Abu Bakar, MimiPasco, NeilGooneratne, Sarojith R.Kim, B. H.2018-09-202016-082016-04-22Abu Bakar, M.H., Pasco, N.F., Gooneratne, R., & Kim, B.H. (2016). Effect of long time oxygen exposure on power generation of microbial fuel cell with enriched mixed culture. Malaysian Journal of Analytical Sciences, 20(4), 913-922. doi:10.17576/mjas-2016-2004-271394-2506https://hdl.handle.net/10182/10254In this study, we are interested in the effect of long time exposure of the microbial fuel cells (MFCs) to air on the electrochemical performance. Here, MFCs enriched using an effluent from a MFC operated for about eight months. After 30 days, the condition of these systems was reversed from aerobic to anaerobic and vice versa, and their effects were observed for 11 days. The results show that for anaerobic MFCs, power generation was reduced when the anodes were exposed to dissolved oxygen of 7.5 ppm. The long exposure of anodic biofilm to air led to poor electrochemical performance. The power generation recovered fully when air supply stopped entering the anode compartment with a reduction of internal resistance up to 53%. The study was able to show that mixed facultative microorganism able to strive through the aerobic condition for about a month at 7.5 ppm oxygen or less. The anaerobic condition was able to turn these microbes into exoelectrogen, producing considerable power in relative to their aerobic state.913-922en© 2018 The Malaysian Analytical Sciences Societymicrobial fuel cellaerobicoxygen exposurewastewaterJournal Article10.17576/mjas-2016-2004-27ANZSRC::090699 Electrical and Electronic Engineering not elsewhere classifiedANZSRC::09 EngineeringANZSRC::090405 Non-automotive Combustion and Fuel Engineering (incl. Alternative/Renewable Fuels)ANZSRC::090409 Wastewater Treatment Processes