Electrospun Silica-based Nanofibrous Composite Membranes for Water Purification

Electrospun Silica-based Nanofibrous Composite Membranes for Water Purification
SiO2 nanofiber; core-shell; wtater purofication; filter
Issue Date
Proceeding of The 12th Asian Textile Conference
, 178-178
Research on the development of novel filtration technology for water treatment such as surface water, ground water, and removal of metal and organic contaminants from water has been a subject of interest for the past decade. Among the varying water purification technologies, the pressure driven membrane filtration process are among the most energy-efficient ones. Ceramic nanostructured membrane is also used to purify waste water in advanced countries and applied in many areas and related researches are increasing. The advantage of ceramic filter is thermal and chemical stability. However ceramic fibrous filter has fatal disadvantage of brittleness. In this study, in order to overcome disadvantage of ceramic membrane, the organic/ inorganic composite membrane was prepared. The composite membrane offer specific advantages for the preparation of artificial membranes with excellent separation performances, good thermal and chemical stability and adaptability to the harsh environments, as well as membrane forming ability. Generally Microfilter membrane was usually used to reject colloid particle, but virus was not rejected by microfilter because size of virus is smaller than pore size of Microfilter membrane. Therefore, the aim of this research is also to obtain the composite membrane which has high Flux and high rejection efficiency for particle in polluted solution. The composite membrane was prepared by electrospinning of silica sol–gel composite solution. And fabricated membrane can maintain its membrane form without any base of support. We confirmed the optimum condition of preparing electrospun silica based fibrous composite membrane composed of nanofibers with uniform diameter, high specific surface area and thermal stability. Furthermore, in order to improve filtration performance, pore size of membrane was controlled by thermal pressing and thickness effect. The filtration effi
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