ELECTROCHEMICAL TREATMENT OF WASTEWATER CONTAINING MIXED REACTIVE DYES USING CARBON NANOTUBE MODIFIED CATHODE ELECTRODES

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JAFARZADEH NADER

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Journal: WATER AND WASTEWATER Year:2016 | Volume:27 | Issue:5 (105) Page(s): 46-52

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Information Journal Paper

Title

ELECTROCHEMICAL TREATMENT OF WASTEWATER CONTAINING MIXED REACTIVE DYES USING CARBON NANOTUBE MODIFIED CATHODE ELECTRODES

Author(s)

JAFARZADEH NADER | Issue Writer Certificate

Keywords

ELECTROQ2

FENTONQ2

REACTIVE DYESQ1

CARBON NANO TUBESQ3

COD REDUCTIONQ3

Abstract

Nowadays, advanced ELECTROchemical oxidation processes are promising methods for the treatment of wastewaters containing organic dyes. One of these methods is the ELECTRO-Fenton (EF) technique in which an electrical current is applied to the cathode and anode ELECTROdes to promote ELECTROchemical reactions that generate hydroxyl radicals which mineralize organic pollutants and remove them from wastewater. To carry out the ELECTRO-Fenton process In this work, the carbon paper (CP) ELECTROde was initially modified with carbon nanotubes (CNT) to produce the CP-CNT ELECTROde which was used as the cathode to remove a mixture of organic dyestuff (containing Reactive Blue 69, Reactive Red 195, and Reactive Yellow 84) from wastewaters. Comparison of the two types of cathode ELECTROdes (i.e., CNT and the modified CP-CNT) showed that the CP-CNT outperformed the CP ELECTROde. The EF process was employed to treat 500 ml of a mixture of dyes (50 mg/L of each dye) containing sodium soulfate and Fe+3 ions. The results revealed that the highest color removal efficiency was achieved when a current of 300 mA was applied for 210 min. COD measurments were used to calculate the effective current and power consumption. It was found that the 300 mA current applied over a period of 210 min yielded the highest effective current and the lowest power consumption. The amount of dyes mineralized by the EF process in the dye solution indicated that 78% of the initial COD had been removed under the above conditions. It may be concluded that the ELECTRO-Fenton process can be successfully used for the treatment of wastewaters containing mixtures of dye pollutants. Cathode ELECTROde type, electrical current, and ELECTROlysis duration were identified as the parameters affecting the process.

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APA: Copy

JAFARZADEH, NADER. (2016). ELECTROCHEMICAL TREATMENT OF WASTEWATER CONTAINING MIXED REACTIVE DYES USING CARBON NANOTUBE MODIFIED CATHODE ELECTRODES. WATER AND WASTEWATER, 27(5 (105)), 46-52. SID. https://sid.ir/paper/103399/en

Vancouver: Copy

JAFARZADEH NADER. ELECTROCHEMICAL TREATMENT OF WASTEWATER CONTAINING MIXED REACTIVE DYES USING CARBON NANOTUBE MODIFIED CATHODE ELECTRODES. WATER AND WASTEWATER[Internet]. 2016;27(5 (105)):46-52. Available from: https://sid.ir/paper/103399/en

IEEE: Copy

NADER JAFARZADEH, “ELECTROCHEMICAL TREATMENT OF WASTEWATER CONTAINING MIXED REACTIVE DYES USING CARBON NANOTUBE MODIFIED CATHODE ELECTRODES,” WATER AND WASTEWATER, vol. 27, no. 5 (105), pp. 46–52, 2016, [Online]. Available: https://sid.ir/paper/103399/en

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