Journal ArticleDOI
Permeation and Separation Characteristics of Supported Alumina and Titania Membranes
Radharani Das,Binay K. Dutta +1 more
Reads0
Chats0
TLDR
In this paper, the preparation, characterization, water permeability, and filtration characteristics of α-alumina and titania membranes on alumina and on clay supports are described.Abstract:
Preparation, characterization, water permeability, and filtration characteristics of alumina and titania membranes on alumina and on clay supports are described. Commercial α-alumina and Gangetic silt have been used for the preparation of support disks. The effects of temperature and time of sintering on porosity and pore size distribution of the supports have been studied. A higher firing temperature reduces the porosity but increases the average pore diameter. The sol–gel technique has been used to prepare supported membranes of alumina and titania. Stability of the sols prepared was noted, and some of the sols were found to remain stable for about a year. Coating and firing cycles had to be repeated in order to get good membranes. However, SEM pictures show that cracks developed in membranes if more than five coatings were applied. The membranes had good water permeabilities. The rejection performances of the membranes were studied using bovine serum albumin of 66,000 dalton molecular weight. The depen...read more
Citations
More filters
Journal ArticleDOI
Treatment of Oily Waste Water Using Low-Cost Ceramic Membrane: Flux Decline Mechanism and Economic Feasibility
TL;DR: In this article, the applicability of different membrane pore blocking models for the prediction of flux decline mechanisms during dead end microfiltration of stable oil-in-water (o/w) emulsions using relatively low-cost ceramic membranes was addressed.
Journal ArticleDOI
Demulsification of water/sunflower oil emulsions by a tangential filtration process using chemically impregnated ceramic tubes
TL;DR: In this paper, a tangential filtration process was implemented using porous ceramic tubes made of α-alumina produced by the slip-casting technique, which revealed a mean pore size of 0.5μm.
Book
Development of a Ceramic Membrane Filtration Equipment and Its Applicability for Different Wastewaters
TL;DR: In this article, the authors developed a membrane filtration equipment for plate type ceramic membranes based on the results achieved with different kinds of wastewaters, mainly made with pulp and board mill wastewater, but some experiments were also made with a bore well water and a stone cutting mine wastewater.
Journal ArticleDOI
Chemical synthesis of titania (TiO2) powder via mixed precursor route for membrane applications
Avinash J. Patil,M. H. Shinde,Hari S. Potdar,S.B. Deshpande,Sudhakar R. Sainkar,S. Mayadevi,S. K. Date +6 more
TL;DR: In this article, a controlled chemical reaction between titanium tetrabutoxide and oxalic acid at room temperature in non-aqueous medium was utilized to obtain a mixed precursor with composition.
Journal ArticleDOI
Kieselguhr–Mullite ceramic membrane substrate fabricated by line compounding technique
Chuan-Feng Li,Shun-He Zhong +1 more
TL;DR: In this paper, a new type of Kieselguhr-Mullite (K-M) ceramic membrane substrate was fabricated by line compounding technique, where skeleton pores of Kiegguhr particles as the passage and dense Mullite as the linking substance.
References
More filters
BookDOI
Inorganic membranes : synthesis, characteristics, and applications
TL;DR: The developing use of inorganic membranes: a historical perspective is given in this paper, where the authors present the characteristics of the inorganic membrane in liquid phase applications, operating considerations and some aspects of system design.
Journal ArticleDOI
Formation and characterization of supported microporous ceramic membranes prepared by sol-gel modification techniques
TL;DR: In this paper, the formation of supported microporous membranes (by IUPAC definition rpore < 1 nm), prepared by modification of mesoporous γ-alumina membranes with polymeric sols, is described.
Journal ArticleDOI
Transport properties of alkanes through ceramic thin zeolite MFI membranes
TL;DR: In this paper, the authors show that strongly and weakly adsorbing gases and a high loadings of the strongly adaption molecule in the zeolite poze are suppressed by the sorption and the mobility of strongly adsorbs, resulting in pore blocking effects.
Journal ArticleDOI
The preparation and characterization of alumina membranes with ultrafine pores: 2. The formation of supported membranes
A.F.M. Leenaars,A.J. Burggraaf +1 more
TL;DR: In this article, a capillary pressure drop is created by bringing a microporous ceramic support into contact with a boehmite (γ-A1OOH) sol, which forces the dispersion medium of the sol to flow into the dry part of the support.
Journal ArticleDOI
Experimental studies on pore size change of porous ceramic membranes after modification
Y.S. Lin,Anthonie Burggraaf +1 more
TL;DR: The experimental and theoretical results suggest that, in order to reduce effectively the average pore size of a membrane by a modification process, the membrane should have a rather uniform pore sizes distribution, or the modification process should be conducted under conditions which give a pore narrowing rate proportional to the poresize.