Key Data Set Information | |
Location | GD-CN |
Geographical representativeness description | Data development site |
Reference year | 2009 |
Name |
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Use advice for data set | When utilizing data from the LCA and LCC analysis of NGH mining, consider the context of the dataset's origin, including the environmental conditions of the Northern South China Sea, technological applicability, and specific geographical factors. Comparison to regional natural gas mining practices may be necessary to fully understand environmental and economic benefits. Methodological advice includes ensuring the inclusion of critical emissions and environmental impact potentials of NGH mining in environmental cost calculations, and considering these data points when making decisions on energy and resource utilization strategies. |
Technical purpose of product or process | Methane hydrate, extracted via NGH mining, is mainly used as an alternative energy source to natural gas. Its extraction process, which has been demonstrated as economically viable and environmentally less impactful in comparison to conventional natural gas production, is suitable for regions with identified high-grade, shallow, and concentrated NGH deposits. The methane produced can be utilized for energy generation, heating, and as feedstock in various chemical processes. |
Classification |
Class name
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Hierarchy level
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General comment on data set | In this paper, LCA analysis of hydrate mining is carried out, and the most important process links and impact categories that affect the environment in its life cycle are obtained, the causes are analyzed, and reasonable improvement opinions are put forward |
Copyright | No |
Owner of data set | |
Quantitative reference | |
Reference flow(s) |
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Time representativeness | |
Time representativeness description | Publication time of literature |
Technological representativeness | |
Technology description including background system | Using life cycle assessment (LCA) and life cycle cost analysis (LCC), the environmental effects and economic benefits of marine NGH exploitation are systematically analyzed and compared with those of natural gas (NG) exploitation. The results show that the acid gas emission from NGH mining is close to zero and the greenhouse gas emission is relatively small, and the life cycle cost of NGH mining is lower than that of NG mining. |
Flow diagram(s) or picture(s) |
LCI method and allocation | |||||
Type of data set | Unit process, single operation | ||||
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 | ||||
Data selection and combination principles | Guangzhou Marine Geological Survey has carried out special hydrate investigation in Dongsha, Shenhu, Xisha and Qiongdongnan in the northern South China Sea for 9 years, and completed comprehensive investigation and research for 18 voyages. It has found a large number of cold spring carbonates and methane bacteria biota that live on natural gas. To a great extent, it can be judged that there are large leakage NGH deposits [5], which are characterized by high grade, shallow burial and concentrated distribution. | ||||
Deviation from data selection and combination principles / explanations | None | ||||
Data treatment and extrapolations principles | The environmental and economic performance of NGH mining are comprehensively evaluated by using the life cycle method. Effective identification of key emissions and environmental impact potential, find out the most important environmental costs, and provide quantitative scientific basis for the selection of technical schemes. It shows that the mining of NGH is feasible. | ||||
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) | 2024-03-20T12:54:05+08:00 |
Publication and ownership | |
UUID | dfdf53a2-19f7-4f3b-b61a-6565d0fe6525 |
Date of last revision | 2024-04-20T14:32:07.492938+08:00 |
Data set version | 00.01.005 |
Permanent data set URI | https://lcadata.tiangong.world/showProcess.xhtml?uuid=dfdf53a2-19f7-4f3b-b61a-6565d0fe6525&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 | Other Services / Other services | 0.31 m2 | 0.31 m2 | ||||||
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Product flow | Materials production / Other mineralic materials | 0.484 kg | 0.484 kg | ||||||
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Product flow | Materials production / Other materials | 1.0 Item(s) | 1.0 Item(s) | ||||||
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Outputs
Type of flow | Classification | Flow | Location | Mean amount | Resulting amount | Minimum amount | Maximum amount | ||
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Elementary flow | Emissions / Emissions to air / Emissions to air, unspecified | 6.23E-4 kg | 6.23E-4 kg | ||||||
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Elementary flow | Emissions / Emissions to air / Emissions to air, unspecified | 0.001 kg | 0.001 kg | ||||||
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Elementary flow | Emissions / Emissions to air / Emissions to urban air close to ground | 9.9E-4 kg | 9.9E-4 kg | ||||||
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Elementary flow | Emissions / Emissions to air / Emissions to air, unspecified | 0.481 kg | 0.481 kg | ||||||
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