Autor(es)

Rodrigues, Natalia Alvarez ; Buffo, Mariane Molina ; Casciatori, Fernanda Perpetua ; Farinas, Cristiane Sanchez

• Tipo de documento: Artigo Científico
• Fonte: Bioresource Technology; v. 408, p. 12-pg., 2024-07-30.

Resumo

This study explores the enhancement of phosphate rock (PR) solubilization through solid-state fermentation (SSF) by optimizing oxalic acid production using Aspergillus niger. Key process parameters, including the use of agro-industrial by-products (sugarcane bagasse (SCB), wheat bran (WB), soybean bran (SB)), pH levels, sucrose supplementation, and methanol addition, were systematically evaluated through sequential experimental designs. The results identified SCB and SB in a 1:1 ratio as the most effective substrate. Remarkably, the inclusion of methanol (7%) and sucrose (0.5 %) resulted in a 3-fold increase in oxalic acid production. Under these optimized conditions, significant phosphorus solubilization of Bayo<acute accent>var, Itafo<acute accent>s, and Registro PRs was achieved, with Bayo<acute accent>var rock releasing up to 12.1 g/kgds of soluble P (63.8 % efficiency). Additionally, the SSF process effectively released organic phosphorus from the agro-industrial substrates. These findings hold promise for advancing the bio-based economy and developing future industrial biofertilizers. (AU)

• 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
• Modalidade de apoio: Auxílio à Pesquisa - Programa BIOEN - Temático
• Processo FAPESP: 19/25261-8 - Produção de nanocelulose a partir de macroalgas marinhas do litoral alagoano via rota enzimática: obtenção, caracterização e viabilidade econômica
• Beneficiário: Cristiane Sanchez Farinas
• Modalidade de apoio: Auxílio à Pesquisa - Regular