Kinetic Studies on Fermentative Production of Biofuel from Synthesis Gas Using Clostridium ljungdahlii
The intrinsic growth, substrate uptake, and product formation biokinetic parameters were obtained for the anaerobic bacterium, Clostridium ljungdahlii, grown on synthesis gas in various pressurized batch bioreactors. A dual-substrate growth kinetic model using Luong for CO and Monod for H2 was used...
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| Format: | Article |
| Language: | English |
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Wiley
2014-01-01
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| Series: | The Scientific World Journal |
| Online Access: | http://dx.doi.org/10.1155/2014/910590 |
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| author | Maedeh Mohammadi Abdul Rahman Mohamed Ghasem D. Najafpour Habibollah Younesi Mohamad Hekarl Uzir |
| author_facet | Maedeh Mohammadi Abdul Rahman Mohamed Ghasem D. Najafpour Habibollah Younesi Mohamad Hekarl Uzir |
| author_sort | Maedeh Mohammadi |
| collection | DOAJ |
| description | The intrinsic growth, substrate uptake, and product formation biokinetic parameters were obtained for the anaerobic bacterium, Clostridium ljungdahlii, grown on synthesis gas in various pressurized batch bioreactors. A dual-substrate growth kinetic model using Luong for CO and Monod for H2 was used to describe the growth kinetics of the bacterium on these substrates. The maximum specific growth rate (μmax = 0.195 h−1) and Monod constants for CO (Ks,CO = 0.855 atm) and H2 (Ks,H2 = 0.412 atm) were obtained. This model also accommodated the CO inhibitory effects on cell growth at high CO partial pressures, where no growth was apparent at high dissolved CO tensions (PCO∗>0.743 atm). The Volterra model, Andrews, and modified Gompertz were, respectively, adopted to describe the cell growth, substrate uptake rate, and product formation. The maximum specific CO uptake rate (qmax = 34.364 mmol/gcell/h), CO inhibition constant (KI = 0.601 atm), and maximum rate of ethanol (Rmax = 0.172 mmol/L/h at PCO = 0.598 atm) and acetate (Rmax = 0.096 mmol/L/h at PCO = 0.539 atm) production were determined from the applied models. |
| format | Article |
| id | doaj-art-83ae97ee91b146b8a4bb491faca40ab4 |
| institution | Kabale University |
| issn | 2356-6140 1537-744X |
| language | English |
| publishDate | 2014-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | The Scientific World Journal |
| spelling | doaj-art-83ae97ee91b146b8a4bb491faca40ab42025-02-03T01:32:44ZengWileyThe Scientific World Journal2356-61401537-744X2014-01-01201410.1155/2014/910590910590Kinetic Studies on Fermentative Production of Biofuel from Synthesis Gas Using Clostridium ljungdahliiMaedeh Mohammadi0Abdul Rahman Mohamed1Ghasem D. Najafpour2Habibollah Younesi3Mohamad Hekarl Uzir4Faculty of Chemical Engineering, Babol Noushirvani University of Technology, Babol 47148, IranLow Carbon Economy (LCE) Research Group, School of Chemical Engineering, Engineering Campus, Universiti Sains Malaysia, 14300 Nibong Tebal, Penang, MalaysiaFaculty of Chemical Engineering, Babol Noushirvani University of Technology, Babol 47148, IranDepartment of Environmental Science, Faculty of Natural Resources and Marine Science, Tarbiat Modares University, Nour 46414, IranLow Carbon Economy (LCE) Research Group, School of Chemical Engineering, Engineering Campus, Universiti Sains Malaysia, 14300 Nibong Tebal, Penang, MalaysiaThe intrinsic growth, substrate uptake, and product formation biokinetic parameters were obtained for the anaerobic bacterium, Clostridium ljungdahlii, grown on synthesis gas in various pressurized batch bioreactors. A dual-substrate growth kinetic model using Luong for CO and Monod for H2 was used to describe the growth kinetics of the bacterium on these substrates. The maximum specific growth rate (μmax = 0.195 h−1) and Monod constants for CO (Ks,CO = 0.855 atm) and H2 (Ks,H2 = 0.412 atm) were obtained. This model also accommodated the CO inhibitory effects on cell growth at high CO partial pressures, where no growth was apparent at high dissolved CO tensions (PCO∗>0.743 atm). The Volterra model, Andrews, and modified Gompertz were, respectively, adopted to describe the cell growth, substrate uptake rate, and product formation. The maximum specific CO uptake rate (qmax = 34.364 mmol/gcell/h), CO inhibition constant (KI = 0.601 atm), and maximum rate of ethanol (Rmax = 0.172 mmol/L/h at PCO = 0.598 atm) and acetate (Rmax = 0.096 mmol/L/h at PCO = 0.539 atm) production were determined from the applied models.http://dx.doi.org/10.1155/2014/910590 |
| spellingShingle | Maedeh Mohammadi Abdul Rahman Mohamed Ghasem D. Najafpour Habibollah Younesi Mohamad Hekarl Uzir Kinetic Studies on Fermentative Production of Biofuel from Synthesis Gas Using Clostridium ljungdahlii The Scientific World Journal |
| title | Kinetic Studies on Fermentative Production of Biofuel from Synthesis Gas Using Clostridium ljungdahlii |
| title_full | Kinetic Studies on Fermentative Production of Biofuel from Synthesis Gas Using Clostridium ljungdahlii |
| title_fullStr | Kinetic Studies on Fermentative Production of Biofuel from Synthesis Gas Using Clostridium ljungdahlii |
| title_full_unstemmed | Kinetic Studies on Fermentative Production of Biofuel from Synthesis Gas Using Clostridium ljungdahlii |
| title_short | Kinetic Studies on Fermentative Production of Biofuel from Synthesis Gas Using Clostridium ljungdahlii |
| title_sort | kinetic studies on fermentative production of biofuel from synthesis gas using clostridium ljungdahlii |
| url | http://dx.doi.org/10.1155/2014/910590 |
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