Evaluation of Europium Biosorption Using Deinococcus radiodurans

Jena, Ananya; Pradhan, Sanghamitra; Mishra, Sujata; Sahoo, Naresh Kumar

doi:10.1007/s40710-020-00479-8

Cited by 10 publications

(14 citation statements)

References 54 publications

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“…The pH is one the key parameters in the adsorption experiments since it affects the charge of the binding sites of the biosorbent and chemical speciation of metals [4]. Figure 1 shows the pH dependence of Eu(III) adsorption on A. platensis at pH range 2.0-6.0.…”

Section: Biosorptionmentioning

confidence: 99%

“…Eu(III), with a content of circa 0.000106% in earth, is one of the most critical rare earth elements [1]. Recently Eu(III) has been widely requested in the production of LED and LCD flat screen displays, batteries, fiber optics, portable wireless installations, superconductors, magnets, light emitting diodes and fluorescent lighting, and catalysts [2][3][4]. Beside wide application in industry, Eu(III) complexes are of interest for sensing and targeting specific DNA structures, bioimaging, melamine detection, and cellular imaging [3].…”

Section: Introductionmentioning

confidence: 99%

“…In view of the high commercial value of Eu(III), it is important to apply innovative technologies to recover it from secondary resources, for example, electronic wastes or wastewater [4,6]. Equally important is the need to reduce the impact of Eu(III) ions on water, soil, agricultural crops, and consequently human health.…”

Section: Introductionmentioning

confidence: 99%

“…Several methods are traditionally used for Eu(III) recovery, in particular solvent extraction, ion exchange, co-precipitation, electrochemical reduction, and leaching in sulfuric acid [4,9,10]. However, these techniques have several serious limitations, such as the requirement of large volumes of solvents and other chemicals, high energy consumption, and generation of large amount of hazardous waste products.…”

Section: Introductionmentioning

confidence: 99%

“…Bacteria Bacillus thuringiensis demonstrated excellent biosorption capacity (160 mg/g) toward Eu(III) (Pan et al 2017). Equally good results were obtained when Deinococcus radiodurans was used for Eu(III) recovery from aquatic solutions [4]. Studying the bioaccumulation of Eu(III) by a thermophilic bacterium, Thermus scotoductus SA-01, authors revealed that strain can survive at Eu levels up to 1 mM [3].…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Biosorption and Bioaccumulation Capacity of Arthospiraplatensis toward Europium Ions

Yushin

Zinicovscaia

Cepoi

et al. 2022

Water

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Europium recovery from wastewater is determined by its high significance for industry and toxicity for living organisms. The capacity of cyanobacteria Arthospira platensis (Spirulina) to remove Eu(III) through biosorption and bioaccumulation was evaluated. In biosorption experiments, the effects of four variables pH, metal concentration, time, and temperature on metal removal were studied. In bioaccumulation experiments, the effect of Eu(III) concentrations on biomass bioaccumulation capacity and biochemical composition was assessed. The efficiency of Eu(III) uptake in both experiments was determined using ICP-AES techniques. Maximum biosorption of Eu(III) was achieved at pH 3.0. Equilibrium data fitted well with the Langmuir and Freundlich models, with maximum adsorption capacity of 89.5 mg/g. The pseudo-first-, pseudo-second-order, and Elovich models were found to correlate well with the experimental data. According to thermodynamic studies the sorption was feasible, spontaneous, and endothermic in nature. At addition of Eu(III) ions in the cultivation medium in concentrations of 10–30 mg/L, its accumulation in biomass was 9.8–29.8 mg/g (removal efficiency constituting 98–99%). Eu(III) did not affect productivity and content of carbohydrates and pigments in biomass but led to the decrease of the content of protein and an increase in the amount of MDA. The high Eu(III) biosorption and bioaccumulation efficiency of Arthrospira platensis may constitute an effective and eco-friendly strategy to recover it from contaminated environment.

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Section: Biosorptionmentioning

confidence: 99%