Abstract
A frequent problem in the oil industry is the formation of scale. To minimize this, it is necessary to use additives, which usually enrich the environment, thus promoting microbial growth and inactivation of products. This work evaluated the growth of Pseudomonas aeruginosa and Shewanella algae strains on three scale inhibitors: phosphonate, ethylene glycol combined to amino-ethanol and an organic acid copolymer. Samples containing phosphonate and organic acid copolymer stimulated the growth of P. aeruginosa strains, while ethylene glycol acted as a biocide for S. algae. Furthermore, the samples were used as a source of nutrients by the tested strains.
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