Biodegradation of phenol by aspergillus Niger

Abstract

Phenolic compounds are hazardous pollutants that are toxic to the natural ecosystem at very low concentration Biodegradation is the process by which organic substances are broken down into smaller compounds by the catalytic activity of living microbial organisms. The use of microbes as catalysts in the biodegradation of phenolic compounds has advanced significant in the recent decades. Biodegradation of phenol involves the complete mineralization of phenolic compounds to simple compounds like CO 2 ,H 2 O,NO 3 .we studied the biodegradation performance of phenol by using free cells of Aspergillus niger under different temperature, pH, concentration,and at different incubation periods under the aerobic conditions .