Ethanol production from sugarcane bagasse: Use of different fermentation strategies to enhance an environmental-friendly process

Guilherme, A. De A.; Dantas, Paulo Victor Fortunato; Padilha, Carlos Eduardo de Araújo; Santos, Everaldo Silvino dos; Macêdo, Gorete Ribeiro de

doi:10.1016/j.jenvman.2018.12.102

Cited by 62 publications

(19 citation statements)

References 32 publications

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“…Enzymatic hydrolysis is an environmentally friendly technique that uses milder processing conditions than chemical hydrolysis. Acid or alkaline hydrolysis processes can lead to the formation of sugar by-products that inhibit fermentation microorganisms, such that further detoxification processes are needed (de Araujo Guilherme et al 2019). Improving the sugar yield of enzymatic hydrolysis requires a pretreatment step to break down the recalcitrant aspects of the lignocellulosic biomass (Sharma et al 2019).…”

Section: Importance Of Pretreatmentmentioning

confidence: 99%

Toward sustainable processes of pretreatment technologies of lignocellulosic biomass for enzymatic production of biofuels and chemicals: A review

Ethaib

Omar

Kamal

et al. 2020

BioRes

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Lignocellulosic biomass is a class of sustainable material that can be utilized as a raw feedstock in biofuel and chemical production. However, the complex matrix structure of lignocellulosic materials complicates conversion processes, such as enzymatic hydrolysis. Therefore, an efficient pretreatment process is required to disrupt the plant cell wall structure and maximize the recovery of valuable soluble components from lignocellulosic biomass during hydrolysis. In addition, an effective pretreatment method should use the minimum necessary amounts of energy and chemicals to minimize the cost of the end product. Further, it should reduce the formation of inhibitory compounds that affect enzymes and microorganisms during hydrolysis and fermentation, and it should be applicable to a wide variety of feedstocks. The research presented in this review has highlighted the pros and cons of the current technologies employed in pretreatment processes. Further study should be done to optimize and improve these technologies to enhance the efficiency of the production of biofuels and other valuable components.

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Section: Importance Of Pretreatmentmentioning

confidence: 99%

Toward sustainable processes of pretreatment technologies of lignocellulosic biomass for enzymatic production of biofuels and chemicals: A review

Ethaib

Omar

Kamal

et al. 2020

BioRes

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“…Os processos fermentativos podem acontecer através de diversos procedimentos, nos quais os mais utilizados são a "Hidrólise e fermentação separadas" (SHF) e a "Sacarificação e fermentação simultâneas" (SSF). De acordo com, 38 quando se faz necessária a otimização dos processos de sacarificação e fermentação em condições ótimas de pH, temperatura e configuração dos equipamentos, neste caso utiliza-se o método SHF. Quando o procedimento privilegia a utilização dos mesmos equipamentos com o objetivo de redução do tempo e custo de produção, diminuição dos riscos de contaminação por microrganismos, aumento da produtividade do processo de produção do etanol, o método mais apropriado é o SSF.…”

Section: Processos Fermentativosunclassified

Ethanol Production from Waste of Paper Industry

Santos

Brito²,

Santos³

et al. 2020

Rev. Virtual Quim.

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The need to increase the share of renewable energy sources in the composition of the world energy matrix has stimulated several researchers in the search for new economically viable and environmentally sustainable technologies. The bioethanol produced from lignocellulosic biomass, emerges as a promising technology, due to their character, renewable, abundant and low cost of processing. The production of lignocellulosic bioethanol involves processes ranging from saccharification of cellulose and hemicellulose present in the biomass and conversion to ethanol by the action of fermentative microorganisms. The aim of this work was to study the processes of enzymatic saccharification and fermentation of waste paper to obtain bioethanol. Simultaneous Saccharification and Fermentation (SSF) ethanol production was performed for 16 hours with Cellic CTec2 β-glucosidase enzyme cocktail, with a concentration of 70 FPU/g, and at pH 4.8. The commercial yeast Saccharomyces cerevisiae (Fleischmann) was used. The results showed the conversion of the cellulose industry waste into reducing sugars at 39.44 ± 2,41g g-1 , corresponding to 65 ± 4,12% of the available cellulose yield, achieving a yield of 9.16 ± 0,98g L-1 ethanol and 77% fermentative efficiency. A necessidade de aumentar a participação de fontes de energia renovável na composição da matriz energética mundial tem estimulado diversos pesquisadores na busca por novas tecnologias economicamente viáveis e ambientalmente sustentáveis. O bioetanol, produzido a partir da biomassa lignocelulósica, desponta como tecnologia promissora, devido ao seu caráter renovável e abundante. A obtenção de bioetanol lignocelulósico envolve processos de sacarificação da celulose e da hemicelulose presentes na biomassa, até a sua conversão em etanol por ação de microrganismos fermentativos. O objetivo deste trabalho foi estudar os processos de sacarificação enzimática e fermentação em resíduos de papel para obtenção de bioetanol. A produção de etanol pelo procedimento de sacarificação e fermentação simultâneas (SSF-Simultaneous saccharification and fermentation) foi realizado por 16 horas, utilizando coquetel enzimático β-glucosidase Cellic CTec2, com concentração de 70 FPU/g, e em pH 4,8. Foi utilizada a levedura comercial Saccharomyces cerevisiae (Fleischmann). Os resultados apresentaram a conversão dos resíduos da indústria de celulose em açúcares redutores em 39,44 ± 2,41g g-1 , correspondente a 65 ± 4,12% do rendimento de celulose disponível, alcançando um rendimento de 9,16 ± 0,98 g L-1 de etanol e eficiência fermentativa de 77%.

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“…Alcohols, such as methanol and especially ethanol, have attracted many research groups [25,26]. Methanol production is very limited [27,28], while ethanol, on the other hand, can be manufactured straightforwardly by the fermentation of sugar from a wide variety of sources [29][30][31]. Ethanol is gaining more attention as it has superior octane number, approximately 108, and is thus often mixed with the gasoline to improve its properties quality [32,33].…”

Section: Introductionmentioning

confidence: 99%

Improved Performance, Combustion and Emissions of SI Engine Fuelled with Butanol: A Review

Veza¹,

Said²,

Latiff³

2020

IJAME

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Several studies on ethanol as a biofuel have been comprehensively carried out. Today, a growing interest in longer chain alcohols has emerged due to their favourable physical and thermodynamic properties. Butanol or butyl alcohol with 4-carbon structure (C4H9OH) is a more promising biofuel as it outweighs methanol and ethanol in several ways. The production cost of butanol has been gradually reduced, and rapid progress in the development of its production technology has allowed butanol to be produced more effectively. However, studies on the effect of butanol on gasoline or spark ignition (SI) engines are not as comprehensive as the abundant research of ethanol. This paper highlights recent novelty and contribution of butanol addition in SI engine. Results of new approaches on the engine’s performance, combustion and emission characteristics are summarised. Reviews from this paper suggest that there are some gaps in the addition of butanol found in the literature. Thus, several encounters and forthcoming research directions are outlined in the final section of this review article, highlighting several possible contributions that have not yet been carried out using butanol as a biofuel in a gasoline engine.

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Ethanol production from sugarcane bagasse: Use of different fermentation strategies to enhance an environmental-friendly process

Cited by 62 publications

References 32 publications

Toward sustainable processes of pretreatment technologies of lignocellulosic biomass for enzymatic production of biofuels and chemicals: A review

Toward sustainable processes of pretreatment technologies of lignocellulosic biomass for enzymatic production of biofuels and chemicals: A review

Ethanol Production from Waste of Paper Industry

Improved Performance, Combustion and Emissions of SI Engine Fuelled with Butanol: A Review

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