期刊
JOURNAL OF HAZARDOUS MATERIALS
卷 177, 期 1-3, 页码 183-189出版社
ELSEVIER
DOI: 10.1016/j.jhazmat.2009.12.015
关键词
Thiocyanate; Wet oxidation; Catalysis; Copper; Removal
资金
- Ministerio Espanol de Educacion y Ciencia [MEC-06-CTM-08688]
The wet oxidation of thiocyanate has been investigated in a semi-batch reactor at temperatures between 423 and 473 K and pressures between 6.1 x 10(3) and 1.0 x 10(4) kPa in the presence of copper(II) sulphate as catalyst. The effects of copper concentration, initial thiocyanate concentration, pressure and temperature on the reaction rate were analyzed and the main products of reaction were identified. A kinetic model for the Cu-catalyzed reaction is here proposed, including temperature, oxygen concentration, and the reduction of Cu2+ to Cu+ that gives an accurate prediction of the oxidation process under the assayed conditions. A mechanistic model based on the formation of a transition complex between a copper cation and two thiocyanate anions has been proposed for the catalytic wet oxidation. (C) 2009 Elsevier B.V. All rights reserved.
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