酚醛树脂/活性炭基微孔炭膜制备及结构调控  

Fabrication and structure control of phenolic resin/activated carbon-based carbon membrane

作　　者：惠洪森 陈子尚 王崧鸿 熊鸽 王虹[1] 王同华[2] 李建新[1] HUI Hongsen;CHEN Zishang;WANG Songhong;XIONG Ge;WANG Hong;WANG Tonghua;LI Jianxin(State Key Laboratory of Separation Membranes and Membrane Processes,National Center for International Joint Research on Separation Membranes,Tianjin Polytechnic University,Tianjin 300387,China;School of Chemical Engineering,Dalian University of Technology,Dalian 116024,China)

机构地区：[1]天津工业大学分离膜与膜过程国家重点实验室,分离膜科学与技术国家级国际联合研究中心,材料科学与工程学院,天津300387 [2]大连理工大学化工学院,大连116024

出　　处：《膜科学与技术》2020年第1期131-138,共8页Membrane Science and Technology

基　　金：国家自然科学基金项目(21676200和21576208);长江学者和创新团队发展计划(IRT-17R80);天津市科技计划项目(18PTZWHZ00210)。

摘　　要：以酚醛树脂和活性炭为主要原料,甲基纤维素为黏结剂,聚乙烯醇缩丁醛(PVB)为造孔剂,采用压模成型及一步炭化法制备高比表面积酚醛树脂/活性炭炭基微孔炭膜(PRCM),通过调节原料配比及制备工艺参数等实现微孔炭膜结构的可控制备.结果表明,当酚醛树脂质量分数为45%,炭化温度1150℃,PVB添加质量分数20%时,酚醛树脂/活性炭微孔炭膜的抗折强度、电导率、孔隙率、纯水通量和比表面积分别为8.2 MPa、400.3μS/cm、44.2%、93 L/(m^2·h)和370.2 m^2/g.此外,采用溶胶-凝胶法将纳米TiO2负载微孔炭膜制备电催化膜电极(TiO2/CM).在相同配比和制备工艺条件下,对比煤基、煤沥青/活性炭以及酚醛树脂/活性炭三种原料所制备电催化炭膜的电化学和电催化降解苯酚性能.结果显示,TiO2/PRCM具有最优的电化学活性和催化降解效率.以其所构建的ECMR处理10 mmol苯酚废水时,COD和苯酚去除率分别可达86.5%和94.6%.这是因为PRCM具有较高的比表面积和石墨化程度,导致其具有较高的催化效率.酚醛树脂/活性炭炭基微孔炭膜在含酚废水过程中展现了良好的电化学和机械性能.Activated carbon and phenolic resin as precursor material,carboxymethyl cellulose as binder and polyvinyl butyral as pore forming agent were employed to fabricate phenolic resin based carbon membrane(PRCM)with high specific surface area.When phenolic resin content was 45%and carbonization temperature was 1150℃,the bending strength,conductivity,porosity,specific surface area and pure water flux of resultant PRCM were 8.2 MPa,400.3μS/cm,44.2%,370.2 m^2/g and 93 L/(m^2·h),respectively.Simultaneously,nano-TiO2 was loaded on PRCM to fabricate TiO2/PRCM catalytic membrane,which was used as anode to constitute FBECMR for 10.0 mmol/L phenolic wastewater treatment.The removal rates of phenol and COD obtained from TiO2/PRCM were up to 94.6%and 86.5%,respectively.The high efficiency and phenol removal obtained are ascribed to the high specific surface area and graphitization degree of PRCM.PRCM showed a good application in the treatment of phenolic wastewater.

关 键 词：酚醛树脂 活性炭 微孔炭膜 电催化膜反应器 苯酚废水处理 

分 类 号：TQ028.8[化学工程]