| Full text | |
| Author(s): |
Rodrigues, Natalia Alvarez
;
Buffo, Mariane Molina
;
Casciatori, Fernanda Perpetua
;
Farinas, Cristiane Sanchez
Total Authors: 4
|
| Document type: | Journal article |
| Source: | Bioresource Technology; v. 408, p. 12-pg., 2024-07-30. |
| Abstract | |
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) | |
| FAPESP's process: | 16/10636-8 - From the cell factory to the Biodiesel-Bioethanol integrated biorefinery: a systems approach applied to complex problems in micro and macroscales |
| Grantee: | Roberto de Campos Giordano |
| Support Opportunities: | Program for Research on Bioenergy (BIOEN) - Thematic Grants |
| FAPESP's process: | 19/25261-8 - Nanocellulose production from marine macroalgae of Alagoas coast through the enzymatic route: obtention, characterization and economic feasibility |
| Grantee: | Cristiane Sanchez Farinas |
| Support Opportunities: | Regular Research Grants |