Microbial fuel cell data set

Published: 2 February 2021| Version 1 | DOI: 10.17632/gydpxvj8gp.1
Contributor:
Tegen Dagnew

Description

The experimental data set consists of data illustrates the effect of two different electron acceptors on the performance of voltage generation, power density, current density and COD removal efficiency of brewery waste. Pysico-chemical properties of the waste water used during the experiment (Table1) . Substrate feed (loading) (Table 2) and electron acceptor solution concentration (Table 3) used in the experiment. Fig1 illustrates the experimental Microbial fuel cell set up used during the experiment. Data presented in Fig.2. consists of, removal and columbic and Voltage generation as an electron acceptor of MFC used during the experiment with KMnO4 and K3[Fe (CN)6 as an electron acceptor at 0.4 M concentration, each sample has been measured with mean followed by standard deviation with three times (as provided in supplementary materials. Fig 3 and Fig 4 shows the effect of molar concentration(0.4&0.6M) as KMnO4 as an electron acceptor on voltage generation capacity of the MFC at different COD concentration (500mg/L,1000mg/L,1500mg/L,2000mg/L). The effect of molar concentration (0.4&0.6M) as 4K3[Fe(CN)6 as an electron acceptor on voltage generation capacity of the MFC at different COD concentration (500mg/L,1000mg/L,1500mg/L,2000mg/L) well illustrated in (Fig5 and Fig 6).Fig7(a) shows data recorded and estimated on current density against polarization and power density curves using KMno4 used as an electron acceptor and Fig7(b). demonstrates on current density against polarization and power density curves using K3[Fe (CN)6 used as an electron acceptor.

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Voltage generation and current density were measured using digital multimeter, the COD value was measured using HACH DR900 photometer based on American society for testing .1995. Standard test method for chemical oxygen demand (dichromate oxygen demand of water)[1]. Voltage generated in the microbial fuel cell system was recorded using the digital voltmeter at an interval of 12 hours for 20 days. The corresponding current generated, power outage, power density and current density was calculated using Eq. (1), (2), (3) and (4) according to Ohm’s law .The polarization curves were determined from the voltages and currents obtained which were measured by varying external resistors (5000, 4000, 3000, 2000, 1000, 400, 300, 200, 100, 40, 30, 20, 10 Ω). Based on each value, power density and current density were determined using equation (3) and (4). Then the polarization curve was drawn in terms of voltage versus current and power density curve was found from the plot of power density versus current density. From which the internal resistance of the microbial fuel cell was determined according to the method employed for polarization slope [2][3]. The removal efficiency of microbial fuel cell for each COD concentration of brewery wastewater was calculated using equation (5). The data has been analyzed with error plot using sigma plot version 14.0.