOI：
10.1021/acs.iecr.7b01440
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发表时间：
2017-06-21
影响因子：
4.2
通讯作者：
Xing, Weihong
中科院分区：
文献类型：
--
作者：
Ma, Xiao;Chen, Pengli;Xing, Weihong
商业纳滤膜（NF）已经在工业中用于分离染料和盐;然而，NF膜对二价盐（即，Na 2SO 4）导致盐回收率降低。本研究采用紧密超滤（t-UF）陶瓷膜（MWCO 8800 Da）处理印染废水中的染料和混合盐（NaCl/Na 2SO 4）。比较了t-UF陶瓷膜和DK聚合物膜（来自GE）在渗透性、活性染料保留和盐渗透方面的性能。t-UF陶瓷膜表现出更好的渗透性，对染料分子的竞争截留率（>98%），对NaCl的截留率降低（
Commercial nanofiltration (NF) membranes have been used to separate dyes and salts in industry; however, NF membrane's high rejection to divalent salts (i.e., Na2SO4) leads to a reduction of salt recovery. In this study, a tight ultrafiltration (t-UF) ceramic membrane (MWCO 8800 Da) is proposed to fractionate dyes and mixed salts (NaCl/Na2SO4) for textile wastewater treatment. Performance of the t-UF ceramic membrane and DK polymeric membrane (from GE) has been compared regarding to permeability, retention of reactive dyes, and permeation of salts. The t-UF ceramic membrane presents better permeability, competitive rejection of dye molecules (>98%), and reduced rejection of NaC1 (