Catalytic air oxidation of manganese in synthetic waters |
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Authors: | Nihan?Kaya Erdal?Karadurmus Email author" target="_blank">Ahmet?AlicilarEmail author |
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Institution: | (1) Chemical Engineering Department, Corum Engineering Faculty, Gazi University, Corum, Turkey |
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Abstract: | An attempt was made to study the oxidation of manganese by air in synthetic waters. A series of batch experments were performed
at differnet values of concentration, temperature and pH. Unoxidized manganese in the solution was determined by formaldoxime
spectrometric method. Results of these studies indicated that the air oxidation of manganese soluble in water can be effectively
performed in basic media and that oxidation yield increasedwith an increase in pH and concentration. The yield was very high
in the presence of manganese dioxide, sepiolite or clinoptilolite in solution and, the oxidation was almost completed especially
at high values of pH and concentration. The reaction was found to be first order with respect to Mn2+ with a very low activation energy. A yield of 62% was obtained for the air oxidation of wastewater taken from the treatment
plant of Corum Municipality. |
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Keywords: | Water pollution manganese aeration oxidation catalyst |
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