(2023) Environmental Impact Assessment for Livestock: A Review and Analysis of Odour and GHG Mitigation Techniques in Pig Production
Journal: Heliyon
Author: Cristina Decano-Valentin, In-Bok Lee*, Uk-hyeon Yeo, Sangyeon Lee, Jun-gyu Kim, Se-jun Park, Jeong-hwa Cho
Abstract
CONTEXT: A substantial reduction in the environmental impacts related to the construction and operation of livestock is needed to adapt to the continuing development of agriculture. Specifically, the environmental impact of producing livestock animals have found to contribute to large CO2-eq, SO2-eq and PO4-eq.OBJECTIVE: The main goal of the paper is to present an attempt to address the challenges of using the LCA tool for odour and GHG mitigation through the identification of the environmental impact of different odour and GHG mitigation technologies for pig production. Scenario cases were also designed to estimate the environmental impact of these techniques in pig production.METHODS: The impact analysis was evaluated through life cycle assessment (LCA) approach considering the three major impact categories such as global warming potential (GWP), eutrophication potential (EP) and acidification potential (AP). The designed case scenarios focussed on different odour and GHG techniques under feeding management, housing management, and manure storage & processing. The Ecoinvent database, a commercially available database for LCA, and OpenLCA software were used in the analysis.RESULTS AND DISCUSSION: The analysis of the literatures showed that three major phases have the highest impact on livestock emissions that including feed management, housing management and manure storage & processing. The result of the analysis showed even though a positive odour reduction was found in each technology considered, an additional burden can be added to the production system. The case where crude protein diet, biofilter, and anaerobic digester were used possess less environmental burden to the environment equivalent to 9.54 × 10-2, 6.50 × 10-1, 3.10 × 10-3 for GWP, AP, EP, respectively. This was followed by case which utilised reduced crude protein diet, biofilter, and feces separation with 2.23 × 10-1, 1.25 × 100, 7.82 × 102 for GWP, AP, EP, respectively.SIGNIFICANCE: The study presented the three major sources of GHG emission and evaluated the environmental impact of different mitigation techniques that are usually employed in pig production. The qualitative result of the evaluation can provide additional important information on decision-making for the installation and utilisation of different mitigation techniques
Keywords: Livestock odour, GHG mitigation techniques, livestock animals, life cycle assessment, OpenLCA
Download Link: https://ssrn.com/abstract=4468399 or http://dx.doi.org/10.2139/ssrn.4468399
Journal: Heliyon
Author: Cristina Decano-Valentin, In-Bok Lee*, Uk-hyeon Yeo, Sangyeon Lee, Jun-gyu Kim, Se-jun Park, Jeong-hwa Cho
Abstract
CONTEXT: A substantial reduction in the environmental impacts related to the construction and operation of livestock is needed to adapt to the continuing development of agriculture. Specifically, the environmental impact of producing livestock animals have found to contribute to large CO2-eq, SO2-eq and PO4-eq.OBJECTIVE: The main goal of the paper is to present an attempt to address the challenges of using the LCA tool for odour and GHG mitigation through the identification of the environmental impact of different odour and GHG mitigation technologies for pig production. Scenario cases were also designed to estimate the environmental impact of these techniques in pig production.METHODS: The impact analysis was evaluated through life cycle assessment (LCA) approach considering the three major impact categories such as global warming potential (GWP), eutrophication potential (EP) and acidification potential (AP). The designed case scenarios focussed on different odour and GHG techniques under feeding management, housing management, and manure storage & processing. The Ecoinvent database, a commercially available database for LCA, and OpenLCA software were used in the analysis.RESULTS AND DISCUSSION: The analysis of the literatures showed that three major phases have the highest impact on livestock emissions that including feed management, housing management and manure storage & processing. The result of the analysis showed even though a positive odour reduction was found in each technology considered, an additional burden can be added to the production system. The case where crude protein diet, biofilter, and anaerobic digester were used possess less environmental burden to the environment equivalent to 9.54 × 10-2, 6.50 × 10-1, 3.10 × 10-3 for GWP, AP, EP, respectively. This was followed by case which utilised reduced crude protein diet, biofilter, and feces separation with 2.23 × 10-1, 1.25 × 100, 7.82 × 102 for GWP, AP, EP, respectively.SIGNIFICANCE: The study presented the three major sources of GHG emission and evaluated the environmental impact of different mitigation techniques that are usually employed in pig production. The qualitative result of the evaluation can provide additional important information on decision-making for the installation and utilisation of different mitigation techniques
Keywords: Livestock odour, GHG mitigation techniques, livestock animals, life cycle assessment, OpenLCA
Download Link: https://ssrn.com/abstract=4468399 or http://dx.doi.org/10.2139/ssrn.4468399
107. Valentin et al. (2023) Environmental Impact Assessment For Livestock-A Review and Analysis of Odour.pdf