Possibility of Using Phenol- and 2,4-Dichlorophenol-Degrading Strain, Rhodococcus erythropolis 17S, for Treatment of Industrial Wastewater

Resumo

A new phenol- and 2,4-dichlorophenol (2,4-DCP)-degrading strain Rhodococcus erythropolis 17S isolated from the soil contaminated with phenol and its derivatives for a long time was characterized. The strain was identified based on phenotypic, physiological, and biochemical features as well as on the results of 16S rRNA gene sequencing. The growth of R. erythropolis 17S in batch culture using phenol and 2,4-DCP as sources of carbon and energy has been studied. The concentration of phenol and 2,4-DCP in culture medium decreased by 55% (on the fourth day) and 47% (on the 22nd day) in comparison to the control, respectively. It is concluded that R. erythropolis 17S can be used for phenol removal from industrial wastewaters of petrochemical and tanning extract production plants.