Isotope fractionation and spectroscopic analysis as an evidence of Cr(VI) reduction during biosorption

Šillerová, Hana; Chrastný, Vladislav; Čadková, Eva; Komárek, Michael

doi:10.1016/j.chemosphere.2013.09.054

Cited by 30 publications

(17 citation statements)

References 31 publications

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“…Depending on the cells metabolism, biosorption may be classified into metabolism dependent and independent. Varieties of natural materials, particularly of cellulosic nature, have been considered as potential biosorbents for toxic heavy metals [5][6][7][8][9]. The task for looking the new and potentially feasible metal biosorbents has a wide scope.…”

Section: Desalination and Water Treatmentmentioning

confidence: 99%

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Reclamation of wastewater containing Cu(II) using alginated Mentha spicata biomass

Ansari

Hanif

Rasool³

et al. 2016

Desalination and Water Treatment

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A B S T R A C TThe task of looking for new and potentially feasible metal biosorbents has a wide scope. In the present work, optimization of thermodynamic and kinetic parameters has been carried out for the removal of Cu(II) from aqueous solution using Mentha spicata distillation waste (native and alginated) biomass. M. spicata distillation waste biomass was efficiently used for toxic Cu(II) removal under optimized conditions of pH, biosorbent dose, biosorbent size, initial metal concentration, contact time, and desorption. Langmuir adsorption isotherm and pseudo-second-order kinetic models fitted well to Cu(II) sorption by native and alginated M. spicata distillation waste biomass. The significant changes in the vibrational frequencies of Fourier transform infrared spectra implicated that carboxylic, carbonyl, and nitrile groups played vital role during Cu(II) biosorption process. A new peak at 1,735 cm −1 corresponding to the -C=O groups appeared, suggesting that -C-O groups oxidized to -C=O groups during biosorption process. Alginated M. spicata distillation waste biomass exhibited a very high Cu(II) adsorption capacity (176.96 mg/g).

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Section: Desalination and Water Treatmentmentioning

confidence: 99%

“…Pseudo-first-order equation (5) is expressed as: log ðq e À qÞ ¼ log q e À ðK 1;ads tÞ = 2.303 (5) Pseudo-second-order equation (6) is given as:…”

Section: Effect Of Timementioning

confidence: 99%

Reclamation of wastewater containing Cu(II) using alginated Mentha spicata biomass

Ansari

Hanif

Rasool³

et al. 2016

Desalination and Water Treatment

View full text Add to dashboard Cite

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“…Forty beads of each type were mixed up with 15 mL of Cr(VI) solution (300 mg/L, pH 4.5) in stoppered glass tubes and kept under constant agitation (40 rpm) in a rotary mixer (Rotator Drive STR 4, Stuart Scientific) for a given time interval. The selection of the pH for Cr(VI) removal was chosen on the basis of the results obtained in our previous study, where a pH of 4.5 was found to be the optimal pH for Cr(VI) biosorption by brewers draff [25,26]. The samples were collected at given time intervals for up to 48 h. After the sorption process, the beads were removed from the solution, and the total chromium concentrations in the filtered (0.45 m) samples were determined by FAAS (Flame Atomic Absorption Spectroscopy, Varian SpectrAA 220FS).…”

Section: Kinetic Sorption Experimentsmentioning

confidence: 99%

“…The potential of both biomaterials to reduce Cr(VI) to Cr(III) was shown by isotope fractionation and spectroscopic analysis [26]. In this study, an experimental design was performed in order to determine the best conditions to encapsulate both biomaterials (brewers draff and grape waste) in calcium alginate to obtain synthesized beads with a high sorption efficiency.…”

Section: Introductionmentioning

confidence: 99%

Biosorbent encapsulation in calcium alginate: Effects of process variables on Cr(VI) removal from solutions

Šillerová

Komárek

Liu

et al. 2015

International Journal of Biological Macromolecules

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“…Previous efforts have been dedicated to develop various biomaterials including microbes, plants and agricultural bio‐waste . For example, Cr(VI) could be bio‐reduced to Cr(III) by Meiothermus using methane as the sole electron donor .…”

Section: Introductionmentioning

confidence: 99%

Simultaneous sorption and reduction of Cr(VI) in aquatic system by microbial extracellular polymeric substances from Klebsiella sp. J1

Wei

et al. 2018

J of Chemical Tech & Biotech

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BACKGROUND Cr(VI) is being increasingly used in a variety of fields, including electroplating, metallurgy, pigment synthesis and leather tanning. The possible application of a microbial extracellular polymeric substance (EPS) from Klebsiella sp. J1 with abundant functional groups in remediating Cr(VI) pollution in water system was demonstrated. RESULTS The maximum biosorption capacity of EPS for Cr(VI) was found to be 53.3 mg g−1 at an EPS dose of 1.5 g L−1, which was better than the majority of reported biosorbents. The adsorption of EPS for Cr(VI) was a spontaneous and endothermic process. The removal mechanism of Cr(VI) in aquatic environments was explored qualitatively and quantitatively by Zeta‐potential meter, X‐ray photoelectron spectrometer (XPS) as well as Fourier transform infrared spectrometer. The superior Cr(VI) removal performance was attributed mainly to Cr(VI) adsorption on EPS via chelation and ion‐exchange sorption, and the efficient reduction (82.3%) of Cr(VI) to Cr(III) by benzenoid amine (–NH–) on EPS, followed by generated Cr(III) immobilization on the surface of EPS via surface physical sorption and chelation, which might control the reaction rate of Cr(VI) removal process. CONCLUSION The removal of Cr(VI) by EPS from Klebsiella sp. J1 was attributed mainly to simultaneous sorption and reduction of Cr(VI) by EPS. The results demonstrated that EPS from Klebsiella sp. J1 has great potential in treating Cr(VI)‐contaminated water. © 2018 Society of Chemical Industry

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Isotope fractionation and spectroscopic analysis as an evidence of Cr(VI) reduction during biosorption

Cited by 30 publications

References 31 publications

Reclamation of wastewater containing Cu(II) using alginated Mentha spicata biomass

Reclamation of wastewater containing Cu(II) using alginated Mentha spicata biomass

Biosorbent encapsulation in calcium alginate: Effects of process variables on Cr(VI) removal from solutions

Simultaneous sorption and reduction of Cr(VI) in aquatic system by microbial extracellular polymeric substances from Klebsiella sp. J1

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