WASTEWATER TREATMENT FOR NITRATE AND HALOGENATED ACIDS
Tsvetomila Parvanova-Mancheva, Evgenia Vasileva, Venko Beschkov
Strony: 465-478
Opublikowano: 1 Jan 2012
Wyświetlenia: 237
Pobrania: 20
Streszczenie: Important hazardous pollutants of underground water are nitrate ions. Their content in natural water may be due to the use of nitrogen fertilizers as well as of the inadequate treatment of wastewater from households, industry and agriculture. The most appropriate and progressive method for practical denitrification is the biological, combined with the stimulating effect of constant electric field. They are characterized by speed and lack of secondary and waste products. Since all carboxylic acids are still in use, much scientific interest has focused on their biodegradation. The halogenated acids are classified as hazardous substances, contaminating surface and underground water. The strain Xanthobacter autotrophicus GJ 10 is known for its ability to degrade severe chemical pollutants and to use them as a sole carbon source. In the present study the degradation kinetics by entrapped in polyacrylamide gel immobilized cells was compared to those of the free culture. The gels were used in repeated-batch processes and in fed batch ones. High amounds of Monochloroacetic acid (MCA) and Dichloroacetic acid (DCA) were degradated.
Słowa kluczowe: wastewater, denitrification, nitrate ions, halogenated acids
Cytowanie artykułu: Tsvetomila Parvanova-Mancheva, Evgenia Vasileva, Venko Beschkov. WASTEWATER TREATMENT FOR NITRATE AND HALOGENATED ACIDS. Journal of International Scientific Publications: Materials, Methods & Technologies 6, 465-478 (2012). https://www.scientific-publications.net/en/article/1003230/
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