Supercritical Water Oxidation Kinetics of Textiles Dyeing Wastewater

Qi Wang; Yong Kang Lv; Rong Zhang; Ji Cheng Bi

doi:10.4028/www.scientific.net/AMR.634-638.302

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 634-638Supercritical Water Oxidation Kinetics of Textiles...

Supercritical Water Oxidation Kinetics of Textiles Dyeing Wastewater

Abstract:

Oxidation of the textiles dyeing wastewater was studied in a continuous-flow reactor that was operated between 400 and 650°C at a fixed pressure of 25 MPa. The total organic carbon (TOC) concentration of the raw wastewater was in the 112.52 mmol/L . Hydrogen peroxide (H2O2) was used as an oxygen source. According to the wastewater and oxidant concentrations, the global rate expression was regressed from the complete set of data under various conditions of the reaction. The reaction rate expression for the oxidation of the textiles dyeing wastewater was determined with the activation energy of 39.908 (±1.99) kJ/mol and the pre-exponential factor of 114 (±7.5) /s; and the reaction orders for the TOC and the oxidant were 0.896±0.01 and 0.061±0.01 at a 95% confidence level.

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Periodical:

Advanced Materials Research (Volumes 634-638)

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302-306

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.634-638.302

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Online since:

January 2013

Authors:

Qi Wang, Yong Kang Lv, Rong Zhang, Ji Cheng Bi

Keywords:

Dyeing Wastewater, Kinetic, Scwo, TOC

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