Avaliação energética da produção de etanol utilizando como matéria-prima a cana-de-açúcar

Salla, Diones Assis; Furlaneto, Fernanda de Paiva Badiz; Cabello, Cláudio; Kanthack, Ricardo Augusto Dias

doi:10.1590/s0103-84782009005000170

Cited by 15 publications

(11 citation statements)

References 2 publications

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“…EC was divided according to three categories, considering the feedstock production (agricultural phase), the ethanol production in distilleries and transport operations. The use of energy in the production of feedstocks includes the preparation of the cultivable area and the cultivation itself, the production and use of inputs, such as mineral fertilizers, alkalizing compounds and soil conditioners, and the harvest (Salla et al, 2009(Salla et al, , 2010a. Fermentation and distillation comprise the main energy-consuming steps in distilleries, in addition to specific feedstock processing steps, such as milling in sugarcane-based and saccharification in corn-and cassava-based plants.…”

Section: Methods and Assumptions Used For The Calculationsmentioning

confidence: 99%

“…The use of starch-based feedstocks as raw materials for the ethanol industry depends on the previous conversion of the starch chains to a solution of readily fermentable sugars on a process known as saccharification, which usually comprises the enzymatic hydrolysis of starch. Although this process is a highly energy-demanding step due to the use of high temperatures, the energy consumption in the steps related with the extraction of juice from sugarcane in high-pressure mills is about 100% greater than in saccharification (Salla et al, 2009).…”

Section: Energy Recovery Capacity Of Methane: Potentials and Limits Imentioning

confidence: 99%

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Bioenergy from stillage anaerobic digestion to enhance the energy balance ratio of ethanol production

Fuess

García

2015

Journal of Environmental Management

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Section: Methods and Assumptions Used For The Calculationsmentioning

confidence: 99%

Section: Energy Recovery Capacity Of Methane: Potentials and Limits Imentioning

confidence: 99%

Bioenergy from stillage anaerobic digestion to enhance the energy balance ratio of ethanol production

Fuess

García

2015

Journal of Environmental Management

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“…The discussed results are indicative that the energy balance of sweet potato -considering its average production and the energy efficiency of the aerial part of the plant -, is similar or greater to that of sugarcane for ethanol production, according to Macedo et al (2008) and Salla et al (2009), respectively; in all scenarios, the energy balances for sweet potato, even when the biomass of the aerial part of the plant was not taken into account, are much greater than those obtained by Salla & Cabello (2010) for corn.…”

Section: Resultsmentioning

confidence: 96%

“…Macedo et al (2008), for example, found an average of 8.3 for 82 Mg ha -1 stalks in the 2002 crop season, based on the energy efficiency of the produced ethanol and of the stalk biomass used as a source for combustion furnaces. Salla et al (2009) reported a value of 1.1 for 85 Mg ha -1 , considering only the efficiency of the produced ethanol. Regarding the production of ethanol from corn, in Brazil, the energy index is 1.19 for 6 Mg ha -1 , also considering only the energy efficiency of the produced ethanol (Salla & Cabello, 2010).…”

Section: Resultsmentioning

confidence: 99%

Energy and budget balances for sweet potato-based ethanol production

Silva

Gonçalves

Maluf

et al. 2019

Pesq. agropec. bras.

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How to cite SILVA, L.F.L. e; GOnçALVES, W.M.; MALUF, W.R.; RESEnDE, L.V.; LASMAR, A.; CARVALHO, R. de C.; LICURSI, V.; MOREttO, P. Energy and budget balances for sweet potato-based ethanol production.Abstract -The objective of this work was to assess the viability of sweet potato (Ipomoea batatas) for ethanol production, as well as to estimate the energy and budget balances for the crop. Data from the agricultural and industrial production phases were evaluated. Those from the agricultural phase were estimated from a field experiment and used for comparison of sweet potato genotypes. Those from the industrial phase were estimated based on the literature on the fossil fuel energy and electricity consumed in the ethanol production process. With average yields of 35 Mg ha -1 roots and 12 Mg ha -1 dry stems, the output/input ratios were 6.64 and 1.93 for the energy and budget balances, respectively. For yields of 50 and 80 Mg ha -1 roots (17 and 27 Mg ha -1 dry stems, respectively), the indexes for energy balance were 7.16 and 7.68, respectively, and those for energy budget were 2.76 and 4.42. The obtained results confirm the great aptitude of the sweet potato crop for biofuel production.

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“…Estudos energéticos diferenciam-se das análises econômicas, pois permitem estimar a energia diretamente consumida e/ou indiretamente utilizada em um processo produtivo (SALLA et al 2009). Em indústrias sucroalcooleiras os índices de eficiência podem ser observados nos trabalhos de Schirmer (2006), que verificou os indicadores de eficiência energética e exergética em duas indústrias do setor sucroalcooleiro, essaltando no setor a necessidade do uso racional da energia como fator de modernização e diversificação.…”

Section: Introductionunclassified

Análise Estatística De Parâmetros Elétricos Em Usinas Sucroalcoleiras Do Centro-Oeste Paulista

Halmeman

Filho²,

Seraphim³

et al. 2013

EnergAgric

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RESUMO:A indústria da cana-de-açúcar tornou-se um importante colaborador na geração de energia elétrica no Brasil. Atualmente há 434 usinas de açúcar e etanol em operação no país e deste total 23% exportam energia elétrica para o Sistema Integrado Nacional (SIN). No estado de São Paulo há 182 usinas e 30% delas exportam energia para o sistema. O objetivo deste trabalho é comparar parâmetros de eficiência elétrica no setor sucroalcooleiro. Para o estudo, foram escolhidas três usinas com grande potencial de produção e exportação de açúcar e etanol da região centro-oeste do estado de São Paulo. Foram utilizados, para aferição de parâmetros elétricos, cinco analisadores de energia LANDYS+GYR SAGA. As variáveis analisadas foram a energia consumida (C) e Fator de Potência (FP). Para a análise estatística, adotou-se o delineamento de blocos casualizados, em arranjo fatorial 3 × 5, composto das três empresas sucroalcoleiras e cinco setores de consumo energético sendo: recepção (1), moagem (2), caldeiras (3), atividades auxiliares/tratamento de caldo (4) e destilaria (5) totalizando 15 tratamentos, sendo cada grupo composto por 192 repetições (48 horas × 4 aferições por hora). Conclui-se que não há uma preocupação por parte das usinas em corrigir o (FP) e atingir o valor de 0,92, que é considerado o fator de potência ideal, visto que as usinas, por gerarem sua própria energia, não são penalizadas pelas concessionárias por apresentarem valores abaixo do recomendado. Em relação à energia consumida todos os setores apresentam diferenças significativas. Na comparação setor a setor, a usina denominada USB apresentou diferenças não significativas nos setores 1 e 3 e a usina USC nos setores 1 e 4. Considerando as unidades produtoras do setor sucroalcooleiro e que vendem energia elétrica esse tipo de avaliação é essencial realizar essa analise, uma vez que os setores analisados são os mais importantes na produção do açúcar e etanol, e analisar e acompanhar esses parâmetros de uso e consumo de energia pode propiciar maior oferta de energia a ser comercializada. PALAVRAS-CHAVE:analisadores de energia, fator de potência, energia consumida. STATISTICS ANALYSES OF THE ELECTRIC PARAMETERS IN SUGAR CANE PLANTS AT CENTRAL WEST OF SAO PAULO STATEABSTRACT: The industry of sugar cane has become an important contributor to the generation of electricity in Brazil. Currently there are 434 sugar and ethanol plants operating in the country, 23% of the total export electricity to the National Integrated System (SIN), the state of São Paulo has 182 plants and 30% of them export energy to the SIN. The objective of this study is to compare parameters of electrical efficiency in the sugar and alcohol industry. For the study, three plants localized in the midwest region of Sao Paulo state with great potential for production and exporting bioenergy were chosen. Five energy analyzers LANDYS + GYR SAGA were used for measure the electrical parameters. The variables studied were energy consumption (C) and power factor (PF). For the statistical analysis it...

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Avaliação energética da produção de etanol utilizando como matéria-prima a cana-de-açúcar

Abstract: Avaliação energética da produção de etanol utilizando como matéria-prima a cana-de-açúcar

Cited by 15 publications

References 2 publications

Bioenergy from stillage anaerobic digestion to enhance the energy balance ratio of ethanol production

Bioenergy from stillage anaerobic digestion to enhance the energy balance ratio of ethanol production

Energy and budget balances for sweet potato-based ethanol production

Análise Estatística De Parâmetros Elétricos Em Usinas Sucroalcoleiras Do Centro-Oeste Paulista

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