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ISSN 2063-5346
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A COMPARATIVE STUDY OF IRON PLATE ELECTRODES AND ALUMINIUM PLATE ELECTRODES FOR PHOSPHATES REMOVAL BY ELECTROCOAGULATION PROCESS AND IT‘S OPTIMIZATION USING BOX–BEHNKEN DESIGN.

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Vykuntam Supriya1, Bandela Sowjanya2, Dasari Kiran Kumar3, Lavu Ramadevi4, Venkata Rao Poiba5, Meena Vangalapati
» doi: 10.31838/ecb/2023.12.si5.040

Abstract

The present study describes an electrocoagulation procedure that uses iron and aluminium plates both as cathode and anodes to treat phosphate-contaminated water. Three isotherm models were used to assess the different parameters, including the effects of NaCl concentration, pH, initial concentration of phosphate, voltage, temperature, and the adsorption capacity. The monolayer coverage of adsorbed molecules is implied by the phosphate adsorption, which ideally fits the Langmuir adsorption isotherm. The findings indicated that iron plate electrode provided the highest removal effectiveness of 93.94%. Adsorption is governed by second-order kinetics. Optimization of phosphates by electrocoagulation process is performed with above parameters and observed for iron plate electrode and aluminium plate electrode to be contact time (25 &35min) , Voltage (10 & 20V), pH (7 & 6), NaCl Concentration (2.0 & 2.5 g/L) and initial concentration (20 mg/L). From these optimum conditions the highest removal of phosphate obtained is 93.94% for iron plate electrode which is higher than removal obtained by aluminium plate electrode (91.9%). Kinetic, isothermal and thermodynamic studies has been studied and obtained best results. SEM and FTIR analysis has been done for the samples obtained. Using the experimental data, the predicted data is been analyzed by Box-Behnken design, where, It showed good fit with experimental data.

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