Fuel ethanol production from sugarcane and corn: Comparative analysis for a Colombian case

Quintero, Julián; Montoya, María Isabel Villa; Sánchez, Óscar J.; Giraldo, Óscar; Cardona, Carlos A.

doi:10.1016/j.energy.2007.10.001

Cited by 283 publications

(145 citation statements)

References 18 publications

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“…Among various options, conversion of abundant lignocellulosic biomasses to biofuels has received significant attention. Currently, bio-ethanol production from corn and sugarcane has posed a threat to the food supply (Guragain et al 2011), and the cost of these raw materials accounts for up to 40 to 70% of the production cost (Quintero et al 2008). Lignocellulosic biomass serves as a cheap and abundant feedstock (Balat 2011), in it has the potential to produce low-cost bio-ethanol at a large scale.…”

Section: Introductionmentioning

confidence: 99%

Relationship between Crystallinity Index and Enzymatic Hydrolysis Performance of Celluloses Separated from Aquatic and Terrestrial Plant Materials

Li¹,

Zhou²,

Wu³

et al. 2014

BioResources

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a Hydrolysis experiments of five cellulose samples (separated from two aquatic plants and three terrestrial plants, respectively) were conducted at various cellulase loadings (7 to 200 FPU/g cellulose). No obvious correlation was found between CrI and hydrolysis performance at low enzyme loadings (e.g. 7 and 28 FPU/g cellulose), as the hydrolysis was controlled by enzyme availability and the differences in cellulose structure were unimportant. At a sufficiently high enzyme loading (e.g. 200 FPU/g cellulose), the yield of reducing sugar was linearly proportional to the CrI value. Therefore, to establish such a correlation between cellulose structure and hydrolysis performance, hydrolysis experiments must be conducted under the conditions where enzyme availability is not a limiting factor. It was found that celluloses from sugarcane bagasse and water hyacinth have low CrI, achieve high sugar yields, exhibit fast reactions during enzymatic hydrolysis at low enzyme loadings, and can potentially be good feedstocks for bio-ethanol production.

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Section: Introductionmentioning

confidence: 99%

Relationship between Crystallinity Index and Enzymatic Hydrolysis Performance of Celluloses Separated from Aquatic and Terrestrial Plant Materials

Li¹,

Zhou²,

Wu³

et al. 2014

BioResources

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“…More pertinently, there are a number of countries and regions of the world where the ethanol sector is in the process of being developed on a large scale. These include India and Colombia (see Lapola et al, 2009;Quintero et al, 2008), which have stocks of natural forest vulnerable to deforestation and, along with Brazil, would form interesting case studies for further research. Such studies could then be used to derive more concrete policy implications to show under what conditions ethanol production could be expanded while minimising negative impacts on deforestation and food production.…”

Section: Discussionmentioning

confidence: 99%

Ethanol Production, Food and Forests

Sá

Palmer

Engel

2011

Environ Resource Econ

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This paper investigates the direct and indirect impacts of ethanol production on land use, deforestation and food production. A partial equilibrium model of a national economy with two sectors and two regions, one of which includes a residual forest, is developed. It analyses how an exogenous increase in the ethanol price affcts input allocation (land and labor) between sectors (energy crop and food). Three potential effects are identified. First, the standard and well-documented effect of direct land competition between rival uses increases deforestation and decreases food production. Second, an indirect displacement of food production across regions, provoked by a shift in the price of food, increases deforestation and reduces the total output of the food sector. Finally, labor mobility between sectors and regions tends to decrease food production but also deforestation. The overall impact of ethanol production on forest conversion is ambiguous, providing a number of interesting pointers to further, empirical research. Abstract This paper investigates the direct and indirect impacts of ethanol production on land use, deforestation and food production. A partial equilibrium model of a national economy with two sectors and two regions, one of which includes a residual forest, is developed. It analyses how an exogenous increase in the ethanol price a¤ects input allocation (land and labor) between sectors (energy crop and food). Three potential e¤ects are identi…ed. First, the standard and well-documented e¤ect of direct land competition between rival uses increases deforestation and decreases food production. Second, an indirect displacement of food production across regions, provoked by a shift in the price of food, increases deforestation and reduces the total output of the food sector. Finally, labor mobility between sectors and regions tends to decrease food production but also deforestation. The overall impact of ethanol production on forest conversion is ambiguous, providing a number of interesting pointers to further, empirical research.JEL classi…cation: Q11, Q24, Q42

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“…Molasses obtained from sugar cane are the most important raw material for the purposes of bioethanol production. In recent years, however, there have been rising prices and restrictions on the availability of molasses, which have strongly influenced the production of bioethanol (Quintero et al, 2008). Figure 3 shows the flow chart for bioethanol, energy and sugar production from sugar cane.…”

Section: Sugar Cane (Saccharum Officinarum)mentioning

confidence: 99%