A simple spectrophotometric study of adsorption of Hg(II) on glycine functionalised magnetic nanoparticle entrapped alginate beads

Lilhare, Surbhi; Mathew, Sunitha B.; Singh, Ajaya Kumar; Sankarasubramanian, Sreevidya

doi:10.1080/03067319.2021.1884242

Cited by 6 publications

(2 citation statements)

References 73 publications

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“…At times greater than 80 min, the sorption e ciency remained constant. After saturation of active sites, the uptake e ciency reached equilibrium (Lilhare et al, 2021). Therefore, the utmost adsorption e ciency of Hg 2+ ion by bentonite and bentonite@biochar@magnetic nanocomposite in 80 min were obtained as 98.78% and 97.67%, respectively.…”

Section: E Cient Parameters On Uptake Of Hg 2+mentioning

confidence: 93%

Highly reusable bentonite clay@biochar@Fe3O4 nanocomposite for Hg(II) removal from synthetic and real wastewater

Alali

Almojil

Almohana

et al. 2023

Environ Sci Pollut Res

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The present research investigates the performance of bentonite clay@biochar@magnetic nanocomposite in removing mercury (Hg 2+ ) ions from aqueous media. Bentonite clay@biochar@magnetic nanocomposite was characterized by BET, VSM, TEM, Mapping, EDX, SEM, FT-IR, XRD and Raman analyses. According to the results, the highest uptake e ciency of Hg 2+ was attained at pH 6, Hg 2+ concentration of 10 ppm, 80 min, and composite dose of 1.5 g/L. In these conditions, the uptake e ciency of bentonite@activated carbon@Fe 3 O 4 nanocomposite and bentonite were 98.78% and 97.67%, respectively, which are remarkable values. Also, the W max value for Hg 2+ removal using bentonite@biochar@magnetic nanocomposite and bentonite were 66.66 and 60.98 mg/g, respectively.Moreover, the uptake process of Hg 2+ ions using bentonite@biochar@magnetic nanocomposite and bentonite was spontaneous, physical, favorable and exothermic. Besides, the impact of various divalent ions such as Co 2+ , Cu 2+ , Pb 2+ , Ni 2+ , and Zn 2+ was studied on the elimination e ciency of Hg 2+ using bentonite and bentonite clay@biochar@magnetic sorbents. The results showed that Co 2+ and Zn 2+ ions have the highest and lowest interfering effects in the removal of Hg 2+ . Also, the reusability of adsorbents showed that they have high stability and can be used in at least 5 reuse cycles with high uptake e ciency. Additionally,

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Section: E Cient Parameters On Uptake Of Hg 2+mentioning

confidence: 93%

Highly reusable bentonite clay@biochar@Fe3O4 nanocomposite for Hg(II) removal from synthetic and real wastewater

Alali

Almojil

Almohana

et al. 2023

Environ Sci Pollut Res

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“…The BET surface area of the mC18/Pa/Alg bead was 153.11 m 2 g −1 , notably higher than other reported alginate beads (2.16-32.20 m 2 g −1 ). 17,27,28 This difference could be due to the synthesis process and precursor applied. The BJH pore volume of 0.29 cm 3 g −1 and average pore diameter of 7.69 nm conrmed that the bead obtained in this work was of the mesoporous class (2 nm < pore size < 50 nm).…”

Section: Preparation Of Real Water Samplesmentioning

confidence: 99%

A novel magnetite C18/paracetamol/alginate adsorbent bead for simultaneous extraction of synthetic antioxidants and bisphenol A in water samples

Sulaiman,

Hama,

Saithong

et al. 2024

RSC Adv.

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Agmatine ligand functionalized magnetic alginate beads for removal of U(VI) ions from solution

Bayramoglu,

Arica

2024

J Radioanal Nucl Chem

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In the presented work, magnetic alginate (MA) beads were prepared and activated with epichlorohydrin and then functionalized with agmatine ligands (MA-A). The materials were analyzed by FTIR, SEM, XRD, and BET methods. The adsorption capacity of the MA-A for U(VI) was 451.4 mg/g. The Langmuir isotherm model well described the experimental data for the adsorption of U(VI) ions. The second-order kinetic model data proposed that the adsorption of U(VI) ions preferred the chemisorption mechanism. The adsorption enthalpy of the MA-A beads for U(VI) ions was 35.4 kJ/mol. After seven cycles of use, the adsorption capacity of MA-A beads was not significantly changed for U(VI) ions. Finally, the functionalization of MA beads with agmatine ligand can be a good candidate for applications for environmental technologies to remove metal ions.

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A simple spectrophotometric study of adsorption of Hg(II) on glycine functionalised magnetic nanoparticle entrapped alginate beads

Cited by 6 publications

References 73 publications

Highly reusable bentonite clay@biochar@Fe3O4 nanocomposite for Hg(II) removal from synthetic and real wastewater

Highly reusable bentonite clay@biochar@Fe3O4 nanocomposite for Hg(II) removal from synthetic and real wastewater

A novel magnetite C18/paracetamol/alginate adsorbent bead for simultaneous extraction of synthetic antioxidants and bisphenol A in water samples

Agmatine ligand functionalized magnetic alginate beads for removal of U(VI) ions from solution

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