Steam explosion pretreatment improves acetic acid organosolv delignification of oil palm mesocarp fibers and sugarcane bagasse.
Autor: | Pereira Marques F; Departament of Organic and Inorganic Chemistry, Federal University of Ceará, CEP: 60440-900 Fortaleza, CE, Brazil. Electronic address: fpmarques@alu.ufc.br., Lima Soares AK; Escola de Química, Federal University of Rio de Janeiro, Rio de Janeiro, RJ, Brazil. Electronic address: amandakellylima@eq.ufrj.br., Lomonaco D; Departament of Organic and Inorganic Chemistry, Federal University of Ceará, 60440-900 Fortaleza, CE, Brazil. Electronic address: lomonaco@ufc.br., Alexandre E Silva LM; Embrapa Agroindústria Tropical, Rua Dra. Sara Mesquita, 2270, CEP: 60511-110 Fortaleza, CE, Brazil. Electronic address: lorena.mara@embrapa.br., Tédde Santaella S; Institute of Marine Science, Federal University of Ceará, Avenida da Abolição, 3207, CEP: 60165-081 Fortaleza, CE, Brazil. Electronic address: sandra@ufc.br., de Freitas Rosa M; Embrapa Agroindústria Tropical, Rua Dra. Sara Mesquita, 2270, CEP: 60511-110 Fortaleza, CE, Brazil. Electronic address: morsyleide.rosa@embrapa.br., Carrhá Leitão R; Embrapa Agroindústria Tropical, Rua Dra. Sara Mesquita, 2270, CEP: 60511-110 Fortaleza, CE, Brazil. Electronic address: renato.leitao@embrapa.br. |
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Jazyk: | angličtina |
Zdroj: | International journal of biological macromolecules [Int J Biol Macromol] 2021 Apr 01; Vol. 175, pp. 304-312. Date of Electronic Publication: 2021 Jan 28. |
DOI: | 10.1016/j.ijbiomac.2021.01.174 |
Abstrakt: | Steam explosion can be used to pretreat lignocellulosic materials to decrease energy and chemical consumption during pulping to obtain environmentally friendly lignin and to improve lignin yield without changing its structure. The objective of this study was to evaluate the extraction of lignin from oil palm mesocarp fibers and sugarcane bagasse using steam explosion pretreatment followed by acetosolv. The biomasses were pretreated at 168 °C for a reaction time of 10 min. Steam explosion combined with acetosolv at lower severities was also carried out. Steam explosion followed by acetosolv increased the lignin yield by approximately 15% and 17% in oil palm mesocarp fibers and sugarcane bagasse, respectively. In addition, steam explosion decreased the reaction time of acetosolv four-fold while maintaining the lignin yield from sugarcane bagasse. Similar results were not obtained for oil palm mesocarp. High-purity and high-quality lignins were obtained using steam explosion pretreatment with structural characteristics similar to raw ones. Sugarcane bagasse lignin seems to be a better option for application in material science due its higher lignin yield and higher thermal stability. Our findings demonstrate that steam explosion is efficient for improving lignin yield and/or decreasing pulping severity. Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper. (Copyright © 2021 Elsevier B.V. All rights reserved.) |
Databáze: | MEDLINE |
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