1. Dynamic Modeling of a Batch Bioreactor for Trans-esterification of Waste Vegetable Oil Progress Report Presentation Nabeel A. Adeyemi Ph D (Engineering) G0828727 Supervisors: Prof AKM Mohiuddin Assoc Prof Dr Tariq Jameel 1 st April 2010
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16. Result-Kinetics Table 2. Fatty Acid Profile using GC-MS Fatty acid profile was obtained using a GC-MS Agilent 7683 automatic sampler with automated split injection system on a DB-Wax column. Sample preparation method was according to [2] Source of WVO IIUM (Gombak campus) caferia between June-December 2009 Titrimetry FFA - 1.11- 3.35% 0.9002 ARACHIDIC NA LINOLENIC 26.4377 LINOLEIC 32.4711 OLEIC 5.690 STEARIC 1.18117 PALMTIOLEIC 31.9001 PALMITIC 1.59095 MYRISTIC 0.7279 LAURIC % FATTY ACID
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18. Figure 2: Fatty acid profile during Transesterification WVO at 55°C using a single Rushton Impeller with bottom clearance 15mm at 600 rpm Palmitic Linoleic Oleic Result (Cont’d)
19. Figure 3: Fatty acid profile during Transesterification WVO at 60°C using a single Rushton Impeller with tank bottom clearance 15mm at 600 rpm Palmitic Linoleic Oleic Result (Cont’d)
20. Figure 4: Fatty acid profile during Transesterification WVO at 70°C using a single Rushton Impeller with tank bottom clearance 15mm at 600 rpm Palmitic Linoleic Oleic Result (Cont’d)
21. Table 3: Stirrer reaction configuration Results-hydrodynamic effect of impeller / baffle using COMSOL 0.23 T=30mm Impeller Diameter, D 48mm Total Liquid Height , L 130mm Tank diameter, T 150mm Height, H 0. 11T=15mm 0.15T=20mm 0.19T=25mm 0.23T=30mm 0.27 T=35mm impeller bottom clearance, C 600 rpm (Re=D 2 N ρ / μ ) turbulent Impeller speed
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24. Figure 5a: axial velocity profile present work Figure 5b: axial velocity profile of experimentally validated model Ochieng et al, 2008 [4] Result (Cont’d)
25. Figure 6: Axial velocity profile for unbaffled reactor above (x=0.35T) and below (x=0.19T) impeller at bottom distances, C (a) 0.11T (b) 0.17T (c) 0.23T Result (Cont’d)
26. Figure 7: Simulated mean tangential, radial and axial velocity at impeller bottom Clearance, C= 0.11 T , 0.15 T , 0.19 T , 0.23 T and 0. 27T for unbaffled Result (Cont’d)
27. Simulated mean turbulent kinetic and dissipation energy rate Figure 8b: mean turbulent kinetic at C =0.23 T Figure 8a: mean turbulent dissipation energy rate at C =0.23 T Result (Cont’d)
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31. Modified Work Plan CFD Modeling of the flow and reaction WVO analysis for FFA/ Transesterification Kinetics Hydrodynamic simulation in axi-symmetrical 2D/3D Start Model Is CFD Model comparable to lab result ? No No Yes Start CFD validation
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