Biosorption of Cadmium and Manganese Using Free Cells of Klebsiella sp. Isolated from Waste Water

Hou, Yunnan; Cheng, Keke; Li, Zehua; Ma, Xiaohui; Wei, Yahong; Zhang, Lei; Wang, Yao

doi:10.1371/journal.pone.0140962

Cited by 49 publications

(18 citation statements)

References 46 publications

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“…After adsorption of heavy metals, there are many flocs on the surface of the strain, and this may produce alkaline substances through the redox reaction. These changes suggest that the metal ions were entrapped in the extracellular polymeric substances of HM-5, thus causing deformation and damage to the cell surface during Mn absorption [49].…”

Section: Surface Morphology By Scanning Electron Microscopymentioning

confidence: 99%

Biosorption Characteristics of Mn (II) by Bacillus cereus Strain HM-5 Isolated from Soil Contaminated by Manganese Ore

Xu¹,

Ding²,

Hui-min³

et al. 2018

Pol. J. Environ. Stud.

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Section: Surface Morphology By Scanning Electron Microscopymentioning

confidence: 99%

Biosorption Characteristics of Mn (II) by Bacillus cereus Strain HM-5 Isolated from Soil Contaminated by Manganese Ore

Xu¹,

Ding²,

Hui-min³

et al. 2018

Pol. J. Environ. Stud.

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“…Similar results of cadmium biosorption were obtained by Hou et al . [ 34 ] who reported cadmium biosorption by Klebsiella sp. at pH 5.0 and a temperature of 30°C.…”

Section: Discussionmentioning

confidence: 99%

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

et al. 2018

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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.

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“…cereus S5 strain has a higher absorption rate in water, and relative to the tolerant bacteria of Klebsiella sp. from other via screening to cadmium [ 50 ], it grows more rapidly. When the B .…”

Section: Discussionmentioning

confidence: 99%

Cd-Resistant Strains of B. cereus S5 with Endurance Capacity and Their Capacities for Cadmium Removal from Cadmium-Polluted Water

et al. 2016

PLoS ONE

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The goal of this study was to identify Cd-resistant bacterial strains with endurance capacity and to evaluate their ability to remove cadmium ions from cadmium-polluted water. The Bacillus cereusS5 strain identified in this study had the closest genetic relationship with B. cereus sp. Cp1 and performed well in the removal of Cd2+ions from solution. The results showed that both the live and dead biomasses of the Cd2+-tolerant B. cereus S5 strain could absorb Cd2+ ions in solution but that the live biomass of the B. cereus S5 strain outperformed the dead biomass at lower Cd2+concentrations. An analysis of the cadmium tolerance genes of B. cereus S5 identified ATPase genes that were associated with cadmium tolerance and involved in the ATP pumping mechanism. The FTIR spectra revealed the presence of amino, carboxyl and hydroxyl groups on the pristine biomass and indicated that the cadmium ion removal ability was related to the structure of the strain. The maximum absorption capacity of the B. cereus S5 strain in viable spore biomass was 70.16 mg/g (dry weight) based on a pseudo-second-order kinetic model fit to the experimental data. The Langmuir and Langmuir-Freundlich isotherm adsorption models fit the cadmium ion adsorption data well, and the kinetic curves indicated that the adsorption rate was second-order. For Cd2+ concentrations (mg/L) of 1–109 mg/L, good removal efficiency (>80%) was achieved using approximately 3.48–10.3 g/L of active spore biomass of the B. cereus S5 strain. A cadmium-tolerant bacteria-activated carbon-immobilized column could be used for a longer duration and exhibited greater treatment efficacy than the control column in the treatment of cadmium-polluted water. In addition, a toxicity assessment using mice demonstrated that the biomass of the B. cereus S5 strain and its fermentation products were non-toxic. Thus, the isolated B. cereus S5 strain can be considered an alternative biological adsorbent for use in emergency responses to severe cadmium pollution and in the routine treatment of trace cadmium pollution.

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Biosorption of Cadmium and Manganese Using Free Cells of Klebsiella sp. Isolated from Waste Water

Cited by 49 publications

References 46 publications

Biosorption Characteristics of Mn (II) by Bacillus cereus Strain HM-5 Isolated from Soil Contaminated by Manganese Ore

Biosorption Characteristics of Mn (II) by Bacillus cereus Strain HM-5 Isolated from Soil Contaminated by Manganese Ore

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

Cd-Resistant Strains of B. cereus S5 with Endurance Capacity and Their Capacities for Cadmium Removal from Cadmium-Polluted Water

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