Activation of peroxymonosulfate and recycled effluent filtration over cathode membrane CNFs-CoFe2O4/PVDF in a photocatalytic fuel cell for water pollution control

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Author(s)

Detail(s)

Original languageEnglish
Article number125731
Journal / PublicationChemical Engineering Journal
Volume399
Online published4 Jun 2020
Publication statusPublished - 1 Nov 2020

Abstract

Few studies integrate catalytic membrane in photocatalytic fuel cell (PFC) with peroxymonosulfate (PMS) activation process. In the present work, a novel PFC-membrane reactor system integrating PMS activation (abbreviated as PMS/PFC-MR) was constructed for wastewater treatment, consisting of CNFs-CoFe2O4/PVDF membrane cathode (CNFs-CoFe2O4/PM) and Ag/ZnO NA/NiF photo-anode. The PMS/PFC-MR with enlarged volume exhibited favorable performance, increased berberine degradation by 65.9% and electricity production by 0.33 V, comparing with PFC-MR after 1 h operation. Relative to CNFs/PM (0.89 h-1) and PM (0.53 h-1), the PMS/PFC-MR with CNFs-CoFe2O4/PM greatly enhanced rate constant (4.32 h-1). The results also indicate that recycled filtration over membrane accelerates catalytic degradation of organic pollutant in PMS/PFC-MR. Revealed by the radical quenching and EPR tests, hydroxyl radicals (OH), singlet oxygen radicals(1O2), superoxide radicals (O2•-) and sulfate radicals (SO4•-) were all confirmed present and responsible for pollutant degradation in PMS/PFC-MR. Consequently, the PMS/PFC-MR system expands the radical reactions to enhance degradation and electricity generation, due to the synergy of accelerated Co(II)/PMS oxidation with membrane filtration and photo-electro catalysis. This system provides a new efficient strategy towards wastewater treatment with energy recovery.

Research Area(s)

  • Cathodic membrane, PMS activation, Electricity generation, Berberine, Sulfate radical

Citation Format(s)

Activation of peroxymonosulfate and recycled effluent filtration over cathode membrane CNFs-CoFe2O4/PVDF in a photocatalytic fuel cell for water pollution control. / Zhang, Yizhen; Chen, Qiyuan; Liu, Lifen ; Wang, Yu; Leung, Michael K.H.

In: Chemical Engineering Journal, Vol. 399, 125731, 01.11.2020.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review