Spectroscopic determination of U(VI) species sorbed by the Chlorella (Chlorella pyrenoidosa) fresh water algae

Singhal, R. K.; Basu, Hirakendu; Pimple, Mehzabin Vivek; Manisha, V.; Basan, M. K. T.; Reddy, Α. V. R.

doi:10.1007/s10967-013-2455-5

Cited by 30 publications

(10 citation statements)

References 15 publications

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“…On the other hand, various biomasses such as algae, fungi, and unicellular bacteria were also studied for adsorption or binding of uranium ion from aqueous solutions (Khani 2011). Among them, algal species either in living or in chemically modified form have been employed for the removal of uranium ion (Erkaya et al 2014;Singhal et al 2013;Lee et al 2014;Cecal et al 2012). The modification of microbial biomasses with various ligands such as polyethyleneimine (PEI), amidoxime, and chlorine dioxide groups improved their adsorption characteristics He et al 2014).…”

Section: Introductionmentioning

confidence: 99%

Study of polyethyleneimine- and amidoxime-functionalized hybrid biomass of Spirulina (Arthrospira) platensis for adsorption of uranium (VI) ion

Bayramoğlu

Akbulut

Arıca

2015

Environ Sci Pollut Res

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This study investigates the potential application of the polyethyleneimine- (PEI) and amidoxime-modified Spirulina (Arthrospira) platensis biomasses for the removal of uranium ion in batch mode using the native biomass as a control system. The uranium ion adsorption was also characterized by attenuated total reflectance Fourier transform infrared (ATR-FTIR) spectra, zeta potential analysis, and surface area measurement studies. The effects of pH, biomass amount, contact time, initial uranium ion concentration, and ionic strength were evaluated by using native and modified algal biomass preparations. The uranium ion removal was rapid, with more than 70% of total adsorption taking place in 40 min, and equilibrium was established within 60 min. From the experimental data, it was found that the amount of adsorption uranium ion on the algal preparations decreased in the following series: amidoxime-modified algal biomass > PEI-modified algal biomass > native algal biomass. Maximum adsorption capacities of amidoxime- and PEI-modified, and native algal biomasses were found to be 366.8, 279.5, and 194.6 mg/g, respectively, in batchwise studies. The adsorption rate of U(VI) ion by amidoxime-modified algal biomass was higher than those of the native and PEI-modified counterparts. The adsorption processes on all the algal biomass preparations followed by the Dubinin-Radushkevitch (D-R) and Temkin isotherms and pseudo-second-order kinetic models. The thermodynamic parameters were determined at four different temperatures (i.e., 15, 25, 35, and 45 °C) using the thermodynamics constant of the Temkin isotherm model. The ΔH° and ΔG° values of U(VI) ion adsorption on algal preparations show endothermic heat of adsorption; higher temperatures favor the process. The native and modified algal biomass preparations were regenerated using 10 mM HNO3. These results show that amidoxime-modified algal biomass can be a potential candidate for effective removal of U(VI) ion from aqueous solution.

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Section: Introductionmentioning

confidence: 99%

Study of polyethyleneimine- and amidoxime-functionalized hybrid biomass of Spirulina (Arthrospira) platensis for adsorption of uranium (VI) ion

Bayramoğlu

Akbulut

Arıca

2015

Environ Sci Pollut Res

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“…So, seeking a way for cleaning uranium ions contaminated water effectively and thoroughly has become an important research topic. In general, heavy metal ions in wastewaters can be removed by physical, chemical and biological methods such as biosorption, flocculation, coagulation, precipitation, membrane filtration and electrochemical techniques [6][7][8][9][10]. Among them, biosorption is becoming one of the more attractive alternative methods for the removal of radioactive and heavy metals ions from wastewater [11][12][13][14].…”

Section: Introductionmentioning

confidence: 99%

“…A variety of low cost fungal materials (native and modified) have been used as biosorbents for the removal of organic pollutants and heavy metal ions from aqueous solutions, including Lentinus sajor-caju [3,[17][18][19], Trametes versicolor [6], Aspergillus niger [14,20], and Lentinus edodes [21][22][23][24][25]. Additionally, uranium biosorption by various microbial biomasses (i.e., fungi, yeast, algae, and unicellular bacteria) are reported in the literature [3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20]. These microbial biomasses are capable of uptake of uranium greater than 40 % of their dry biomass weight.…”

Section: Introductionmentioning

confidence: 99%

Amidoxime functionalized Trametes trogii pellets for removal of uranium(VI) from aqueous medium

Bayramoğlu

Arıca

2015

J Radioanal Nucl Chem

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Amidoxime modified Trametes trogii pellets were prepared by sequential reaction of fungal surfaces with glutaraldehyde, diaminomaleonitrile and hydroxylamine. Maximum biosorption capacities of the modified and native pellets were found to be 447.4 and 238.2 mg U(VI) g -1 fungal pellets, respectively. Biosorption equilibriums were established in about 45 min and the correlation regression coefficients show that the adsorption process can be well-defined by Langmuir equation. The biosorption of U(VI) ions was well described by the pseudo-second order kinetic model. The variations in enthalpy and entropy for the biosorbents were also calculated.

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“…Grant et al [44] put forward an egg-box model to explain this binding mechanism and believed that these easily desorbed and exchangeable U(VI) might be caught in the polysaccharide network. By contrast, if it is adsorbed on specific binding sites, it would not be affected because the compactly binding uranyl ions could coordinate with the amino groups of algae [45].…”

Section: Effect Of Co-ionsmentioning

confidence: 99%

Batch study of uranium biosorption by Elodea canadensis biomass

Yao

Zhu

et al. 2016

J Radioanal Nucl Chem

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The adsorption of U(VI) onto Elodea canadensis was studied via a batch equilibrium method. Kinetic investigation indicated that the U(VI) adsorption by E. canadensis reached an equilibrium in 120 min and followed pseudo-second-order kinetics. The solution pH was the most important parameter controlling adsorption of U(VI) and the optimum pH for U(VI) removal is 6.0. The U(VI) biosorption can be well described by Langmuir model. IR spectrum analysis revealed that -NH 2 , -OH, C=O and C-O could bind strongly with U(VI). XPS spectrum analysis implied that ion exchange and coordination mechanism could be involved in the U(VI) biosorption process.

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Spectroscopic determination of U(VI) species sorbed by the Chlorella (Chlorella pyrenoidosa) fresh water algae

Cited by 30 publications

References 15 publications

Study of polyethyleneimine- and amidoxime-functionalized hybrid biomass of Spirulina (Arthrospira) platensis for adsorption of uranium (VI) ion

Study of polyethyleneimine- and amidoxime-functionalized hybrid biomass of Spirulina (Arthrospira) platensis for adsorption of uranium (VI) ion

Amidoxime functionalized Trametes trogii pellets for removal of uranium(VI) from aqueous medium

Batch study of uranium biosorption by Elodea canadensis biomass

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