Abstract
Heterogeneous Fenton-like process using fly ash as a catalyst was studied to degrade n-butyl xanthate form aqueous solution. The different reaction parameters on the degradation efficiency of the process were investigated. The fly ash/H2O2 catalyst possesses a high oxidation activity for n-butyl xanthate degradation in aqueous solution. It is found that both the dosage of catalyst and initial solution pH significantly affect the n-butyl xanthate conversion efficient. The results indicate that by using 1.176 mmol/L H2O2 and 1.0 g/L fly ash catalyst with mass fraction of 4.14% Fe(III) oxide at pH 3.0, almost 96.90% n-butyl xanthate conversion and over 96.66% COD removal can be achieved within 120 min with heterogeneous catalysis by fly ash. CS2 as an intermediate of n-butyl xanthate oxidation. Finally, it is demonstrated that the fly ash/H2O2 catalytic oxidation process can be an efficient method for the treatment of n-butyl xanthate containing wastewater.
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Foundation item: Project(CZQ13002) supported by the Special Fund for Basic Scientific Research of Central Universities, China
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Chen, Sh., Du, Dy. Degradation of n-butyl xanthate using fly ash as heterogeneous Fenton-like catalyst. J. Cent. South Univ. 21, 1448–1452 (2014). https://doi.org/10.1007/s11771-014-2084-3
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DOI: https://doi.org/10.1007/s11771-014-2084-3