A study on microalgal biorefinery system with use phase uncertainty and allocation analysis

The biorefinery concept presents a way towards achieving economic and environmental feasibility for biofuels as means of satisfying global energy demand through synergies within the supply chain. Biodiesel and bioethanol have been mandated for inclusion into diesel and gasoline fuel blends in the Ph...

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Main Author: Ng, Earle Anderson Sy
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Language:English
Published: Animo Repository 2022
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Online Access:https://animorepository.dlsu.edu.ph/etdm_mecheng/7
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Institution: De La Salle University
Language: English
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spelling oai:animorepository.dlsu.edu.ph:etdm_mecheng-10042022-04-01T06:46:05Z A study on microalgal biorefinery system with use phase uncertainty and allocation analysis Ng, Earle Anderson Sy The biorefinery concept presents a way towards achieving economic and environmental feasibility for biofuels as means of satisfying global energy demand through synergies within the supply chain. Biodiesel and bioethanol have been mandated for inclusion into diesel and gasoline fuel blends in the Philippines since 2007 via the Philippine Biofuels Act. Microalgal biofuels have yet to be subject to a well-to-wheel life cycle assessment (LCA) that accounts for environmental impacts not only from production, but also from its use phase. The probabilistic nature of such usage is addressed through the Monte Carlo simulation. Moreover, the allocation of environmental burdens for pathways common to 2 or more products remains a matter of methodological debates in the field of LCA. As such, 3 allocation methodologies (mass, energy, and economic value) are used with system expansion in this study to analyze the sensitivity of environmental assessments to such methodological choices for pathways common to microalgae-based biodiesel and bioethanol. SimaPro LCA software is used to assess and present the environmental performance of biofuels across a wide range of environmental impacts based on the 2016 ReCiPe Endpoint criteria. Microalgal biofuel production is found to have energy intensive processes that must be optimized. Allocation analysis found that environmental performance lags behind fossil fuel counterparts. Local energy supply dominated by conventional fuels adversely impacts biorefinery environmental viability. A direct linear relationship between fuel consumption rate and environmental impact is discovered through uncertainty analysis using the Monte Carlo simulation. Recommendations are given to adopt better technologies, to study allocation methods further, and to formulate economic framework for the development of a local microalgal biofuels sector. 2022-02-03T08:00:00Z text application/pdf https://animorepository.dlsu.edu.ph/etdm_mecheng/7 Mechanical Engineering Master's Theses English Animo Repository Biodiesel fuels—Refining Biomass energy—Refining Energy Systems Mechanical Engineering
institution De La Salle University
building De La Salle University Library
continent Asia
country Philippines
Philippines
content_provider De La Salle University Library
collection DLSU Institutional Repository
language English
topic Biodiesel fuels—Refining
Biomass energy—Refining
Energy Systems
Mechanical Engineering
spellingShingle Biodiesel fuels—Refining
Biomass energy—Refining
Energy Systems
Mechanical Engineering
Ng, Earle Anderson Sy
A study on microalgal biorefinery system with use phase uncertainty and allocation analysis
description The biorefinery concept presents a way towards achieving economic and environmental feasibility for biofuels as means of satisfying global energy demand through synergies within the supply chain. Biodiesel and bioethanol have been mandated for inclusion into diesel and gasoline fuel blends in the Philippines since 2007 via the Philippine Biofuels Act. Microalgal biofuels have yet to be subject to a well-to-wheel life cycle assessment (LCA) that accounts for environmental impacts not only from production, but also from its use phase. The probabilistic nature of such usage is addressed through the Monte Carlo simulation. Moreover, the allocation of environmental burdens for pathways common to 2 or more products remains a matter of methodological debates in the field of LCA. As such, 3 allocation methodologies (mass, energy, and economic value) are used with system expansion in this study to analyze the sensitivity of environmental assessments to such methodological choices for pathways common to microalgae-based biodiesel and bioethanol. SimaPro LCA software is used to assess and present the environmental performance of biofuels across a wide range of environmental impacts based on the 2016 ReCiPe Endpoint criteria. Microalgal biofuel production is found to have energy intensive processes that must be optimized. Allocation analysis found that environmental performance lags behind fossil fuel counterparts. Local energy supply dominated by conventional fuels adversely impacts biorefinery environmental viability. A direct linear relationship between fuel consumption rate and environmental impact is discovered through uncertainty analysis using the Monte Carlo simulation. Recommendations are given to adopt better technologies, to study allocation methods further, and to formulate economic framework for the development of a local microalgal biofuels sector.
format text
author Ng, Earle Anderson Sy
author_facet Ng, Earle Anderson Sy
author_sort Ng, Earle Anderson Sy
title A study on microalgal biorefinery system with use phase uncertainty and allocation analysis
title_short A study on microalgal biorefinery system with use phase uncertainty and allocation analysis
title_full A study on microalgal biorefinery system with use phase uncertainty and allocation analysis
title_fullStr A study on microalgal biorefinery system with use phase uncertainty and allocation analysis
title_full_unstemmed A study on microalgal biorefinery system with use phase uncertainty and allocation analysis
title_sort study on microalgal biorefinery system with use phase uncertainty and allocation analysis
publisher Animo Repository
publishDate 2022
url https://animorepository.dlsu.edu.ph/etdm_mecheng/7
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