Review of design works for the conversion of sugarcane to first and second-generation ethanol and electricity

Bechara, Rami; Gomez, Adrien; Saint-Antonin, Valérie; Schweitzer, Jean‐Marc; Maréchal, François; Ensinas, Adriano V.

doi:10.1016/j.rser.2018.02.020

Cited by 32 publications

(17 citation statements)

References 62 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…After the extraction of sugarcane juice, the produced bagasse is used for steam and bioelectricity generation. Although the sugarcane ethanol industry is energy intensive, the combustion of bagasse allows the whole processing plant to be self-sufficient and the energy surplus can be exported as a commercial coproduct [14]. In front of the excess of bagasse, technologies are being developed in order to hydrolyse the lignocellulose fraction and enable its conversion in ethanol through fermentation, producing second-generation (2G) ethanol.…”

Section: Introductionmentioning

confidence: 99%

“…In medium term, the actual state of the art foresees the use of bagasse for bioelectricity generation or incremental production of ethanol. As reviewed by Bechara et al [14], many researches assessed the economic or technical improvements in single or global processes in sugarcane distilleries regarding the conversion of sugarcane to first-and second-generation ethanol and bioelectricity. The process designs are usually modelled on specific process simulators followed by the implementation of global optimization tools in other computational environment, such as MATLAB or Excel.…”

Section: Introductionmentioning

confidence: 99%

“…Thus, caution must be taken when selecting the inventory database to describe a process as they can be linked to a specific region or may embrace boundaries that include partially the life cycle of an object. Statistical or sensitivity analysis is commonly employed together with LCA studies, using tools such as Monte Carlo analysis [25,27] or response surface methodology (RSM) coupled with design of experiments [14].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Modelling of a Brazilian ethanol plant: impact of the bagasse use and the ethanol dehydration on energy efficiency and sustainability

Filho

Pradelle

2020

J Braz. Soc. Mech. Sci. Eng.

View full text Add to dashboard Cite

Ethanol has a large share in Brazilian primary energy consumption and plays a significant role in the mitigation of the emissions from combustion engines, as national regulations advance towards increasing anhydrous ethanol content in gasoline or by the direct use of hydrated ethanol as fuel. A simulation of a sugarcane ethanol plant with a regular yield of 85.3 L of ethanol per ton of cane was carried out. The investigated process starts from the cultivation of sugarcane to the production of hydrated and/or anhydrous ethanol. The study considered that bagasse can be either burnt for cogeneration or used as feedstock for the enzymatic hydrolysis system. Additionally, alternative energy sources (such as natural gas (NG) burnt in a boiler or electricity from the Brazilian National Interconnected System (NIS)) are considered in order to cover the domestic demand in cases where biomass lacked for energy purposes. Net energy ratio (NER), fossil energy ratio (FER) and total CO 2 emission were modelled through central composite designs to assess scenarios in which the fraction of bagasse sent to hydrolysis (x 1) and hydrated ethanol sent to dehydration (x 2) both varied between 0 and 100%. The application of statistical tools (ANOVA, Student's t test and R 2) showed that x 1 caused significant variations on the investigated parameters, while x 2 proportioned mild effects. NER varied in the range 0.795-0.984, with an optimal value being found at (x 1 , x 2) equal to (81.82, 0) and (36.67, 0) when the system is coupled to NIS and a NG boiler, respectively. FER was verified as high as 11.910 with energy from NIS to produce hydrated ethanol with maximal cogeneration from the bagasse. It diminished to 3, when around 40% of bagasse is sent to enzymatic hydrolysis instead for the cogeneration system and NG complements the domestic demand.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Modelling of a Brazilian ethanol plant: impact of the bagasse use and the ethanol dehydration on energy efficiency and sustainability

Filho

Pradelle

2020

J Braz. Soc. Mech. Sci. Eng.

View full text Add to dashboard Cite

show abstract

“…13 Além disso, a conversão do caldo da cana-de-açúcar, do bagaço e de sua palha em formas de energia tal como o etanol 1G e 2G e eletricidade, é um esforço contínuo e necessário para expandir as políticas de energia limpa. 14 As características complexas das fibras da biomassa lignocelulósica necessitam de prétratamentos para desassimilação dos açúcares fermentáveis para torná-los disponíveis. São vários os pré-tratamentos empregados, sendo os principais o pré-tratamento químico por meio de ácidos e bases diluídos, pré-tratamento de explosão a vapor, e pré-tratamento enzimático.…”

Section: Introductionunclassified

Pre-treatment of steam explosion, chemical and morphological characterization of sugarcane bagasse used for 2G Ethanol production

Barbosa¹,

Silva²,

Santos³

et al. 2020

Rev. Virtual Quim.

View full text Add to dashboard Cite

Biofuels industries have made great efforts to establish the best pretreatment of lignocellulosic biomass for 2G-ethanol production. Therefore, this work, sugarcane bagasse (BCA), employed to the pre-treatment of steam explosion in an autoclave reactor at 120 °C. The chemical characterization performed by high performance liquid chromatography and morphological analyzes by spectroscopic techniques (FTIR and XRD). The evaluated pretreatment revealed changes in chemical and structural composition biomass with cellulose mass percentage of 37.51 and hemicellulose 21.32 in the untreated BCA for 30.82 cellulose and 17.14 of hemicellulose in the pre-treated BCA. The fractions cellulose and hemicelluloses decreased after pretreatment, suggesting generation other products as furfural, hydroxymethylfurfural, acetic acid and formic acid. The FTIR and XRD spectroscopy analyzes showed structural differences between the complexity of the untreated and pretreated biomass. Therefore, the results suggest that the pretreatment results in the breakdown of the biomass fibers. As indústrias de biocombustíveis têm empenhado grande esforço para estabelecer o melhor prétratamento da biomassa lignocelulósica para produção de etanol de segunda geração. Portanto, neste trabalho, o bagaço da cana-de-açúcar (BCA), foi submetido ao pré-tratamento de explosão a vapor em reator autoclave a 120 °C por 45 min. A caracterização química foi realizada por cromatografia líquida de alta eficiência e as análises morfológicas por técnicas espectroscópicas (FTIR e DRX). O pré-tratamento avaliado revelou mudanças na composição química e estrutural da biomassa com porcentagem mássica de celulose de 37,51 e hemiceluloses 21,32 no BCA não tratado para 30,82 de celulose e 17,14 de hemiceluloses no BCA pré-tratado. As frações de celulose e hemiceluloses diminuíram após o pré-tratamento, produzindo outros produtos como furfural, hidroximetilfurfural, ácido acético e ácido fórmico. As análises por espectroscopia FTIR e DRX indicaram diferenças estruturais entre a complexidade da biomassa não tratada e pré-tratada. Portanto, os resultados indicam que o pré-tratamento resulta em desorganização das fibras que constituem a biomassa.

show abstract

“…The United States through corn and Brazil through sugarcane are the main producers of first generation ethanol. However, although the technology used for converting these raw materials is well established, they compete with the food chain, leading to the need to find other alternative sources of energy [2,3].…”

Section: Introductionmentioning

confidence: 99%

Morphological and Chemical Analysis of the Molecularly-Imprinted Polymer-Based D-Arabinose Sensor on a Modified Electrode with Functionalized Carbon Nanotubes

Sousa

Ferretti

Kneeteman

et al. 2019

The 23rd International Electronic Conference on Synthetic Organic Chemistry

View full text Add to dashboard Cite

The sensors modified carbon nanotubes and molecularly imprinted polymers are an excellent choice for the determination of D-arabinose, because they have high selectivity and sensitivity for analysis. This allows the control and optimization of the second generation ethanol production process, given the clear understanding of the chemical changes that occur through the hydrolysis of lignocellulosic biomass. For this reason, the present work presents a chemical study of the functional groups of the chemical species present on the sensor surface by the Fourier transform infrared spectroscopy (FT-IR) technique and a morphological analysis by the scanning electron microscopy (SEM) technique.

show abstract

Review of design works for the conversion of sugarcane to first and second-generation ethanol and electricity

Cited by 32 publications

References 62 publications

Modelling of a Brazilian ethanol plant: impact of the bagasse use and the ethanol dehydration on energy efficiency and sustainability

Modelling of a Brazilian ethanol plant: impact of the bagasse use and the ethanol dehydration on energy efficiency and sustainability

Pre-treatment of steam explosion, chemical and morphological characterization of sugarcane bagasse used for 2G Ethanol production

Morphological and Chemical Analysis of the Molecularly-Imprinted Polymer-Based D-Arabinose Sensor on a Modified Electrode with Functionalized Carbon Nanotubes

Contact Info

Product

Resources

About