Phenol remove using some microorganisms

الملخص EN

This research work addressed laboratory study for biological treatment of phenol.

Figuring phenol disintegration will give an idea of biodegradation of most organic chemicals since it is included in the composition of most of them.

Biological treatment is considered one of the effective and economic ways to address phenol treatment by biodegradation as compared with high cost methods of physical and chemical processing.

The method is of low efficiency when applied to high concentrations, in addition to formation of secondary compounds that may be more dangerous than the target material.

The study focused on use of three isolates, i.e.

Pseudomonas, Chlorella and Acentobacter.

They were taken from the Microbiology Studies Laboratory at Allepo University, and characterized by its resistance to phenol at concentrations that reached up to 600 mg/L.

It was found that algae Chlorella genus is the best sample in the disintegration of phenol and the most resistant.

It has been able to disintegrate more than 90% of the concentration of phenol in its media within two weeks.

The study showed that a vaccine of 4% of the size of the media was enough to resist inhibiting effect to phenol.

Best results were achieved the in biodegradation rates of phenol at the temperature range of 30 to 35°C, moderate pH (7 = pH) and ventilation at rotation speed of 125 rev/min, coupled with the best rate of growth after 48 hours of incubation.

The research recommended to use microorganisms, that are characterized by resistance to phenol and its compounds and most capable of its disintegration of using it as the sole source of carbon and energy such as species of Pseudomonas, Acentobacter and Chlorella