The Experts below are selected from a list of 6756 Experts worldwide ranked by ideXlab platform
Jess W. Everett - One of the best experts on this subject based on the ideXlab platform.
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Alkaline Injection technology field demonstration
Fuel, 2006Co-Authors: Geoffrey A. Canty, Jess W. EverettAbstract:In December 2001, 2225 tonnes of fluidized bed combustion (FBC) ash were injected into an abandoned coal mine in eastern Oklahoma. Post-Injection monitoring continued for 24 months, during which the mine system appeared to be reestablishing equilibrium with CO 2 in the mine headspace. Alkalinity and pH gradually increased, and as of December 2003 were roughly 65 ppm and 7.3, respectively. Metal concentrations were still significantly lower than pre-Injection levels, but iron and manganese concentrations had increased from non-detect levels shortly after Injection to roughly 30 ppm and 1.25 ppm, respectively. Aluminum, nickel, and zinc were less than pre-Injection concentrations and did not appear to be increasing (roughly
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Alkaline Injection technology: Field demonstration
Fuel, 2006Co-Authors: Geoffrey A. Canty, Jess W. EverettAbstract:In December 2001, 2225 tonnes of fluidized bed combustion (FBC) ash were injected into an abandoned coal mine in eastern Oklahoma. Post-Injection monitoring continued for 24 months, during which the mine system appeared to be reestablishing equilibrium with CO 2 in the mine headspace. Alkalinity and pH gradually increased, and as of December 2003 were roughly 65 ppm and 7.3, respectively. Metal concentrations were still significantly lower than pre-Injection levels, but iron and manganese concentrations had increased from non-detect levels shortly after Injection to roughly 30 ppm and 1.25 ppm, respectively. Aluminum, nickel, and zinc were less than pre-Injection concentrations and did not appear to be increasing (roughly
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THE USE OF COAL COMBUSTION BY-PRODUCTS FOR IN SITU TREATMENT OF ACID MINE DRAINAGE
2004Co-Authors: Geoffrey A. Canty, Jess W. EverettAbstract:In 1994 a demonstration project was undertaken to investigate the effectiveness of using CCBs for the in situ treatment of acidic mine water. Actual Injection of Alkaline material was performed in 1997 with initial positive results; however, the amount of alkalinity added to the system was limited and resulted in short duration treatment. In 1999, a CBRC grant was awarded to further investigate the effectiveness of Alkaline Injection technology (AIT). Funds were released in fall 2001. In December 2001, 2500 tons of fluidized bed combustion (FBC) ash were injected into the wells used in the 1997 Injection project. Post Injection monitoring continued for 24 months. During this period the mine chemistry had gone through a series of chemical changes that manifested as stages or ''treatment phases.'' The mine system appeared to be in the midst of reestablishing equilibrium with the partial pressure of mine headspace. Alkalinity and pH appeared to be gradually increasing during this transition. As of December 2003, the pH and alkalinity were roughly 7.3 and 65 ppm, respectively. Metal concentrations were significantly lower than pre-Injection levels, but iron and manganese concentrations appeared to be gradually increasing (roughly 30 ppm and 1.25 ppm, respectively). Aluminum, nickel, and zincmore » were less than pre-Injection concentrations and did not appear to be increasing (roughly
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Physical and Chemical Evaluation of CCBs for Alternative Uses
Journal of Energy Engineering, 2001Co-Authors: Geoffrey A. Canty, Jess W. EverettAbstract:Coal combustion by-products (CCBs) have beneficial properties that are currently underutilized. Prudent evaluation of CCBs prior to alternative use application is in the best interest of the party undertaking the project. Ignorance and misunderstanding can lead to environmental harm and may result in unnecessary obstacles and undue regulation. With this consideration in mind, an Alkaline Injection treatment (AIT) evaluation was undertaken in order to select the most appropriate CCB to treat acid mine drainage (AMD). The information generated from this study also provides insight to the suitability of the CCBs for such alternative uses as neutralization of acidic industrial wastes and soil liming applications in an agricultural setting. Although there is variability in CCB composition due to parent material and operating conditions, general patterns are apparent from this work. With respect to AIT, CCBs with high Alkaline contents, nonsetting characteristics, and low exchangeable toxic constituents are the most effective and desirable.
Luchao Jin - One of the best experts on this subject based on the ideXlab platform.
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potential of Alkaline flooding to enhance heavy oil recovery through water in oil emulsification
Fuel, 2013Co-Authors: Haihua Pei, Guicai Zhang, Luchao JinAbstract:Abstract Alkaline flooding has great potential for enhancing the recovery of heavy oil, especially for reservoirs in which thermal methods are not suitable. In this study, Alkaline flooding tests were performed in micromodels and sandpacks to investigate the microscopic displacement mechanisms for enhancing heavy oil recovery and the effect of the Injection parameters on displacement efficiency. The micromodel tests indicate that the penetration of the Alkaline solution into the crude oil and the subsequent formation of a water-in-oil (W/O) emulsion reduce the mobility of the water phase and divert the injected water into the unswept region, thereby improving the sweep efficiency. The sandpack flood results show that the tertiary oil recovery can reach about 20% of the initial oil in place (IOIP) using 1.0% NaOH, and the tertiary oil recovery has been found to increase as the Alkaline concentration increases. However, there is an optimum slug size and Injection rate at which the highest tertiary oil recovery can be obtained during the Alkaline flooding process. Continuous Alkaline Injection can provide a higher tertiary oil recovery compared with a cyclic Alkaline Injection pattern. These results show that the Alkaline flooding, if properly designed and controlled, can lead to enhanced heavy oil recovery through the water-in-oil emulsification.
Geoffrey A. Canty - One of the best experts on this subject based on the ideXlab platform.
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Alkaline Injection technology field demonstration
Fuel, 2006Co-Authors: Geoffrey A. Canty, Jess W. EverettAbstract:In December 2001, 2225 tonnes of fluidized bed combustion (FBC) ash were injected into an abandoned coal mine in eastern Oklahoma. Post-Injection monitoring continued for 24 months, during which the mine system appeared to be reestablishing equilibrium with CO 2 in the mine headspace. Alkalinity and pH gradually increased, and as of December 2003 were roughly 65 ppm and 7.3, respectively. Metal concentrations were still significantly lower than pre-Injection levels, but iron and manganese concentrations had increased from non-detect levels shortly after Injection to roughly 30 ppm and 1.25 ppm, respectively. Aluminum, nickel, and zinc were less than pre-Injection concentrations and did not appear to be increasing (roughly
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Alkaline Injection technology: Field demonstration
Fuel, 2006Co-Authors: Geoffrey A. Canty, Jess W. EverettAbstract:In December 2001, 2225 tonnes of fluidized bed combustion (FBC) ash were injected into an abandoned coal mine in eastern Oklahoma. Post-Injection monitoring continued for 24 months, during which the mine system appeared to be reestablishing equilibrium with CO 2 in the mine headspace. Alkalinity and pH gradually increased, and as of December 2003 were roughly 65 ppm and 7.3, respectively. Metal concentrations were still significantly lower than pre-Injection levels, but iron and manganese concentrations had increased from non-detect levels shortly after Injection to roughly 30 ppm and 1.25 ppm, respectively. Aluminum, nickel, and zinc were less than pre-Injection concentrations and did not appear to be increasing (roughly
-
THE USE OF COAL COMBUSTION BY-PRODUCTS FOR IN SITU TREATMENT OF ACID MINE DRAINAGE
2004Co-Authors: Geoffrey A. Canty, Jess W. EverettAbstract:In 1994 a demonstration project was undertaken to investigate the effectiveness of using CCBs for the in situ treatment of acidic mine water. Actual Injection of Alkaline material was performed in 1997 with initial positive results; however, the amount of alkalinity added to the system was limited and resulted in short duration treatment. In 1999, a CBRC grant was awarded to further investigate the effectiveness of Alkaline Injection technology (AIT). Funds were released in fall 2001. In December 2001, 2500 tons of fluidized bed combustion (FBC) ash were injected into the wells used in the 1997 Injection project. Post Injection monitoring continued for 24 months. During this period the mine chemistry had gone through a series of chemical changes that manifested as stages or ''treatment phases.'' The mine system appeared to be in the midst of reestablishing equilibrium with the partial pressure of mine headspace. Alkalinity and pH appeared to be gradually increasing during this transition. As of December 2003, the pH and alkalinity were roughly 7.3 and 65 ppm, respectively. Metal concentrations were significantly lower than pre-Injection levels, but iron and manganese concentrations appeared to be gradually increasing (roughly 30 ppm and 1.25 ppm, respectively). Aluminum, nickel, and zincmore » were less than pre-Injection concentrations and did not appear to be increasing (roughly
-
Physical and Chemical Evaluation of CCBs for Alternative Uses
Journal of Energy Engineering, 2001Co-Authors: Geoffrey A. Canty, Jess W. EverettAbstract:Coal combustion by-products (CCBs) have beneficial properties that are currently underutilized. Prudent evaluation of CCBs prior to alternative use application is in the best interest of the party undertaking the project. Ignorance and misunderstanding can lead to environmental harm and may result in unnecessary obstacles and undue regulation. With this consideration in mind, an Alkaline Injection treatment (AIT) evaluation was undertaken in order to select the most appropriate CCB to treat acid mine drainage (AMD). The information generated from this study also provides insight to the suitability of the CCBs for such alternative uses as neutralization of acidic industrial wastes and soil liming applications in an agricultural setting. Although there is variability in CCB composition due to parent material and operating conditions, general patterns are apparent from this work. With respect to AIT, CCBs with high Alkaline contents, nonsetting characteristics, and low exchangeable toxic constituents are the most effective and desirable.
Haihua Pei - One of the best experts on this subject based on the ideXlab platform.
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potential of Alkaline flooding to enhance heavy oil recovery through water in oil emulsification
Fuel, 2013Co-Authors: Haihua Pei, Guicai Zhang, Luchao JinAbstract:Abstract Alkaline flooding has great potential for enhancing the recovery of heavy oil, especially for reservoirs in which thermal methods are not suitable. In this study, Alkaline flooding tests were performed in micromodels and sandpacks to investigate the microscopic displacement mechanisms for enhancing heavy oil recovery and the effect of the Injection parameters on displacement efficiency. The micromodel tests indicate that the penetration of the Alkaline solution into the crude oil and the subsequent formation of a water-in-oil (W/O) emulsion reduce the mobility of the water phase and divert the injected water into the unswept region, thereby improving the sweep efficiency. The sandpack flood results show that the tertiary oil recovery can reach about 20% of the initial oil in place (IOIP) using 1.0% NaOH, and the tertiary oil recovery has been found to increase as the Alkaline concentration increases. However, there is an optimum slug size and Injection rate at which the highest tertiary oil recovery can be obtained during the Alkaline flooding process. Continuous Alkaline Injection can provide a higher tertiary oil recovery compared with a cyclic Alkaline Injection pattern. These results show that the Alkaline flooding, if properly designed and controlled, can lead to enhanced heavy oil recovery through the water-in-oil emulsification.
Guicai Zhang - One of the best experts on this subject based on the ideXlab platform.
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potential of Alkaline flooding to enhance heavy oil recovery through water in oil emulsification
Fuel, 2013Co-Authors: Haihua Pei, Guicai Zhang, Luchao JinAbstract:Abstract Alkaline flooding has great potential for enhancing the recovery of heavy oil, especially for reservoirs in which thermal methods are not suitable. In this study, Alkaline flooding tests were performed in micromodels and sandpacks to investigate the microscopic displacement mechanisms for enhancing heavy oil recovery and the effect of the Injection parameters on displacement efficiency. The micromodel tests indicate that the penetration of the Alkaline solution into the crude oil and the subsequent formation of a water-in-oil (W/O) emulsion reduce the mobility of the water phase and divert the injected water into the unswept region, thereby improving the sweep efficiency. The sandpack flood results show that the tertiary oil recovery can reach about 20% of the initial oil in place (IOIP) using 1.0% NaOH, and the tertiary oil recovery has been found to increase as the Alkaline concentration increases. However, there is an optimum slug size and Injection rate at which the highest tertiary oil recovery can be obtained during the Alkaline flooding process. Continuous Alkaline Injection can provide a higher tertiary oil recovery compared with a cyclic Alkaline Injection pattern. These results show that the Alkaline flooding, if properly designed and controlled, can lead to enhanced heavy oil recovery through the water-in-oil emulsification.
