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This study was carried out to investigate the biogas production obtained from anaerobic digestion of unripe plantain peels (PP) and the kinetics of the digestion process. 400 g of dried and shredded unripe plantain peels were mixed with 200 ml of water and put into 1 L digester and observed for biogas for hydraulic retention time (HRT) of 15 days by the method of downwards displacement. The cumulative biogas volume obtained after digestion was 285 ml. The COD removal efficiency of 72.5% was achieved. The kinetics of PP digestion was evaluated using first order, Monod, Contois and, Grau second-order models. Results showed that the kinetics of anaerobic digestion of PP followed the first-order model with a constant (K) of 0.095 day-1. Monod kinetics was evaluated and the maximum rate of substrate utilization (K), the half velocity constant (KS), endogenous decay coefficient (Kd), biomass growth yield (Y) and, maximum specific microorganism growth rate (µmax) obtained were 0.7615 day-1, 16.20 mg/l, 0.0047 day-1, 0.0112 mgVSS mgCOD-1 and, 0.009 day-1 respectively. These results revealed that inoculation would be required to increase the rate and volume of biogas production. Both first-order and Monod models gave a high coefficient of determination indicating that first order and Monod models can be used to model the digestion of PP. Contois model gave values of µmax and β as 0.011 day-1 and 0.644 mgCOD mgVSS-1 respectively. The result obtained has shown that the digestion of PP did not follow second-order kinetics.
Meintjes MM. Fermentation coupled with pervaporation: A kinetic study. Unpublished masters’ thesis, school of chemical and minerals engineering, North-West University, Potchefstroom Campus. 2011. Available:https://repository.nwu.ac.za/handle/10394/7283 Accessed 3 January 2020.
Puyate YT, Yelebe ZR. Estimation of monod kinetic parameters during aerobic digestion of biodegradable organic waste, part 2: Analysis based on microbial growth with effect of bioaugmentation. International Journal of Engineering Research and Applications. 2012;2(6):903-911.
Roopnarain A, Adeleke R. Current status, hurdles and future prospects of biogas digestion technology in Africa. Renewable and Sustainable Energy Reviews. 2017; 67:1162-1179.
Mshandete AM, Parawira W. Biogas technology research in selected sub-saharan African countries: A review. African Journal of Biotechnology. 2009; 8(2):116-125.
Longjan GG, Dehouche Z. Nutrient characterisation and bioenergy potential of common Nigerian food wastes. Waste Management & Research. 2018;36(5):426 –435.
Meegoda JN, Li B, Patel K, Wang, LB. A review of the processes, parameters, and optimization of anaerobic digestion. International Journal of Environmental Research and Public Health. 2018; 15(224):1-16.
Pham, CH, Triolo, JM, Cu TTT, L. Pedersen, L, S. G. Sommer, SG. Validation and recommendation of methods to measure biogas production potential of animal manure. Asian-Australasian Journal of Animal Sciences. 2013;26(6):864-873. Available:http://dx.doi.org/10.5713/ajas.2012.12623.
Darwin MI, Fazil A. Performance and kinetic study of the anaerobic co-digestion of cocoa husk and digested cow manure with high organic loading rate. INMATEH: Agricultural Engineering 2018;55(2):131-140.
APHA. 2540 Solids: Total suspended solids dried at 103-105 oC, method 2540 D, Standard methods for the Examination of water and wastewater, American public health Association, Physical and aggregate properties. 2000;61. DOI: 10.2105/SMWW.2882.030
APHA. Standard Methods for the Examination of Water and Wastewater, 19th edition. APHA, AWWA, WEF/1995. APHA Publication; 1995.
Khan MT, Brule M, Maurer C, Argyropoulos D, Muller J, Oechsner H. Batch anaerobic digestion of banana waste-energy potential and modelling of methane production kinetics. AgricEngInt: CIGR Journal of Open Access. 2016;18(1): 110-128.
Emembolu LN, Nwabanne JT, Onu CE. Date removed Kinetic modeling of anaerobic digestion of restaurant waste water. British Journal of Applied Science & Technology. 2017;21(4):1-12.
Nwabanne JT, Okoye AC, Ezedinma HC. Kinetics of anaerobic digestion of palm oil mill effluent. Canadian Journal of Pure & Applied Sciences. 2012;6(1):1877-1881.
Chang R. Enzyme Kinetics (Chapter 10). In Physical Chemistry for the Biosciences, Sausalito (CA): University Science Books. 2005;363-371.
Bhunia P, Ghangrekar M. Analysis, evaluation, and optimization of kinetic parameters for performance appraisal and design of UASB reactors. Bioresour. Technol. 2008;99(7):2132-2140.
Haydar S, Aziz JA. Kinetic coefficients for the biological treatment of tannery wastewater using activated sludge process. Pak. J. Engg. & Appl. Sci. 2009; 5:39-43.
Mardani S, Mirbagheri A, Amin MM, Ghasemian M. Determination of biokinetic coefficients for activated sludge processes on municipal wastewater. Iran. J. Environ. Health. Sci. Eng. 2011;8(1):25-34.
Nweke CN, Nwabanne JT. Continuous process design model simulation for the anaerobic digestion of vegetable oil wastewater. American Journal of Environmental Protection. 2014;3(5):209-216.
Nor Faekah I, Fatihah S, Mohamed ZS. Kinetic evaluation of a partially packed upflow anaerobic fixed film reactor treating low-strength synthetic rubber wastewater. Helion. 2020;6:1-7.
Jijai S, Siripatana C, O-Thong S, Ismail N. Kinetic models for prediction of COD effluent from upflow anaerobic sludge blanket (UASB) reactor for cannery seafood wastewater treatment. Jurnal Teknologi. 2016;78(5-6):93-99.
Isik M, Sponza DT. (2005) Substrate removal kinetics in an upflow anaerobic sludge blanket reactor decolorizing simulated textile wastewater. Process Biochemistry. 2005;40:1189-1198.
Mekonnen A, Leta S, Njau KN. Kinetic analysis of anaerobic sequencing batch reactor for the treatment of tannery wastewater. African Journal of Environmental Science and Technology. 2017;11(6): 339-348.
Patinvoh RJ, Osadolor OA, Chandolias K, Horvath IS, Taherzadeh, MJ. Innovation pretreatment strategies for biogas production. Bioresources Technology. 2016. Available::https://dx.doi.org/10.1016/j.biortech.2016.11.083
Abu-Reesh IM. Kinetics of anaerobic digestion of labaneh whey in a batch reactor. African Journal of Biotechnology. 2014;13(16):1745-1755.
Juel MAI, Syed SA, Dey TK. Assessment of kinetic coefficients for chrome tannery wastewater treatment by activated sludge system. Iranica Journal of Energy and Environment. 2017;8(1):56- 60.
Selvabharathi G, Anbarasi K, Ravi SR, Dhanaraja D. Treatment of tannery wastewater by activated sludge process. Elixir Renewable Energy. 2017;102:44280-44285.
Abdurahman NH, Rosli YM, Azhari NH. Ultrasonic membrane anaerobic system (UMAS) applications in treating slaughterhouse wastewater. Australian Journal of Basic and Applied Sciences. 2015;9(31):79-89.
Sumantri I, Budiyono B, Purwanto P. Kinetic study of anaerobic digestion of ketchup industry wastewater in a three-stages anaerobic baffled reactor (ABR). Bulletin of Chemical Reaction Engineering & Catalysis. 2019;14(2):326-335.