ABSTRACT
Biogas obtained by anaerobic digestion process from various organic fractions of waste is increasingly used as a renewable energy sources for the generation of electricity and heat. The quantity of biogas produced by anaerobic digestion depends on many factors: types and characteristics of organic waste, elemental composition of waste, C/N ratio, pH value, inhibitors, retention time, content of nutrients, etc. In addition to the selection of parameters that influence the process of anaerobic digestion, biogas yield can also be influenced by choosing the optimal combination and ratio of organic fractions of waste. In this paper, an analysis of the influential parameters in the process of anaerobic digestion was per-formed on biogas yields and an overview of the essential characteristics of waste (elementary composition, C/N ratio, lignin content, etc.) for different fractions of organic waste (organic municipal waste, various types of waste of animal origin, as well as agricultural waste). In order to choose the optimal mixing ratio of different fractions of organic waste for maximum biogas yield, a mathematical model has been developed using the multi-criteria optimization method. The boundary conditions set for the multi-criteria optimization was the C/N ratio in the range of 20 to 30 and the minimum content of the lignin in the substrate. The application of the developed model was carried out on the case study of the city of Nis, and the optimal mix of different types of organic waste was determined, as well as the optimal amount of each waste fraction and biogas yield. [Project of the Serbian Ministry of Education, Science and Technological Development, Grant no. III 33051]
KEYWORDS
PAPER SUBMITTED: 2018-04-18
PAPER REVISED: 2018-09-03
PAPER ACCEPTED: 2018-09-12
PUBLISHED ONLINE: 2019-01-19
THERMAL SCIENCE YEAR
2018, VOLUME
22, ISSUE
Supplement 5, PAGES [S1525 - S1534]
- Zhang, Y., et al., Co-Digestion of Source Segregated Domestic Food Waste to Improve Process Stabil-ity, Bioresearch Technology, 114 (2012), June, pp. 168-178
- Mahar, R. B., Assessment of Environmentally Sound Technologies (ESTS) for Waste Agricultural Bio-mass (WAB) in District Sanghar, Pakistan. UNEP project report on Converting Waste Agricultural Bio-mass into Fuel/Resource, Nairobi, Kenya, 2010
- Lu, F., Lignin: Structural Analysis, Applications in Biomaterials and Ecological Significance
- Labatut, R. A., et al., Biochemical Methane Potential and Biodegradability of Complex Organic Sub-strates, Bioresearch Technology, 102 (2011), 3, pp. 2255-2264
- Triolo, J. M., et al., Biochemical Methane Potential and Anaerobic Biodegradability of Non-Herbaceous and Herbaceous Phytomass in Biogas Production, Bioresearch Technology, 125 (2012), Dec., pp. 226-232
- Tanimu, M., et al., Effects of Feedstock Carbon to Nitrogen Ratio and Organic Loading on Foaming Po-tential in Mesophilic Food Waste Anaerobic Digestion, Applied Microbiology and Biotechnology, 99 (2015), 10, pp. 4509-5420
- Li, Y., et al., Effects of Thermal Pretreatment on the Biomethane Yield and Hydrolysis Rate of Kitchen Waste, Applied Energy, 172 (2016), June, pp. 47-58
- Muvhiiwa, R., et al., Effect of Temperature and pH on Biogas Production from Cow Dung and Dog Fae-ces, Africa Insight, 45 (2016), 4, pp. 167-181
- Vesilind, P. A. Wastewater Treatment Plant Design, 4th ed., IWA Publishing and the Water Environment Federation, London and Alexandria, Va, USA, 1998
- Sahito, A., et al., Optimization of Organic Loading Rate and Hydraulic Retention Time for Maximum Production of Methane through Anaerobic Co-Digestion of Canola Straw and Buffalo Dung. JAPS: Journal of Animal & Plant Sciences, 26 (2016), 2, pp. 373-381
- Rahman, M., et al., Optimal Ratio for Anaerobic Co-Digestion of Poultry Droppings and Lignocellulo-sic-Rich Substrates for Enhanced Biogas Production, Energy for Sustainable Development, 39 (2017), Aug., pp. 59-66
- Lalit Salunkhe, Prof. Archana Paranjpe, Optimization of Biogas Production from Co-Digestion of MSW, With Cow Manure & Poultry Waste, International Journal of Engineering Technology & Management Research, 3 (2015), 1, pp. ???
- Sajeena Beevi, B., et al., Optimization of Process Parameters Affecting Biogas Production from Organic Fraction of Municipal Solid Waste via Anaerobic Digestion, International Journal of Environmental, Chemical, Ecological, Geological and Geophysical Engineering, 8 (2014), 1, pp. 43-48
- Zareei, S., Khodaei, J., Modeling and Optimization of Biogas Production from Cow Manure and Maize Straw Using an Adaptive Neuro-Fuzzy Inference System, Renewable Energy, 114, Part B (2017), Dec., pp. 423-427
- Oloko-Oba, M., et al., Performance Evaluation of Three Different-Shaped Bio-Digesters for Biogas Pro-duction and Optimization by Artificial Neural Network Integrated with Genetic Algorithm, Sustainable Energy Technologies and Assessments, 26 (2017), Apr., pp. 116-124
- Liu, E., Liu, S., Process Optimization and Study of Biogas Fermentation with a Mixture of Duck Manure and Straw, Renewable and Sustainable Energy Reviews, 72 (2017), May, pp. 439-444
- Zelany, M., A Concept of Compromise Solutions and the Method of the Displaced Ideal, Computers & Operations Research, 1 (1974), 3-4, pp. 479-496
- Yu, P. L. A Class of Solutions for Group Decision Problems, Management Science, 19 (1973), 8, pp. 936-946
- Risberg, K., et al., Comparative Characterization of Digestate versus Pig Slurry and Cow Manure - Chemical Composition and Effects on Soil Microbial Activity, Waste Management, 61 (2017), Mar., pp. 529-538
- ***, PUC "Medijana". Official web site: <www.jkpmediana.rs/>
- ***, City of Nis. Official web site: <www.ni.rs>
- ***, Republic Institute for Statistics of Serbia. Population: <www.stat.gov.rs/WebSite/Public/PageView.aspx?pKey=163>
- ***, Republic Institute for Statistics of Serbia. Census of Agriculture: <www.stat. www.popispoljoprivrede.stat.rs/?p=4763>
