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Appl. Sci. 2018, 8(2), 194; https://doi.org/10.3390/app8020194

Mathematical Modelling of Nitrate Removal from Water Using a Submerged Membrane Adsorption Hybrid System with Four Adsorbents

1
Faculty of Engineering, University of Technology Sydney (UTS), P.O. Box 123, Broadway, NSW 2007, Australia
2
Department of Polymer Science and Engineering, Sunchon National University, 255 Jungang-Ro, Suncheon-si, Jeollanam-do 57922, Korea
*
Author to whom correspondence should be addressed.
Received: 11 December 2017 / Revised: 16 January 2018 / Accepted: 25 January 2018 / Published: 29 January 2018
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Abstract

Excessive concentrations of nitrate in ground water are known to cause human health hazards. A submerged membrane adsorption hybrid system that includes a microfilter membrane and four different adsorbents (Dowex 21K XLT ion exchange resin (Dowex), Fe-coated Dowex, amine-grafted (AG) corn cob and AG coconut copra) operated at four different fluxes was used to continuously remove nitrate. The experimental data obtained in this study was simulated mathematically with a homogeneous surface diffusion model that incorporated membrane packing density and membrane correlation coefficient, and applied the concept of continuous flow stirred tank reactor. The model fit with experimental data was good. The surface diffusion coefficient was constant for all adsorbents and for all fluxes. The mass transfer coefficient increased with flux for all adsorbents and generally increased with the adsorption capacity of the adsorbents. View Full-Text
Keywords: nitrate in water; submerged membrane adsorption hybrid system; adsorption; modelling adsorption; ion exchange resin nitrate in water; submerged membrane adsorption hybrid system; adsorption; modelling adsorption; ion exchange resin
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Kalaruban, M.; Loganathan, P.; Shim, W.G.; Kandasamy, J.; Vigneswaran, S. Mathematical Modelling of Nitrate Removal from Water Using a Submerged Membrane Adsorption Hybrid System with Four Adsorbents. Appl. Sci. 2018, 8, 194.

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