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- 저자 : Sevim Alya, Cihan (검색결과 1 건)
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Baybars Ali, Fil,Cansu, Elgun,Sevim Alya, Cihan,Sermin, Gunaslan,Alper Erdem, Yilmaz The Korean Electrochemical Society 2022 Journal of electrochemical science and technology Vol.13 No.4
In the study, Ni<sup>2+</sup> (nickel) removal from synthetically prepared wastewater by electrocoagulation method, which is one of the electrochemical treatment processes, was investigated and parameters such as current density, pH, mixing speed, initial Ni<sup>2+</sup> concentration, supporting electrolyte type and concentration were determined to determine Ni<sup>2+</sup> removal efficiencies effects were studied. Experiment conditions during 30 minutes of electrolysis; the current density was determined as 0.95 mA/cm<sup>2</sup>, the initial pH of the wastewater was 6, the mixing speed was 150 rpm, and the initial nickel concentration was 250 mg/L. The Ni<sup>2+</sup> removal efficiency was obtained as 75.99% under the determined experimental conditions, while the energy consumption was calculated as 3.15 kW-h/m<sup>3</sup>. In the experiments, it was observed that the type and concentration of the supporting electrolyte did not have a significant effect on the Ni<sup>2+</sup> removal efficiency. In the trials where the effect of the support electrolyte concentration was examined, the Ni<sup>2+</sup> removal efficiency was 75.99% in the wastewater environment without the supporting electrolyte, while the Ni<sup>2+</sup> removal efficiency was 81.55% when 7.5 mmol/L NaCl was used after the 30-minute reaction, and the energy consumption was 2.15 kW-h/m<sup>3</sup> obtained as. As a result of the studies, it was concluded that the electrocoagulation process can be applied in the treatment of wastewater containing Ni<sup>2+</sup>.
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