Gulderen Uysal Akkus
Afyon Kocatepe University
Title: Determination of the heavy metal resistance of bacteria isolated from ceramic industry sludge and wastes
Biography
Biography: Gulderen Uysal Akkus
Abstract
Lead (Pb), one of the more persistent metals, was estimated to have a soil retention time of 150 to 5000 years. Pb is a common environmental contaminant found in soils. Unlike other metals, Pb has no biological role, and is potentially toxic to microorganisms. Heavy metals can be poisoned by adsorption, complexation, or chemical reduction of metal ions by microorganisms, or they develop various mechanisms to use them as terminal electron acceptors in anaerobic respiration. In this study Bulk plaque method was used for isolation of bacteria from the sample in solid medium. NA and PCA medium. and were allowed to incubate at 37 ° C for 48 hours for mesophilic microorganisms. 11 different bacteria isolated from Ceramics Muds (CM) and Ceramics Wastes (CW) inoculated agar plates containing 0.5 mM of lead [Pb(NO3)2], copper [CuSO4.5H2O] and silver [AgNO3]. Different concentrations (10mg/l, 5mg/l, 2.5 mg/l, 2mg/l, 1.5mg/l, 1mg/l, 0.5 mg/l and 0.0125mg/l) of lead resistance was investigated.. 5 isolates were found to be silver, 10 isolates were found to be resistant and 8 isolates were found to be resistant to the infection. 4 isolate showed resistance against 3 metals