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Indexed by:期刊论文

Date of Publication:2022-06-30

Journal:无机化学学报

Volume:32

Issue:6

Page Number:1055-1062

ISSN No.:1001-4861

Abstract:BiVO4 was successfully synthesized via hydrothermal method, and was introduced into brand-new coupled PEC-MFC and EC-MFC system. The efficiency of BiVO4/PEC-MFC system in removing NH4+-N and RhB as the model pollutant, and the energy consumption were studied. Both in the PEC-MFC system and EC-MFC system with visible light illumination, 95% of RhB can be removed in 120 min. The results demonstrate that the PEC-MFC system shows higher efficiency in converting NH4+-N in weak acidic condition, and oxygen is the decisive factor in the coupling system. The electrical energy per order of PEC-MFC and EC-MFC system are 0.895 and 0 kWh.m(-3), respectively. The maximum cell voltage 0.427 V and power density 755.25 mW.m(-2) can be achieved in the coupled bio-electrochemical and photo-electro-catalytic reactor. The effect of TBA (tetra butyl alcohol) and KI on the PC, PEC-MFC and EC-MFC system was studied for exploring the main oxidative species and pathways (highly active center dot OH, center dot O-2(-)), and for elucidating the coupling mechanisms in PEC-MFC.

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