Kinetics of scandium ion sorption onto oxidized carbon nanotubes

Pęgier, Mateusz; Kilian, Krzysztof; Pyrzyńska, Krystyna

doi:10.1007/s00706-019-02472-w

Cited by 6 publications

(2 citation statements)

References 21 publications

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“…At present, there are many modi ed substances that can improve the adsorption effect of adsorbents, such as graphene oxide (Ashour et al 2017;Li et al 2021), carbon nanotubes (Pegier et al 2019;Alguacil et al 2020) and so on, but these materials are generally expensive, and the prepared adsorbents are not cost-effective. Therefore, our current goal is to modify BC aerogel with low-cost raw materials to reduce the preparation cost while maintaining the high adsorption capacity of Dy(III) (Liao et al 2018).…”

Section: Introductionmentioning

confidence: 99%

A green attapulgite bacterial cellulose imprinted aerogel for selective adsorption and recovery of Dy(III)

Zheng

Sun

et al. 2022

Cellulose

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Recycling dysprosium from the environment can not only alleviate the industrial crisis, but also reduce the ecological pollution caused by dysprosium ions. At present, the price of the materials used to adsorb rare earth ions is generally high, which is not conducive to the wide application of the adsorbents in the rare earth industry. In this paper, based on the 3D network structure of carboxylated bacterial cellulose, some cheap materials such as attapulgite and gelatin were used to replace the high-priced raw materials, and a low-cost and green I-APT-GT-OBC aerogel was prepared. To test the adsorption properties of the composite aerogel, we carried out a series of adsorption experiments. The results showed that the saturated adsorption capacity of dysprosium ions by the imprinted aerogel was 48.762 mg g − 1 when the pH value was 5.0, and the adsorption process was spontaneous, endothermic and entropy increasing. In the competitive adsorption experiment, the K d value of I-APT-GT-OBC for dysprosium ions was 4084.40 mL g − 1 , which was much higher than that of other aerogels, showing excellent selective adsorption. In conclusion, I-APT-GT-OBC is expected to be a low-cost adsorbent that can e ciently adsorb dysprosium ions in water.

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Section: Introductionmentioning

confidence: 99%

A green attapulgite bacterial cellulose imprinted aerogel for selective adsorption and recovery of Dy(III)

Zheng

Sun

et al. 2022

Cellulose

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“…However, this remains a significant challenge as an explicit dependence of ion–pore interaction on the specific pore size and ion type has not been included in conventional continuum models . For example, in the case of passive adsorption in carbon-based materials in the absence of an electric field, − the kinetics has been described using simple kinetic or Langmuir-type equilibria models with empirical parameters that do not have a direct physical interpretation.…”

Section: Introductionmentioning

confidence: 99%

Unraveling the Ion Adsorption Kinetics in Microporous Carbon Electrodes: A Multiscale Quantum-Continuum Simulation and Experimental Approach

Oyarzun

Zhan

Hawks

et al. 2021

ACS Appl. Mater. Interfaces

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Understanding sorption in porous carbon electrodes is crucial to many environmental and energy technologies, such as capacitive deionization (CDI), supercapacitor energy storage, and activated carbon filters. In each of these examples, a practical model that can describe ion electrosorption kinetics is highly desirable for accelerating material design. Here, we proposed a multiscale model to study the ion electrosorption kinetics in porous carbon electrodes by combining quantum mechanical simulations with continuum approaches. Our model integrates the Butler−Volmer (BV) equation for sorption kinetics and a continuously stirred tank reactor (CSTR) formulation with atomistic calculations of ion hydration and ion−pore interactions based on density functional theory (DFT). We validated our model experimentally by using ion mixtures in a flow-through electrode CDI device and developed an in-line UV absorption system to provide unprecedented resolution of individual ions in the separation process. We showed that the multiscale model captures unexpected experimental phenomena that cannot be explained by the traditional ion electrosorption theory. The proposed multiscale framework provides a viable approach for modeling separation processes in systems where pore sizes and ion hydration effects strongly influence the sorption kinetics, which can be leveraged to explore possible strategies for improving carbon-based and, more broadly, pore-based technologies.

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Novel ball-milled biochar-vermiculite nanocomposites effectively adsorb aqueous As(Ⅴ)

Wan

Chen

et al. 2020

Chemosphere

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Kinetics of scandium ion sorption onto oxidized carbon nanotubes

Cited by 6 publications

References 21 publications

A green attapulgite bacterial cellulose imprinted aerogel for selective adsorption and recovery of Dy(III)

A green attapulgite bacterial cellulose imprinted aerogel for selective adsorption and recovery of Dy(III)

Unraveling the Ion Adsorption Kinetics in Microporous Carbon Electrodes: A Multiscale Quantum-Continuum Simulation and Experimental Approach

Novel ball-milled biochar-vermiculite nanocomposites effectively adsorb aqueous As(Ⅴ)

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