SA-PQ-11/CF anodes for improvement on MFC wastewater treatment efficiency and power generation performance
In order to improve the wastewater treatment efficiency and power generation performance of microbial fuel cell(MFC),a sodium alginate(SA)-polyquaternium 11(PQ-11)/carbon felt(CF)anode(SA-PQ-11/CF)was prepared,and a MFC system was constructed using pharmaceutical wastewater and molasses wastewater as anolytes and CF as cathode,respectively.The anode was characterized by SEM for surface morphology analysis,and its performance was evaluated by cyclic voltammetry(CV),electrochemical impedance spectroscopy(EIS)and chemical oxygen demand(COD)calculation.The results showed that the SA-PQ-11/CF anode exhibited a large specific surface area,the solution resistance and charge transfer resistance of MFC significantly reduced.With the anolyte as pharmaceutical wastewater,the steady-state output voltage and the COD removal rate of MFC using SA-PQ-11/CF anode were about 0.22 V and 62％,respectively,100％and 130％higher than those using CF anode.When molasses wastewater was used as anolyte,the steady-state voltage and COD of MFC using SA-PQ-11/CF anode were 0.15 V and 43％,respectively,which were 275％and 95％higher than those using CF anode.
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