Key Data Set Information | |
Location | FJ-CN |
Geographical representativeness description | Fujian province |
Reference year | 2015 |
Name |
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Use advice for data set | When using this dataset for Life Cycle Assessment, consider the following: - This dataset is specific to solvent extraction facilities in Fujian province, China, and may not be representative of all solvent extraction processes globally. - Pay attention to the substantial radioactive element content, especially thorium and uranium, that might be found in primary REE resources which affects the environmental impact assessment. - Additional purification steps for achieving >99% purity in individual rare earth solutions must be included in the impact assessment. - The separation of adjacent rare earth ions may involve complex extractants' behaviors which should be modeled carefully in the LCA process. |
Technical purpose of product or process | The rare earth elements (REE) leachate production through solvent extraction and ion adsorption from clay is primarily used in the production of individual rare earth ions, which are subsequently used in various high-technology applications, including electronics, magnets, ceramics, and as catalysts in the chemical industry. The process efficiently separates heavy, medium, and light rare earth ions for the creation of high-purity (>99%) rare earth solutions required in these advanced applications. |
Classification |
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General comment on data set | The rare earth elements (REE) leachate production through solvent extraction and ion adsorption from clay is primarily used in the production of individual rare earth ions, which are subsequently used in various high-technology applications, including electronics, magnets, ceramics, and as catalysts in the chemical industry. The process efficiently separates heavy, medium, and light rare earth ions for the creation of high-purity (>99%) rare earth solutions required in these advanced applications. |
Copyright | No |
Owner of data set | |
Quantitative reference | |
Reference flow(s) |
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Functional Unit | One ton of rare earth chloride aqueous solution processed at a solvent extraction facility in China to produce individual rare earth carbonates was defined as the functional unit. |
Technological representativeness | |
Technology description including background system | After the leaching step, using solvent extraction processes, the metal ion solution is separated into heavy, medium, and light rare earth ions. In addition, due to the ability to handle larger volumes of dilute pregnant solutions in industrial scale, solvent extraction has become the common practice to separate individual rare earth ions. It is worth mentioning that since the separation techniques are according to the variation in the potential of complex formation between the extractants (organic solvents) and the rare earth ions, the separation of neighboring rare earth ions by applying traditional solvent extraction approaches is laborious. Moreover, the presence of significant amount of radioactive elements such as thorium and to a marginal level uranium in primary REE resources and co-extraction of these elements make the REE production process more challenging. Additional solvent extraction steps are also mandatory to produce solutions of individual rare earths with purity higher than 99% |
Flow diagram(s) or picture(s) |
LCI method and allocation | |||||
Type of data set | LCI result | ||||
LCI Method Principle | Attributional | ||||
Deviation from LCI method principle / explanations | None | ||||
Deviation from modelling constants / explanations | None | ||||
Data sources, treatment and representativeness | |||||
Deviation from data cut-off and completeness principles / explanations | None | ||||
Deviation from data selection and combination principles / explanations | None | ||||
Deviation from data treatment and extrapolations principles / explanations | None | ||||
Data source(s) used for this data set | |||||
Completeness | |||||
Completeness of product model | No statement | ||||
Validation | |||||
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Data generator | |
Data set generator / modeller | |
Data entry by | |
Time stamp (last saved) | 2024-04-19T20:27:13+08:00 |
Publication and ownership | |
UUID | 3517a142-304c-42d8-bd19-83ac87efe846 |
Date of last revision | 2024-04-20T15:07:20.914683+08:00 |
Data set version | 00.01.005 |
Permanent data set URI | https://lcadata.tiangong.world/showProcess.xhtml?uuid=3517a142-304c-42d8-bd19-83ac87efe846&version=01.00.000&stock=TianGong |
Owner of data set | |
Copyright | No |
License type | Free of charge for all users and uses |
Inputs
Type of flow | Classification | Flow | Location | Mean amount | Resulting amount | Minimum amount | Maximum amount | ||
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Product flow | Emissions / Metal and semimetal elements and ions | 57.74 m3 | 57.74 m3 | ||||||
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Product flow | Energy carriers and technologies / Electricity | 1460.0 MJ | 1460.0 MJ | ||||||
Elementary flow | Emissions / Emissions to air / Emissions to air, unspecified | 2618.3 kg | 2618.3 kg | ||||||
Product flow | Materials production / Inorganic chemicals | 5701.0 kg | 5701.0 kg | ||||||
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Elementary flow | Emissions / Emissions to water / Emissions to water, unspecified | 433.0 kg | 433.0 kg | ||||||
Product flow | Materials production / Other mineralic materials | 38690.0 kg | 38690.0 kg | ||||||
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Product flow | Materials production / Inorganic chemicals | 315.0 kg | 315.0 kg | ||||||
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Product flow | Materials production / Organic chemicals | 18.6 kg | 18.6 kg | ||||||
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Product flow | Materials production / Organic chemicals | 8.5 kg | 8.5 kg | ||||||
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Product flow | Materials production / Organic chemicals | 13.8 kg | 13.8 kg | ||||||
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Product flow | Materials production / Organic chemicals | 18.6 kg | 18.6 kg | ||||||
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Product flow | Materials production / Other mineralic materials | 30.84 kg | 30.84 kg |
Outputs
Type of flow | Classification | Flow | Location | Mean amount | Resulting amount | Minimum amount | Maximum amount | ||
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Product flow | Materials production / Organic chemicals | 149.0 kg | 149.0 kg | ||||||
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Product flow | Materials production / Organic chemicals | 16.0 kg | 16.0 kg | ||||||
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Product flow | Materials production / Organic chemicals | 33.0 kg | 33.0 kg | ||||||
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Product flow | Materials production / Metals and semimetals | 121.0 kg | 121.0 kg | ||||||
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Product flow | Materials production / Organic chemicals | 26.0 kg | 26.0 kg | ||||||
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Product flow | Materials production / Organic chemicals | 25.0 kg | 25.0 kg | ||||||
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Product flow | Materials production / Inorganic chemicals | 19.0 kg | 19.0 kg | ||||||
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Product flow | Materials production / Organic chemicals | 10.0 kg | 10.0 kg | ||||||
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Product flow | Materials production / Organic chemicals | 10.0 kg | 10.0 kg | ||||||
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Product flow | Materials production / Organic chemicals | 125.0 kg | 125.0 kg | ||||||
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Product flow | Materials production / Organic chemicals | 13.0 kg | 13.0 kg | ||||||
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Product flow | Wastes / Radioactive waste | 58.98 kBq | 58.98 kBq | ||||||
Waste flow | Wastes / Production residues | 1.47 kg | 1.47 kg | ||||||
Product flow | Wastes / Other waste | 1.17 kg | 1.17 kg | ||||||
Waste flow | Wastes / Production residues | 2.9 kg | 2.9 kg | ||||||
Product flow | End-of-life treatment / Waste water treatment | 29.47 kg | 29.47 kg | ||||||
Elementary flow | Emissions / Emissions to water / Emissions to water, unspecified | 2.67 kg | 2.67 kg | ||||||
Elementary flow | Emissions / Emissions to water / Emissions to fresh water | 0.17 kg | 0.17 kg | ||||||
Elementary flow | Emissions / Emissions to water / Emissions to water, unspecified | 6.97 kg | 6.97 kg | ||||||
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Elementary flow | Emissions / Emissions to water / Emissions to water, unspecified | 0.02 kg | 0.02 kg | ||||||
Elementary flow | Emissions / Emissions to water / Emissions to water, unspecified | 0.44 kg | 0.44 kg | ||||||
Elementary flow | Emissions / Emissions to water / Emissions to water, unspecified | 0.00763 kg | 0.00763 kg | ||||||
Elementary flow | Emissions / Emissions to air / Emissions to air, unspecified | 2101.3 kg | 2101.3 kg | ||||||
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Elementary flow | Emissions / Emissions to water / Emissions to water, unspecified | 0.00117 kg | 0.00117 kg | ||||||
Elementary flow | Emissions / Emissions to water / Emissions to water, unspecified | 0.0129 kg | 0.0129 kg | ||||||
Elementary flow | Emissions / Emissions to air / Emissions to air, unspecified | 0.00881 kg | 0.00881 kg | ||||||
Elementary flow | Emissions / Emissions to air / Emissions to air, unspecified | 0.0522 kg | 0.0522 kg | ||||||
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Product flow | Emissions / Metal and semimetal elements and ions | 1.27 kg | 1.27 kg | ||||||
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Product flow | Materials production / Metals and semimetals | 1000.0 kg | 1000.0 kg |