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Short Communication | Biochemistry | Argentina | Volume 12 Issue 5, May 2023

Oil-Biodegradation Potential of Bacterial Communities by using Algae Extract as Bio-Stimulant

Bucci Gianfranco | Acuna Adrian | Pucci Graciela ^[2]

Abstract: Bioremediation of hydrocarbon-contaminated soils by bacteria is a frequent process but requires nutrients when the soil is deficient in nitrogen and phosphate. The aim of the present study was to use algae extract as bio-stimulant of hydrocarbon-degrading bacteria. To this end, the algae extract was added to the contaminated soil at three concentrations (pure, 1:10 and 1:100), during the incubation period, at a rate of 15 % of moisture. The controls consisted of soil alone, moist soil, and soil added with Carbon, Nitrogen and Phosphate C:N:P at a proportion of 100:5:0.5. The number of bacteria and the amount of total hydrocarbons in the soil were also studied. The addition of the bio-stimulant to the polluted soil gradually increased the degradation of total petroleum hydrocarbons (TPH) during the experimental period. Thus, at the end of the experiment, the concentration of TPH in the soil had decreased from 2.24 % to 0.37%. Although the degradations obtained in the soil with C, N and P and algae extract at 1:10 and 1:100 were similar, the number of bacteria in the soil with the algae extract was high.

Keywords: seaweed extracts, hydrocarbons, bio-stimulant

Edition: Volume 12 Issue 5, May 2023,

Pages: 916 - 919