Saudi Journal of Biomedical Research (SJBR)
Volume-3 | Issue-04 | 144-150
Original Research Article
Bioremediation Potential of Zn (II) By Different Bacterial Species
T.A.A El-barbary, M.A El-Badry
Published : Aug. 30, 2018
Abstract
Heavy metals are generally toxic to microorganisms, especially if they
exist at high concentrations. Environmental pollution particularly in soil with
heavy metals can stem from industrial activities or sewage discharges. In this
study, Five different bacterial species Bacillus megaterium EMCC 1013, Rhizobium
rhizogenes EMCC1743, Rhizobium leguminosarum EMCC1130, Azotobacter vinelandii
and Nocardiopsis Dassenvillei were evaluated their potential activity in bioremediation
of Zn (II). Our results showed that five bacterial species have great variation potential
for zinc bioremediation. Bacillus megaterium EMCC has the highest capacity for
bioremediation of Zn (II) 650 ppm with 99 % removal after 24 h with inoculum size 0.1
x 10 29 cfu and incubation temperature 300C at PH 7 and energy source glucose and
ammonium oxalate as carbon and nitrogen source. The aim of our study was to
evaluation the bioremediation capacity of zinc as heavy metals by five different bacterial
species to use them in further study in removal of Zn (II) from plating waste water. In
addition Bacillus megaterium EMCC as the most potent Zn (II) resistant
microorganisms will very useful in biotechnology for the remediation of metal
contaminated environments with Zn (II) and can also be used in the construction of
biomarkers for the detection of zinc ions.