Study of kinetic, thermodynamic, and isotherm of Sr adsorption from aqueous solutions on graphene oxide (GO) and (aminomethyl)phosphonic acid–graphene oxide (AMPA–GO)

Alamdarlo, Farzad Vaziri; Solookinejad, Ghahraman; Zahakifar, Fazel; Jalal, Masoud Rezvani; Jabbari, Masoud

doi:10.1007/s10967-021-07845-2

Cited by 21 publications

(8 citation statements)

References 84 publications

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“…Similarly, granular manganese oxide shows relatively good sorption capacity, very weak affinity, and long equilibrium time [ 73 ]. The sorption properties of SA*PEI, based on the compromise between sorption capacity and affinity, kinetics, and pH, are comparable to those reported for amidoximated algal/PEI beads [ 38 ], functionalized silica beads [ 74 ], functionalized graphene oxide [ 75 ], and graphene oxide [ 76 ]. Compared with a commercial ion-exchanger (i.e., sulfonated Dowex 50W-X8 resin) that also bears sulfonic groups, the sorption capacity, determined at lower pH (i.e., 3.7), is of the same order (as well as the equilibrium time) while the affinity coefficient is significantly higher (up to 206 L mmol −1 ).…”

Section: Resultssupporting

confidence: 68%

New Process for the Sulfonation of Algal/PEI Biosorbent for Enhancing Sr(II) Removal from Aqueous Solutions—Application to Seawater

Hamza

Guibal²,

Althumayri

et al. 2022

Molecules

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Sulfonic resins are highly efficient cation exchangers widely used for metal removal from aqueous solutions. Herein, a new sulfonation process is designed for the sulfonation of algal/PEI composite (A*PEI, by reaction with 2-propylene-1-sulfonic acid and hydroxylamine-O-sulfonic acid). The new sulfonated functionalized sorbent (SA*PEI) is successfully tested in batch systems for strontium recovery first in synthetic solutions before investigating with multi-component solutions and final validation with seawater samples. The chemical modification of A*PEI triples the sorption capacity for Sr(II) at pH 4 with a removal rate of up to 7% and 58% for A*PEI and SA*PEI, respectively (with SD: 0.67 g L−1). FTIR shows the strong contribution of sulfonate groups for the functionalized sorbent (in addition to amine and carboxylic groups from the support). The sorption is endothermic (increase in sorption with temperature). The sulfonation improves thermal stability and slightly enhances textural properties. This may explain the fast kinetics (which are controlled by the pseudo-first-order rate equation). The sulfonated sorbent shows a remarkable preference for Sr(II) over competitor mono-, di-, and tri-valent metal cations. Sorption properties are weakly influenced by the excess of NaCl; this can explain the outstanding sorption properties in the treatment of seawater samples. In addition, the sulfonated sorbent shows excellent stability at recycling (for at least 5 cycles), with a loss in capacity of around 2.2%. These preliminary results show the remarkable efficiency of the sorbent for Sr(II) removal from complex solutions (this could open perspectives for the treatment of contaminated seawater samples).

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Section: Resultssupporting

confidence: 68%

New Process for the Sulfonation of Algal/PEI Biosorbent for Enhancing Sr(II) Removal from Aqueous Solutions—Application to Seawater

Hamza

Guibal²,

Althumayri

et al. 2022

Molecules

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“…When E ≤ 8 kJ·mol –1 , the adsorption process is a physical process, and when E > 8 kJ·mol –1 , the adsorption process is a chemical process. The E value can be calculated by the following formula: E = 1 2 K DR …”

Section: Resultsmentioning

confidence: 99%

Metal Organic Frameworks of ANA Topology as an Effective Adsorbent for Co(II) and Mn(II) in Solution

et al. 2023

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Long-lived radionuclides such as 60Co and 54Mn in radioactive waste water must be properly treated to protect the environment from long-term radioactive hazard. In this study, nine zeolite imidazole frameworks (ZIFs) were initially synthesized to investigate an effective adsorbent for Co(II) and Mn(II) in solution. Zeolite imidazole framework-14 (ZIF-14) with good performance was selected, and subsequent characterization and adsorption performance tests were conducted. The results show that ZIF-14 has good hydrothermal stability within 520 °C. Under the conditions of pH = 6.72, T = 303 K and the initial concentration of 500 mg·L–1, the saturated adsorption capacity for Co(II) and Mn(II) reached 148.55 mg·g–1 and 252.85 mg·g–1, respectively. The analysis of thermodynamic parameters shows that the adsorption process of ZIF-14 to Co(II) and Mn(II) is spontaneous and endothermic. The pseudo-second-order kinetic model, Langmuir isotherm model, and Boyd model are more in line with the adsorption process of Co(II) and Mn(II) by ZIF-14, which proves that the active sites on the surface of ZIF-14 are evenly distributed, and the adsorption process is single-molecule chemical layer adsorption. In addition, the liquid film diffusion dominates the adsorption rate during the adsorption process of Co(II) and Mn(II) by ZIF-14. ZIF-14 has good selectivity for cobalt and manganese in both high-concentration interference ion solution and multimetal ion solution with the same concentration. Moreover, ZIF-14 still has good adsorption performance after five times of elution.

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“…Both the HF-MXene and KOH-MXene prepared in this study show higher Sr 2þ removal efficiency than the previous studies. [32][33][34][35][36][37] The enhanced efficiency can be explained by unique characteristics of MXene, including the 2D structure, large surface area, chemical stability, and the surface functional groups for enhanced adsorption. The sample shows the highest efficiency because of the higher concentration of -OH and -O surface terminations, which confers more active sites.…”

Section: Resultsmentioning

confidence: 99%

Synthesis of Titanium Carbide MXene Nanosheets by Ecofriendly Technique for Strontium Ion Adsorption

Colkesen,

Fitriani,

Yoon

2023

Physica Status Solidi (a)

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Two‐dimensional titanium carbide (Ti3C2Tx, where Tx indicates the surface termination) MXene nanosheets were synthesized by etching the Ti3AlC2 MAX phase using two kinds of etchants: potassium hydroxide (KOH) base and hydrofluoric (HF) acid. This study aimed to reduce the environmental side‐effects caused by the etchant in fabricating MXene nanosheets to extract strontium ions (Sr2+) from nuclear wastewater. Ti3C2Tx MXene synthesized using alkaline KOH etchant showed a 99% Sr2+ removal rate, which is much higher than that synthesized using the conventional HF etchant (82%). The enhanced Sr2+ removal rate associated with KOH etching was explained by unique surface termination, which offers more active adsorption sites for Sr2+ by the partial hydrolysis of Ti–C bonds on the surface of MXene nanosheets.This article is protected by copyright. All rights reserved.

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Study of kinetic, thermodynamic, and isotherm of Sr adsorption from aqueous solutions on graphene oxide (GO) and (aminomethyl)phosphonic acid–graphene oxide (AMPA–GO)

Cited by 21 publications

References 84 publications

New Process for the Sulfonation of Algal/PEI Biosorbent for Enhancing Sr(II) Removal from Aqueous Solutions—Application to Seawater

New Process for the Sulfonation of Algal/PEI Biosorbent for Enhancing Sr(II) Removal from Aqueous Solutions—Application to Seawater

Metal Organic Frameworks of ANA Topology as an Effective Adsorbent for Co(II) and Mn(II) in Solution

Synthesis of Titanium Carbide MXene Nanosheets by Ecofriendly Technique for Strontium Ion Adsorption

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