A bentonite-based composite was synthesized by applying thin coatings of natural organic matter onto bentonite particles in aqueous suspension. Natural organic matter, mostly comprised of humic acids, was isolated from peat by alkaline extraction. It was insolubilized and immobilized on bentonite by heating at 350 °C in an inert nitrogen atmosphere. The composite obtained was then used to remove manganese from aqueous solutions. The results showed that manganese was removed significantly; the degree of removal was above 94% for initial concentrations of manganese from 0.250 to 10 mg/l. The effect of initial pH on manganese removal, dissolution of immobilized organic matter as well as the changes of pH and conductivity of water after treatment with composite were examined and explained.
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December 2011
This article was originally published in
Journal of Water Supply: Research and Technology-Aqua
Article Contents
Research Article|
December 01 2011
Removal of Mn2+ from water by bentonite coated with immobilized thin layers of natural organic matter
Marjan Ranđelović;
1University of Niš, Faculty of Science and Mathematics, 18000 Niš, Višegradska 33, Serbia
E-mail: [email protected]
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Milovan Purenović;
Milovan Purenović
1University of Niš, Faculty of Science and Mathematics, 18000 Niš, Višegradska 33, Serbia
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Jelena Purenović;
Jelena Purenović
2University of Niš, Faculty of Electronic Engineering, 18000 Niš, A. Medvedeva 14, Serbia
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Milan Momčilović
Milan Momčilović
1University of Niš, Faculty of Science and Mathematics, 18000 Niš, Višegradska 33, Serbia
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Journal of Water Supply: Research and Technology-Aqua (2011) 60 (8): 486–493.
Article history
Received:
October 25 2010
Accepted:
October 26 2011
Citation
Marjan Ranđelović, Milovan Purenović, Jelena Purenović, Milan Momčilović; Removal of Mn2+ from water by bentonite coated with immobilized thin layers of natural organic matter. Journal of Water Supply: Research and Technology-Aqua 1 December 2011; 60 (8): 486–493. doi: https://doi.org/10.2166/aqua.2011.074
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