Energy life-cycle assessment and CO2 emissions analysis of soybean-based biodiesel: a case study

Rajaeifar, Mohammad Ali; Ghobadian, Barat; Safa, Majeed; Heidari, Mohammad Davoud

doi:10.1016/j.jclepro.2013.10.041

Cited by 59 publications

(32 citation statements)

References 32 publications

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“…Still considering the net CO 2 emissions in B100 supply chain, the work of (Rajaeifar et al, 2014) [22] obtains the same conclusion of this paper: raw material production is responsible for the largest amount of emissions. Nevertheless, biodiesel transportation has less weight in the total supply chain (1.17% in the abovementioned paper versus 6.14% in the present research).…”

Section: Net Co2 Emissionssupporting

confidence: 68%

Assessing Cleaner Energy Alternatives for Bus Transit in Rio de Janeiro: A Life Cycle Inventory Analysis

D’Agosto¹,

Oliveira²,

Assumpção³

et al. 2015

JEP

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Section: Net Co2 Emissionssupporting

confidence: 68%

Assessing Cleaner Energy Alternatives for Bus Transit in Rio de Janeiro: A Life Cycle Inventory Analysis

D’Agosto¹,

Oliveira²,

Assumpção³

et al. 2015

JEP

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“…A FER of 4.56 was reported by Pradhan et al (2009), which was a considerable improvement over FER = 3.20 reported by Sheehan et al (1998); the increased adoption of no-till practices by soybean farmers reduced fuel requirements, and also the widespread adoption of genetically engineered soybeans has reduced pesticide use. FER = 1.97 was obtained by Pradhan et al (2011), andRajaeifar et al (2014) calculated energy requirements for major biodiesel subsystems and total life cycle energy requirements, obtaining 5.9 MJ/L of soybean biodiesel (FER = 5.54), as soybean crushing and transesterification facilities been built recently are more energy efficient; also, continued improvement in soybean yields and reduced overall energy usage contributed to a better FER. Huo et al (2009) carried out well-to-wheel LCA on total energy use, fossil energy use, petroleum energy use, and GHG emissions, expressing results in one million Btu of fuel produced and used, yielding that soybean-based fuels offered 6-25 % lower total energy use than petroleum diesel or gasoline per million Btu and significant reductions (52-107 %) in fossil energy use.…”

Section: Discussionmentioning

confidence: 99%

Life cycle assessment of the transesterification double step process for biodiesel production from refined soybean oil in Brazil

Carvalho

Silva

Andersen

et al. 2016

Environ Sci Pollut Res

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Biodiesel has been attracting considerable attention as being a renewable, biodegradable, and nontoxic fuel that can contribute to the solution of some energy issues as it presents potential to help mitigate climate change. The Life Cycle Assessment of biodiesel from soybean oil (transesterification double step process) was carried out herein. A pilot plant was considered, designed to produce 72 L of biodiesel in daily continuous flow, throughout a lifetime of 15 years (8000 annual hours). The materials and equipment utilized in the construction of the plant were considered as well as the energy and substances required for the production of biodiesel. Environmental impact assessment method IPCC 2013 GWP 100a was utilized within the SimaPro software to express the final result in kg CO2-equivalent. The results quantified the CO2 emissions associated with biodiesel production throughout the lifetime of the production plant (15 years), resulting in a total value of 1,441,426.05 kg CO2-eq. (96,095.07 kg CO2-eq. per year), which was equivalent to 4.01 kg CO2-eq. per liter of biodiesel produced. Decrease of environmental loads associated with the production of biodiesel could include improvements on the handling of biomass agriculture and on the technology production of biodiesel.

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“…Moreover, during fermentation, sugars are converted to ethanol and carbon dioxide. Approximately, 720 kg CO 2 is produced per ton of bioethanol produced [21,46,47]. Firstly, in hydrolysis the cellulose is converted into glucose sugars.…”

Section: Environmental Indicatorsmentioning

confidence: 99%

An Assessment of the Sustainability of Lignocellulosic Bioethanol Production from Wastes in Iceland

Safarian

Unnþórsson

2018

Energies

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This paper describes the development of a model to comprehensively assess the sustainability impacts of producing lignocellulosic bioethanol from various types of municipal organic wastes (MOWs) in Iceland: paper and paperboard, timber and wood and garden waste. The tool integrates significant economic, energy, environmental and technical aspects to analyse and rank twelve systems using the most common pretreatment technologies: dilute acid, dilute alkali, hot water and steam explosion. The results show that among the MOWs, paper and paperboard have higher positive rankings under most assessments. Steam explosion is also ranked at the top from the economic, energy and environmental perspectives, followed by the hot water method for paper and timber wastes. Finally, a potential evaluation of total wastes and bioethanol production in Iceland is carried out. The results show that the average production of lignocellulosic bioethanol in 2015 could be 12.5, 11 and 3 thousand tons from paper, timber and garden wastes, respectively, and that production could reach about 15.9, 13.7 and 3.7 thousand tons, respectively, by 2030.

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Energy life-cycle assessment and CO2 emissions analysis of soybean-based biodiesel: a case study

Cited by 59 publications

References 32 publications

Assessing Cleaner Energy Alternatives for Bus Transit in Rio de Janeiro: A Life Cycle Inventory Analysis

Assessing Cleaner Energy Alternatives for Bus Transit in Rio de Janeiro: A Life Cycle Inventory Analysis

Life cycle assessment of the transesterification double step process for biodiesel production from refined soybean oil in Brazil

An Assessment of the Sustainability of Lignocellulosic Bioethanol Production from Wastes in Iceland

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