M
Maurice S. Onyango
Researcher at Tshwane University of Technology
Publications - 131
Citations - 5625
Maurice S. Onyango is an academic researcher from Tshwane University of Technology. The author has contributed to research in topics: Adsorption & Aqueous solution. The author has an hindex of 32, co-authored 125 publications receiving 4603 citations. Previous affiliations of Maurice S. Onyango include Stellenbosch University & Nagoya University.
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Adsorption equilibrium modeling and solution chemistry dependence of fluoride removal from water by trivalent-cation-exchanged zeolite F-9.
TL;DR: Al3+-exchanged zeolite was found to be superior to La3+ -exchangedZeolite in fluoride uptake within the tested concentration range, and factors from the solution chemistry that affected fluoride removal from water were the solution pH and bicarbonate content.
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Enhanced removal of Cr(VI) from aqueous solution using polypyrrole/Fe3O4 magnetic nanocomposite
TL;DR: Thermodynamic study revealed that the adsorption process is endothermic and spontaneous in nature and the regenerated adsorbent can be reused successfully for two successive adsorptive-desorption cycles without appreciable loss of its original capacity.
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Removal of hexavalent chromium from aqueous solution using polypyrrole-polyaniline nanofibers
TL;DR: In this article, the authors used polypyrrole-polyaniline (PPy-PANI) nanofibers as adsorbent of Cr(VI) and showed that the adsorption process is spontaneous, endothermic and marked with an increase in randomness at the solid-liquid interface.
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Removal of fluoride from aqueous solution by polypyrrole/Fe3O4 magnetic nanocomposite.
TL;DR: The ability of the adsorbent to remove fluoride ions from aqueous solution was demonstrated in a batch sorption mode and Thermodynamic parameters confirm the spontaneity and endothermic nature of the fluoride adsorption.
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Removal of fluoride ions from aqueous solution at low pH using schwertmannite.
TL;DR: The experimental and equilibrium modeling results revealed that the capacity of schwertmannite for fluoride is high but insensitive to changes in solution temperature, and an increase in equilibrium pH of sample solution reduced significantly the fluoride removal efficiency.