Study on ce-doped nonstoichiometric nano-silica/PSF composite membrane for separation of Chinese yam polysaccharide

Zhang, Yuqing, Cui, Ping, Du, Tingdong and Fan, Youhu (2009) Study on ce-doped nonstoichiometric nano-silica/PSF composite membrane for separation of Chinese yam polysaccharide. Separation Science and Technology, 44 9: 1991-2003. doi:10.1080/01496390902880537


Author Zhang, Yuqing
Cui, Ping
Du, Tingdong
Fan, Youhu
Title Study on ce-doped nonstoichiometric nano-silica/PSF composite membrane for separation of Chinese yam polysaccharide
Journal name Separation Science and Technology   Check publisher's open access policy
ISSN 0149-6395
1520-5754
Publication date 2009-01-01
Year available 2009
Sub-type Article (original research)
DOI 10.1080/01496390902880537
Open Access Status Not Open Access
Volume 44
Issue 9
Start page 1991
End page 2003
Total pages 13
Place of publication Philadelphia, PA United States
Publisher Taylor and Francis Inc.
Language eng
Subject 1600 Chemistry
1508 Process Chemistry and Technology
1500 Chemical Engineering
1506 Tourism
Abstract In order to enhance the anti-fouling ability and separation efficiency of polysulfone (PSF) membrane during separating of Chinese yam polysaccharides, a novel composite membrane was prepared through a sol-gel process after adding Ce-doped nonstoichiometric nano-silica with higher activity and hydrophilic property to the porous matrix of PSF. Ce-doped nonstoichiometric nano-silica was synthesized by doping the rare earth Ce element. Novel composite membranes and ordinary membranes without doping Ce-doped nonstoichiometric nanosilica were used to separate Chinese yam polysaccharides while the content of polysaccharide was tested. The results designate that the content of polysaccharide separated by composite membrane which reached 78.3% was higher than that of polysaccharide separated by ordinary membrane which reached 46.7%. The flux of the composite membrane increased with increasing of operation pressure. With the temperature rising, the polysaccharide solution flux of composite membrane ascended from 289 L/(m2h) to 312 L/(m2h). The flux of the composite membrane was kept at a high value for 25 h before reaching a steady state (243 L/(m2h)), which was higher than the stable flux of ordinary membrane (160 L/(m2h)). After the composite membrane was washed for six times, its flux still reached 90% of initial value. The experiment data indicate that the anti-fouling ability and hydrophilic property of composite membrane were significantly enhanced. Therefore, Chinese yam polysaccharides can be efficiently separated by the novel composite membrane.
Keyword Ce doped nonstoichiometric nano silica
Chinese yam
Composite membrane
Polysaccharide
Polysulfone
Rare earth element
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collection: School of Engineering Publications
 
Versions
Version Filter Type
Citation counts: TR Web of Science Citation Count  Cited 1 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 1 times in Scopus Article | Citations
Google Scholar Search Google Scholar
Created: Wed, 27 Nov 2013, 18:07:24 EST by System User on behalf of School of Engineering