Upcycling corn cropping waste by nanocellulose production

Autor(es)

dos Santos, David Fernando ; Ferreira, Rafaela R. ; Souza, Alana Gabrieli ; Lenhani, Gabriela Caroline ; Deon, Vinicius Gonsalves ; Rosa, Derval S. ; Pinto, Vania Zanella

• Tipo de documento: Artigo Científico
• Fonte: BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY; v. 67, p. 12-pg., 2025-07-01.

Resumo

Waste revaluation is a topic of interest in science and has been widely explored to produce nanocellulose, showing the unlimited application potential and production growth. This work evaluates the nanocellulose production from high cellulose content corn crop waste (stalk, cob, and husk). To produce nanocellulose, chemical isolation, and bleaching were used for corn wastes, followed by a mechanical ball milling fibrillation at three different periods (6h, 9h, and 12h). Nanocellulose was evaluated using dynamic light scattering, zeta potential, infrared (FTIR) and Raman spectrometry, X-ray diffraction (XRD), and transmission electron microscopy (TEM). Ball milling fibrillation time increases the crystallinity index (CI) in all corn waste cellulose samples. Also, nanometric-scale sizes (107-335 nm of hydrodynamic radius) and a certain dissolution stability were achieved due to their chemical constitution. The morphology shows nanofibrils for each sample, with diameters ranging from 2.03 to 16.73 nm after 12h of ball milling. This study shows an efficient green method to obtain nanocellulose from corn crop wastes with potential for applications in several fields. (AU)

• Processo FAPESP: 24/08105-0 - Poli(alfa e beta-ciclodextrinas) contendo argilas brasileiras para remoção de elementos potencialmente tóxicos em águas contaminadas
• Beneficiário: Rafaela Reis Ferreira
• Modalidade de apoio: Bolsas no Exterior - Estágio de Pesquisa - Doutorado
• Processo FAPESP: 22/01382-3 - Hidrogéis de celulose contendo argilas modificadas para remoção e recuperação de íons metálicos presentes em águas contaminadas
• Beneficiário: Rafaela Reis Ferreira
• Modalidade de apoio: Bolsas no Brasil - Doutorado
• Processo FAPESP: 20/13703-3 - Materiais porosos ecológicos para a recuperação e reavaliação de metais recuperados de água contaminada
• Beneficiário: Derval dos Santos Rosa
• Modalidade de apoio: Auxílio à Pesquisa - Temático
• Processo FAPESP: 21/14714-1 - EMU concedido no processo 2020/13703-3 (projeto temático): Cromatógrafo de Íons Modular 940 Professional IC Vario
• Beneficiário: Derval dos Santos Rosa
• Modalidade de apoio: Auxílio à Pesquisa - Programa Equipamentos Multiusuários