Rapid and selective capture of perrhenate anion from simulated groundwater by a mesoporous silica-supported anion exchanger

Chen, Lifeng; Yin, Xiangbiao; Yu, Qing; Lu, Siming; Meng, Fanyue; Ning, Shunyan; Wang, Xinpeng; Wei, Yuezhou

doi:10.1016/j.micromeso.2018.07.029

Cited by 75 publications

(21 citation statements)

References 43 publications

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“…The peaks at 3341 and 1640 cm −1 were related to the hydroxyl stretching and bending vibrations of adsorbed water, respectively. The bands at 1107, 798, and 497 cm −1 belonged to the characteristic peaks of SiO 2 [29]. Moreover, the weak adsorption band at 2925 cm −1 in the SiPAR samples corresponded to the C−H of methylene groups [30], implying the presence of organic polymers.…”

Section: Characterizationmentioning

confidence: 94%

Removal of V(V) From Solution Using a Silica-Supported Primary Amine Resin: Batch Studies, Experimental Analysis, and Mathematical Modeling

Huang

Chen

et al. 2020

Molecules

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Every year, a large quantity of vanadium-containing wastewater is discharged from industrial factories, resulting in severe environmental problems. In particular, V(V) is recognized as a potentially hazardous contaminant due to its high mobility and toxicity, and it has received considerable attention. In this study, a silica-supported primary amine resin (SiPAR) was prepared by in-situ polymerization, and the V(V) adsorption from the solution was examined. The as-prepared resin exhibited fast adsorption kinetics, and it could attain an equilibrium within 90 min for the V(V) solution concentration of 100 mg/L at an optimum pH of 4, whereas the commercial D302 resin required a treatment time of more than 3 h under the same conditions. Furthermore, the maximum adsorption capacity of the resin under optimum conditions for V(V) was calculated to be 70.57 mg/g. In addition, the kinetics and isotherm data were satisfactorily elucidated with the pseudo-second-order kinetics and Redlich–Peterson models, respectively. The silica-based resin exhibited an excellent selectivity for V(V), and the removal efficiency exceeded 97% in the presence of competitive anions at 100 mmol/L concentrations. The film mass-transfer coefficient (kf) and V(V) pore diffusivity (Dp) onto the resins were estimated by mathematical modeling. In summary, this study provided a potential adsorbent for the efficient removal of V(V) from wastewater.

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Section: Characterizationmentioning

confidence: 94%

Removal of V(V) From Solution Using a Silica-Supported Primary Amine Resin: Batch Studies, Experimental Analysis, and Mathematical Modeling

Huang

Chen

et al. 2020

Molecules

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“…They readily adsorb water and swell. High water swelling usually contributes to poor mechanical properties and high column pressure drops [24,37], which hampers chromatographic performance. In addition, the swelling rate often changes with salt concentration and type, thus making the resin volume inconstant.…”

Section: Apparent Volume and Swelling Ratementioning

confidence: 99%

“…The separation principle is that the lead cation can compound with chloride ions in the hydrochloric acid solution and then form anionic complexes that could be adsorbed by anion exchange resins; other metal cations like alkalis and alkaline earth metal cations cannot form such a complex. However, these resins suffer from poor adsorption kinetics [23][24][25], thus leading to a long separation time and low efficiency. More recently, scholars have developed novel anion exchangers for cationic metal-organic framework materials (MOF) [26][27][28], layered double-metal hydroxides materials (LDH) [29][30][31], inorganic cationic extended frameworks materials [32,33], and functionalized graphene oxide materials [34][35][36].…”

Section: Introduction 3 210mentioning

confidence: 99%

Fast recovery of lead from hydrochloric acid via a novel silica-supported anion exchange resin for the determination of 210Pb in environmental samples

Chen

Zhang

He³

et al. 2020

Chemical Engineering Journal

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“…Chemical and physical properties of technetium are common with rhenium. The nature of noncomplexing, high water solubility, high volatility and negative charge of pertechnetate, all take responsibilities for its high mobility in water, making it a problematic nuclide during the environmental restoration activities [ 4 ]. The novel and practical technologies for pertechnetate sequestration/removal, are needed to reduce the potential contamination of the environment and the threat to living organisms [ 1 ].…”

Section: Introductionmentioning

confidence: 99%

“…The novel and practical technologies for pertechnetate sequestration/removal, are needed to reduce the potential contamination of the environment and the threat to living organisms [ 1 ]. Therefore, developing high-efficient functional materials that can rapidly and selectively capture TcO 4 − , is of great significance [ 4 ].…”

Section: Introductionmentioning

confidence: 99%

Surface Complexation Models of Pertechnetate on Biochar/Montmorillonite Composite—Batch and Dynamic Sorption Study

et al. 2020

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The study summarizes the results of monitoring the properties of two types of sorbents, BC1 (biochar sample 1) and BC2a (biochar sample 2), prepared by pyrolysis of bamboo biomass (BC1) and as its composite with montmorillonite K10 (BC2a). The main goal was to study their applicability to the Tc (VII) separation from liquid wastes, using NH4ReO4 as a carrier. The research was focused on determining the sorbents surface properties (by XRF (X-ray fluorescence) method and potentiometric titration in order to determine the properties of surface groups—Chemical Equilibrium Model (CEM) and Ion Exchange Model (IExM) models were applied here). As well as monitoring Tc (VII) (+Re(VII)) sorption, especially to determine equilibrium isotherm, the influence of pH and kinetics. The subject of research was also the dynamics of sorption, including its mathematical–physical modeling. Both sorbents have good properties against Tc (VII), however BC2a, due to the presence of montmorillonite, is more advantageous in this respect. It has a higher sorption capacity and faster kinetic investigation. An important finding is that the optimal pH is 2–3, which is related not only to the protonation of surface groups (they have a positive charge), but also to the negative form of the existence of Tc (VII) and Re (VII): TcO4− and ReO4−.

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Rapid and selective capture of perrhenate anion from simulated groundwater by a mesoporous silica-supported anion exchanger

Cited by 75 publications

References 43 publications

Removal of V(V) From Solution Using a Silica-Supported Primary Amine Resin: Batch Studies, Experimental Analysis, and Mathematical Modeling

Removal of V(V) From Solution Using a Silica-Supported Primary Amine Resin: Batch Studies, Experimental Analysis, and Mathematical Modeling

Fast recovery of lead from hydrochloric acid via a novel silica-supported anion exchange resin for the determination of 210Pb in environmental samples

Surface Complexation Models of Pertechnetate on Biochar/Montmorillonite Composite—Batch and Dynamic Sorption Study

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