Effect of Carbon to Nitrogen Ratio in Anaerobic Digestion of Sugarcane Industry Waste
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Added on Β 2023/06/07
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This presentation discusses the importance of carbon to nitrogen ratio in anaerobic digestion of sugarcane industry waste. It covers the literature review, aim and objective, materials and methods, results, summary, and recommendations for further research. The presentation suggests that adjusting the C/N ratio can significantly increase the methane yield potential of sugarcane bagasse. The optimum C/N ratio for untreated and pre-treated bagasse was found to be 35:1 and 25:1 respectively.
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EFFECT OF CARBON TO NITROGEN RATIO IN ANAEROBIC DIGESTION OF SUGRACANE INDUSRTY WASTE
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CONTENTS β’Introduction β’Literature review β’Aim and Objective β’Material and Method β’Results β’Summary and Recommendation β’Acknowledgement
INTRODUCTION β’Bagasse production β’Global Production in 2013-14 β’179.68 Mt β’Australia production β’In that, how much is bagasse is produced β’Brazil is the leading producer β’India follows closely β’The higher the production of sugar by a country the higher the quantity of bagasse β’How this bagasse is treated β’Used as a fuel β’Manufacture of tableware and dinner ware β’Manufacture of pulp, paper, board and feed β’Need of Anaerobic digestion
LITERATURE REVIEW β’Anaerobic digestion β’A series of biological process where microorganism break down biodegradable material in the absence of oxygen β’Biogas is one of the end products β’Biogas is used in producing electricity β’Advantages as a Renewable Energy Source β’Simple β’Cheap β’Production is 24/7
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LITERATURE REVIEW β’Factors for AD β’pH β’Temperature β’Food to microorganism ratio (SIR) β’Type of substrate β’Retention time β’C/N ratio and trace nutrients: High C/N ratio increases digestion producing more biogas AD Temperat ure pH Substrate s OLR HRT C/N ratio
LITERATURE REVIEW β’Factors for AD β’C/N ratio and trace nutrients β’Importance of C/N ratio in AD process β’Influences the metabolic process of the bacteria responsible for digestion β’If high C/N ratio:High production of biogas β’If low C/N ratio:Low production of biogas β’What is the optimum ratio from literature. β’Optimum ratio of C/N is 30:1 β’Different agriculture residue C/N ratio β’24:1 for desired composition of crop residue β’How it can be maintained at optimum ratio β’By feeding the additional substrates into the digester to make up for the missing parts
Aim & Objective οΆAim β’Find out which C/N ratio is best for sugarcane bagasse (both untreated and pre-treated) in Anaerobic digestion οΆObjective β’Find out which C/N ratio is best for sugarcane bagasse (both untreated and pre-treated) in Anaerobic digestion
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MATERIALS AND METHOD β’Inoculum: β’Substrate used β’Bagasse (untreated) β’Pre-treatment: 2.5% dilute H2SO4followed by steam pre- treatment at 130Β°C for 5 minutes β’Experimental setup β’BMP test β’ISR β’Temperature β’pH β’C/N ratio (15,20,25,30,35,40) β’3 Molar Urea MaterialsTS (g/kg)VS (g/kg)C/N ratio Untreated Bagasse930.3807.7164.7 Pre-treated Bagasse510.6470.4200.4 Inoculum26.719.95.9
MATERIALS AND METHOD β’Sampling and Analysis β’Bottle β’Syringe β’Manometer β’GC β’Biogas composition β’Biogas production: β’Ideal gas equation β’Methane production β’Methane yield (methane produced by gVS added) β’Kinetics (1storder kinetic equitation)
RESULTSβ’Effect of different C/N ratio in methane yield. 0 50 100 150 200 250 15:120:125:130:135:140:1Control Cumulative Yield (m3-CH4/ton-VSadded Untreated Bagasse 1.34 4.26 2.162.33 9.27 3.27 % increase/decrease from the control Untr. Bagasse (Control =176.26L CH4/kg-VSfed) 0 50 100 150 200 250 15:120:125:130:135:140:1Control
SUMMARY β’Control in both untreated and pre-treated bagasse in the BMP test was giving 176 and 209 L-CH4/kg-Vsadded respectively β’Untreated bagasse β 35:1 β 9.3% increase from control β’Pre-treated Bagasse- 25:1 β 3.3% increase from control β’Influence of adjusting C/N ratio for sugarcane bagasse in AD process was observed. RECOMMENDATAION β’Co-digestion with nitrogen rich source to verify the result. β’Lab βscale reactor (CSTR) for understanding the further parameters β’Effect of other pre-treatment and adjusting C/N need to be tested
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ACKNOWLEDGEMENTS β’Thanks my lecturer who dedicated a lot of the quality time and perseverance towards this assignment β’Thanks to colleagues for the input
References Sawatdeenarunat, C., Surendra, K.C., Takara, D., Oechsner, H. and Khanal, S.K., 2015. Anaerobic digestion of lignocellulosic biomass: challenges and opportunities.Bioresource Technology,178, pp.178-186 Talha, Z., Ding, W., Mehryar, E., Hassan, M. and Bi, J., 2016. Alkaline pretreatment of sugarcane bagasse and filter mud codigested to improve biomethane production.BioMed research international,2016 Mehryar, E., Ding, W., Hemmat, A., Talha, Z., Hassan, M., Mamat, T. and Hei, K., 2017. Anaerobic Co-Digestion of Oil Refinery Wastewater with Bagasse; Evaluating and Modeling by Neural Network Algorithms and Mathematical Equations.BioResources,12(4), pp.7325-7340 Anjum, M., Khalid, A., Mahmood, T. and Aziz, I., 2016. Anaerobic co- digestion of catering waste with partially pretreated lignocellulosic crop residues.Journal of Cleaner Production,117, pp.56-63.
Thank youβ¦
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