Efficiency of purification of water from cyclic aromatic xenobiotics with strains P. fluorescens ONU328 and P. maltophilia ONU329
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2018
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Одеський національний університет імені І. І. Мечникова
Анотація
Abstract. It has been experimentally established that non-pathogenic strains of bacteria of the genus Pseudomonas, identified by the fatty acid composition of their cellular lipids as P. fluorescens ONU328, P. maltophilia ONU329 (isolated from the marine environment), have oxidizing ability for cyclic aromatic xenobiotics (phenol, N-cetylpyridinium bromide). The high phenol-oxidizing ability of the investigated strains of microorganisms is proved. When water of bacterial cells in the amount of 7.5 x 105 CFU/ ml is introduced into phenol contaminated (at a concentration of 300 mg / l), the degree of water purification from phenol is 100% on day 18 when using as a biodestructor strain P. maltophilia ONU329 and 22 days - when using strain P. fluorescens ONU328. It has been experimentally confirmed that when the free cells of bacteria of P. fluorescens ONU328 or P. maltophilia ONU329 strains in the amount of 5.5x104 CFU/ ml are introduced once into the contaminated water, the purification rate of water from N-cetylpyridinium bromide at a concentration of 20 mg / l reaches 50.7% for the 4th day and 55.7% for the 6th day, respectively. With the repeated introduction of fresh portions of microorganism-destructors or use of higher starting doses (5.5x10 CFU/ ml), the water purification rate from N-CPB is 98.0-98.5%.
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purification of water, phenol, N-cetylpyridinium bromide, bacteria of the genus Pseudomonas
Бібліографічний опис
Modern problems of Microbiology and Biotechnology: materials of M78 young scientists international conference (Odesa, 20-23 june 2018). – Odesa : «Odesa I. I. Mecnikov National University», 2018.