Hollow fibre ceramic membranes

The third main class of separation methods, the use of micro-porous and non-porous membranes as semi-permeable barriers (see Figure 2c) is rapidly gaining popularity in industrial separation processes for application to difficult and highly selective separations. Membranes are usually fabricated from natural fibres, synthetic polymers, ceramics or metals, but they may also consist of liquid films. Solid membranes are fabricated into flat sheets, tubes, hollow fibres or spiral-wound sheets. For the micro-porous membranes, separation is effected by differing rates of diffusion through the pores, while for non-porous membranes, separation occurs because of differences in both the solubility in the membrane and the rate of diffusion through the membrane. Table 2 is a compilation of the more common industrial separation operations based on the use of a barrier. A more comprehensive table is given by Seader and Henley.1... 

Hollow fibre systems are availabe from Amicon Corp., or BioRad Laboratories based on the semipermeable membranes used in dialysis and concentration cells. Alternatively the Opticel system is based on 1 mm2 pores in a ceramic cartridge. 

In this work, two support shapes are of particular interest tubular and flat supports, which are currently the most used supports in membrane research. Apart from these shapes also ceramic multi-bore tubes and honeycomb structures are produced for membrane applications and recently a-alumina hollow fibre supports were developed as well [1],... 

The principle of ceramic matrix modules is the same as for hollow-fibre systems, with the exception that cells are not separated from the medium circulation by a membrane. Cells are held in the highly porous matrix and are supplied with... 

Three types of membranes have been applied so far for MTBE degrading reactors 1) A ceramic cross-flow ultraflltration membrane with a molecular cut-off of 300 kDaltons and pore size 0.02 im [40] 2) an internal hollow fibre membrane [62] and 3) a porous polyethylene, 0.48 cm thick membrane with pore size of 18-28 xm [42,52,63,64]. Interestingly, it was reported by the authors who used this latter polyethylene membrane mentioned that there was no need to apply a pressure across the membrane for operation in their reactor. 

Not only does the bulk chemical industry employ all of the membrane separation processes, but partly because of that, the sector gives home also to all of the various physical embodiments of membranes flat sheets, plate and frame, pleated cartridges, tubular, hollow fibre, capillary module, and spiral w ound. More particularly, this end Use sector has considerable demaitd for membranes able to resist high temperature or highly corrosive fluids, such that metallic membranes and ceramic materials, especially of the monolith type w ith parallel cylindrical chambers, are w idely used. 

Daramola MO, Burger AJ, Pera-Titus M, Giroir-Eendler A, Miachon S, Lorenzen L, Dahnon JA. Nanocomposite MFI-ceramic hollow fibre membranes via pore-pugging synthesis Prospects for xylene isomer separation. J Membr Sci 2009 337 106-112. 

Kingsbury, B.F.K. (2010) A morphological study of ceramic hollow fibre membranes a perspective on multifunctional catalytic membrane reactors, Imperial College London PhD thesis. 

Han, D Tan, X., Yana, Z. et al. (2013) New morphological Bag jSfg jCoq gFCo 203. a hollow fibre membranes with high oxygen permeation fluxes. Ceramics International, 39 (1), 431 37. 

Thursfield, A. and Metcalfe, I.S. (2007) Air separation using a catalytically modified mixed conducting ceramic hollow fibre membrane module. Journal of Membrane Science, 288, 175-187. 

Koonaphapdeelert S., Zhentao W., Li K. (2009), Carbon dioxide stripping in ceramic hollow fibre membrane contactors, Chem. Eng. Sci., 64,1-8. 

Wu Z, Wang B and Li K (2010), A novel dual-layer ceramic hollow fibre membrane reactor for methane conversion ,/ Membrane Sci, 352,63-70. 

SrCoo.9Sco.i03 a perovskite hollow fibre membranes for air separation at intermediate temperatures. /. Eur. Ceram. 

Zuo, M., Zhuang, S., Tan, X., Meng, B., Yang, N., and Liu, S. (2014) Ionic conducting ceramic-carbonate dual phase hollow fibre membranes for high temperature carbon dioxide separation./. Membr. Sci., 458,... 

Wu, Z., Wang, B. and Li, K. (2010). A novel Dual-Layer Ceramic Hollow Fibre Membrane Reactor for Methane Conversion, J. Membrane Sci., 352, pp. 63-70. 

Tan, X., Song, J., Meng, X. and Meng, B. (2012) Preparation and characterization of BaCeoo.95Tbo.os03-a hollow fibre membranes for hydrogen permeation./o ma/ of the European Ceramic Society, 32, 2351-2357. 

Kilgus, M. et al.. Palladium coated ceramic hollow fibre membranes for hydrogen separation. Desalination, 2006. 200(1-3) 95-96. 

Koonaphapdeelert, S. et al.. Solvent distillation by ceramic hollow fibre membrane contactors. Journal of Membrane Science, 2008.314(1/2) 58-66. 

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