Life-cycle greenhouse gas emissions and energy balances of sugarcane ethanol production in Mexico

García, Carlos A.; Fuentes, Alfredo; Hennecke, Anna; Riegelhaupt, Enrique; Manzini, Fabio; Masera, Omar

doi:10.1016/j.apenergy.2010.12.072

Cited by 96 publications

(49 citation statements)

References 19 publications

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“…The GHG emissions were analyzed as g CO 2eq /MJ. The article's original values expressed per kg of biofuel were then transformed considering a lower heating value of 26.8 MJ/kg for ethanol (Garcia et al 2011) and of 37.1 MJ/kg for biodiesel (Iriarte et al 2012). LCA results expressed in other functional units (such as land area) were not considered.…”

Section: Quantitative Resultsmentioning

confidence: 99%

A Review of Environmental Life Cycle Assessments of Liquid Transportation Biofuels in the Pan American Region

Shonnard

Klemetsrud

Sacramento-Rivero

et al. 2015

Environmental Management

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Life-cycle assessment (LCA) has been applied to many biofuel and bioenergy systems to determine potential environmental impacts, but the conclusions have varied. Different methodologies and processes for conducting LCA of biofuels make the results difficult to compare, in-turn making it difficult to make the best possible and informed decision. Of particular importance are the wide variability in country-specific conditions, modeling assumptions, data quality, chosen impact categories and indicators, scale of production, system boundaries, and co-product allocation. This study has a double purpose: conducting a critical evaluation comparing environmental LCA of biofuels from several conversion pathways and in several countries in the Pan American region using both qualitative and quantitative analyses, and making recommendations for harmonization with respect to biofuel LCA study features, such as study assumptions, inventory data, impact indicators, and reporting practices. The environmental management implications are discussed within the context of different national and international regulatory environments using a case study. The results from this study highlight LCA methodology choices that cause high variability in results and limit comparability among different studies, even among the same biofuel pathway, and recommendations are provided for improvement.

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Section: Quantitative Resultsmentioning

confidence: 99%

A Review of Environmental Life Cycle Assessments of Liquid Transportation Biofuels in the Pan American Region

Shonnard

Klemetsrud

Sacramento-Rivero

et al. 2015

Environmental Management

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“…It has been reported in the literature that the rat io of energy, R E , in a unit volu me of ethanol to the non renewab le energy used, to produce that volume of ethanol is between 1.29 and 1.65 for corn ethanol [10] and between 2 [11] and 8.4 [12] for sugar cane ethanol. This value is strongly dependent on the location of the ethanol facility, raw material and manufacturing process used [10] as well as consideration of embodied energy in fertilizer, fuel and cap ital equip ment.…”

Section: Introductionmentioning

confidence: 99%

Optimizing the Use of <i>Musa spp.</i> Waste in the Design of an Ethanol Production Plant

Aldonza¹,

Blanchard²

2012

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There is much in the scientific literature regarding the energy value of bioethanol, whether it is sustainable as a transition fuel and what impacts the production could have on food resource availability. This paper addresses these issues through the development of an energy self-sufficient ethanol plant. The plant utilizes waste Musa spp (banana) as the feed stock thereby making no additional demands food production. Solar energy and bioenergy provide thermal and electrical inputs to the process. The energy return on investment for this plant was calculated and a financial model drawn up to determine the economic feasibility of the plant. In one scenario, the operational cost of ethanol production is £0.39/litre with a profit before tax of £44,000 per year for a 460,000 lit re facility. This scenario results in a maximu m selling price for ethanol of £0.45/ litre at an IRR of 11% for a 15 year operation which is comparable to current petrol prices. Furthermore, the process used is very simp le and appropriate for s mall developing countries. The study focuses on the island of St. Lucia which is a banana producing state in the West Indies and concludes that establishment of an ethanol plant is possible with the right financial support with the benefit of reducing imports of petroleu m products, improving the balance of payments and creating emp loyment.

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“…A study carried out in Mexico indicates that the GHG emissions from sugarcane ethanol is 36.8 kgCO 2eq /GJ and in Brazil is 27.5 kgCO 2eq /GJ and indicates that major contributors of these emission are related to farming practices. Different farming practices will have different emissions (García et al, 2011). All other energy used to produce ethanol are from bagasse and biogas, which are both renewable and by-product of sugar and ethanol.…”

Section: Introductionmentioning

confidence: 99%

Environmental and economic study for a prospective ethanol industry in Fiji

Chandra

Hemstock

N’Yeurt

et al. 2017

PIE

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Abstract:The study was performed to study the effect of producing ethanol from molasses or sugarcane juice to blend with gasoline and produce E10 fuel for the Fijian car fleet. Two cases were developed to assess the economic and environmental impacts of producing ethanol from these feedstocks and blending with imported motor spirit. It was found to offer many benefits such as Fiji can earn approximately FJ$ 7.2 million and save 22,730 tCO 2 emissions annually with providing employment to many. The continuous increase in the importation of motor spirit demands the biofuel policy to be reviewed to encourage (E10) blending locally. Conversion of sugarcane juice to ethanol directly could sustain the current income generated from sugar and molasses exported. This sounds to be future solution to sustain the industry after the end of EU sugar quota and if the sugar price offered thereafter are not profitable.

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Life-cycle greenhouse gas emissions and energy balances of sugarcane ethanol production in Mexico

Cited by 96 publications

References 19 publications

A Review of Environmental Life Cycle Assessments of Liquid Transportation Biofuels in the Pan American Region

A Review of Environmental Life Cycle Assessments of Liquid Transportation Biofuels in the Pan American Region

Optimizing the Use of <i>Musa spp.</i> Waste in the Design of an Ethanol Production Plant

Environmental and economic study for a prospective ethanol industry in Fiji

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