The Experts below are selected from a list of 3090 Experts worldwide ranked by ideXlab platform
Yi Zhang - One of the best experts on this subject based on the ideXlab platform.
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spent lithium ion Battery Recycling reductive ammonia leaching of metals from cathode scrap by sodium sulphite
Waste Management, 2017Co-Authors: Xiaohong Zheng, Wenfang Gao, Hongbin Cao, Xihua Zhang, Mingming He, Xiao Lin, Yi ZhangAbstract:Recycling of spent lithium-ion batteries has attracted wide attention because of their high content of valuable and hazardous metals. One of the difficulties for effective metal recovery is the separation of different metals from the solution after leaching. In this research, a full hydrometallurgical process is developed to selectively recover valuable metals (Ni, Co and Li) from cathode scrap of spent lithium ion batteries. By introducing ammonia-ammonium sulphate as the leaching solution and sodium sulphite as the reductant, the total selectivity of Ni, Co and Li in the first-step leaching solution is more than 98.6% while it for Mn is only 1.36%. In detail understanding of the selective leaching process is carried out by investigating the effects of parameters such as leaching reagent composition, leaching time (0–480 min), agitation speed (200–700 rpm), pulp density (10–50 g/L) and temperature (323–353 K). It was found that Mn is primarily reduced from Mn4+ into Mn2+ into the solution as Mn(NH3)x2+ while it subsequently precipitates out into the residue in the form of (NH4)2Mn(SO3)2·H2O. Ni, Co and Li are leached and remain in the solution either as metallic ion or amine complexes. The optimised leaching conditions can be further obtained and the leaching kinetics is found to be chemical reaction control under current leaching conditions. As a result, this research is potentially beneficial for further optimisation of the spent lithium ion Battery Recycling process after incorporating with metal extraction from the leaching solution.
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spent lithium ion Battery Recycling reductive ammonia leaching of metals from cathode scrap by sodium sulphite
Waste Management, 2017Co-Authors: Xiaohong Zheng, Wenfang Gao, Hongbin Cao, Xihua Zhang, Xiao Lin, Yi Zhang, Zhi SunAbstract:Recycling of spent lithium-ion batteries has attracted wide attention because of their high content of valuable and hazardous metals. One of the difficulties for effective metal recovery is the separation of different metals from the solution after leaching. In this research, a full hydrometallurgical process is developed to selectively recover valuable metals (Ni, Co and Li) from cathode scrap of spent lithium ion batteries. By introducing ammonia-ammonium sulphate as the leaching solution and sodium sulphite as the reductant, the total selectivity of Ni, Co and Li in the first-step leaching solution is more than 98.6% while it for Mn is only 1.36%. In detail understanding of the selective leaching process is carried out by investigating the effects of parameters such as leaching reagent composition, leaching time (0-480min), agitation speed (200-700rpm), pulp density (10-50g/L) and temperature (323-353K). It was found that Mn is primarily reduced from Mn4+ into Mn2+ into the solution as [Formula: see text] while it subsequently precipitates out into the residue in the form of (NH4)2Mn(SO3)2·H2O. Ni, Co and Li are leached and remain in the solution either as metallic ion or amine complexes. The optimised leaching conditions can be further obtained and the leaching kinetics is found to be chemical reaction control under current leaching conditions. As a result, this research is potentially beneficial for further optimisation of the spent lithium ion Battery Recycling process after incorporating with metal extraction from the leaching solution.
Hongbin Cao - One of the best experts on this subject based on the ideXlab platform.
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spent lithium ion Battery Recycling reductive ammonia leaching of metals from cathode scrap by sodium sulphite
Waste Management, 2017Co-Authors: Xiaohong Zheng, Wenfang Gao, Hongbin Cao, Xihua Zhang, Mingming He, Xiao Lin, Yi ZhangAbstract:Recycling of spent lithium-ion batteries has attracted wide attention because of their high content of valuable and hazardous metals. One of the difficulties for effective metal recovery is the separation of different metals from the solution after leaching. In this research, a full hydrometallurgical process is developed to selectively recover valuable metals (Ni, Co and Li) from cathode scrap of spent lithium ion batteries. By introducing ammonia-ammonium sulphate as the leaching solution and sodium sulphite as the reductant, the total selectivity of Ni, Co and Li in the first-step leaching solution is more than 98.6% while it for Mn is only 1.36%. In detail understanding of the selective leaching process is carried out by investigating the effects of parameters such as leaching reagent composition, leaching time (0–480 min), agitation speed (200–700 rpm), pulp density (10–50 g/L) and temperature (323–353 K). It was found that Mn is primarily reduced from Mn4+ into Mn2+ into the solution as Mn(NH3)x2+ while it subsequently precipitates out into the residue in the form of (NH4)2Mn(SO3)2·H2O. Ni, Co and Li are leached and remain in the solution either as metallic ion or amine complexes. The optimised leaching conditions can be further obtained and the leaching kinetics is found to be chemical reaction control under current leaching conditions. As a result, this research is potentially beneficial for further optimisation of the spent lithium ion Battery Recycling process after incorporating with metal extraction from the leaching solution.
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spent lithium ion Battery Recycling reductive ammonia leaching of metals from cathode scrap by sodium sulphite
Waste Management, 2017Co-Authors: Xiaohong Zheng, Wenfang Gao, Hongbin Cao, Xihua Zhang, Xiao Lin, Yi Zhang, Zhi SunAbstract:Recycling of spent lithium-ion batteries has attracted wide attention because of their high content of valuable and hazardous metals. One of the difficulties for effective metal recovery is the separation of different metals from the solution after leaching. In this research, a full hydrometallurgical process is developed to selectively recover valuable metals (Ni, Co and Li) from cathode scrap of spent lithium ion batteries. By introducing ammonia-ammonium sulphate as the leaching solution and sodium sulphite as the reductant, the total selectivity of Ni, Co and Li in the first-step leaching solution is more than 98.6% while it for Mn is only 1.36%. In detail understanding of the selective leaching process is carried out by investigating the effects of parameters such as leaching reagent composition, leaching time (0-480min), agitation speed (200-700rpm), pulp density (10-50g/L) and temperature (323-353K). It was found that Mn is primarily reduced from Mn4+ into Mn2+ into the solution as [Formula: see text] while it subsequently precipitates out into the residue in the form of (NH4)2Mn(SO3)2·H2O. Ni, Co and Li are leached and remain in the solution either as metallic ion or amine complexes. The optimised leaching conditions can be further obtained and the leaching kinetics is found to be chemical reaction control under current leaching conditions. As a result, this research is potentially beneficial for further optimisation of the spent lithium ion Battery Recycling process after incorporating with metal extraction from the leaching solution.
Wenfang Gao - One of the best experts on this subject based on the ideXlab platform.
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spent lithium ion Battery Recycling reductive ammonia leaching of metals from cathode scrap by sodium sulphite
Waste Management, 2017Co-Authors: Xiaohong Zheng, Wenfang Gao, Hongbin Cao, Xihua Zhang, Mingming He, Xiao Lin, Yi ZhangAbstract:Recycling of spent lithium-ion batteries has attracted wide attention because of their high content of valuable and hazardous metals. One of the difficulties for effective metal recovery is the separation of different metals from the solution after leaching. In this research, a full hydrometallurgical process is developed to selectively recover valuable metals (Ni, Co and Li) from cathode scrap of spent lithium ion batteries. By introducing ammonia-ammonium sulphate as the leaching solution and sodium sulphite as the reductant, the total selectivity of Ni, Co and Li in the first-step leaching solution is more than 98.6% while it for Mn is only 1.36%. In detail understanding of the selective leaching process is carried out by investigating the effects of parameters such as leaching reagent composition, leaching time (0–480 min), agitation speed (200–700 rpm), pulp density (10–50 g/L) and temperature (323–353 K). It was found that Mn is primarily reduced from Mn4+ into Mn2+ into the solution as Mn(NH3)x2+ while it subsequently precipitates out into the residue in the form of (NH4)2Mn(SO3)2·H2O. Ni, Co and Li are leached and remain in the solution either as metallic ion or amine complexes. The optimised leaching conditions can be further obtained and the leaching kinetics is found to be chemical reaction control under current leaching conditions. As a result, this research is potentially beneficial for further optimisation of the spent lithium ion Battery Recycling process after incorporating with metal extraction from the leaching solution.
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spent lithium ion Battery Recycling reductive ammonia leaching of metals from cathode scrap by sodium sulphite
Waste Management, 2017Co-Authors: Xiaohong Zheng, Wenfang Gao, Hongbin Cao, Xihua Zhang, Xiao Lin, Yi Zhang, Zhi SunAbstract:Recycling of spent lithium-ion batteries has attracted wide attention because of their high content of valuable and hazardous metals. One of the difficulties for effective metal recovery is the separation of different metals from the solution after leaching. In this research, a full hydrometallurgical process is developed to selectively recover valuable metals (Ni, Co and Li) from cathode scrap of spent lithium ion batteries. By introducing ammonia-ammonium sulphate as the leaching solution and sodium sulphite as the reductant, the total selectivity of Ni, Co and Li in the first-step leaching solution is more than 98.6% while it for Mn is only 1.36%. In detail understanding of the selective leaching process is carried out by investigating the effects of parameters such as leaching reagent composition, leaching time (0-480min), agitation speed (200-700rpm), pulp density (10-50g/L) and temperature (323-353K). It was found that Mn is primarily reduced from Mn4+ into Mn2+ into the solution as [Formula: see text] while it subsequently precipitates out into the residue in the form of (NH4)2Mn(SO3)2·H2O. Ni, Co and Li are leached and remain in the solution either as metallic ion or amine complexes. The optimised leaching conditions can be further obtained and the leaching kinetics is found to be chemical reaction control under current leaching conditions. As a result, this research is potentially beneficial for further optimisation of the spent lithium ion Battery Recycling process after incorporating with metal extraction from the leaching solution.
Xiaohong Zheng - One of the best experts on this subject based on the ideXlab platform.
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spent lithium ion Battery Recycling reductive ammonia leaching of metals from cathode scrap by sodium sulphite
Waste Management, 2017Co-Authors: Xiaohong Zheng, Wenfang Gao, Hongbin Cao, Xihua Zhang, Mingming He, Xiao Lin, Yi ZhangAbstract:Recycling of spent lithium-ion batteries has attracted wide attention because of their high content of valuable and hazardous metals. One of the difficulties for effective metal recovery is the separation of different metals from the solution after leaching. In this research, a full hydrometallurgical process is developed to selectively recover valuable metals (Ni, Co and Li) from cathode scrap of spent lithium ion batteries. By introducing ammonia-ammonium sulphate as the leaching solution and sodium sulphite as the reductant, the total selectivity of Ni, Co and Li in the first-step leaching solution is more than 98.6% while it for Mn is only 1.36%. In detail understanding of the selective leaching process is carried out by investigating the effects of parameters such as leaching reagent composition, leaching time (0–480 min), agitation speed (200–700 rpm), pulp density (10–50 g/L) and temperature (323–353 K). It was found that Mn is primarily reduced from Mn4+ into Mn2+ into the solution as Mn(NH3)x2+ while it subsequently precipitates out into the residue in the form of (NH4)2Mn(SO3)2·H2O. Ni, Co and Li are leached and remain in the solution either as metallic ion or amine complexes. The optimised leaching conditions can be further obtained and the leaching kinetics is found to be chemical reaction control under current leaching conditions. As a result, this research is potentially beneficial for further optimisation of the spent lithium ion Battery Recycling process after incorporating with metal extraction from the leaching solution.
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spent lithium ion Battery Recycling reductive ammonia leaching of metals from cathode scrap by sodium sulphite
Waste Management, 2017Co-Authors: Xiaohong Zheng, Wenfang Gao, Hongbin Cao, Xihua Zhang, Xiao Lin, Yi Zhang, Zhi SunAbstract:Recycling of spent lithium-ion batteries has attracted wide attention because of their high content of valuable and hazardous metals. One of the difficulties for effective metal recovery is the separation of different metals from the solution after leaching. In this research, a full hydrometallurgical process is developed to selectively recover valuable metals (Ni, Co and Li) from cathode scrap of spent lithium ion batteries. By introducing ammonia-ammonium sulphate as the leaching solution and sodium sulphite as the reductant, the total selectivity of Ni, Co and Li in the first-step leaching solution is more than 98.6% while it for Mn is only 1.36%. In detail understanding of the selective leaching process is carried out by investigating the effects of parameters such as leaching reagent composition, leaching time (0-480min), agitation speed (200-700rpm), pulp density (10-50g/L) and temperature (323-353K). It was found that Mn is primarily reduced from Mn4+ into Mn2+ into the solution as [Formula: see text] while it subsequently precipitates out into the residue in the form of (NH4)2Mn(SO3)2·H2O. Ni, Co and Li are leached and remain in the solution either as metallic ion or amine complexes. The optimised leaching conditions can be further obtained and the leaching kinetics is found to be chemical reaction control under current leaching conditions. As a result, this research is potentially beneficial for further optimisation of the spent lithium ion Battery Recycling process after incorporating with metal extraction from the leaching solution.
Barbara L. Forslund - One of the best experts on this subject based on the ideXlab platform.
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Source Attribution of Elevated Residential Soil Lead near a Battery Recycling Site
Environmental Science and Technology, 1995Co-Authors: Mitchell J. Small, Barbara L. Forslund, Arthur B. Nunn, Denise A DailyAbstract:A statistical methodology is developed to estimate site emission vs urban background contributions to elevated soil lead in areas adjacent to historic lead processing facilities. The methodology is applied in a study of residential soil lead contamination near a former automotive Battery Recycling facility in Pennsylvania. The site contribution is scaled to deposition estimates from an atmospheric dispersion model with unit emissions. Indicator variables are used to represent the effects of lead-based house paint and other background sources. The statistical model characterizes the observed soil lead concentration at each location as the sum of log-normally distributed components from the site and urban background; The model is used to estimate the spatial profile of mean contributions from the historic site emissions and the probability that the facility caused exceedances of a 500 µg/g criterion for remediation. The analysis helped to determine the extent of responsibility for cleanup and provided a rational basis for the termination of residential sampling at farther distances from the site.
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Comparison of IEUBK model predictions and actual blood lead values at a former Battery Recycling site.
Environmental Geochemistry and Health, 1994Co-Authors: Thomas A Lewandowski, Barbara L. ForslundAbstract:This paper presents an evaluation of US EPA's integrated exposureuptake biokinetic model for lead (IEUBK model) using data obtained during emergency removal operations at a former lead-acid Battery Recycling plant and the surrounding community. Data employed in the study include soil lead and interior dust lead, air lead levels collected at the site perimeter, drinking water lead levels at the community water main and blood lead data collected from an annual blood lead monitoring programme conducted over a four year period during the remediation activities.
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Comparison of IEUBK model predictions and actual blood lead values at a former Battery Recycling site.
Environmental Geochemistry and Health, 1994Co-Authors: Thomas A Lewandowski, Barbara L. ForslundAbstract:This paper presents an evaluation of US EPA's integrated exposureuptake biokinetic model for lead (IEUBK model) using data obtained during emergency removal operations at a former lead-acid Battery Recycling plant and the surrounding community. Data employed in the study include soil lead and interior dust lead, air lead levels collected at the site perimeter, drinking water lead levels at the community water main and blood lead data collected from an annual blood lead monitoring programme conducted over a four year period during the remediation activities.
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Comparison of IEUBK model predictions and actual blood lead values at a former Battery Recycling site
Environmental Geochemistry and Health, 1994Co-Authors: Thomas A Lewandowski, Barbara L. ForslundAbstract:This paper presents an evaluation of US EPA's integrated exposureuptake biokinetic model for lead (IEUBK model) using data obtained during emergency removal operations at a former lead-acid Battery Recycling plant and the surrounding community. Data employed in the study include soil lead and interior dust lead, air lead levels collected at the site perimeter, drinking water lead levels at the community water main and blood lead data collected from an annual blood lead monitoring programme conducted over a four year period during the remediation activities.Geometric mean soil and dust concentrations were found to be a better predictor of blood lead than arithmetic mean data. However, weight based dust lead data were believed to be an inappropriate measure of dust lead levels. Estimates of household dust lead concentrations based upon surface loading data (mug m(-2)) yielded blood lead predictions which were more consistent with data collected in the blood lead monitoring programme.
