【摘 要】
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Tight ceramic uitrafiltration membranes have been proven to exhibit good rejection performance for reactive dye wastewater at high temperatures because of their high thermal and chemical resistance.However,the application of ceramic membranes for the trea
【机 构】
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State Key Laboratory of Materials-Oriented Chemical Engineering,College of Chemical Engineering,Nanj
论文部分内容阅读
Tight ceramic uitrafiltration membranes have been proven to exhibit good rejection performance for reactive dye wastewater at high temperatures because of their high thermal and chemical resistance.However,the application of ceramic membranes for the treatment of cationic dye wastewater is chal-lenging because of their surface charge.In this study,a ceramic membrane is modified by grafting aminosilane (KH-551) to enhance the positive charge of the membrane surface.The rejection perfor-mance of the charged modified ceramic membrane toward the methylene blue solution is significantly improved.The modification substance is bonded to the ceramic membrane surface via covalent bonding,which imparts good thermal stability.The modified ceramic membrane exhibits stable separation perfor-mance toward the methylene blue solution.Overall,this study provides valuable guidance for the adjust-ment of the ceramic membrane surface charge for treating industrial cationic dye wastewater.
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