MODELING OF ANAEROBIC CO-DIGESTION OF PIG MANURE AND DOMESTIC ORGANIC WASTE
DOI:
https://doi.org/10.11113/jt.v78.8648Keywords:
Anaerobic co-digestion, biogas production, biogas modeling, wastewater-sludgeAbstract
The normal practice in Thailand is that the wastes from pig-farms and households are treated separately. Nutrient imbalance as well as other physico-chemical characteristics of each waste cause the anaerobic digestion process to work at suboptimal rates. This work is an attempt to describe the kinetics of anaerobic co-digestion of wastewater mixture from a pig-farm and domestic organic waste to understand the effect of their ratio on the biogas production efficiency in batch digesters which mimic a similar industrial practice. The batch experiments were carried out at three different temperatures (28 oC, 32oC and 35oC ), with and without initial pH adjustment (pH 7), and four levels of total solid (8%,12%,16% and 20% TS). It was found that the best operating condition was 35 oC, 16% TS and the pig-manure-to-domestic-waste ratio of 75:25. The modified Gompertz equation was used to estimate some Monod parameters and biomethane potential. Then modified two-substrate Monod equation was used to estimate the maximum specific biogas production rate (MBPR). It was also used to describe the microbial growth, substrate consumption and biogas production satisfactorily.Â
References
Hung-Wen Chang and Tso-Lun Wu. 1997. Numerical Solutions of Matrix Riccati Equation for Radiative Transport problems in a Plane-Parallel Geometry. Waves in Random Media. 7: 146-168.
Ahamed, A. & Ahring, B. K. 2011. Production Of Hydrocarbon Compounds By Endophytic Fungigliocladium Species Grown On Cellulose. Bioresource Technology. 102(20): 9718-22.
Gomex, X., Cueos, M. J., and Sanchez, M. E. 2006 Production of Hydrogen by Dark Fermentation of Municipal Solid Waste and Slaughterhouse Wast: A two-Phase Process. Journals of Power Sources. 157: 727-732.
Grady, R. M., Grange, R. W., Lau, K. S.; Maimone, M. M.; Nichol, M. C. Stull, J. T. and Sanes, J. R. 1999. Role For Alpha- Dystrobrevin In The Pathogensis Of Dystrophin-Dependent Muscular Dystrophies. Nat. Cell Biol. 1: 215-220.
Kim, M. Ahn, Y. H. and Speece R. E. 2002. Comparative Process Stability And Efficiency Of Anaerobic Digestion. Mesophilic Vs. Thermophilic. Wat. Res. 1-17.
Metcalf and Eddy. 2004. Wastewater Engineering: Treatment. Disposal and Reuse. 4th Edition. New York: McGrae-Hill.
Abdel-Hadi. M. 2008. A Simple Apparatus For Biogas Quality Determination. Misr J. Ag. Eng. 25(3): 1055-1066.
Biswanath Mahanty, Mohd. Zafar a., Man Jae Han b., Hung-Suck Park. 2013. Optimization Of Co-Digestion Of Various Industrial Sludges For Biogas Production And Sludge Treatment: Methane Production Potential Experiments And Modeling. Waste Management. 34: 1018-1024.
Nnabuchi, M. N. Akubuko, F. O, Augustine. C. & G. Z. Ugw 2012. Assessment of the Effect of Co-Digestion of Chicken Dropping and Cow Dung on Biogas Generation Global. Journal of Science Frontier Research Physics and Space Sciences. 12(7) Versions 1.0.
Monod J. 1949. The Growth of Bacterial Cultures. Annual Review of Microbiology. Colour-blind Users. British Telecommunications Engineering. 17(3): 291-295.
Downloads
Published
Issue
Section
License
Copyright of articles that appear in Jurnal Teknologi belongs exclusively to Penerbit Universiti Teknologi Malaysia (Penerbit UTM Press). This copyright covers the rights to reproduce the article, including reprints, electronic reproductions, or any other reproductions of similar nature.
