Cetyltrimethylammonium bromide-silica membrane for seawater desalination through pervaporation

Singh PS, Chaudhri SG, Kansara AM, Schwieger W, Selvam T, Reuß S, Aswal VK (2015)

Publication Status: Published

Publication Type: Journal article

Publication year: 2015

Journal

Bulletin of Materials Science Springer Verlag (Germany) / Indian Academy of Sciences / Indian Academy of Sciences, Springer

Publisher: Springer Verlag (Germany) / Indian Academy of Sciences / Indian Academy of Sciences, Springer

Book Volume: 38

Pages Range: 565-572

DOI: 10.1007/s12034-015-0878-z

Abstract

A simple preparation of mesostructured cetyltrimethylammonium bromide (CTAB)-silica membrane is reported. It effectively desalinates seawater to pure water through pervaporation separation process. The membrane thickness was of nanometer-length-scale obtained by deposition of CTAB-silica colloids on porous polysulfone support. Scanning electron microscopy (SEM), atomic force microscopy (AFM) and transmission electron microscopy (TEM) studies were performed to characterize the membrane while the structure of the colloids in coating solution was probed by small-angle neutron scattering (SANS). The prepared membranes exhibited excellent salt rejection efficiency of 99.9% in desalination of synthetic seawater of 40,000 ppm NaCl by pervaporation at 25(a similar to)C. The pure water flux was in the range of 1-2.6 kg m(-2) h depending upon the membrane configuration and thickness. The flux could be greatly enhanced by operating the process at higher temperatures of 40-80(a similar to)C but it was at the cost of decreased salt-rejection efficiency. The initial rejection efficiency and flux of the membrane was found to be restored upon cooling the membrane back to room temperature.

Authors with CRIS profile

Wilhelm Schwieger Professur für Technische Chemie (Reaktionstechnik) Stephanie Reuß Lehrstuhl für Chemische Reaktionstechnik (CRT)

Involved external institutions

Council for Scientific and Industrial Research (CSIR) IN India (IN) Bhabha Atomic Research Center / भाभा परमाणु अनुसन्धान केंद्र (BARC) IN India (IN)

How to cite

APA:

Singh, P.S., Chaudhri, S.G., Kansara, A.M., Schwieger, W., Selvam, T., Reuß, S., & Aswal, V.K. (2015). Cetyltrimethylammonium bromide-silica membrane for seawater desalination through pervaporation. Bulletin of Materials Science, 38, 565-572. https://doi.org/10.1007/s12034-015-0878-z

MLA:

Singh, Puyam S., et al. "Cetyltrimethylammonium bromide-silica membrane for seawater desalination through pervaporation." Bulletin of Materials Science 38 (2015): 565-572.

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