Biological treatment of phosphorites
- Higher Inst. of Chemical Technology, Sofia (Bulgaria)
- Univ. of Nevada, Reno, NV (United States)
The conventional chemical technologies for processing of phosphates are complicated, energy consuming and create serious environmental problems. A good future strategy should consider the biological processing approach, which could be economically feasible not only for high-grade phosphate raw materials but also for low-grade, high-impurity phosphates. In this study Aspergillus niger was used for bioleaching of bulgarian, moroccan, and tunisian phoshorites. It was found that very high rates of extraction, 96-98%. can be achieved. Various chemical and biochemical processes take place during the biotreatment, leading to destruction of the phosphate structures and extraction of phosphorus as water and citrate soluble compounds. These complex processes were studied by means of different physico-chemical methods and a model of their probable chemistry and mechanism was established. 11 refs., 4 figs., 1 tab.
- OSTI ID:
- 430588
- Report Number(s):
- CONF-960730-; TRN: 96:006487-0099
- Resource Relation:
- Conference: 5. world congress of chemical engineering, San Diego, CA (United States), 14-18 Jul 1996; Other Information: PBD: 1996; Related Information: Is Part Of The 5th World Congress of chemical engineering: Technologies critical to a changing world. Volume III: Emerging energy technologies clean technologies remediation and emission control fuels and petrochemicals; PB: 1118 p.
- Country of Publication:
- United States
- Language:
- English
Similar Records
Enhancing organic matter removal, product recovery, and hydrogen generation from fermentation wastewater
Bioleaching of rare earth elements from monazite sand: Bioleaching of Rare Earth Elements from Monazite