Abstract
The present work is aimed at spectroscopic and luminescent investigations of the microbial cleavage efficiency of phenol in the water solution upon expose to UV light. With increasing time of irradiation of phenol in the saline solution,the absorption intensity increases throughout the spectrum. The efficiency of photoalteration of phenol in the saline solution is higher compared to that in water. The results obtained have shown that the efficiency of complex photobiological phenol destruction increases sharply compared to the photochemical or microbial destruction.
Highlights
Research on the impact of UV light on an aquatic system was initiated in reply to the discovery of the ozone hole over the Antarctic region
We examined phenol in the saline solution of the following composition (g/l): KNO3 (1):MgSO4 (0.2):NaCl (1):K2HPO4 (1)
The following specific features were established for the spectral characteristics of phenol in the saline solution compared to those in the water solution without irradiation: 1. The maximum of the fluorescent band of neutral species was shifted toward longer wavelengths from 296 to 304 nm (Table 1)
Summary
Research on the impact of UV light on an aquatic system was initiated in reply to the discovery of the ozone hole over the Antarctic region. The ozone depletion leads to increased penetration of UV-B radiation (280–320 nm) through the atmosphere [1]. In this connection, a study of the interaction between UV radiation and microorganisms becomes urgent. It is well known that phenol compounds enter pools with the sewage of woodworking enterprises, oil refining complexes, and coal mining and chemical industries. The phenol compounds differ by their toxic and organoleptic properties, chemical inertness, and sensitivity to microbiological cleavage. The phenol cleavage in the presence of enzymes includes a complex of physicochemical processes, among them the photolysis. The present work is aimed at spectroscopic and luminescent investigations of the microbial cleavage efficiency of phenol in the water solution upon expose to UV light
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