Health and environment
Alireza Rahmani; Mostafa Leili; Jamal Mehralipor; Marzihe bagheri; Amir shabanloo; sonia chavoshi
Volume 26, Issue 2 , July and August 2019, , Pages 225-232
Abstract
Background: The use of (advanced oxidation processes) AOPs, due to have high performance in degradation of organic compounds is growing. Combined use of electrical current and sulfate free radical creates a synergy effect on removal of pollutant. The aim of this study was to evaluation the performance ...
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Background: The use of (advanced oxidation processes) AOPs, due to have high performance in degradation of organic compounds is growing. Combined use of electrical current and sulfate free radical creates a synergy effect on removal of pollutant. The aim of this study was to evaluation the performance of activated per sulfate by the electrochemical method with copper – iron electrodes for removal of Aniline from aqueous solution.Materials and Methods: In this experimental study, a batch electrochemical reactor with a useful volume of 250 mL, copper and iron electrodes with 2×10×50 mm area from the DC source to aniline degradation was used. Also the Influence of parameters such as pH, Voltage (with amper), initial concentration of per sulfate and initial concentration of Aniline was investigated. Aniline concentrations, determined by spectrophotometer DR5000 making HACH.Results: The experimental results indicated that the removal of aniline was influenced by different operational parameters, So that the highest process efficiency was obtained at pH 4, a voltage of 11 V, a concentration of per sulfate anions equal to 750 mg /L and a concentration of 60 mg /L of pollutant, 90.41% in a 25 minute period. It was also found that with an increase of nitrogen gas, efficiency will be increase and aeration reduces efficiency.Conclusion: The present study demonstrated the proper performance of the process in removing organic pollutants under optimal conditions of use as well as an alternative technology for the treatment of industrial wastewater containing Aniline.
Jamal Mehralipor; Yosef Poreshgh; Amir Shabanloo; Mohammadreza Samarghandi; Roghiyeh Safari; Parisa Solgi
Volume 21, Issue 2 , May and June 2014, , Pages 252-262
Abstract
Background and objectives: Cyanide ion is one of the most dangerous compounds for the man. Electrocoagulation process with high efficiency to removing pollutants, than researchers considered a effective process. The aim of this study was to determine the efficiency of electrocoagulation process by aluminum ...
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Background and objectives: Cyanide ion is one of the most dangerous compounds for the man. Electrocoagulation process with high efficiency to removing pollutants, than researchers considered a effective process. The aim of this study was to determine the efficiency of electrocoagulation process by aluminum electrodes in cyanide removal from synthetic wastewater using magnesium oxide as a coagulantaid.
Mehods: In this study, a reactor with four aluminum electrodes with dimensions 200 × 20 × 2 mm use of 1 Liter of useful volume of electricity generating device for the removal of cyanide was used. Effect of parameters such as pH(3-9), voltage (10-30 V), the initial concentration of cyanide(50-500 ppm) and different concentrations of magnesium oxide particles (0.1 to 1 mg l) as coagulant aid in the process were investigated.
Results: The results show that the efficiency of EC process at pH 5, voltage of 30 V and an initial concentration of cyanide, 50 mg/lit in 45 minutes, was 80 percent. process will Efficiency by adding coagulant aid. In optimal amounts of coagulant aid (0.1 mg/lit) in electrocoagulation process on the removal of the cyanide 90% was achieved.
Conclusion: Electrocoagulation process is suitable process for the removal of cyanide. Also, Magnesium Oxide as a coagulant aid in this process was good and increase process efficiency.