Strains of Acinetobacter species (bicoccum), Arthrobacter species, and Rhodococcus species, and a method for biological purification from oil spills and pollutions, using said strains

A purified strain of Acinetobacter species (bicoccus) deposited on Jan. 19, 1993 in the All-Union Collection of Industrial Microorganisms at the All-Union Research Institute for Genetics and Selection of Microorganisms

• said strain having the following cultural-morphological characteristics:
• cells on meta-infusion agar are immobile, appearing as short thick rods measuring 1.2-1.8, 1.5-3.4 m in a young culture, and having a coccal shape measuring 1.5 m in a three-day culture;
• the culture forms no spores;
• three-day colonies grown on meta-infusion agar are rounded in shape, with even edges, whitish in color, glossy, of the sour-cream consistency;
• said strain having the following physiological-biochemical characteristics:
• obligate aerobe, chemoorganotroph, catalase-positive, gram-negative, oxidase-negative, no demand for vitamins and additional growth factors;
• grows in a broad range of the culture medium pH values (3.8-8.5) and temperatures (10.degree.-35.degree. C.), utilizes mineral nitrogen and fixes atmospheric nitrogen;
• said strain being non-pathogenic, non-toxic and having no hemolytic activity.

A method for microbiological treatment of various media and surfaces from petroleum pollution, said method comprising

• inoculating into the petroleum pollution at least one bacterial culture isolated from the biocenosis of active silt, containing the petroleum pollution, said culture incorporating the purified strain of Acinetobacter species (bioccum) B-6445, which was deposited on Jul. 6, 1993 in the All-Russian Collection of Industrial Microorganisms of the All-Russian Research Institute for Genetics and Selection of Microorganisms and representing an integrated trophic association, featuring a weight ratio between the biomass of said bacterial culture and the petroleum pollution being treated, equal to 1:10-10.sup.5, respectively;
• said strain being non-pathogenic, non-toxic, and having no hemolytic activity;
• said strain being gram-negative;
• said strain having the following cultural-morphological characteristics:
• cells on meta-infusion agar are immobile, appearing as short thick rods measuring 1.2-1.8, 1.5-3.4 m in a young culture, and having a coccal shape measuring 1.5 m in a three-day culture;
• the culture forms no spores;
• three-day colonies grown on meta-infusion agar are rounded in shape, with even edges, whitish in color, glossy, of the sour-cream consistency;
• said strain having the following physiological-biochemical characteristics:
• obligate aerobe, chemoorganotroph, catalase-positive, gram-negative, oxidase-negative, no demand for vitamins and additional growth factors;
• grows in a broad range of the culture medium pH values (3.8-8.5) and temperatures (10.degree.-35.degree. C.), utilizes mineral nitrogen and fixes atmospheric nitrogen;
• and
• cultivating the Acinetobachter strain on said petroleum pollution, containing petroleum hydrocarbons, mineral salts of nitrogen and phosphorus, iron, manganese, potassium, magnesium, and sulfur, until destruction of the petroleum hydrocarbons being treated occurs, thus providing for cleaning from petroleum pollution.