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Oxidation rate in the preparation of polyferric sulfate coagulant

Article type: Research Article

Authors: Chang, Qing

Affiliations: Department of Environmental Engineering, Lanzhou Railway College,Lanzhou 730070, China

Abstract: The oxidation rate of ferrous sulfate was investigated in the preparation of polyferric sulfate(PFS) coagulant. It was proved that this reaction is zero order with respect to Fe²^+, first order with respect to NO_2(g) and first order with respect to the interface area between gas phase and liquid phase. If the partial pressure of NO_2(g) in gas phase is increased or the interface area is increased, the time needed to complete the reaction will be decreased.

Keywords: coagulant, flocculant, polyferric sulfate, PFS, oxidation rate, water treatment

Journal: Journal of Environmental Sciences, vol. 13, no. 1, pp. 104-107, 2001

Received 1 January 2001
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Accepted 1 January 2001
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Published: 2001
Price: EUR 27.50
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