Optimization by response surface method of dissolution of metallic zinc obtained from waste Zinc-Carbon batteries in nitric acid solutions

Demirkıran N., Senel M., Turhan Özdemir G. D.

REVISTA DE METALURGIA, cilt.57, sa.2, 2021 (SCI-Expanded) identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 57 Sayı: 2
  • Basım Tarihi: 2021
  • Doi Numarası: 10.3989/revmetalm.191
  • Dergi Adı: REVISTA DE METALURGIA
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Compendex, Directory of Open Access Journals, DIALNET
  • Anahtar Kelimeler: Dissolution, Metallic zinc, Nitric acid, Response surface method, Waste battery, COMPOSITE ROTATABLE DESIGN, PART II, RECOVERY, MANGANESE
  • İnönü Üniversitesi Adresli: Evet

Özet

In this study, the interactive effects of the process variables containing the concentration of nitric acid, the amount of zinc, and the reaction time on the efficiency of the dissolution of metallic zinc in nitric acid solutions were investigated by applying response surface methodology (RSM). It was found that the dissolution efficiency increased with an increase in the concentration of nitric acid, and the reaction time, and with a decrease in the amount of zinc. The multiple regression analysis to the experimental data was applied to observe the interactive effects of the experimental parameters. The second-order polynomial equation was obtained. The optimal experimental conditions were determined by using the optimization module in Design-Expert software, and different solution points were found.