The Utilization of Phosphogypsum as a Sustainable Phosphate-Based Fertilizer by Aspergillus niger

Phosphogypsum (PG) is a by-product of the phosphorus (P) chemical industry, and usually contains ~2% residual phosphate. The P in PG would cause pollution environment by way long-term stacking. Phosphate-solubilizing fungi (PSF) can effectively promote release from insoluble aim this study was to investigate capacity between tricalcium phosphate (TCP) Aspergillus niger (ANG) via flask experiment. At same time, application fertilizer (PGF) soil also performed. dry biomass ANG TCP treatment reached maximum value 0.71 0.38 g, respectively, after five days incubation. concentrations released seven days, i.e., 128 1103 mg/L, respectively. has similar ratio compared with ANG, 52% vs. 55%. In incubation experiment, PGF significantly increase available content continuously maintain high concentration (17.2 mg/kg) four weeks utilization feasible pathway content, especially for sustainable use resources.