Treatment of folic acid wastewater by 3D Fe-N-TiO2 /AC photoelectrocatalysis system

Water Science and Technology : a Journal of the International Association on Water Pollution Research
Junwo ZhouFang Liu

Abstract

In this work, particles of activated carbon supported by Fe-N-TiO2 (Fe-N-TiO2/AC) were synthesized and used as the three-dimensional (3D) particle electrode for folic acid wastewater treatment in the 3D electrolysis and photocatalysis coupling process. The structure, morphology, and physical and electrochemical properties of the Fe-N-TiO2/AC particles were characterized, and the results showed that Fe-N-TiO2 was bound on the surface of AC particles by chemical attachment, and the Fe-N-TiO2/AC particles had better capability of adsorption and charge transfer as compared with the TiO2/AC particles. The effects of key operating parameters in the reaction process, including the current density (optimum 0.6 mA/cm2), aeration (optimum 5 L/min), pH value (optimum 5) and the ratio of Fe-N-TiO2/AC particles to cellulose acetate film coating AC particles (optimum 4:1), were optimized regarding the total oxygen carbon (TOC) removal. Under the optimum conditions, TOC removal from folic acid wastewater reached 82.4% during 120 min photoelectrocatalysis. The kinetic analysis and mechanism study showed that the degradation process fitted to the second-order kinetic model better than to the first-order, and the system exhibited synergistic eff...Continue Reading

References

Jan 5, 2011·Journal of Colloid and Interface Science·Udaya AruldossG Sekaran
Nov 28, 2015·Journal of Environmental Management·Zhiyao Shen, Wm Brian Arbuckle
May 11, 2018·Journal of Environmental Management·Devagi KanakarajuMichael Oelgemöller

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