Current analysis and future perspective of reduction in worldwide greenhouse gases emissions by using first and second generation bioethanol in the transportation sector

Sydney, Eduardo Bittencourt; Letti, Luiz Alberto Júnior; Karp, Susan Grace; Sydney, Alessandra Cristine Novak; Vandenberghe, Luciana Porto de Souza; Carvalho, Júlio César de; Woiciechowski, Adenise Lorenci; Medeiros, Adriane Bianchi Pedroni; Soccol, Vanete Thomaz; Soccol, Carlos Ricardo

doi:10.1016/j.biteb.2019.100234

Cited by 45 publications

(15 citation statements)

References 24 publications

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“…In this context, the use of biofuels such as bioethanol has emerged as a sustainable alternative to fossil fuels due to numerous advantages, including reduced emission of GHG, hydrocarbons and nitrogen oxides during both bioethanol production and combustion [3]. In this context, many countries have been adopting new policies to promote the use of biofuels, and the market perspectives are a 2-fold increase in Brazil and the USA and a 4-fold increase in China and EU by 2040 [4].…”

Section: Introductionmentioning

confidence: 99%

“…Fermentable sugars are generally extracted from various plants such as corn, sugarcane and sugar beet, which represent the main feedstock used for the actual worldwide ethanol production [6]. However, even if part of the carbon released after the fuel combustion is captured by the crops during their growth, the production of bioethanol from conventional crops, such as sugarcane, corn and sugar beet, can still impact carbon neutrality [4].…”

Section: Introductionmentioning

confidence: 99%

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Optimization of Yeast, Sugar and Nutrient Concentrations for High Ethanol Production Rate Using Industrial Sugar Beet Molasses and Response Surface Methodology

2021

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Among the various agro-industrial by-products, sugar beet molasses produced by sugar refineries appear as a potential feedstock for ethanol production through yeast fermentation. A response surface methodology (RSM) was developed to better understand the effect of three process parameters (concentration of nutrient, yeast and initial sugar) on the ethanol productivity using diluted sugar beet molasses and Saccharomyces cerevisiae yeast. The first set of experiments performed at lab-scale indicated that the addition of 4 g/L of nutrient combined with a minimum of 0.2 g/L of yeast as well as a sugar concentration lower than 225 g/L was required to achieve high ethanol productivities (<15 g/L/d). The optimization allowed to considerably reduce the amount of yeast initially introduced in the fermentation substrate while still maximizing both ethanol productivity and yield process responses. Finally, scale-up assays were carried out in 7.5 and 100 L bioreactors using the optimal conditions: 150 g/L of initial sugar concentration, 0.27 g/L of yeast and 4 g/L of nutrient. Within 48 h of incubation, up to 65 g/L of ethanol were produced for both scales, corresponding to an average ethanol yield and sugar utilization rate of 82% and 85%, respectively. The results obtained in this study highlight the use of sugar beet molasses as a low-cost food residue for the sustainable production of bioethanol.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Optimization of Yeast, Sugar and Nutrient Concentrations for High Ethanol Production Rate Using Industrial Sugar Beet Molasses and Response Surface Methodology

2021

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“…Here, bioethanol is mixed with gasoline in different ratios, where mixtures of 5 and 10 % by volume can be used without any engine modifications. In addition to use as a biofuel, ethanol is also used in the chemical synthesis of ethylene, which has a market demand of 140 million tons per year (Uçkun and Liu, 2015;Sydney et al 2019). As such, the global market for ethanol has increased over the past two decades, reaching 100.2 billion litres in 2016 with a continued predicted increase to 134.5 billion litres by 2024 (Bušić et al 2018).…”

Section: Ethanolmentioning

confidence: 99%

Bread waste – A potential feedstock for sustainable circular biorefineries

Kumar

Brancoli

Narisetty

et al. 2023

Bioresource Technology

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“…The application of bioethanol could contribute to the emission of harmful gases [14]. "Sustainable management of water" Irrigation can have negative consequences for the structure of soil [15].…”

Section: Un 2030 Agenda For Sustainable Development Aspects Of Bioenergy Policymentioning

confidence: 99%

Positioning Bio-Based Energy Systems in a Hypercomplex Decision Space—A Case Study

et al. 2021

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The optimization of the energy portfolio for a small, open, landlocked economy with rather limited fossil resources is a complex task because it must find a long-range, sustainable balance between the various goals of society under the constant pressure of different interest groups. The opinions of independent, informed experts could be an essential input in the decision-making process. The goal of this research was to determine the relative importance of the values and goals potentially accompanying projects, based on the utilization of bioenergy. The current research is based on a wide-ranging survey of 65 non-partisan experts, applying the Pareto analytic hierarchy process to ensure the unbiased prioritization of project segments. The results of the survey put a spotlight on the importance of the economic role of bioenergy projects. Contrary to previous expectations and considerations, the social functions of these projects have hitherto been given relatively little importance. The results highlight the importance of bioenergy in increasing the income-generating capacity of agricultural producers by optimal utilization of natural resources for agricultural production. This can be achieved without considerable deterioration of the natural environment. Modern agricultural production is characterized by high levels of mechanization and automatization. Under these conditions, the social role of bioenergy projects (job creation) is rather limited.

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Current analysis and future perspective of reduction in worldwide greenhouse gases emissions by using first and second generation bioethanol in the transportation sector

Cited by 45 publications

References 24 publications

Optimization of Yeast, Sugar and Nutrient Concentrations for High Ethanol Production Rate Using Industrial Sugar Beet Molasses and Response Surface Methodology

Optimization of Yeast, Sugar and Nutrient Concentrations for High Ethanol Production Rate Using Industrial Sugar Beet Molasses and Response Surface Methodology

Bread waste – A potential feedstock for sustainable circular biorefineries

Positioning Bio-Based Energy Systems in a Hypercomplex Decision Space—A Case Study

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