Biosorption of Heavy Metals (Cd2+, Cu2+, Co2+, and Mn2+) by Thermophilic Bacteria,Geobacillus thermantarcticusandAnoxybacillus amylolyticus: Equilibrium and Kinetic Studies

Özdemir, Sadin; Kılınç, Ersin; Poli, Annarita; Nicolaus, Barbara

doi:10.1080/10889868.2012.751961

Cited by 62 publications

(22 citation statements)

References 31 publications

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“…The use of thermophilic bacteria in heavy metal remediation of polluted sites, or for metal removal from industrial waste, has been recently explored by different authors [17,18,19,20,35]. The use of thermophilic bacteria as passive heavy metal accumulators depends on their heavy metal resistance, the degree of contamination and the physical and chemical characteristics of the matrix to be remediated or de-polluted.…”

Section: Discussionmentioning

confidence: 99%

“…This could be a newly-found detoxification mechanism of thermophilic bacteria, as the previously described ones were passive mechanisms of heavy metals absorption on the bacterial cell surface [17,18,19,20], or through a specific soluble, cytoplasmic metal-binding protein able to increase the cellular efflux of heavy metals [22]. …”

Section: Discussionmentioning

confidence: 99%

“…Özdemir et al [17] studied the passive mechanism of absorption of Cd 2+ , Cu 2+ , Co 2+ , and Mn 2+ on the cell surface of thermophilic bacteria Geobacillus thermantarcticus and Anoxybacillus amylolyticus . The works of Hetzer et al [18], Burnett et al [19], and Chatterjee et al [20] dealt with the absorption of Cd and other heavy metals on the cell surface of different thermophilic bacteria.…”

Section: Introductionmentioning

confidence: 99%

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Pb2+ Effects on Growth, Lipids, and Protein and DNA Profiles of the Thermophilic Bacterium Thermus Thermophilus

et al. 2016

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Extremophiles are organisms able to thrive in extreme environmental conditions and some of them show the ability to survive high doses of heavy metals thanks to defensive mechanisms provided by primary and secondary metabolic products, i.e., extremolytes, lipids, and extremozymes. This is why there is a growing scientific and industrial interest in the use of thermophilic bacteria in a host of tasks, from the environmental detoxification of heavy metal to industrial activities, such as bio-machining and bio-metallurgy. In this work Thermus thermophilus was challenged against increasing Pb2+ concentrations spanning from 0 to 300 ppm in order to ascertain the sensitiveness of this bacteria to the Pb environmental pollution and to give an insight on its heavy metal resistance mechanisms. Analysis of growth parameters, enzyme activities, protein profiles, and lipid membrane modifications were carried out. In addition, genotyping analysis of bacteria grown in the presence of Pb2+, using random amplified polymorphic DNA-PCR and DNA melting evaluation, were also performed. A better knowledge of the response of thermophilic bacteria to the different pollutants, as heavy metals, is necessary for optimizing their use in remediation or decontamination processes.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Pb2+ Effects on Growth, Lipids, and Protein and DNA Profiles of the Thermophilic Bacterium Thermus Thermophilus

et al. 2016

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“…4) was found to be a fit better than the Langmuir (R 2 = 0.8963) and Temkin (R 2 = 0.9462) isotherm models. Various studies have reported the Freundlich [36,37] or Langmuir [38,39] or Temkin [40] isotherm models as the better fit in order to explain the biosorption behavior of different microorganisms.…”

Section: Isotherm Modelingmentioning

confidence: 99%

Biosorption of Iron (II) by Lactobacillus fermentum from Aqueous Solutions

Kanamarlapudi¹,

Muddada²

2020

Pol. J. Environ. Stud.

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“…The amount of biosorbents is also a critical parameter that affects the biosorption performance. Various concentrations of biosorbents can vary the quantity of the biosorbed metal ions on biosorbents as well as the recovery capacity 23 . The impact of the biosorbent concentration was examined in the variety of 100-300 mg.…”

Section: Effects Of Amounts Of Biosorbent and Resinmentioning

confidence: 99%

A Novel Biosorbent for Preconcentrations of Co(II) and Hg(II) in Real Samples

Özdemir

Kılınç

Şen

2020

Sci Rep

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A new biosorbent, composed of Amberlite XAD-4 loaded with Anoxybacillus kestanboliensis, was developed and surface morphologies were investigated by SeM and ft-iR. it was used for solid phase column preconcentrations of co(ii) and Hg(ii) before their measurements by icp-oeS. LoDs were calculated as 0.04 and 0.06 ng mL −1 for co(ii) and Hg(ii) respectively. the maximum biosorption capacities were determined as 24.3 and 27.8 mg g −1 for co(ii) and Hg(ii) respectively. preconcentration factors were achieved for Co(II) and Hg(II) as 80. The method validation was performed by analyzing certified reference materials. The new process was successfully utilized for the preconcentration of these metals in various food samples. it should be highlighted that the sensitivity of icp-oeS was critically improved by applying developed method. Hence, ICP-OES could be an effective alternative for icp-MS and/or Gf-AAS.Some metal ions are known to be highly toxic. Therefore, a number of recent studies have focused on metal ion toxicity and carcinogenicity on human beings and other living organisms even at very low levels 1,2 . Among the various types of pollutants, toxic metal ions cannot be easily eliminated from nature 3 . Accumulation of toxic and deleterious metal ions in soft tissues of animals and humans even at low concentrations could be a major concern as they are not metabolized and can create significant damage to the body tissues 4 . Co and Hg are two typical metal ions in environmental samples which are also detected in plants and food samples. Toxicological influences such as vasodilation and cardiomyopathy are reported for Co exposure. Hg is also familiar as it is the most neurotoxic metal ion and can harm most of the human systems 3 .The usage of the biological processes is an idea for the operation of environmental metal pollution. Biological processes for the bioremediation depend on the physical nature of binding sites and chemical conditions 4 . The utilization of biomass, including alive and dead microorganisms in the possibly retention and removal of metal ions from environmental samples, has acquired significant reliability over the past few years due to its efficiency, ecofriendliness and economic choice. The major properties of biosorbents are (a) having a variety of metal binding sites, (b) having small and identical sizes, (c) being less subject to interference from alkali-earth and alkali metals than ion-exchange resins (d) being generally cheaper than functionalized polymers (e) having the possibility to be obtained via green technologies 5 .Concentrations of toxic metal ions are known as trace levels that are lower than the quantification limit of the instruments 6 . The determination, separation and analysis of low concentration of toxic metal ions in natural samples such as soil, food and water have become significant 7 . Therefore, it is necessary to develop analytical methods to preconcentrate and determine trace metal ions 6 .Alternative methods are recommended for the preconcentration and separatio...

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Biosorption of Heavy Metals (Cd²⁺, Cu²⁺, Co²⁺, and Mn²⁺) by Thermophilic Bacteria,Geobacillus thermantarcticusandAnoxybacillus amylolyticus: Equilibrium and Kinetic Studies

Cited by 62 publications

References 31 publications

Pb2+ Effects on Growth, Lipids, and Protein and DNA Profiles of the Thermophilic Bacterium Thermus Thermophilus

Pb2+ Effects on Growth, Lipids, and Protein and DNA Profiles of the Thermophilic Bacterium Thermus Thermophilus

Biosorption of Iron (II) by <i>Lactobacillus fermentum</i> from Aqueous Solutions

A Novel Biosorbent for Preconcentrations of Co(II) and Hg(II) in Real Samples

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