University of Tehran Press Progress in Biological Sciences 1016-1058 3 2 2013 12 01 Optimal conditions for enhancing sodium dodecyl sulfate biodegradation by Pseudomonas aeruginosa KGS 107 115 35840 10.22059/pbs.2013.35840 EN Razieh Shahbazi Department of Biology, Faculty of Basic Sciences, Alzahra University, Tehran, Iran Roha Kasra-Kermanshahi Department of Biology, Faculty of Basic Sciences, Alzahra University, Tehran, Iran Sara Gharavi Department of Biology, Faculty of Basic Sciences, Alzahra University, Tehran, Iran Zahra Moosavi- Nejad Department of Biology, Faculty of Basic Sciences, Alzahra University, Tehran, Iran Faezeh Borzooee Department of Biology, Faculty of Basic Sciences, Alzahra University, Tehran, Iran Journal Article 2013 04 15 The anionic surfactant sodium dodecyl sulfate (SDS) was degraded by novel strain of Pseudomonas aeruginosa KGS under accession No. JQ328193, which was isolated from car wash wastewater. The purpose of this research was to study different optimization conditions required for enhancing the biodegradation of sodium dodecyl sulfate P. aeruginosa KGS. Influence of different Physicochemical factors such as nitrogen and carbon sources, pH, temperature, inoculation percent and different concentrations of SDS on the biodegradation of SDS were investigated by measuring the degradation rate of SDS using methylene blue active substance (MBAS) method. The optimum conditions determined for the this selected bacterium strain for degradation of SDS were 1.5mM SDS, inoculation percent 7%, pH 7.5, temperature 37°C, ammonium nitrate (nitrogen source) when basal salt medium was supplemented with glucose as a co substrate. This bacterium is able to degrade about 98% of the SDS after 24h of incubation under optimized conditions of biodegradation. The results presented in this research indicate that Pseudomonas aeruginosa is a suitable candidate for SDS biodegradation.

https://pbiosci.ut.ac.ir/article_35840_4b71f83d2d3803b8d4cd2e6c53698990.pdf