Artigos
Publicado 2019-01-16
Palavras-chave
- hemicellulose,
- pirólise,
- sulfato férrico,
- sulfato de zinco,
- catálise
Como Citar
Albis, A., Osorio, J., Monsalvo, J., & Ortiz, Éver. (2019). Pirólise de hemicelulose catalisada por sulfato de zinco e sulfato férrico. REVISTA ION, 31(2). https://doi.org/10.18273/revion.v31n2-2018003
Resumo
Recorrendo à utilização da técnica de análise termogravimétrica, foi estudado o efeito catalítico de sulfato férrico e sulfato de zinco sobre a pirólise de hemicelulose. Os termogramas de pirólise de hemicelulose pura e misturada com estes catalisadores foram obtidos na concentração de 3 % em peso em velocidades de aquecimento de 10, 30 e 100 K/min. O efeito dos catalisadores e a taxa de aquecimento sobre a forma de termogramas, a temperatura de pico DTG de eventos de perda de peso e os parâmetros cinéticos do processo foram analisados. Os resultados foram ajustados para três modelos cinéticos diferentes. A presença desses sais muda grandemente as formas de termogramas e a temperatura de pico DTG em relação à os correspondentes termogramas de hemicelulose puros. Os dados dos três sistemas foram bem modelados pelo padrão de distribuição de energias de ativação, DAEM. A partir da comparação destes e os respectivos resultados do modelo de decomposição proposto na literatura, pode-se inferir que os sulfatos objeto de estudo catalisam reações de desidratação/fragmentação e despolimerização de hemicelulose.
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Referências
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[2] Sonobe T, Worasuwannarak N. Kinetic analyses of biomass pyrolysis using the distributed activation energy model. Fuel. 2008;87(3):414-21.
[3] Wang S, Guo X, Wang K, Luo Z. Influence of the interaction of components on the pyrolysis behavior of biomass. J. Anal. Appl. Pyrolysis. 2011;91(1):183-9.
[4] Worasuwannarak N, Sonobe T, Tanthapanichakoon W. Pyrolysis behaviors of rice straw, rice husk, and corncob by TG-MS technique. J. Anal. Appl. Pyrolysis. 2007;78(2):265-71.
[5] Granada E, Eguía P, Comesaña J, Patiño D, Porteiro J, Miguez J. Devolatilization behaviour and pyrolysis kinetic modelling of Spanish biomass fuels. J. Therm. Anal. Calorim. 2013;113(2):569-78.
[6] Gani A, Naruse I. Effect of cellulose and lignin content on pyrolysis and combustion characteristics for several types of biomass. Renew. Energy. 2007;32(4):649-61.
[7] Yang H, Yan R, Chen H, Lee DH ,Zheng C. Characteristics of hemicellulose, cellulose and lignin pyrolysis. Fuel. 2007;86(12):1781-8.
[8] Lv D, Xu M, Liu X, Zhan Z, Li Z, Yao H. Effect of cellulose, lignin, alkali and alkaline earth metallic species on biomass pyrolysis and gasification. Fuel Process. Technol. 2010;91(8):903-9.
[9] Khelfa A, Bensakhria A, Weber J. Investigations into the pyrolytic behaviour of birch wood and its main components: primary degradation mechanisms, additivity and metallic salt effects. J. Anal. Appl. Pyrolysis. 2013;101:111-21.
[10] Zhang H, Xiao R, Jin B, Xiao G, Chen R. Biomass catalytic pyrolysis to produce olefins and aromatics with a physically mixed catalyst. Bioresour. Technol. 2013;140:256-62.
[11] Richards GN, Zheng G. Influence of metal ions and of salts on products from pyrolysis of wood: applications to thermochemical processing of newsprint and biomass. J. Anal. Appl. Pyrolysis. 1991;21(1-2):133-46.
[12] Dobele G, Rossinskaja G, Dizhbite T, Telysheva G, Meier D, Faix O. Application of catalysts for obtaining 1, 6-anhydrosaccharides from cellulose and wood by fast pyrolysis. J. Anal. Appl. Pyrolysis. 2005;74(1):401-05.
[13] Albis A, Ortiz E, Suárez A, Piñeres I. TG/MS study of the thermal devolatization of Copoazú peels (Theobroma grandiflorum). J. Therm. Anal. Calorim. 2014;115(1):275-83.
[14] Martín-Lara M, Blázquez G, Zamora M, Calero M. Kinetic modelling of torrefaction of olive tree pruning. Appl. Therm. Eng. 2017;113:1410-8.
[15] Açıkalın K. Pyrolytic characteristics and kinetics of pistachio shell by thermogravimetric analysis. J. Therm. Anal. Calorim. 2011;109(1):227-35.
[16] Abdelouahed L, Leveneur S, Vernieres-Hassimi L, Balland L, Taouk B. Comparative investigation for the determination of kinetic parameters for biomass pyrolysis by thermogravimetric analysis. J. Therm. Anal. Calorim. 2017:1-13.
[17] Chen N, Ren J, Ye Z, Xu Q, Liu J, Sun S. Kinetics of coffee industrial residue pyrolysis using distributed activation energy model and components separation of bio-oil by sequencing temperature-raising pyrolysis. Bioresour. Technol. 2016;221:534-40.
[18] Cheng Z, Wu W, Ji P, Zhou X, Liu R, Cai J. Applicability of Fraser–Suzuki function in kinetic analysis of DAEM processes and lignocellulosic biomass pyrolysis processes. J. Therm. Anal. Calorim. 2015;119(2):1429-38.
[19] Donskoi E, McElwain D. Optimization of coal pyrolysis modeling. Combustion and Flame. 2000;122(3):359-67.
[20] Janković B. The pyrolysis process of wood biomass samples under isothermal experimental conditions—energy density considerations: application of the distributed apparent activation energy model with a mixture of distribution functions. Cellulose. 2014;21(4):2285-314.
[21] Várhegyi G. Aims and methods in non-isothermal reaction kinetics. J. Anal. Appl. Pyrolysis. 2007;79(1):278-88.
[22] Várhegyi G, Szabó P, Antal MJ. Kinetics of charcoal devolatilization. Energy & fuels. 2002;16(3):724-31.
[23] Collard F-X, Blin J. A review on pyrolysis of biomass constituents: Mechanisms and composition of the products obtained from the conversion of cellulose, hemicelluloses and lignin. Renew. Sustain. Energy Rev. 2014;38:594-608.
[24] Dorez G, Ferry L, Sonnier R, Taguet A, Lopez-Cuesta J-M. Effect of cellulose, hemicellulose and lignin contents on pyrolysis and combustion of natural fibers. J. Anal. Appl. Pyrolysis. 2014;107:323-31.
[25] Zhou X, Li W, Mabon R, Broadbelt LJ. A critical review on hemicellulose pyrolysis. Energy Technology. 2017;5(1):52-79.
[26] Williams PT, Horne PA. The role of metal salts in the pyrolysis of biomass. Renew. Energy. 1994;4(1):1-13.
[27] Jakab E. Analytical techniques as a tool to understand the reaction mechanism. En: Recent advances in thermo-chemical conversion of biomass. EEUU: Elsevier; 2015. p. 75-108.
[28] Saddawi A, Jones J, Williams A, Wojtowicz M. Kinetics of the thermal decomposition of biomass. Energy & fuels. 2009;24(2):1274-82.
[29] Zhang J, Chen T, Wu J, Wu J. Multi-Gaussian-DAEM-reaction model for thermal decompositions of cellulose, hemicellulose and lignin: comparison of N 2 and CO 2 atmosphere. Bioresour. Technol. 2014;166:87-95.
[30] White JE, Catallo WJ, Legendre BL. Biomass pyrolysis kinetics: a comparative critical review with relevant agricultural residue case studies. J. Anal. Appl. Pyrolysis. 2011;91(1):1-33.