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International Journal of Power and Energy Research
IJPER > Volume 5, Number 1, April 2021

Effect of Stirring Intervals on Biogas Production from Cow Dung and Maize Silage Mix Ratio

Download PDF  (533.3 KB)PP. 1-11,  Pub. Date:May 7, 2021
DOI: 10.22606/ijper.2021.51001

Author(s)
Monyluak M.Y. Chol, Nicasio M. Muchuka, Daudi M. Nyaanga
Affiliation(s)
School of Natural Resources & Environmental Studies, Department of Agriculture, University of Juba, P.O. Box 82, Juba, South Sudan
Department of Electrical and Control Engineering, Egerton University, P.O. Box 536 – 20115, Egerton, Kenya
Department of Agricultural Engineering, Egerton University, P.O. Box 536 – 20115, Egerton, Kenya
Abstract
Most biogas plants’ poor performance may be attributed to inadequate stirring strategy. The study evaluated the effect of stirring intervals on biogas production from cow dung and maize silage mixture (at mixed ratio 3:1) digested in a 0.15m3 laboratory digester at 30℃. SIEMENS LOGO PLC and ATV12HU15M2 Drive automatically controlled the stirring of 100 rpm for 3minutes at intervals of 1hour, 2hours, 6hours and 12hours with no stirring as control. The stirring intervals showed a significant effect on biogas production (P≤0.05) with 6hours and 12hours increased biogas by 3.11% and 1.48%, and the methane increase of 8.77% and 1.75%, respectively. The 2hours and 1hour reduced biogas by 26.5% and 39.35%, and methane decreased by 3.52% and 15.79%, respectively compared to control (implying that the frequent stirring is not good for biogas). The stirring interval of 6hours is thus recommended for 0.15m3 laboratory batch reactor of cow dung and maize silage.
Keywords
anaerobic digestion, biogas production, optimization, stirring intervals, maize silage.
References
  • [1]  Nsair A, Onen Cinar S, Alassali A, Abu Qdais H, Kuchta K. Operational parameters of biogas plants: A review and evaluation study. Energies. 2020; 13 (15):3761.
  • [2]  Hren R, Petrovic A, Cucek L, Simonic M. Determination of Various Parameters during Thermal and Biological Pre-treatment of Waste Materials. Energies. 2020; 13 (9):2262.
  • [3]  Molino A, Nanna F, Ding Y, Bikson B, Braccio G. Bio-methane. Production by anaerobic digestion of organic waste. Fuel. 2013; 103: 1003-1009.
  • [4]  Nallamothu RB, Teferra A, Rao BA. Biogas purification, compression and bottling. Global Journal of Engineering, Design and Technology. 2013; 2 (6):34-8.
  • [5]  Hopfner-Sixt K, Amon T. Monitoring of agricultural biogas plants in Austria—Mixing technology and specific values of essential process parameters. In Proceedings of the 15th European Biomass Conference and Exhibition, Berlin, Germany 2007 (Vol. 711, p. 17181728).
  • [6]  Adekunle KF, Okolie J A. A review of the biochemical process of anaerobic digestion. Advances in Bioscience and Biotechnology. 2015; 6 (03):205-212.
  • [7]  Zielinski M, Kisielewska M, Debowski M, Elbruda K. Effects of nutrients supplementation on enhanced biogas production from maize silage and cattle slurry mixture. Water, Air, and Soil Pollution. 2019; 230 (6):117.
  • [8]  Lemmer A, Naegele HJ, Sondermann J. How efficient are agitators in biogas digesters? Determination of the efficiency of submersible motor mixers and incline agitators by measuring nutrient distribution in full-scale agricultural biogas digesters. Energies. 2013; 6(12): 6255-6273.
  • [9]  Demollari E, Jojic E, Vorpsi V, Dodona E, Sallaku E. Temperature and Stirring Effect of Biogas Production from Two Different Systems. American Journal of Energy Engineering. 2017; 5 (2): 6-10.
  • [10]  Kaparaju P, Buendia I, Ellegaard L, Angelidakia I. Effects of mixing on methane production during thermophilic anaerobic digestion of manure: Lab-scale and pilot-scale studies. Bioresource technology. 2008; 99 (11): 4919-4928.
  • [11]  Del Real Olvera J, Lopez-Lopez A. Biogas production from anaerobic treatment of agro-industrial wastewater. Biogas. Rijeka: In Tech. 2012; 14: 91-112.
  • [12]  Karim K, Hoffmann R, Klasson T, Al-Dahhan MH. Anaerobic digestion of animal waste: Waste strength versus the impact of mixing. Bioresource technology. 2005; 96 (16): 1771-81.
  • [13]  Lin KC, Pearce ME. Effects of mixing on anaerobic treatment of potato-processing wastewater. Canadian journal of civil engineering. 1991; 18 (3): 504-514.
  • [14]  Karim K, Klasson KT, Hoffmann R, Drescher SR, DePaoli DW, Al-Dahhan MH. Anaerobic digestion of animal waste: Effect of mixing. Bioresource technology. 2005; 96 (14):1607-1612.
  • [15]  Keanoi N, Hussaro K, Teekasap S. Effect of with/without agitation of agricultural waste on biogas production from anaerobic co-digestion-a small scale. American Journal of Environmental Sciences. 2014; 10 (1): 74-85.
  • [16]  El-Bakhshwan M, El-Ghafar A, Zayed M, El-Shazly A. Effect of mechanical stirring on biogas production efficiency in large scale digesters. Journal of Soil Sciences and Agricultural Engineering. 2015; 6 (1): 47-63.
  • [17]  Nandi R, Saha CK, Alam MM. Effect of Mixing on Biogas Production from Cow dung. Eco-friendly Agriculture Journal. 2017; 10: 7-13.
  • [18]  Ong HK, Greenfield PF, Pullammanappallil PC. Effect of mixing on biomethanation of cattle-manure slurry. Environmental technology. 2002; 23 (10):1081-1090.
  • [19]  Hoffmann RA, Garcia ML, Veskivar M, Karim K, Al‐Dahhan MH, Angenent LT. Effect of shear on performance and microbial ecology of continuously stirred anaerobic digesters treating animal manure. Biotechnology and bioengineering. 2008; 1100 (1):38-48.
  • [20]  Stafford DA. The effects of mixing and volatile fatty acid concentrations on anaerobic digester performance. Biomass. 1982; 2 (1):43-55.
  • [21]  Herrmann C, Prochnow A, Heiermann M, Idler C. Particle size reduction during harvesting of crop feedstock for biogas production II: effects on energy balance, greenhouse gas emissions and profitability. Bioenergy Research. 2012; 5 (4): 937-948.
  • [22]  Ayhan A, Liu Q, Al?bas K, Unal H. Biogas production from maize silage and dairy cattle manure. Journal of Animal and Veterinary Advances. 2013; 12 (5): 553-556.
  • [23]  Monyluak M.Y. Chol. MSc [Unpublished thesis]: Effect of maize silage and cow dung mix ratios, temperature and stirring intervals on biogas production. Egerton University, Nakuru: 2020.
  • [24]  EPA (Environmental Protection Agency). Method 1684 Total, Fixed and Volatile Solids in Water, Solids, and Biosolids. 2001; ( 4303 ): 1–13.
  • [25]  Anderson JM, Ingram JS. A handbook of methods. CAB International, Wallingford, Oxfordshire. 1993; 221: 62- 65.
  • [26]  Walinga I, Van Vark W, Houba VJ, Van der Lee JJ. Soil and plant analysis. Part 7. 1989; 7: 13-16.
  • [27]  Mudhoo A, Moorateeah PR, Mohee R. Effects of Microwave Heating on Biogas Production, Chemical Oxygen Demand and Volatile Solids. Int. J. Environ. Chem. Ecol. Geol. Geophy. Eng. 2012; 6 (9): 609-614.
  • [28]  Masinde, B. H., Nyaanga, D. M., Njue, M. R., Matofari, J. W. Effect of Total Solids on Biogas Production in a Fixed Dome Laboratory Digester under Mesophilic Temperature. Annals of Advanced Agricultural Sciences. 2020; 4: 26-33.
  • [29]  Hodgkinson J, Pride RD. Methane-specific gas detectors: the effect of natural gas composition. Measurement Science and Technology. 2010; 21 (10): 105103.
  • [30]  Borhan MS. Dry anaerobic digestion of fresh feed yard manure: a case study in a laboratory setting. International Journal of Emerging Sciences. 2012; 2 (4): 509-525.
  • [31]  Sulaiman A, Hassan MA, Shirai Y, Abd-Aziz S, Tabatabaei M, Busu Z, Yacob S. The Effect of Mixing on Methane Production in a Semi-commercial Closed Digester Tank Treating Palm Oil Mill Effluent. Australian Journal of Basic and Applied Sciences. 2009; 3 (3): 1577-1583.
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