Key Data Set Information | |
Location | MS-SC-CN |
Geographical representativeness description | The milk source base is located at Hongya Country, Southwestern Sichuan Province, China, about 147 kilometres far from Chengdu City, the provincial capital. The diary processing plant is located at Pixian, suburb of Chengdu City, which is about 175 kilometres far from the milk source base. The branded milk is mainly distributed to the central Chengdu City, about 40 kilometres distances from the diary processing plant. The milk packaging waste is transported to the municipal landfill for final disposal, about 30 kilometres away from the central city. |
Reference year | 2017 |
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Use advice for data set | When applying this LCA data, users must consider the specific regional context (e.g., Sichuan, China) as environmental impacts may vary by location. This data set relies on a simplified version of the life cycle impact assessment which uses specific indicators. It is advised to update emission factors and methodological approaches to ensure relevance and accuracy. Additionally, users should note the consumption of fodder, electricity, and diesel in the production phase and apply appropriate CO2 emission coefficients and electricity emission factors sourced from Hospido et al. (2003) and the NDRC (2014). Pay attention to the specific treatment of end-of-life waste (e.g., milk packaging) as it is transported to a landfill for disposal. |
Technical purpose of product or process | The data set describes the full life cycle of a local branded pure milk production, which includes raw milk production at dairy farms and subsequent processing. The milk produced is intended for consumer consumption as a nutritional and food product. This Life Cycle Assessment (LCA) data set would be particularly useful for the dairy industry, food product manufacturers, and environmental analysts looking to quantify the environmental impacts of milk production, from dairy farming to distribution. |
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General comment on data set | The location of the raw milk production is dairy farms, where the main consumptions are fodder, electricity, and diesel. |
Copyright | No |
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Quantitative reference | |
Reference flow(s) |
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Functional Unit | The Tetra Pak 1litre pure liquid milk is selected to assess its lifecycle based carbon footprint. |
Technological representativeness | |
Technology description including background system | This study only focused on processes that directly contributed to pure milk production, that is, only the effects of energy and material input and carbon emissions, as shown in Figure 1. The system boundary of milk life cycle is thus simplified and divided into four stages, namely, raw milk production, dairy product processing, product transportation and packaging waste disposal. |
Flow diagram(s) or picture(s) |
LCI method and allocation | |||||
Type of data set | Unit process, single operation | ||||
Deviation from LCI method principle / explanations | None | ||||
Deviations from LCI method approaches / explanations | Compared with the conventional LCA, the process of life cycle impact assessment is simplified in this study, as it mainly uses different categories of indicators to elaborate results of life cycle inventory (Nigri et al., 2014). | ||||
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 | Table 1 shows the inventory data during the raw milk production stage, which are obtained by analogy to Hospido et al. (2003) on milk LCA. The location of the raw milk production is dairy farms, where the main consumptions are fodder, electricity, and diesel. From a conversion of the results obtained by Hospido et al. (2003) on GHG emissions factors from farm fodder and equipment disinfectant, a corresponding CO2 emission coefficient is obtained for the calculation. The electricity emission factor is based on the 2014 Baseline Emission Factors for Regional Power Grids in China, released by National Development and Reform Commission, of which the Central China power-grid emission factor is used in this study. The operating margin emissions factor is 0.972 t CO2/MWh, and the build margin emissions factor is 0.47 t CO2/MWh (NDRC, 2014). Through the conversion, the power grid emission factor is 0.723 kg/kW·h. | ||||
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 | ||||
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Data generator | |
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Time stamp (last saved) | 2024-03-19T15:52:00+08:00 |
Publication and ownership | |
UUID | 144c6792-dadc-4a40-bbb3-aa423c08669c |
Date of last revision | 2024-05-13T14:47:31.229968+08:00 |
Data set version | 01.00.005 |
Permanent data set URI | https://lcadata.tiangong.world/showProcess.xhtml?uuid=144c6792-dadc-4a40-bbb3-aa423c08669c&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 | Energy carriers and technologies / Electricity | 0.16920000000000002 MJ | 0.16920000000000002 MJ | ||||||
Product flow | Energy carriers and technologies / Crude oil based fuels | 3.68E-6 kg | 3.68E-6 kg | ||||||
Product flow | Materials production / Food and renewable raw materials | 1.29 kg | 1.29 kg | ||||||
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Product flow | Materials production / Organic chemicals | 1.59E-6 kg | 1.59E-6 kg | ||||||
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Elementary flow | Resources / Resources from water / Renewable material resources from water | 0.00266 m3 | 0.00266 m3 |
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, indoor | 0.5691 kg | 0.5691 kg | ||||||
Product flow | Materials production / Food and renewable raw materials | 0.001 kg | 0.001 kg | ||||||
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