Mesophilic anaerobic co-digestion of poultry dropping and Carica papaya peels: Modelling and process parameter optimization study.
The study evaluated anaerobic co-digestion of poultry dropping and pawpaw peels and the optimization of important process parameters. The physic-chemical analyses of the substrates were done using standard methods after application of mechanical, thermal and chemical pre-treatments methods. Gas chromatography analysis revealed the gas composition to be within the range of 66-68% methane and 18-23% carbon dioxide. The study equally revealed that combination of the different pre-treatment methods enhanced enormous biogas yield from the digestion. Optimization of the generated biogas data were carried out using the Response Surface Methodology and the Artificial Neural Networks. The coefficient of determination (R(2)) for RSM (0.9181) was lower compare to that of ANN (0.9828). This shows that ANN model gives higher accuracy than RSM model for the current. Further usage of Carica papaya peels for biogas generation is advocated.
Biological Sciences Department, Landmark University, Nigeria. Electronic address: dahunsi.olatunde@lmu.edu.ng.
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Dahunsi
Biological Sciences Department, Covenant University, Nigeria. Electronic address: solomon.oranusi@covenantuniversity.edu.ng.
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Oranusi
All Saints University College of Medicine, Kingstown, Saint Vincent and the Grenadines.
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Owolabi
Chemical Engineering Department, Covenant University, Nigeria.
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Efeovbokhan
D000693:Anaerobiosis; D000818:Animals; D001419:Bacteria / Q000378:metabolism; D056804:Biofuels / Q000032:analysis; D029441:Carica / Q000737:chemistry; D005243:Feces / Q000737:chemistry; D005638:Fruit / Q000737:chemistry; D006863:Hydrogen-Ion Concentration; D008697:Methane / Q000032:analysis / Q000096:biosynthesis*; D016571:Neural Networks, Computer; D011200:Poultry
D056804:Biofuels; D008697:Methane
Biogas; Methane; Microorganisms; Optimization; Pawpaw; Pre-treatment