PJB-2020-429
Comparative performance of carboxymethyl cellulose as substrate for electricity generation in Microbial Fuel Cells: A review
Nazish Manzoor
Abstract
This review paper deals with the comparison of different complex substrates and to overcome performance limitations of cellulosic MFCs. Different experimental design approaches have been employed for the production of bioelectricity in an MFC. The major substrate that have been tried to focus in this review paper is carboxymethyl cellulose (CMC). Carboxymethyl cellulose is an important factor in Microbial fuel cell with great importance in industry. No known enzyme is directly involved in the oxidation/reduction of CMC, however, carboxymethyl cellulases attack specifically CMC. Moreover, our knowledge on electrochemically active bacteria is inadequate. Various cellulose degrading bacteria have been isolated so far for their higher cellulase activity. Pure bacterial cultures and co-cultures have been extensively used in degrading the CMC for power and electricity generation. CMC concentration and the effect of different substitution factors also play an important role in voltage generation. Different ways to make enzymatic electrode for current production using CMC fed reactor were also discussed in this study. This review gives an overview about the current developments of CMC being used as substrate in MFCs and to encourage further investigation towards the development of efficient processes for improved bioelectricity production in MFCs Keywords; CMC, microorganism, enzymatic electrode, cellulase enzyme and microbial fuel cell (MFC)
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