Hydrophilization of Polyurethane Foam Carriers in MBBR with Hyperbranched Polymeric Diazonium Salts  

作　　者：LI Shang WANG Jilei TUO Xinlin HE Yaning 

机构地区：[1]Key Laboratory of Advanced Materials, Ministry of Education, Department of Chemical Engineering, Tsinghua University, Beijing 100084, P. R. China

出　　处：《Chemical Research in Chinese Universities》2018年第5期844-848,共5页高等学校化学研究（英文版）

基　　金：Supported by the National Natural Science Foundation of China（Nos.21474056, 21674058）.

摘　　要：In recent years, there has been a considerable research interest in moving-bed biofilm reactor（MBBR） for its efficiency and stability. This work proposes a new way to modify the hydrophilicity of polyurethane foam（PU） carriers via the layer-by-layer self-assembly of hyperbranched polymeric diazonium salt（M-HB-DAS） and poly（sodium-p-styrenesulfonate）（PSS）. Modified carriers showed very good adsorption for microbes according to the results of scanning electron microscope（SEM）. Biochemical experiments on wastewater treatment confirm that the modified PU carriers can improve the removal rate of chemical oxygen demand（COD）.In recent years, there has been a considerable research interest in moving-bed biofilm reactor（MBBR） for its efficiency and stability. This work proposes a new way to modify the hydrophilicity of polyurethane foam（PU） carriers via the layer-by-layer self-assembly of hyperbranched polymeric diazonium salt（M-HB-DAS） and poly（sodium-p-styrenesulfonate）（PSS）. Modified carriers showed very good adsorption for microbes according to the results of scanning electron microscope（SEM）. Biochemical experiments on wastewater treatment confirm that the modified PU carriers can improve the removal rate of chemical oxygen demand（COD）.

关 键 词：HYPERBRANCHED Diazonium salt Layer-by-layer self-assembly HYDROPHILIZATION Azo polymer 

分 类 号：TQ328.3[化学工程—合成树脂塑料工业] TP242.2[自动化与计算机技术—检测技术与自动化装置]