Performance of Mesoporous Organo Silica Membrane for Desalination

Abstract:

Clean water is essential source for household purpose. However, many surface water contain high salt concentration was found. In this work, membrane was made using tetraethyl orthosilicate (TEOS) as silica precursors and citric acid as single organo catalyst. Membranes were calcined at 200 and 250 °C using Rapid thermal processing (RTP). All membranes were tested via pervaporation. Pervaporation processes allow membrane to separate salt from water as vapour phase with vacuum condition required. Permeate was collected in the cold trap after condenses. This study focus to the performance of organo silica membrane in variance of refluxed 0 and 50 °C and feed concentrations (0.3, 3.5 and 5wt% NaCl) at room temperature (~25 °C). Optimum condition was obtained at reflux 50 °C with high siloxane and Si-C bonds. Carbon content from citric acid promote silica network more strength. The good performances in variance feed concentration were also showed at reflux 50°C with 0.3324 kg.m-2.h-1 (0.3 wt%), 0,2290 kg.m^-2.h^-1 (3.5 wt%) and 0.2168 kg.m^-2.h^-1 (5 wt%). These membranes are categorized as mesoporous and achieve excellent salt rejection >95%.

• Periodical: Materials Science Forum (Volume 1000)
• Pages: 285-292
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.1000.285
• Online since: July 2020
• Authors: Aptar E. Lestari, Muthia Elma*, Sadidan Rabiah, Erdina Lulu Atika Rampun, Aulia Rahma, Amalia Enggar Pratiwi
• Keywords: Mesoporous Silica Membranes, Organo Catalyst, Pervaporation

References

[1] M. Elma, C. Yacou, D. K. Wang, S. Smart, and J. C. Diniz da Costa, Microporous Silica Based Membranes for Desalination, Water, vol. 4, no. 3, p.629, (2012).

DOI: 10.3390/w4030629

[2] M. Elma, C. Yaco, J. C. D. d. Costa, and D. K. Wang, Performance and Long Term Stability of Mesoporous Silica Membranes for Desalination, Journal Membranes, vol. 3, (2013).

DOI: 10.3390/membranes3030136

[3] M. Elma, D. K. Wang, C. Yacou, J. Motuzas, and J. C. D. d. Costa, High performance interlayer-free mesoporous cobalt oxide silica membranes for desalination applications, Desalination, vol. 365, pp.308-315, (2015).

DOI: 10.1016/j.desal.2015.02.034

[4] M. d. H. S. Elma, Synthesis of Silica Xerogels Obtained in Organic Catalyst via Sol Gel Route, Earth and Environmental Science, p.175, (2018).

DOI: 10.1088/1755-1315/175/1/012008

[5] C. B. a. G. W. S. Jeffrey, Sol Gel Science: The Physics and Chemistry of Sol Gel Processing, New York: Academic Press, Inc, (1990).

[6] W. M, Fytik: A General Purpose PPeak Fitting Program, vol. 43, pp.1126-1128, (2010).

[7] M. Elma, D. K. Wang, C. Yacoua, Julius Motuzas, and J. Diniz da Costa, High Performance Interlayer-Free Mesoporous Cobalt Oxide Silica Membranes for Desalination Application, 365, (2015).

DOI: 10.1016/j.desal.2015.02.034

[8] S. S. Ryoji Takahashi , Toshiaki Sodesawa, Masanori Suzuki,, and N. Ichikuni, Ni/SiO2 prepared by sol–gel process using citric acid, Microporous and Mesoporous Materials, vol. 66, p.12, (2003).

DOI: 10.1016/j.micromeso.2003.09.007

[9] M. Elma, D. K. Wang, C. Yacou, and J. C. Diniz da Costa, Interlayer-free P123 carbonised template silica membranes for desalination with reduced salt concentration polarisation, Journal of Membrane Science, vol. 475, pp.376-383, (2015).

DOI: 10.1016/j.memsci.2014.10.026

[10] M. Elma, C. Yacou, J. Diniz da Costa, and D. Wang, Performance and Long Term Stability of Mesoporous Silica Membranes for Desalination, Membranes, vol. 3, no. 3, p.136, (2013).

DOI: 10.3390/membranes3030136

[11] S. Wijaya, M. C. Duke, and J. C. Diniz da Costa, Carbonised template silica membranes for desalination, Desalination, vol. 236, no. 1, pp.291-298, 2009/01/31/, (2009).

DOI: 10.1016/j.desal.2007.10.079

[12] C. X. C. Lin, L. P. Ding, S. Smart, and J. C. Diniz da Costa, Cobalt oxide silica membranes for desalination, Journal of Colloid and Interface Science, vol. 368, no. 1, pp.70-76, 2012/02/15/, (2012).

DOI: 10.1016/j.jcis.2011.10.041