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Andjelkovic, I., Manojlovic, D., Skrivanj, S., Pavlovic, B.M., Amaizah, N.R., Roglic, G.. (1392). As(III) and As(V) Sorption on MnO2 Synthesized by Mechano-chemical Reaction from Aqueous phase. , 7(2), 395-402. doi: 10.22059/ijer.2013.618
I. Andjelkovic; D. Manojlovic; S. Skrivanj; B.M. Pavlovic; N.R. Amaizah; G. Roglic. "As(III) and As(V) Sorption on MnO2 Synthesized by Mechano-chemical Reaction from Aqueous phase". , 7, 2, 1392, 395-402. doi: 10.22059/ijer.2013.618
Andjelkovic, I., Manojlovic, D., Skrivanj, S., Pavlovic, B.M., Amaizah, N.R., Roglic, G.. (1392). 'As(III) and As(V) Sorption on MnO2 Synthesized by Mechano-chemical Reaction from Aqueous phase', , 7(2), pp. 395-402. doi: 10.22059/ijer.2013.618
Andjelkovic, I., Manojlovic, D., Skrivanj, S., Pavlovic, B.M., Amaizah, N.R., Roglic, G.. As(III) and As(V) Sorption on MnO2 Synthesized by Mechano-chemical Reaction from Aqueous phase. , 1392; 7(2): 395-402. doi: 10.22059/ijer.2013.618

As(III) and As(V) Sorption on MnO2 Synthesized by Mechano-chemical Reaction from Aqueous phase

International Journal of Environmental Research
مقاله 13، دوره 7، شماره 2، تیر 2013، صفحه 395-402    اصل مقاله (229.72 K)
نوع مقاله: Original Research Paper
شناسه دیجیتال (DOI): 10.22059/ijer.2013.618
نویسندگان
I. Andjelkovic* 1؛ D. Manojlovic2؛ S. Skrivanj2؛ B.M. Pavlovic3؛ N.R. Amaizah2؛ G. Roglic2
1Innovation center of the Faculty of Chemistry, Studentski Trg 12-16, P.O. Box 51, 11158 Belgrade 118 Serbia
2Faculty of Chemistry, Studentski Trg 12-16, Belgrade, Serbia
3Faculty of Electrical Engineering, B. Kralja Aleksandra 73, Belgrade, Serbia
چکیده
Nanoparticles of manganese-dioxide synthesized by mechano-chemical reaction were used for
As(III) and As(V) sorption from water environment. The influence of a milling time of manganese-dioxide on sorption was examined with batch procedure. Sorption as a function of contact time was investigated. Kinetic of sorption, for both As(III) and As(V), was fast. The equilibrium condition for milled sorbents was achieved after one hour of mixing. Experimental data were fitted to Freundlich and Langmuir adsorption models. Both models represent experimental data well with slightly better regression coefficient for Freundlich isotherm model. With the increase of the milling time manganese-dioxide adsorption capacity for As(III) and As(V) increased. The decrease of average particle size with milling could be responsible for increase of sorption capacity. The influence of pH on sorption was also investigated. The sorption of both, As(III) and As(V), in investigated pH range (6.0-9.0) was not significantly disturbed and showed similar behaviour, what could indirectly imply oxidation of As(III) to As(V) before sorption.
کلیدواژه‌ها
Arsenite؛ arsenate؛ Removal؛ mechano-chemical reaction؛ drinking water
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