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A study of single-step hydrolysis of bagasse with concentrated sulphuric acid for obtaining ethanol and in a modified single step and corresponding technical-economic analysis
Estudio de la hidrolisis del bagazo con ácido sulfúrico concentrado utilizando dos variantes de una sola etapa y una sola etapa modificada para la obtención de etanol y análisis técnico-económico de dicho proceso
DOI:
https://doi.org/10.15446/ing.investig.v25n3.14660Keywords:
bagasse hydrolysis with concentrated acid, ethanol, cost, economic feasibility (en)hidrólisis bagazo con ácido concentrado, etanol, costo, factibilidad económica (es)
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This work deals with acid hydrolysis of bagasse in just one step and in a modified step using concentrated sulphuric acid. The study analysed the influence of three independent variables on the single-step process (reaction time, solid percentage of bagasse and temperature). The highest conversion obtained in single-step hydrolysis was 87.65% fermentative sugars, using 70% sulphuric acid with 2% solids at 50ºC for 1 hour. The modified process was carried out based on these results; 97.5% maximum conversion of fermentative sugars was achieved using 30% acid dilution. Concentrated sulphuric acid single-stage hydrolysis of bagasse and in a single modified stage were subjected to technical-economic analysis. Starting from the results obtained experimentally of the process at laboratory level and elevated to a possible plant with a capacity to produce 800 HL alcohol/day. VAN and PRD indices indicated that single-stage concentrated acid hydrolysis Variant 1) having 8,310,659.27 VAN and 3 year PRD was more feasible than the modified process (variant 2) having 3,293,318.69 VAN and 7 year PRD.
En este trabajo se realiza a escala de laboratorio el proceso de hidrólisis ácida del bagazo utilizando ácido sulfúrico concentrado en una sola etapa y en una etapa modificada. En el estudio se analizó la influencia de tres variables independientes: tiempo de reacción, porcentaje de sólidos del bagazo y la temperatura sobre el proceso en una sola etapa. La máxima conversión obtenida para la hidrólisis en una etapa fue de 87,65% de azúcares fermentables utilizando ácido sulfúrico al 70%, 2% de sólidos y una temperatura de 50ºC durante 1 hora de reacción. A partir de estos resultados se realizó el proceso modificado obteniéndose una conversión máxima de 97,5% de azúcares fermentables a una dilución del ácido al 30%. Se realizó además un análisis técnico-económico de ambas variantes partiendo de los resultados experimentales obtenidos en cada proceso; los valores fueron calculados para una futura planta con capacidad de producir 800 HL de alcohol/día. Los índices VAN Y PRD indicaron que la hidrólisis ácida concentrada en una sola etapa (variante 1) con un VAN de 8310659.27 y un PRD de tres años es más factible que el proceso modificado (variante 2) con un VAN de 3293318.69 y un PRD de siete años.
References
Badger Engineers, Inc. " Economic feasibility study of an acid-based ethanol plant". SERI subcontract, No, ZX-3030-96-2, Badger Engineers, Inc., One Broadway, Cambridge, MA 02142, 1989.
Clausen E.; Gaddy, J. "Concentrated sulfuric acid process for converting lignocellulosic materials to sugars". US Patent, No. US188673A, Fayetteville, Ark, 472701, Feb. 23,1998.
Cunningham, R.; López, G. "Etanol de lignocelulósicos: tecnología y perspectivas", Santiago de Compostela, Universidad, Servicio de publicación e intercambio científico (Santa Fe, Argentina), Programa CYTED, 1994.
Chem Systems Inc. "Process design and economics for ethanol from corn stover via dilute hydrolysis". DOA subcontract, No. BK-9-8281 -01, Tarrytown, NY, Feb. 1983.
Farone, William A.; Cuzens, John E. "Method of producing sugars using strong acid hydrolysis of cellulosic and hemicellulosic materials", US Patent, No. US5,562,777, Arkenol, Inc. (Las Vegas, NV), October 8, 1999.
Gunasekaran P and K. Chandra Raj, "Ethanol fermentation technology". Department of Microbial Technology, School of Biological Sciences, Madurai Kamaraj University, Madurai 625 021, India, 2000.
Lope G. Tabil, A. Opoku, Sudhagar Mani. "Ethanol from agricultural crop residues-An overview". Department of Agricultural and Bioresource Engineering, University of Saskatcheman, September 2002.
Max, S. Peters; Klaus, D. Timmerraus. "Plant design and economics for chemical engineers". Second edition, 1968.
Solar Energy Research Institute. "Fuel alcohol technical and economic evaluation". Draft, Golden, Co. February 1998.
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Copyright (c) 2005 Boutros Fouad Sarrouh, Josefina Jover, Ernio González
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