High acid resistant SiOC ceramic membranes for wastewater treatment

Tailoring the pore structures of ceramic membranes is the essential challenge in its application for wastewater treatment. In this paper, silicon oxycarbide (SiOC) ceramic membranes with tunable pore structures are fabricated by coating polysiloxanes (PSO) onto YSZ hollow fiber membranes followed wi...

Full description

Saved in:
Bibliographic Details
Published inCeramics international Vol. 44; no. 11; pp. 13444 - 13448
Main Authors Guo, Fangwei, Su, Dong, Liu, Yang, Wang, Jianming, Yan, Xiao, Chen, Jing, Chen, Shunquan
Format Journal Article
LanguageEnglish
Published Elsevier Ltd 01.08.2018
Subjects
A. films
B. Porosity
C. Corrosion
D. Glass ceramics
E. Membranes
A. films
D. Glass ceramics
B. Porosity
C. Corrosion
E. Membranes
Online AccessGet full text

Cover

More Information
Summary:Tailoring the pore structures of ceramic membranes is the essential challenge in its application for wastewater treatment. In this paper, silicon oxycarbide (SiOC) ceramic membranes with tunable pore structures are fabricated by coating polysiloxanes (PSO) onto YSZ hollow fiber membranes followed with subsequent pyrolysis. The SiOC ceramics, with a pore size in the range of 50 nm-2 µm and porosity of 35–40%, have been obtained by varying the pore forming agents. Moreover, the SiOC layers endow the fiber membranes with high corrosion resistance regarding merely 0.07 wt% weight loss in 20 wt% H2SO4 solution, since that the unique silicon oxycarbide microlattice structures can provide remarkable chemical durability. Together with considerable mechanical strength and pure water permeate flux, such SiOC ceramic membranes should find applications in industrial wastewater treatment.
ISSN:0272-8842
1873-3956
DOI:10.1016/j.ceramint.2018.04.149