scholarly journals Suggestion of Life Cycle Impact Assessment Methodology: Selection Criteria for Environmental Impact Categories

2019 ◽  
Author(s):  
Magali Rejane Rigon ◽  
Rafael Zortea ◽  
Carlos Alberto Mendes Moraes ◽  
Regina Célia Espinosa Modolo
Keyword(s):  
Life Cycle ◽  
Environmental Impact ◽  
Impact Assessment ◽  
Life Cycle Impact Assessment ◽  
Selection Criteria ◽  
Assessment Methodology ◽  
Impact Categories ◽  
Impact Assessment Methodology ◽  
Environmental Impact Categories ◽  
Life Cycle Impact

scholarly journals IMPACT 2002+: A new life cycle impact assessment methodology

2003 ◽  
Vol 8 (6) ◽  
Author(s):  
Olivier Jolliet ◽  
Manuele Margni ◽  
Raphaël Charles ◽  
Sébastien Humbert ◽  
Jérôme Payet ◽  
...  
Keyword(s):  
Life Cycle ◽  
Impact Assessment ◽  
Life Cycle Impact Assessment ◽  
Assessment Methodology ◽  
Impact Assessment Methodology ◽  
Life Cycle Impact

scholarly journals Life Cycle Impact Assessment of Recycled Aggregate Concrete, Geopolymer Concrete, and Recycled Aggregate-Based Geopolymer Concrete

2021 ◽  
Vol 13 (24) ◽  
pp. 13515
Author(s):  
Lahiba Imtiaz ◽  
Sardar Kashif-ur-Rehman ◽  
Wesam Salah Alaloul ◽  
Kashif Nazir ◽  
Muhammad Faisal Javed ◽  
...  
Keyword(s):  
Life Cycle ◽  
Impact Assessment ◽  
Life Cycle Impact Assessment ◽  
Recycled Aggregate Concrete ◽  
Recycled Aggregate ◽  
Geopolymer Concrete ◽  
Impact Categories ◽  
Aquatic Ecotoxicity ◽  
Photochemical Oxidant ◽  
Life Cycle Impact

This study presents a life cycle impact assessment of OPC concrete, recycled aggregate concrete, geopolymer concrete, and recycled aggregate-based geopolymer concrete by using the mid-point approach of the CML 2001 impact-assessment method. The life cycle impact assessment was carried out using OpenLCA software with nine different impact categories, such as global warming potential, acidification potential, eutrophication potential, ozone depletion potential, photochemical oxidant formation, human toxicity, marine aquatic ecotoxicity, and freshwater and terrestrial aquatic ecotoxicity potential. Subsequently, a contribution analysis was conducted for all nine impact categories. The analysis showed that using geopolymer concrete in place of OPC concrete can reduce global warming potential by up to 53.7%. Further, the use of geopolymer concrete represents the reduction of acidification potential and photochemical oxidant formation in the impact categories, along with climate change. However, the potential impacts of marine aquatic ecotoxicity, freshwater aquatic ecotoxicity, human toxicity, eutrophication potential, ozone depletion potential, and terrestrial aquatic ecotoxicity potential were increased using geopolymer concrete. The increase in these impacts was due to the presence of alkaline activators such as sodium hydroxide and sodium silicate. The use of recycled aggregates in both OPC concrete and geopolymer concrete reduces all the environmental impacts.

scholarly journals Life cycle impact assessment of biofuels derived from sweet sorghum in the U.S.

2021 ◽  
Vol 14 (1) ◽  
Author(s):  
Karla G. Morrissey ◽  
Greg Thoma ◽  
Dora E. López
Keyword(s):  
Life Cycle ◽  
Environmental Impact ◽  
Impact Assessment ◽  
Life Cycle Impact Assessment ◽  
Sweet Sorghum ◽  
Fossil Fuel ◽  
Direct Injection ◽  
Juice Extraction ◽  
Life Cycle Impact ◽  
Petroleum Fuels

Abstract Background The objective of this study was to evaluate the environmental impact of the production of a range of liquid biofuels produced from the combination of fermenting sorghum stalk juice (bioethanol) and the pyrolysis/hydrotreatment of residual bagasse (renewable gasoline and diesel). Life cycle impact assessment (LCIA) was performed on a farm-to-wheels system that included: (i) sorghum farming, (ii) juice extraction, (iii) juice fermenting, (iv) bagasse pretreatment, (v) bagasse thermochemical treatment (pyrolysis, hydroprocessing, and steam reforming), and (vi) typical passenger vehicle operation. LCIA results were compared to those of petroleum fuels providing the equivalent functional unit—cumulative kilometers driven by spark ignition direct injection (SIDI) vehicles utilizing either renewable gasoline or ‘bioE85—a blend of bioethanol and renewable gasoline,’ and a compression ignition direct injection (CIDI) vehicle utilizing renewable diesel produced from 76 tons of harvested sweet sorghum (1 ha). Results Sweet sorghum biofuels resulted in a 48% reduction climate change impact and a 52% reduction in fossil fuel depletion. Additionally, reduced impacts in ozone depletion and eutrophication were found (67% and 47%, respectively). Petroleum fuels had lower impacts for the categories of non-carcinogenic health impact, smog, respiratory effects, and ecotoxicity, showing tradeoffs between sorghum and petroleum fuels. Conclusion Overall, sorghum biofuels provide advantages in environmental impact categories including global warming potential, fossil fuel depletion and eutrophication, showing potential for sorghum as a promising second-generation feedstock for fuel.

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