Cadmium Removal from Aqueous Solutions by Strain of Pantoea agglomerans UCP1320 Isolated from Laundry Effluent

Abstract

Background:Cadmium (Cd), which is a deadly heavy metal of work-related and environmental concern, has been recognized as a substance that is teratogenic and carcinogenic for humans. Therefore, the need to develop low-cost adsorbents to remove heavy metals from aqueous solution has greatly increased. Adsorbents such as Pantoea agglomerans biomass have been used.Aims:We investigated the biotechnological potential of Pantoea agglomerans for the biosorption of cadmium from aqueous solution.Patients and Methods: Pantoea agglomerans UCP1320 isolated from the effluent of a laundry industry was used to remove cadmium from aqueous solutions. Two approaches were compared using active or thermally inactivated biomass. Three different cadmium concentrations of 1, 10 and 100 ppm were used under constant stirring at temperatures of 25°C and 35°C as was pH of 3.0, 5.0 and 7.0. Variable incubation times of 1, 6, and 24h were also studied.Results:The results showed that the temperature did not influence the uptake of metal by living cells nor by inactive bacterial biomass. However, increasing the pH had a positive effect on removing intermediate concentrations of cadmium. Low concentrations of cadmium were completely removed by both live and inactive biomass.Conclusion: Pantoea agglomerans biomass was shown to have a promising performance for the biotechnological removal of cadmium which had been dissolved in aqueous solution.

Pantoea agglomerans, Klebsiella pneumoniae, and Shigella flexneri isolated from the Cisadane River as multiresistant bacteria to copper and dyes

“…This is in line with the results of the research of Paulina et al (2014), who reported that the P. agglomer ans strain LMAE2 isolated from sediments of the Tenglo channel, Puerto Montt, Chile was proven to have copper resistance. This phenomenon is supported by Acioly et al (2018), who reported that P. agglomerans are equipped with high resistance to copper and copperremoval abili ties. The ability of Klebsiella pneumoniae strain IrCis4 to accumulate copper in a medium containing 2 mM of CuSO 4 was 0.73 mg which increased to 1.34 mg in a medium containing 4 mM.…”

Heavy Metals and Microbial Diversity: A Comparative Analysis of Rivers Swat and Kabul

“…Similarly, other studies reported that E. agglomerans secretes specific enzymes that affect heavy metals' mobility and bioavailability in microorganisms [37]. In other studies, Kumar et al [38] and Acioly et al [39] reported that E. agglomerans is a good bioremediation agent and can effectively remove Cd from contaminated environments. Similarly, P. mirabilis is another isolate found in River Swat and River Kabul samples.…”

Isotherm and kinetic studies of cadmium biosorption and its adsorption behaviour in multi-metals solution using dead and immobilized archaeal cells

“…Similar maximum Cd(II) removal at pH (8.0) was reported for filamentous fungi 33 and for Ochrobactrum anthropi 34 . On the other hand, the optimal pH of 6 for Cd(II) adsorption was recorded for Pantoea agglomerans UCP1320 35 , Escherichia coli , Bacillus subtitis 36 , Pantoea sp. 37 , and Pseudomonas aeruginosa PU21 38 .…”

“…35. Cd(II) led to decrease in the removal of all tested metals by all tested biosorbents except for Ni in case of BB and IABB and Fe(II) in case of IABB.…”