The desalination of an Arthrospira platensis feed solution byelectrodialysis and reverse osmosis

Brauns, E.; Hoof, Veerle Van; Dotremont, Chris; Wever, Heleen De; Lens, P.; Hoof, E. Van; Thomas, Gilles; Molenbergh, B.; Demey, Dries

doi:10.1016/j.desal.2004.03.017

Cited by 10 publications

(1 citation statement)

References 3 publications

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“…Considering that, attention has been given on desalination of sea water and brackish water to produce fresh water by various techniques, such as reverse osmosis (RO), electro-dialysis, distillation, etc. RO and electro-dialysis are membrane-based separation processes for desalination of brine [1,2]. RO is one of the most effective and popular membrane-based techniques for desalination, but the process is very energy intensive [3] and economically not viable, particularly in the underdeveloped and developing countries.…”

Section: Introductionmentioning

confidence: 99%

Development of hydrophobic clay–alumina based capillary membrane for desalination of brine by membrane distillation

Das

Sondhi

Majumdar

et al. 2016

Journal of Asian Ceramic Societies

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a b s t r a c tClay-alumina compositions of 0, 20, 40 and 55 weight percent (wt%) clay and rest alumina were maintained in porous support preparation by extrusion followed by sintering at 1300 • C for 2.5 h to obtain 3 mm/2 mm (outer diameter/inner diameter) capillary. 1H,1H,2H,2H-perfluorodecyltriethoxysilane (97%) (C8) was used to modify the capillary surface of all compositions without any intermediate membrane layer to impart hydrophobic characteristics and compared in terms of contact angle produced by the capillaries with water and liquid entry pressure (LEP w ). FTIR analysis showed that the hydrophilic surface of the capillary membranes was efficiently modified by the proposed grafting method. Capillary with 55 wt% clay produced a pore size of 1.43 micron and was considered as an ideal candidate for grafting with C8 polymer to impart surface hydrophobicity. The contact angle and LEP w value obtained for this modified membrane (C-55-M) were 145 • and 1 bar, respectively. The modified capillary membrane was applied for desalination of brine by air gap membrane distillation (AGMD) at a feed pressure of 0.85 bar. Maximum flux obtained for C-55-M membrane was 98.66 L/m 2 day at a temperature difference of 60 • C with salt rejection of 99.96%. Mass transfer coefficient of C-55-M was 16 × 10 −3 mm/s at feed temperature of 70 • C.

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Section: Introductionmentioning

confidence: 99%