Life cycle comparison of waste-to-energy alternatives for municipal waste treatment in Chilean Patagonia
The energy system in the Region of Aysén, Chile, is characterized by a strong dependence on fossil fuels, which account for up to 51% of the installed capacity. Although the implementation of waste-to-energy concepts in municipal waste management systems could support the establishment of a more fos...
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| Veröffentlicht in: | Waste management & research 2013-10, Vol.31 (10_suppl), p.67-74 |
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| creator | Bezama, Alberto Douglas, Carla Méndez, Jacqueline Szarka, Nóra Muñoz, Edmundo Navia, Rodrigo Schock, Steffen Konrad, Odorico Ulloa, Claudia |
| description | The energy system in the Region of Aysén, Chile, is characterized by a strong dependence on fossil fuels, which account for up to 51% of the installed capacity. Although the implementation of waste-to-energy concepts in municipal waste management systems could support the establishment of a more fossil-independent energy system for the region, previous studies have concluded that energy recovery systems are not suitable from an economic perspective in Chile. Therefore, this work intends to evaluate these technical options from an environmental perspective, using life cycle assessment as a tool for a comparative analysis, considering Coyhaique city as a case study. Three technical alternatives were evaluated: (i) landfill gas recovery and flaring without energy recovery; (ii) landfill gas recovery and energy use; and (iii) the implementation of an anaerobic digestion system for the organic waste fraction coupled with energy recovery from the biogas produced. Mass and energy balances of the three analyzed alternatives have been modeled. The comparative LCA considered global warming potential, abiotic depletion and ozone layer depletion as impact categories, as well as required raw energy and produced energy as comparative regional-specific indicators. According to the results, the use of the recovered landfill gas as an energy source can be identified as the most environmentally appropriate solution for Coyhaique, especially when taking into consideration the global impact categories. |
| doi_str_mv | 10.1177/0734242X13499810 |
| format | Article |
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Although the implementation of waste-to-energy concepts in municipal waste management systems could support the establishment of a more fossil-independent energy system for the region, previous studies have concluded that energy recovery systems are not suitable from an economic perspective in Chile. Therefore, this work intends to evaluate these technical options from an environmental perspective, using life cycle assessment as a tool for a comparative analysis, considering Coyhaique city as a case study. Three technical alternatives were evaluated: (i) landfill gas recovery and flaring without energy recovery; (ii) landfill gas recovery and energy use; and (iii) the implementation of an anaerobic digestion system for the organic waste fraction coupled with energy recovery from the biogas produced. Mass and energy balances of the three analyzed alternatives have been modeled. The comparative LCA considered global warming potential, abiotic depletion and ozone layer depletion as impact categories, as well as required raw energy and produced energy as comparative regional-specific indicators. According to the results, the use of the recovered landfill gas as an energy source can be identified as the most environmentally appropriate solution for Coyhaique, especially when taking into consideration the global impact categories.</description><identifier>ISSN: 0734-242X</identifier><identifier>EISSN: 1096-3669</identifier><identifier>DOI: 10.1177/0734242X13499810</identifier><identifier>PMID: 23988463</identifier><language>eng</language><publisher>London, England: SAGE Publications</publisher><subject>Biofuels - analysis ; Chile ; Comparative analysis ; Energy ; Energy-Generating Resources ; Environment ; Environmental Monitoring ; Fossil fuels ; Gases - analysis ; Global warming ; Landfill ; Models, Theoretical ; Municipal solid waste ; Refuse as fuel ; Studies ; Waste Disposal Facilities ; Waste Management - methods ; Water treatment</subject><ispartof>Waste management & research, 2013-10, Vol.31 (10_suppl), p.67-74</ispartof><rights>The Author(s) 2013</rights><rights>Copyright Sage Publications Ltd. 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Although the implementation of waste-to-energy concepts in municipal waste management systems could support the establishment of a more fossil-independent energy system for the region, previous studies have concluded that energy recovery systems are not suitable from an economic perspective in Chile. Therefore, this work intends to evaluate these technical options from an environmental perspective, using life cycle assessment as a tool for a comparative analysis, considering Coyhaique city as a case study. Three technical alternatives were evaluated: (i) landfill gas recovery and flaring without energy recovery; (ii) landfill gas recovery and energy use; and (iii) the implementation of an anaerobic digestion system for the organic waste fraction coupled with energy recovery from the biogas produced. Mass and energy balances of the three analyzed alternatives have been modeled. The comparative LCA considered global warming potential, abiotic depletion and ozone layer depletion as impact categories, as well as required raw energy and produced energy as comparative regional-specific indicators. 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Although the implementation of waste-to-energy concepts in municipal waste management systems could support the establishment of a more fossil-independent energy system for the region, previous studies have concluded that energy recovery systems are not suitable from an economic perspective in Chile. Therefore, this work intends to evaluate these technical options from an environmental perspective, using life cycle assessment as a tool for a comparative analysis, considering Coyhaique city as a case study. Three technical alternatives were evaluated: (i) landfill gas recovery and flaring without energy recovery; (ii) landfill gas recovery and energy use; and (iii) the implementation of an anaerobic digestion system for the organic waste fraction coupled with energy recovery from the biogas produced. Mass and energy balances of the three analyzed alternatives have been modeled. 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| ispartof | Waste management & research, 2013-10, Vol.31 (10_suppl), p.67-74 |
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| subjects | Biofuels - analysis Chile Comparative analysis Energy Energy-Generating Resources Environment Environmental Monitoring Fossil fuels Gases - analysis Global warming Landfill Models, Theoretical Municipal solid waste Refuse as fuel Studies Waste Disposal Facilities Waste Management - methods Water treatment |
| title | Life cycle comparison of waste-to-energy alternatives for municipal waste treatment in Chilean Patagonia |
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