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The electrochemical oxidation of atrazine on Ti/SnO2-Sb2O5/PbO2 electrode was studied by cyclic voltammetry in this paper. The electrochemical behaviour of the electrode in sodium sulfate solution and in the mixture solution of sodium sulfate and atrazine has been studied. The experimental results of cyclic voltammetry showed that acidic media was suitable for efficient electrochemical oxidation of...
This paper suggests a technological process to oxidize stench sulfide wastewater containing dodecyl mercaptan with electrolyzing NaOH in the presence of active carbon. Preliminary experiments were conducted and good results were obtained. Under the condition that electrolyzing 1% NaOH with 3A current and the reaction temperature remains 20°C and the reaction time lasts 10~30 s, the stench dodecyl...
SnCl4-5H2O, Sb2O3, and Gd(NO3)3 were used as the precursors to prepare the film of rare earth Gd doping SnO2/Sb coating anode by coprecipitation method. The phenolic wasterwater was treated by the Gd doping SnO2/Sb coating anode. The factors affecting the degradation rate of phenol were examined, such as the electrolyte concentration, current density, solution pH , solution temperature and doping...
Azo dyes brilliant red X-3B wastewater simulated were treated by process containing bio-electrochemical hydrolysis-acidification reactor(BEH) and biological contact oxidation process (BCO), and by process containing biological hydrolysis-acidification reactor(BH) and zeolite MBR. The performance of aforementioned two processes was compared. The result indicated that the treatment effect by BEH for...
In order to evaluate the electrolytic decomposition process of ammonia, the effects of current density and chloride ion were investigated. The Ti/RuO2- Pt electrode was used as the anode, and Ti electrode as the cathode. The current densities, of 5mA/cm2, 10mA/cm2, and 15mA/cm2, were applied during electrolysis. It was indicated that the ammonia-nitrogen removal efficiency increased with the current...
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...
This paper suggests a technological process to oxidize stench sulfide wastewater containing dodecyl mercaptan with electrolyzing NaCl in the presence of active carbon. Preliminary experiments were conducted and good results were obtained. Under the condition that electrolyzing 30 g/L NaCl with certain current and the reaction temperature remains 20degC and the reaction time lasts 10~30 s, the stench...
In this paper, the elimination of o-nitrophenol (o-NPh) in aqueous solutions by electrochemical oxidation at titanium-based bismuth-doped lead dioxide (Ti/Bi-PbO2 ) anode and carbon gas diffusion cathode (carbon GDC) was investigated. Four factors of the degradation, i.e. current density I, initial pH, electrolysis temperature T, air input A, were studied. Under the conditions of I = 20 mA/cm2, pH...
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