Nitrification Process in a Nuclear Wastewater with High Load of Nitrogen, Uranium and Organic Matter under ORP Controlled
| Autor: | Ariana Rossen, Patricia Silva Paulo, Mariano Venturini |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Geography
Planning and Development chemistry.chemical_element 02 engineering and technology 010501 environmental sciences Aquatic Science 01 natural sciences Biochemistry chemistry.chemical_compound Nitric acid Tributyl phosphate thermodynamic parameters TD201-500 Effluent 0105 earth and related environmental sciences Water Science and Technology nuclear effluent Water supply for domestic and industrial purposes biology bioprocess Hydraulic engineering Uranium 021001 nanoscience & nanotechnology Pulp and paper industry biology.organism_classification Nitrogen chemistry Wastewater Nitrifying bacteria Nitrification TC1-978 nitrifying bacteria 0210 nano-technology |
| Zdroj: | Water Volume 13 Issue 11 Water, Vol 13, Iss 1607, p 1607 (2021) |
| ISSN: | 2073-4441 |
| Popis: | To produce nuclear fuels, it is necessary to convert uranium′s ore into UO2-ceramic grade, using several quantities of kerosene, methanol, nitric acid, ammonia, and, in low level, tributyl phosphate (TBP). Thus, the effluent generated by nuclear industries is one of the most toxic since it contains high concentrations of dangerous compounds. This paper explores biological parameters on real nuclear wastewater by the Monod model in an ORP controlled predicting the specific ammonia oxidation. Thermodynamic parameters were established using the Nernst equation to monitor Oxiders/Reductors relationship to obtain a correlation of these parameters to controlling and monitoring that would allow technical operators to have better control of the nitrification process. The real nuclear effluent is formed by a mixture of two different lines of discharges, one composed of a high load of nitrogen, around 11,000 mg/L (N-NH4+-N-NO3−) and 600 mg/L Uranium, a second one, proceeds from uranium purification, containing TBP and COD that have to be removed. Bioprocesses were operated on real wastewater samples over 120 days under controlled ORP, as described by Nernst equations, which proved to be a robust tool to operate nitrification for larger periods with a very high load of nitrogen, uranium, and COD. |
| Databáze: | OpenAIRE |
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