Application of kaolinite-based composite as an adsorbent for removal of uranyl ions from aqueous solution: kinetics and equilibrium study

Şenol, Zeynep Mine; Keskin, Zehra Seba; Özer, Ali; Şimşek, Selçuk

doi:10.1007/s10967-021-08070-7

Cited by 16 publications

(1 citation statement)

References 29 publications

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“…Clay materials have been extensively studied as additives to polymers to obtain high‐performance composite materials to be used in wastewater technologies for a sustainable environment. Recently, Senol et al added kaolinite to polyacrylamide to obtain an optimal UO 2 2+ ions absorbent 16 . Simsek et al 17 investigated the use of vermiculite to obtain a functional polyacrylamide composite.…”

Section: Introductionmentioning

confidence: 99%

Bentonite‐PDMS composite foams for oil spill recovery: Sorption performance and kinetics

Piperopoulos

Calabrese

Stаnkov-Jovаnović

et al. 2022

J of Applied Polymer Sci

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The aim of this article is the synthesis and characterization of bentonite‐filled siloxane foams for oil spills recovery. Composite foams at varying filler content in the range 35–45 wt% were investigated. The sorption kinetics and capacity of composite foams in different oils (e.g., kerosene, virgin naphtha, pump oil) were assessed. As a reference, water absorption capacity was also evaluated. Among all, the composite foam filled with 40 wt% bentonite (B‐40 batch) shows the lowest affinity with water and good absorption capacity with oils (mainly light oils) reaching an absorption capacity at saturation equal to 10.3 and 518.2 wt% in water and virgin naphtha, respectively. Furthermore, isothermal absorption curves were analyzed using three kinetic models: pseudo‐first order, pseudo‐second order, and Elovich models. The equilibrium isotherm fitting results were optimal using the pseudo‐second order model, indicating that chemisorption phenomena play a key role in the speed of the absorption phase for these PDMS‐based composite foams. Finally, a correlation was addressed between morphology, foam microstructure, absorption capacity, and kinetics.

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Section: Introductionmentioning

confidence: 99%