Metal-accumulating and destructive activity of immobilized bacteria in seawater biotechnology

Abstract

A comparative analysis of the metal-accumulating and destructive activity of marine bacteria in biotechnology for the purification of sea water with multicomponent contamination has been carried out. Increase of metal-accumulating and surfactant- and oil-destructive activity of the association of bacteria Pseudomonas fluorescens ONUU328, P. maltophilia ONU329, P. cepacia ONU327, No. 38, No. 39, No. 41, No. 47 has been promoted by immobilization on synthetic carriers such as "VIIA". The experimental test has confirmed that the use of biochemically active immobilized bacteria gives maximum results in purification of sea water from both inorganic and organic pollutants. The degree of purification from organic compounds reached a maximum when water was treated with immobilized bacteria in the composition of biofloсuls on the surface of an artificial carrier – 74.0% for sodium dodecylsulfate and 83.0% for petroleum hydrocarbons; from inorganic compounds – when treating water with bacterial cells immobilized on an artificial carrier without flocculation, 64.4% for Cr (VI) and 71.6% for Cu (II). These results allow recommending the use of immobilized bacteria with polyfunctional activity in a new technology for treating sea water with multicomponent pollution.