Autor: |
Saratovskikh, E., Kozlova, N., Papin, V., Shtamm, E. |
Předmět: |
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Zdroj: |
Applied Biochemistry & Microbiology; Jan2006, Vol. 42 Issue 1, p38-44, 7p, 3 Charts, 3 Graphs |
Abstrakt: |
Degradation of Lontrel by activated sludge (AS) from treatment plants and UV irradiation was studied. 3,6-Dichloropicolinic acid (3,6-DCPA, the main active principle of Lontrel) was not degraded by the microbial association of the AS. AS treated with nitrosourea under various conditions did not oxidize Lontrel either. Hard UV radiation degraded 3,6-DCPA within 4–24 h in the presence of constant sparging (bubbling) of air, oxygen, or ozone. The rate of oxidation in the presence of oxygen or ozone bubbling was three to four times higher than in the presence of air bubbling. It was found that the products of photochemical degradation of Lontrel were also toxic; however, they were readily degraded by AS microorganisms without additional AS treatment. [ABSTRACT FROM AUTHOR] |
Databáze: |
Complementary Index |
Externí odkaz: |
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