Studies on the separation and in-situ sintering solidification of strontium by a highly-efficient titanate-based adsorbent

Li, Chunmin; Liu, Caocong; Chen, Lifeng; Ye, Zhenxiong; Zhang, Yusheng; Wang, Xinpeng; Wei, Yuezhou

doi:10.1016/j.micromeso.2019.109607

Cited by 17 publications

(3 citation statements)

References 47 publications

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“…The leaching amount of Ni ions was measured by GFAAS and the results are shown in Figure 9 . In addition, the leaching rate ( L ) was obtained by the following Equation [ 44 , 45 ]:

where q e (mg/g) is the equilibrium absorption capacity; m is the mass of the adsorbent, C t (mg/L) is the Ni concentration of the leachates at time t ; and V (mL) is the volume of the leaching solution.…”

Section: Resultsmentioning

confidence: 99%

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Study on Adsorption Behavior of Nickel Ions Using Silica-Based Sandwich Layered Zirconium-Titanium Phosphate Prepared by Layer-by-Layer Grafting Method

Zhao

Zhang

2021

Nanomaterials

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In this study, the composite of silica-based sandwich-layered zirconium-titanium phosphate was prepared by a layer-by-layer grafting method and its adsorption properties in a diluted solution of Ni ions were specifically researched by the bath experiment method. The field-emission scanning electron microscope (FESEM) results presented the smooth surface morphology of the pristine adsorbent and a rough surface morphology of the adsorbed adsorbent and the energy dispersive analysis (EDS) results ensured the presence of the original metal element (Si, O, Ti, P, Zr) and the captured nickel element on the adsorbent. The Fourier transformed infrared spectroscopy (FTIR) revealed the new band formation of -Si-Ti-O-, -Si-Ti-O-P-, and -Si-Ti-O-P-Zr-O-, which ensured the successful modification of the silica substrate by zirconium-titanium phosphate. The specific surface area and pore size distribution analysis indicated that the pore structure was changed from type-Ⅳ to H2-type and the specific surface area (BET) of the modified composite was 337.881 m2/g. In the bath experiment, the optimal pH for adsorbing Ni ions on the composite was ~8 with the equilibrium time 30 min at room temperature and the maximum sorption amount was 50.1 mg/g. The adsorption kinetics of the sorption process were corresponded to the pseudo-second-order kinetic equation and the isothermal adsorption data were fitted well to the Redlich-Peterson Model. Thermodynamic simulation results revealed the species of Ni ions and provided a reasonable pH scope for better removal of the Ni element in wastewater.

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“…The leaching amount of Ni ions was measured by GFAAS and the results are shown in Figure 9 . In addition, the leaching rate ( L ) was obtained by the following Equation [ 44 , 45 ]:

Section: Resultsmentioning

confidence: 99%

“…The leaching amount of Ni ions was measured by GFAAS and the results are shown in Figure 9. In addition, the leaching rate (L) was obtained by the following Equation [44,45]:…”

Section: Ni Ions Leaching and The Stability Of The Adsorbent Testmentioning

confidence: 99%

Study on Adsorption Behavior of Nickel Ions Using Silica-Based Sandwich Layered Zirconium-Titanium Phosphate Prepared by Layer-by-Layer Grafting Method

Zhao

Zhang

2021

Nanomaterials

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“…Abu-Nada reported graphene oxide as a Sr 2+ adsorbent in the aqueous system, with a maximum strontium adsorption capacity of 131.4 mg/g achieved. [22] Nevertheless, the traditional adsorbents for Sr 2+ , such as polyantimonic acid, [23] sodium titanate [24] and zeolite [25][26][27], and nanocarbon materials [28], etc., are often prepared in form of powder with a tiny particle size (mostly in nanoscale or submicron scale), hence may cause secondary pollution when applied in water since the separation of the adsorbents are laborious. It is also difficult for the powdery adsorbents to be shaped to fit purification devices.…”

Section: Introductionmentioning

confidence: 99%

Thiol-rich and ion-imprinted alginate hydrogel as a highly adsorptive and recyclable filtration membrane for rapid and selective Sr(II) removal

Zheng

Yin

Zhu

et al. 2023

Chemical Engineering Journal

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Removal of zinc ions from aqueous solution using zinc extractant-encapsulated hydrogels formed by Pickering emulsion technique

Gao

Chen

Zhao

et al. 2023

Environ Dev Sustain

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Studies on the separation and in-situ sintering solidification of strontium by a highly-efficient titanate-based adsorbent

Cited by 17 publications

References 47 publications

Study on Adsorption Behavior of Nickel Ions Using Silica-Based Sandwich Layered Zirconium-Titanium Phosphate Prepared by Layer-by-Layer Grafting Method

Study on Adsorption Behavior of Nickel Ions Using Silica-Based Sandwich Layered Zirconium-Titanium Phosphate Prepared by Layer-by-Layer Grafting Method

Thiol-rich and ion-imprinted alginate hydrogel as a highly adsorptive and recyclable filtration membrane for rapid and selective Sr(II) removal

Removal of zinc ions from aqueous solution using zinc extractant-encapsulated hydrogels formed by Pickering emulsion technique

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