This Anaerobic Digestion of Sisal decortication residue (SDR) from sisal decorication unit at Hale biogas plant in Tanga (Tanzania) is presented. The study was done to address the challenges facing Katani limited at Hale biogas plant. This plant was built as pilot before building other biogas plants. These challenges were like high retention time of substrate which was SDR, low biogas productivity, high investment costs due to large tanks sizes and low plant availability. From the study, it was discovered that, when particle size was reduced biogas production increased, degradation of SDR also increased and no significant change in biogas composition. Increase in biogas yield of 30% and 129% were recorded for reduced SDR compared to raw size SDR digested at atmospheric condition and 40°C respectivelly. SDR degradation measured in TS and VS removal efficiency, showed increase in degradation of about 5% for the reduced particle size compared to raw size particle. The study concluded that SDR was good raw material for biogas production when 90% of the particles reduced to less than 2 mm. To maximize production, digestion must be conducted at high temperature around 40°C with constant monitoring and control of all para-meters. This will increase plant availability by increasing efficiency and life span of the pumps and stirrers.
Rajabu, Y. and Manyele, S. (2015) Performance Improvement for Sisal Waste Anaerobic Biodegradation by Digester Redesign and Feed Size Reduction. Engineering, 7, 553-566. doi: 10.4236/eng.2015.79051.
[1] Kowalczyk, A., Schwede, S., Gerber, M. and Span, R. (2011) Scale up of Laboratory Scale to Industrial Scale Biogas Plants. World Renewable Energy Congress, Bioenergy Technology, Linköping, 8-13 May 2011, Article No.: 007.
http://dx.doi.org/10.3384/ecp1105748
[2] Chynoweth, D.P., Owens, J.M. and Legrand, R. (2001) Renewable Methane from Anaerobic Digestion of Biomass. Renewable Energy, 22, 1-8.
http://dx.doi.org/10.1016/S0960-1481(00)00019-7
[3] Salum, A. and Hodes, G. (2009) Leveraging CDM to Scale-Up Sustainable Biogas Production from Sisal Waste. UNEP Risoe Centre (URC), National Laboratory for Sustainable Energy, Technical University of Denmark, Roskilde.
[4] Mshandete, A.B., Björnsson, L., Kivaisi, A.K., Rubindamayugi, M.S.T. and Mattiasson, B. (2005) Performance of a Sisal Fibre Fixed-Bed Anaerobic Digester for Biogas Production from Sisal Pulp Waste. Tanzania Journal of Science, 31, 41-51.
[5] Ayalon, O., Avnimelech, Y. and Shechter, M. (2001) Solid Waste Treatment as a High-Priority and Low Cost Alternative for Greenhouse Gas Mitigation. Environmental Management, 27, 697-704.
http://dx.doi.org/10.1007/s002670010180
[6] Deubleim, D. and Steinhauser, A. (2008) Biogas from Waste and Renewable Resources: An Introduction. Wiley-VCH Verlag GmbH and Co KGaA, Weinheim.
[7] Yadvika, S., Sreekrishnan, T., Kohli, S. and Rana, V. (2004) Enhancement of Biogas Production from Solid Substrates Using Different Techniques—A Review. Bioresource Technology, 95, 1-10.
http://dx.doi.org/10.1016/j.biortech.2004.02.010
[8] Wanasolo, W., Manyele, S.V. and Makunza, J. (2013) A Kinetic Study of Anaerobic Biodegradation of Food and Fruit Residues during Bigas Generation Using Initial Rate Method. Engineering, 5, 577-586.
http://dx.doi.org/10.4236/eng.2013.57070
[9] Yang, Y., Tsukahara, K., Yagishita, T. and Sawayama, S. (2004) Performance of a Fixed Bed Reactor Packed with Carbon Felt during Anaerobic of Cellulose. Bioresource Technology, 94, 197-201.
http://dx.doi.org/10.1016/j.biortech.2003.11.025
[10] Dichtl, N., Müller, J., Braunschweig, E.E., Günthert F.W. and Osswald, M.O. (1997) Waste Sludge Disintegration: A Recent Overview. Korrespondenz Abwasser, 44, 1726-1739 (in German).
[11] Li, Y.Y. and Noike, T. (1992) Upgrading of Anaerobic Digestion of Waste Activated Sludge by Thermal Pre-Treatment. Water Science and Technology, 26, 857-866.
[12] Tanaka, S., Kobayashi, T., Kamiyama, K. and Bildan, M.L.S. (1997) Effects of Thermochemical Pre-Treatment on the Anaerobic Digestion of Waste Activated Sludge. Water Science and Technology, 35, 209-215.
http://dx.doi.org/10.1016/S0273-1223(97)00169-8
[13] Weemaes, M. and Verstraete, W. (1998) Evaluation of Current Wet Sludge Disintegration Techniques. Journal of Chemical Technology and Biotechnology, 73, 83-92.
http://dx.doi.org/10.1002/(SICI)1097-4660(1998100)73:2<83::AID-JCTB932>3.0.CO;2-2
[14] Sharma, S.K., Mishra, I., Sharma, M. and Saini, J. (1988) Effect of Particle Size on Biogas Generation from Biomass Residues. Biomass, 17, 251-263.
http://dx.doi.org/10.1016/0144-4565(88)90107-2
[15] Moorhead, K. and Nordstedt, R. (1993) Batch Anaerobic Digestion of Water Hyacinth: Effects of Particle Size, Plant Nitrogen Content, and Inoculum Volume. Bioresource Technology, 44, 71-76.
http://dx.doi.org/10.1016/0960-8524(93)90211-S
[16] Mshandete, A., Kivaisi, A., Rubingamayugi, M. and Mattiasson, B. (2004) Anaerobic Batch Co-Digestion of Sisal Pulp and Fish Wastes. Bioresource Technology, 95, 19-24.
http://dx.doi.org/10.1016/j.biortech.2004.01.011
[17] Sinnott, R.K. (1999) Coulson and Richardson’s Chemical Engineering Volume 6, Chemical Engineering Design. Butterworth-Heineman, Oxford.
[18] APHA (1999) Standard Method for the Examination of Water and Wastewater. American Public Health Association, American Water Works Association, Water Environment Federation, Washington DC.
[19] Buchauer, K. (1998) A Comparison of Two Simple Titration Procedures to Determine Volatile Fatty Acids in Influents to Waste-Water and Sludge Treatment Processes. Water South Africa, 24, 49-56.
[20] Kivaisi, A.K. and Eliapenda, S. (1994) Pre-Treatment of Bagasse and Coconut Fibres for Enhanced Anaerobic Degradation by Rumen Microorganisms. Renewable Energy, 2, 791-795.
http://dx.doi.org/10.1016/0960-1481(94)90089-2
[21] Hills, D.J. and Nakamo, K. (1984) Effect of Particle Size on Anaerobic Digestion of Tomato Solid Wastes. Agricultural Wastes, 10, 285-295.
http://dx.doi.org/10.1016/0141-4607(84)90004-0
[22] Angelidaki, I. and Ahring, B.K. (2000) Methods for Increasing the Biogas Potential from the Recalcitrant Organic Matter Contained in Manure. Waste Science Technology, 3, 189-194.
[23] Linke, B. (2006) Kinetic Study of Thermophilic Anaerobic Digestion of Solid Wastes from Potato Processing. Biomass and Bioenergy, 30, 892-896.
http://dx.doi.org/10.1016/j.biombioe.2006.02.001
[24] Yusuf, M.O., Debora, A. and Ogheneruona, D.E. (2011) Ambient Temperature Kinetic Assessment of Biogas Production from Co-Digestion of Horse and Cow-Dung. Resource Agricultural Engineering, 57, 97-104.
[25] Eastman, J.A. and Ferguson, J.F. (1981) Solubilization of Particulate Organics Carbon during the Acid Phase of Anaerobic Digestion. Journal Water Pollution Control Federation, 53, 352-366.
[26] Gollakota, K.G. and Meher, K.K. (1988) Effect of Particle Size, Temperature, Loading Rate and Stirring on Biogas Production from Castor Cake. Biological Waste, 24, 243-249.