Preparation, Characterization and Properties of New Low Cost Multi-channel Ceramic Membrane Tube for Water Treatment
Multi-channel tubular macroporous ceramic membrane supports were successfully prepared via a plastic extrusion method,using α-Al2O3 with a purity of 94wt% and aluminum hydroxide as starting materials,the ash of burned rice hull as the pore-forming agent and a small amount of talc and kaolin as sintering aids.The effects of the kinds of sintering aids,content of aluminum hydroxide and ash of burned rice hull on the porosity,pore size and distribution,compressive strength,acid and alkali corrosion resistance and permeability of the new multi-channel ceramic membrane supports were investigated.The results showed that aluminum hydroxide effectively improved the mechanical strength,and the support sintered at 1450℃ for 4h with the aluminum hydroxide content of 20wt% exhibited higher performance: average pore size diameter and porosity were nearly 5μm and 50% respectively,the compressive strength was around 7MPa,the pure water flux was 26m3/m2h at 0.1MPa and changed to nearly 20m3/m2h after the acid and alkali treatment at 90℃ for 48h.The support possesses excellent corrosion resistance and can be used in the water treatment process with large range of pH value.
Tubular ceramic membranes supports Multi-channel α-Al2O3 Water treatment
Ruiping Liu Changan Wang Yongbin Wang
State Key Lab of New Ceramics and Fine Processing, Department of Materials Science and Engineering, Henan Fangzhou Ceramics Co.Ltd, Hebi 458000, China
国际会议
the Chinese Materials Congress 2012(2012年中国材料大会(CMC2012))
太原
英文
629-635
2012-07-13（万方平台首次上网日期，不代表论文的发表时间）