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(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

Acid-functionalized magnetic nanocatalysts mediated pretreatment of sugarcane straw: an eco-friendly and cost-effective approach

Texto completo
Autor(es):
Ingle, Avinash P. [1] ; Philippini, Rafael Rodrigues [1] ; de Souza Melo, Yasmin Cristhine [1] ; da Silva, Silvio Silverio [1]
Número total de Autores: 4
Afiliação do(s) autor(es):
[1] Univ Sao Paulo, Engn Sch Lorena, Dept Biotechnol, Lorena, SP - Brazil
Número total de Afiliações: 1
Tipo de documento: Artigo Científico
Fonte: Cellulose; v. 27, n. 12 JUN 2020.
Citações Web of Science: 1
Resumo

The ubiquitous nature of lignocellulosic biomass on planet earth and its economic viability attracted a great deal of attention from researchers and becomes foremost feedstock for biofuel production particularly bioethanol. However, due to complexity in structure, its pretreatment is essentially required prior to actual use. In the present study, a promising approach has been proposed through the development of acid-functionalized magnetic nanocatalysts. Two different acid-functionalized magnetic nanocatalysts i.e. alkylsulfonic acid functionalized magnetic nanoparticles (Fe3O4-MNPs-Si-AS) and butylcarboxylic acid functionalized magnetic nanoparticles (Fe3O4-MNPs-Si-BCOOH) were developed and their efficacy was studied in the pretreatment of sugarcane straw at varying concentrations (100, 200, 300, 400, 500 mg/g of straw). The enhanced concentration dependent production of sugar (xylose) was reported in case of both the nanocatalysts. The maximum 17.06 g/L for Fe3O4-MNPs-Si-AS and 15.40 g/L for Fe3O4-MNPs-Si-BCOOH sugar was reported at 500 mg which is comparatively higher than normal acid (H2SO4) (14.63 g/L) and non-treated (0.24 g/L) sugarcane straw. Further, both the nanocatalysts were recovered by applying an external magnetic field and reused for the next two subsequent cycles of pretreatment. It was observed that with every reuse of nanocatalysts the concentration of sugar production was reduced. Moreover, generation of very less amount of toxic inhibitors was reported in the hemicellulosic hydrolyzate obtained in the present study. Considering these facts, it is believed that such nanocatalysts can be used as an effective, eco-friendly and economically viable alternative to the conventional pretreatment agents like mineral acids. (AU)

Processo FAPESP: 16/22086-2 - Desenvolvimento de novos métodos nanotecnológicos aplicados ao pré-tratamento de biomassa lignocelulósica
Beneficiário:Avinash Prabhakarrao Ingle
Linha de fomento: Bolsas no Brasil - Pós-Doutorado
Processo FAPESP: 16/10636-8 - Da fábrica celular à biorrefinaria integrada Biodiesel-Bioetanol: uma abordagem sistêmica aplicada a problemas complexos em micro e macroescalas
Beneficiário:Roberto de Campos Giordano
Linha de fomento: Auxílio à Pesquisa - Programa BIOEN - Temático
Processo FAPESP: 19/19695-5 - Desenvolvimento e síntese de nanobiocatalisadores para a aplicação em pré-tratamento de biomassa lignocelulósica visando a obtenção de açúcares fermentescíveis para o uso como fonte de carbono em biorrefinarias
Beneficiário:Yasmin Cristhine de Souza Melo
Linha de fomento: Bolsas no Brasil - Iniciação Científica