The Experts below are selected from a list of 285174 Experts worldwide ranked by ideXlab platform
Kjell Aleklett - One of the best experts on this subject based on the ideXlab platform.
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aviation fuel and future Oil Production scenarios
Energy Policy, 2009Co-Authors: Emma Nygren, Kjell Aleklett, Mikael HöökAbstract:Most aviation fuels are jet fuels originating from crude Oil. Crude Oil must be refined to be useful and jet fuel is only one of many products that can be derived from crude Oil. Jet fuel is extracted from the middle distillates fraction and competes, for example, with the Production of diesel. Crude Oil is a limited natural resource subject to depletion and several reports indicate that the world's crude Oil Production is close to the maximum level and that it will start to decrease after reaching this maximum. A post-Kyoto political agenda to reduce Oil consumption will have the same effect on aviation fuel Production as a natural decline in the crude Oil Production. On the other hand, it is predicted by the aviation industry that aviation traffic will keep on increasing. The industry has put ambitious goals on increases in fuel efficiency for the aviation fleet. Traffic is predicted to grow by 5% per year to 2026, fuel demand by about 3% per year. At the same time, aviation fuel Production is predicted to decrease by several percent each year after the crude Oil Production peak is reached resulting in a substantial shortage of jet fuel by 2026. The aviation industry will have a hard time replacing this with fuel from other sources, even if air traffic remains at current levels.
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giant Oil field decline rates and their influence on world Oil Production
Energy Policy, 2009Co-Authors: Mikael Höök, Robert L Hirsch, Kjell AleklettAbstract:The most important contributors to the world's total Oil Production are the giant Oil fields. Using a comprehensive database of giant Oil field Production, the average decline rates of the world's giant Oil fields are estimated. Separating subclasses was necessary, since there are large differences between land and offshore fields, as well as between non-OPEC and OPEC fields. The evolution of decline rates over past decades includes the impact of new technologies and Production techniques and clearly shows that the average decline rate for individual giant fields is increasing with time. These factors have significant implications for the future, since the most important world Oil Production base - giant fields - will decline more rapidly in the future, according to our findings. Our conclusion is that the world faces an increasing Oil supply challenge, as the decline in existing Production is not only high now but will be increasing in the future.
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giant Oil field decline rates and their influence on world Oil Production
Energy Policy, 2009Co-Authors: Mikael Höök, Robert L Hirsch, Kjell AleklettAbstract:The most important contributors to the world's total Oil Production are the giant Oil fields. Using a comprehensive database of giant Oil field Production, the average decline rates of the world's ...
Yong Chen - One of the best experts on this subject based on the ideXlab platform.
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microbial Oil Production from corncob acid hydrolysate by oleaginous yeast trichosporon coremiiforme
Biomass & Bioenergy, 2013Co-Authors: Chao Huang, Lian Xiong, Xinde Chen, Xuefang Chen, Xiaoyan Yang, Yong ChenAbstract:Abstract In this work, corncob acid hydrolysate was used for microbial Oil Production by oleaginous yeast Trichosporon coremiiforme for the first time. Hydrolysed by dilute sulphuric acid, corncob could turn into an acid hydrolysate with high sugar concentration (45.7 g L−1) and this hydrolysate could be utilized for microbial Oil Production without concentration process. After detoxified by overliming and absorption with activated carbon, the corncob hydrolysate could be used by T. coremiiforme efficiently that a total cell mass of 20.4 g L−1 with a lipid content of 37.8% (corresponding to a lipid yield of 7.7 g L−1), and a lipid coefficient of 17.2 could be obtained after cultivation of T. coremiiforme on the corncob hydrolysate for 8 days. Therefore, T. coremiiforme is a promising strain for microbial Oil Production from lignocellulosic biomass.
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Oil Production on wastewaters after butanol fermentation by oleaginous yeast trichosporon coremiiforme
Bioresource Technology, 2012Co-Authors: Xuefang Chen, Lian Xiong, Xinde Chen, Chao Huang, Yong ChenAbstract:Abstract From the distillation process after butanol fermentation, wastewaters mainly consisted of organic acids and residual sugars and with high COD (usually >20,000 mg/L) are generated. Without any pretreatment and adding other nutrients (nitrogen sources and trace elements), these wastewaters were used as substrate for microbial Oil Production by oleaginous yeast Trichosporon coremiiforme . After 5 days’ lipid fermentation, all the sugars and organic acids measured were totally utilized by T. coremiiforme and a 68% of COD degradation could be obtained. The highest biomass and lipid content of T. coremiiforme on the wastewaters were 5.8 g/L and 19.1%, respectively. This work shows that T. coremiiforme is a promising strain for microbial Oil Production on the wastewaters after butanol fermentation.
Mikael Höök - One of the best experts on this subject based on the ideXlab platform.
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aviation fuel and future Oil Production scenarios
Energy Policy, 2009Co-Authors: Emma Nygren, Kjell Aleklett, Mikael HöökAbstract:Most aviation fuels are jet fuels originating from crude Oil. Crude Oil must be refined to be useful and jet fuel is only one of many products that can be derived from crude Oil. Jet fuel is extracted from the middle distillates fraction and competes, for example, with the Production of diesel. Crude Oil is a limited natural resource subject to depletion and several reports indicate that the world's crude Oil Production is close to the maximum level and that it will start to decrease after reaching this maximum. A post-Kyoto political agenda to reduce Oil consumption will have the same effect on aviation fuel Production as a natural decline in the crude Oil Production. On the other hand, it is predicted by the aviation industry that aviation traffic will keep on increasing. The industry has put ambitious goals on increases in fuel efficiency for the aviation fleet. Traffic is predicted to grow by 5% per year to 2026, fuel demand by about 3% per year. At the same time, aviation fuel Production is predicted to decrease by several percent each year after the crude Oil Production peak is reached resulting in a substantial shortage of jet fuel by 2026. The aviation industry will have a hard time replacing this with fuel from other sources, even if air traffic remains at current levels.
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giant Oil field decline rates and their influence on world Oil Production
Energy Policy, 2009Co-Authors: Mikael Höök, Robert L Hirsch, Kjell AleklettAbstract:The most important contributors to the world's total Oil Production are the giant Oil fields. Using a comprehensive database of giant Oil field Production, the average decline rates of the world's giant Oil fields are estimated. Separating subclasses was necessary, since there are large differences between land and offshore fields, as well as between non-OPEC and OPEC fields. The evolution of decline rates over past decades includes the impact of new technologies and Production techniques and clearly shows that the average decline rate for individual giant fields is increasing with time. These factors have significant implications for the future, since the most important world Oil Production base - giant fields - will decline more rapidly in the future, according to our findings. Our conclusion is that the world faces an increasing Oil supply challenge, as the decline in existing Production is not only high now but will be increasing in the future.
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giant Oil field decline rates and their influence on world Oil Production
Energy Policy, 2009Co-Authors: Mikael Höök, Robert L Hirsch, Kjell AleklettAbstract:The most important contributors to the world's total Oil Production are the giant Oil fields. Using a comprehensive database of giant Oil field Production, the average decline rates of the world's ...
Chao Huang - One of the best experts on this subject based on the ideXlab platform.
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microbial Oil Production from corncob acid hydrolysate by oleaginous yeast trichosporon coremiiforme
Biomass & Bioenergy, 2013Co-Authors: Chao Huang, Lian Xiong, Xinde Chen, Xuefang Chen, Xiaoyan Yang, Yong ChenAbstract:Abstract In this work, corncob acid hydrolysate was used for microbial Oil Production by oleaginous yeast Trichosporon coremiiforme for the first time. Hydrolysed by dilute sulphuric acid, corncob could turn into an acid hydrolysate with high sugar concentration (45.7 g L−1) and this hydrolysate could be utilized for microbial Oil Production without concentration process. After detoxified by overliming and absorption with activated carbon, the corncob hydrolysate could be used by T. coremiiforme efficiently that a total cell mass of 20.4 g L−1 with a lipid content of 37.8% (corresponding to a lipid yield of 7.7 g L−1), and a lipid coefficient of 17.2 could be obtained after cultivation of T. coremiiforme on the corncob hydrolysate for 8 days. Therefore, T. coremiiforme is a promising strain for microbial Oil Production from lignocellulosic biomass.
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Oil Production on wastewaters after butanol fermentation by oleaginous yeast trichosporon coremiiforme
Bioresource Technology, 2012Co-Authors: Xuefang Chen, Lian Xiong, Xinde Chen, Chao Huang, Yong ChenAbstract:Abstract From the distillation process after butanol fermentation, wastewaters mainly consisted of organic acids and residual sugars and with high COD (usually >20,000 mg/L) are generated. Without any pretreatment and adding other nutrients (nitrogen sources and trace elements), these wastewaters were used as substrate for microbial Oil Production by oleaginous yeast Trichosporon coremiiforme . After 5 days’ lipid fermentation, all the sugars and organic acids measured were totally utilized by T. coremiiforme and a 68% of COD degradation could be obtained. The highest biomass and lipid content of T. coremiiforme on the wastewaters were 5.8 g/L and 19.1%, respectively. This work shows that T. coremiiforme is a promising strain for microbial Oil Production on the wastewaters after butanol fermentation.
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microbial Oil Production from rice straw hydrolysate by trichosporon fermentans
Bioresource Technology, 2009Co-Authors: Chao Huang, Minhua Zong, Qiuping LiuAbstract:Microbial Oil Production from sulphuric acid treated rice straw hydrolysate (SARSH) by Trichosporon fermentans was performed for the first time. Fermentation of SARSH without detoxification gave a poor lipid yield of 1.7 g/l, which was much lower than the result with glucose or xylose as the single carbon source (13.6 g/l or 9.9 g/l). The detoxification pretreatment, including overliming, concentration, and adsorption by Amberlite XAD-4 improved the fermentability of SARSH significantly by removing the inhibitors in SARSH. A total biomass of 28.6 g/l with a lipid content of 40.1% (corresponding to a lipid yield of 11.5 g/l) could be achieved after cultivation of T. fermentans on the detoxified SARSH for 8 days. Moreover, besides SARSH, T. fermentans could also utilize mannose, galactose, or cellobiose, in hydrolysates of other natural lignocellulosic materials as the single carbon source to grow and accumulate lipid with a high yield (at least 10.4 g/l). Hence, it is a promising strain for microbial Oil Production and thus biodiesel preparation from agro-industrial residues, especially lignocellulosic materials.
Zhenjun Wang - One of the best experts on this subject based on the ideXlab platform.
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state of the art on ultrasonic Oil Production technique for eor in china
Ultrasonics Sonochemistry, 2017Co-Authors: Zhenjun Wang, Congbo YinAbstract:Ultrasonic Oil Production technique for enhanced Oil recovery (EOR) attracts more attention due to its high adaptability, simple operation, low cost and zero pollution to the Oil reservoir. In this paper, recent new downhole tools used for enhanced Oil recovery developed in China are summarized. Furthermore, research advance on some key problems that affect the widespread application of ultrasonic Oil Production technique in China are also summarized in view of what are the primary factors that influence crude Oil paraffin inhibition and viscosity reduction, whether ultrasonic excitation is better than chemical agent for any plugs removal and whether ultrasound-chemical combination plug removal technology has the best plugs removal effect. The purpose of this paper is to provide reference for the broad application of ultrasonic Oil Production for enhance Oil recovery.
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research status and development trend of ultrasonic Oil Production technique in china
Ultrasonics Sonochemistry, 2015Co-Authors: Zhenjun Wang, Yuanming Xu, Bajracharya SumanAbstract:This paper presents an overview of research status and development trend of ultrasonic Oil Production technique for Enhanced Oil Recovery in China. As one of EOR techniques, ultrasonic Oil Production attracts more attention due to its simplicity, lower expenses, good applicability and no reservoir pollution. Through the comparison of the development of ultrasonic Oil Production both in China and other countries, this paper summarize the recent research progress in ultrasonic Oil Production techniques and practices in China. Finally, the development of Oil Production equipment and development trend of ultrasonic Oil Production technique in China are given.
