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

doi:10.1007/s40242-018-8025-1

Chemical Research in Chinese Universities ›› 2018, Vol. 34 ›› Issue (5): 844-848.doi: 10.1007/s40242-018-8025-1

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

LI Shang, WANG Jilei, TUO Xinlin, HE Yaning

Key Laboratory of Advanced Materials, Ministry of Education, Department of Chemical Engineering, Tsinghua University, Beijing 100084, P. R. China

Received:2018-01-19 Revised:2018-03-24 Online:2018-10-01 Published:2018-06-19
Contact: TUO Xinlin,Email:tuoxl@mail.tsinghua.edu.cn;HE Yaning,Email:heyaning@mail.tsinghua.edu.cn E-mail:tuoxl@mail.tsinghua.edu.cn;heyaning@mail.tsinghua.edu.cn
Supported by:
Supported by the National Natural Science Foundation of China(Nos.21474056, 21674058).

Abstract

Abstract: 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).

Key words: Hyperbranched, Diazonium salt, Layer-by-layer self-assembly, Hydrophilization, Azo polymer

LI Shang, WANG Jilei, TUO Xinlin, HE Yaning. Hydrophilization of Polyurethane Foam Carriers in MBBR with Hyperbranched Polymeric Diazonium Salts[J]. Chemical Research in Chinese Universities, 2018, 34(5): 844-848.

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

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