Investigation of different reactor configurations for electrochemical ferrate (VI) synthesis

Yıl 2018, Cilt: 2 Sayı: 2, 89 - 94, 28.12.2018

Sibel Barışçı

https://doi.org/10.32571/ijct.452489

Cited By: 1

Öz

      There are numerous methods used for wastewaters
treatment. The agents to be used in those methods should be harmless and
degraded to non-hazardous byproducts. Ferrate (VI) has high oxidation
capability and is reduced to a non-toxic byproduct, Fe (III), during the
degradation of pollutants. Thus, ferrate (VI) is one of the most influential
and eco-friendly chemical for water and wastewater treatment. This study aimed
to investigate electrochemical ferrate (VI) synthesis, using two different
reactor configurations using pure iron plates (R1) and cast-iron flakes (R2) as
electrode. In this study, the optimum conditions have been determined
experimentally for electrochemical synthesis of ferrate (VI). Ferrate (VI)
yield and current efficiency are leading parameters for this purpose. The most
appropriate electrolyte concentration is found as 16 M, and the applied current
of 1 A is the optimum value with the highest determined current efficiency for
both reactor configurations. In comparison with reactor configurations, R2 with
iron flakes provided higher ferrate (VI) yield and current efficiency providing
higher surface area and higher dissolution rates.

Anahtar Kelimeler

Ferrate (VI), reactor design, electrochemical synthesis method, optimum conditions

Kaynakça

• 1. Alsheyab, M.; Jiang, J.Q.; Stanford, C. Journal of Environmental Management, 2009, 90, 1350-1356.
• 2. Bouzek, K.; Roušar, I. Journal of Applied Electrochemistry, 1993, 23, 1317-1322.
• 3. Bouzek, K.; Roušar, I. Journal of Applied Electrochemistry, 1997, 27, 679-684.
• 4. Yu, X.; Licht, S. Journal of Applied Electrochemistry, 2008, 38, 731–742.
• 5. He, W.; Wang, J.; Yang, C.; Zhang, J. Electrochimica Acta, 2006, 51, 1967-1973.
• 6. Barisci, S.: Ulu, F.; Sarkka, H.; Dimoglo, A.; Sillanpaa, M. International Journal of Electrochemical Science, 2014, 9, 3099-3117.
• 7. Sun, X.; Zu, K.; Liang, H.; Sun, L.; Zhang, L.; Wang, C.; Sharma, V. K. Journal of Hazardous Materials, 2018, 344, 1155-1164.
• 8. Liu, C.; Zhou, Z.; Yuan, B.; Liu, S. Journal of Environmental Engineering, 2018, 144, 1-7.
• 9. Macova, Z.; Bouzek, K.; Sharma, V.K. Journal of Applied Electrochemistry, 2010, 40, 1019-1028.
• 10. Macova, Z.; Bouzek, K. Journal of Applied Electrochemistry, 2012, 42, 615-626.
• 11. Sun, X.; Zhang, Q.; Liang, H.; Ying, L.; Xiangxu, M.; Sharma, V.K. Journal of Hazardous Materials, 2016, 130-136.
• 12. Hives, J.; Gal, M.; Kerekes, K.; Kubinakova, E.; Mackulak, T. ACS Symposium Series: Ferrites and Ferrates: Chemistry and Applications in Sustainable Energy and Environmental Remediation, 2016, 1238, Chapter 8, 221–240.
• 13. Vogt, H.; Aras, O.; Balzer, J. International Journal of Heat and Mass Transfer, 2004, 47, 787-795.