Study on Treating Stench Wastewater Containing Dodecyl Mercaptan by Electrolyzing Sodium Sulfate Solution
This paper suggests a technological process to oxidize stench sulfide wastewater containing dodecyl mercaptan with electrolyzing Na2SO4 in the presence of active carbon. Preliminary experiments were conducted and good results were obtained. Under the condition that electrolyzing 1%(m/V)Na2SO4 with 1A current and the reaction temperature remains 30 and the reaction time lasts 10 ~ 30 s, the stench dodecyl mercaptan was eliminated.
Study on Degradation Mechanism and Kinetics of Organic Pollutants by Electrolysis
A study on degradation mechanism and kinetics of organic pollutants by electrolysis with Dimensionally Stabilized Anode(DSA)has been carried out.The results show that HO· with very strong oxidizing power can be produced in electrolysis and make organic pollutants degraded in indirect way.Degradation process meets basically reaction model of two steps and first grade according to the analysis of experimental data with on line least square method.The degradation rate constant of hydroxybenzoic acid and mole adsorptivity of 2,4 dihydroxybenzoic acid at 5.10 nm are obtained.
Oxidation of polymethylated benzenes promoted by.OH radicals
OH radicals, produced in aqueous acid media by the electrogenerated system Fe(II)/H2O2, promote the oxidation of polymethylated benzenes. Under our experimental conditions only one -CH3 group was oxidized to -CHO. A reduction of aldehyde to alcohol by.OOH radicals was shown to occur when H2O2 was produced in excess over Fe(II). In hydrochloric acid or in perchloric acid with Cl− ions added, a remarkable increase of the yields was observed. The results are discussed on the basis of the kinetic parameters of the reactions involved in the process.