Study On Grap Hene/Polyanilinemodified Electrode Application Of Double Chamber Microbial Fuel Cells

Microbial fuel cells(MFCS) is a new energy technology. By utilizing the microbial catalysis it turns chemicals energy of organism directly into electricity. It on one hand can deal with the organism in the sewage, on the other hand also produces electricity, which provides a new perspective of settling energy crisis and water pollution. At present, the MFCS is still in the early stages of development that still has numerous defects. How to improve the electricity generation performance of the actor remains one of the biggest challenges that researchers are facing with. Therefore, it is extremely important to know how to optimize the electricity generation performance of MFCS through electrode modification.LAS is a surfactant. As an important raw material of detergent, many of them is led to water body causing sever pollution. The object of the research is double-chamber MFCS. And this article aims at discussing how to use the electrode modification to optimize the electricity generation performance of MFCS. More concretely, in this study, Grap Hene/Polyaniline was chosen to use as the modified materials of electrode. The electrochemical deposition is the method of electrode modification. The influence that modified electrode may exert on the electricity generation performance of MFCS and degradability of LAS will also be discussed. The brief conclusions are as follow.(1). How to use electrochemical deposition to produce Grap Hene/Polyaniline modified electrode.This chapter studied the effect of electrochemical preparation method of Grap Hene/Polyaniline modified electrode. First, it discusses the fact that different concentrations of anilines would have different effects on producing Grap Hene/Polyaniline modified electrode. Then, the research compares the effects Grap Hene/Polyaniline modified electrode under different p H system. By electrochemical process, this paper compares the discrepancy among the conductive performance of the electrode that is produced through the mentioned methods. The result shows that the conductivity performs best when the concentration of anilines is 0.1mol/L, and the electrode behaves better in the aspect of electroconductivity under p H 6.(2). How does Grap Hene/Polyaniline modified electrode impacts the electricity generation performance of MFCs.This study explores the impact of modified electrode on the electricity generation performance of MFCS. It also studies the impacts of cathode modification and anode modification on the electricity generation performance of MFCs separately. The research takes the electrode modified by Grap Hene 、 Polyaniline and Grap Hene/Polyaniline as cathode and that modified by stainless steel wire mesh as anode to build double-chamber MFCS. It reveals that the maximum power density of MFCS modified separately by Grap Hene、Polyaniline and Grap Hene/Polyaniline are namely 171.70 m W·m-2、137.28 m W·m-2、223.26 m W·m-2which compared to the density of unmodified cells, have increased namely 74%, 40% and 126%. Among them, the MFCs modified by the Grap Hene/Polyaniline owns the longest discharging cycle which lasts 37.5 hours and 120 hours when it holds 3 discharging cycles constantly.Inversely, The research takes the electrode modified by 石 Grap Hene、Polyaniline and Grap Hene/Polyaniline as anode and that modified by stainless steel wire mesh as cathode to build double-chamber MFCS. It shows that the maximum power density of MFCS modified separately by Grap Hene、Polyaniline and Grap Hene/Polyaniline are namely 135.67 m W·m-2、120.60 m W·m-2、156.00 m W·m-2which compared to the density of unmodified cells, have increased namely 18%, 5% and 35%.(3). The research of microbial fuel cell and the biodegradation of SDBS. First, it compares the electricity generation performance among cathode and anode modified MFCs, cathode modified MFCs and anode modified MFCs as well as their effects on removal rate of SDBS. Among all, the removal rate of the cathode and anode modified MFCs is 69.33%;the coulombic efficiency rate is 9.1%;thw maximum power density is 124.84 m W?m-2. This shows that the reactor has improved apparently compared with the others. Next, the study researches the impact of SDBS with different concentration on the electricity generation performance of MFCs. The result shows that the electricity generation performs best when the concentration bellows 1000mg/L.