TY - JOUR
T1 - Simultaneous Production of Bio-energy and Bio-treatment of Wastewater Using Photosynthetic Microbial Fuel Cell
T2 - Optimization and Kinetic Modeling Approach
AU - Nayak, Jagdeep Kumar
AU - Mishra, Saurabh
AU - Amit,
AU - Ghosh, Uttam Kumar
N1 - Publisher Copyright:
© 2022, The Author(s), under exclusive licence to Springer Nature B.V.
PY - 2023/1
Y1 - 2023/1
N2 - Photosynthetic microbial fuel cell (PMFC) is a promising technology for simultaneous treatment of wastewater, bioelectricity generation, and algal biomass production in single stage. The performance of PMFC depends on the activity of algae and bacteria, which are governed by the rate limiting operational parameters (like initial chemical oxygen demand (COD) concentration, nitrate concentration, amount of yeast extract (YE), and hydraulic retention time (HRT)). The present study aims to investigate the effect of these operational parameters on COD and nitrate removal efficiency along with voltage generation from PMFC. These operational parameters are optimized using response surface methodology for effective system function. The resultant data analysis of variance reveals that the parameters HRT and YE has positive integrative effect (with estimated coefficient value of 5.92) on nitrate removal efficiency, while negative integrative effect (− 1.97) on COD removal efficiency. The maximum COD and nitrate removal of 86.35 ± 0.4% and 75.85 ± 0.4% are obtained from the separate optimized model validated experiments for COD and nitrate removal, respectively that exhibit the satisfactory correlation with model-predicted-response. Meanwhile, the maximum voltage of ~ 790 ± 0.4 mV and biomass of ~ 0.80 ± 0.05 g L−1 for biofuel-feed-stock is obtained during the same experiments. The response data obtained during kinetic study of COD and nitrate removal are analyzed using first order model that exhibits K1 value of 1.127 day−1 for COD removal and 1.882 day−1 for nitrate removal. The same response data are analyzed using Grau model that exhibits K2 value of 3.67 day−1 for COD removal and 31.25 day−1 for nitrate removal. The optimized process demonstrated in this study would be useful for simultaneous production bio-energy and efficient wastewater treatment using PMFC. Graphical Abstract: [Figure not available: see fulltext.]
AB - Photosynthetic microbial fuel cell (PMFC) is a promising technology for simultaneous treatment of wastewater, bioelectricity generation, and algal biomass production in single stage. The performance of PMFC depends on the activity of algae and bacteria, which are governed by the rate limiting operational parameters (like initial chemical oxygen demand (COD) concentration, nitrate concentration, amount of yeast extract (YE), and hydraulic retention time (HRT)). The present study aims to investigate the effect of these operational parameters on COD and nitrate removal efficiency along with voltage generation from PMFC. These operational parameters are optimized using response surface methodology for effective system function. The resultant data analysis of variance reveals that the parameters HRT and YE has positive integrative effect (with estimated coefficient value of 5.92) on nitrate removal efficiency, while negative integrative effect (− 1.97) on COD removal efficiency. The maximum COD and nitrate removal of 86.35 ± 0.4% and 75.85 ± 0.4% are obtained from the separate optimized model validated experiments for COD and nitrate removal, respectively that exhibit the satisfactory correlation with model-predicted-response. Meanwhile, the maximum voltage of ~ 790 ± 0.4 mV and biomass of ~ 0.80 ± 0.05 g L−1 for biofuel-feed-stock is obtained during the same experiments. The response data obtained during kinetic study of COD and nitrate removal are analyzed using first order model that exhibits K1 value of 1.127 day−1 for COD removal and 1.882 day−1 for nitrate removal. The same response data are analyzed using Grau model that exhibits K2 value of 3.67 day−1 for COD removal and 31.25 day−1 for nitrate removal. The optimized process demonstrated in this study would be useful for simultaneous production bio-energy and efficient wastewater treatment using PMFC. Graphical Abstract: [Figure not available: see fulltext.]
KW - Biomass production
KW - Kinetic modeling
KW - Photosynthetic microbial fuel cell
KW - Response surface methodology
KW - Voltage generation
UR - http://www.scopus.com/inward/record.url?scp=85133491616&partnerID=8YFLogxK
U2 - 10.1007/s12649-022-01836-4
DO - 10.1007/s12649-022-01836-4
M3 - Article
AN - SCOPUS:85133491616
SN - 1877-2641
VL - 14
SP - 69
EP - 84
JO - Waste and Biomass Valorization
JF - Waste and Biomass Valorization
IS - 1
ER -