Studies on the biosorption of Pb(II) ions using <i>Pseudomonas putida</i>

Selvaraj, Vimalnath; Subramanian, S.

doi:10.1080/01496395.2018.1464025

Cited by 5 publications

(4 citation statements)

References 32 publications

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“…Due to the widespread Pb contamination, bacteria have developed Pb resistance mechanisms (Levinson et al, 1996;Jaroslawiecka and Piotrowska-Seget, 2014). ( 1 (5) Pb extrusion via efflux pumps (Figure 6; Levinson et al, 1996;Silver and Phung le, 2005;Jaroslawiecka and Piotrowska-Seget, 2014;Subramanian, 2018).…”

Section: Lead (Pb)mentioning

confidence: 99%

Heavy Metal Toxicity in Armed Conflicts Potentiates AMR in A. baumannii by Selecting for Antibiotic and Heavy Metal Co-resistance Mechanisms

et al. 2020

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Acinetobacter baumannii has become increasingly resistant to leading antimicrobial agents since the 1970s. Increased resistance appears linked to armed conflicts, notably since widespread media stories amplified clinical reports in the wake of the American invasion of Iraq in 2003. Antimicrobial resistance is usually assumed to arise through selection pressure exerted by antimicrobial treatment, particularly where treatment is inadequate, as in the case of low dosing, substandard antimicrobial agents, or shortened treatment course. Recently attention has focused on an emerging pathogen, multi-drug resistant A. baumannii (MDRAb). MDRAb gained media attention after being identified in American soldiers returning from Iraq and treated in US military facilities, where it was termed "Iraqibacter." However, MDRAb is strongly associated in the literature with war injuries that are heavily contaminated by both environmental debris and shrapnel from weapons. Both may harbor substantial amounts of toxic heavy metals. Interestingly, heavy metals are known to also select for antimicrobial resistance. In this review we highlight the potential causes of antimicrobial resistance by heavy metals, with a focus on its emergence in A. baumanni in war zones.

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Section: Lead (Pb)mentioning

confidence: 99%

Heavy Metal Toxicity in Armed Conflicts Potentiates AMR in A. baumannii by Selecting for Antibiotic and Heavy Metal Co-resistance Mechanisms

et al. 2020

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“…The linearized pseudo-second-order kinetic model is given by [2,41]:tqt=1k2×qe2+1qe×t=1qe×t+1k2×qe2, where k2 (g/mg/min) represents the adsorption rate constant of the pseudo-second-order model. The values of qe and k2 were evaluated from the slope and intercept of the linear plot between normalt/qt and t.…”

Section: Resultsmentioning

confidence: 99%

“…Recently, many studies have focused on the utilization of agricultural waste in the removal of Pb 2+ [1]. The potential of biosorption to replace conventional methods has been explored in previous studies because of its faster adsorption and lower cost [2]. However, the adsorption capacity of most biosorbents in nature is still low, which is an important reason for their slow development.…”

Section: Introductionmentioning

confidence: 99%

Adsorption of Pb2+ from Aqueous Solutions Using Novel Functionalized Corncobs via Atom Transfer Radical Polymerization

Chen

Zhao

2019

Polymers

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The present study developed novel functionalized corncobs introducing brushes with dense and active carboxyl groups (–COOH), named MC-g-PAA, for the highly efficient adsorption of Pb2+ from aqueous solutions. MC-g-PAA were synthesized via atom transfer radical polymerization (ATRP) and characterized by Fourier transform infrared spectroscopy (FTIR) and scanning electron microscopy (SEM). The amount of Pb2+ adsorbed on MC-g-PAA by hydrolysis with t-BuOK was 2.28 times greater than that with NaOH, attributed to the larger steric effect of t-BuOK, which reduced the hydrolysis of the bromo-ester groups. The influence of different parameters including the solid/liquid ratio, working solution pH, sorption temperature, and initial concentration and sorption time on the adsorption of Pb2+ were investigated in detail in batch experiments. Thermodynamic studies have shown that the adsorption process was spontaneous, endothermic, and accompanied by an increase in randomness. A better fit for the isotherm data was obtained using the Langmuir model than for the other four models and the maximum amount (qmax) of Pb2+ adsorbed on MC-g-PAA was 342.47 mg/g, which is 21.11 times greater when compared with that of pristine corncobs (16.22 mg/g). The adsorption of Pb2+ on MC-g-PAA was very fast and followed the pseudo-second-order kinetic equation with a correlation coefficient of 0.99999. This monolayer adsorption process was dominated by chemical adsorption, and may proceed according to complexation and electrostatic interactions between Pb2+ and the carboxylate groups. This study indicated that MC-g-PAA could be successfully used as an adsorbent for the removal of Pb2+ from aqueous solutions due to its excellent efficiency.

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“…Among the various microorganisms with capacity to bioremediate heavy metals, are the bacteria Pseudomonas putida and the yeast Saccharomyces cerevisiae, among others, which have the advantage of being good biosorbents in processes of biosorption and bioaccumulation (Massoud et al, 2019;Vimalnath & Subramanian, 2018).…”

Section: Introductionmentioning

confidence: 99%

Bioremediation of Lead in Water by Two Pure Microorganisms and Bacteria-Yeast Consortium

Espinoza-Castañeda¹,

Castelán²,

Rodríguez³

et al. 2022

JBNS

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Studies on the biosorption of Pb(II) ions using Pseudomonas putida

Cited by 5 publications

References 32 publications

Heavy Metal Toxicity in Armed Conflicts Potentiates AMR in A. baumannii by Selecting for Antibiotic and Heavy Metal Co-resistance Mechanisms

Heavy Metal Toxicity in Armed Conflicts Potentiates AMR in A. baumannii by Selecting for Antibiotic and Heavy Metal Co-resistance Mechanisms

Adsorption of Pb2+ from Aqueous Solutions Using Novel Functionalized Corncobs via Atom Transfer Radical Polymerization

Bioremediation of Lead in Water by Two Pure Microorganisms and Bacteria-Yeast Consortium

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