5th International Conference on Chemical Engineering (ICChE), BUET, Dhaka, Bangladesh
Conference Proceeding & Research Presentation
Moinee, A. Al., Islam, T., and Sanzida, N., December 22, 2017, “Effect of electrodes, aeration, salt bridges and source of microbes in a mediator-free double chambered microbial fuel cell,” ICChE, Fifth International Conference on Chemical Engineering, Dhaka, Bangladesh, pp. 339-348.
Abstract:
The potential of generating bioelectricity in a mediator-free double chambered microbial fuel cell is a dependant variable of the independent parameters stipulated in the cell construction mechanism. The effect of these stipulated independent variables as source of microbial colony, material of construction of electrodes and salt bridges, presence and absence of aeration was evaluated in the cell to have the best efficacy. The efficiency of the fuel cell was studied on the basis of the electricity generated via treatment of waste water and manure used as biowaste. The experiments showed that electrode of more conductive material provided more efficiency. Aluminium foil and carbon cathode were used to be compared which gives 25.1 μA current with 19% COD removal and 185.8 μA current with 53% COD removal respectively in a notable result. Experiments reflected that microorganisms in a solid or semi solid source were less mobile than in the liquid source as in manure with respect to waste water and so the later showed more efficiency than manure by giving maximum 185.8 μA current in waste water and maximum 28.9 μA current in manure for same setup. The efficiency fluctuated when we used agar salt bridge instead of NaCl salt bridge from 185.8 μA to 112.2 μA with 30% COD removal. When the aeration process was stopped in cathode chamber the setup of having the maximum amount of current reduced to an amount of 181.6 μA with 49% COD removal. The aeration in cathodic chamber was important to maintain the preferable pH for the microorganisms while the anodic chamber was to be anaerobic to sustain the biofilm to maintain the production of electrons in an efficient way.
ICChE 2017 Proceedings and Posters
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