Potentiality of uranium recovery from G.Gattar leach liquor using Duolite ES-467 chelating resin: Kinetic, thermodynamic and isotherm features

Zidan, Ibrahim H.; Cheira, Mohamed F.; Bakry, Ahmed; Atia, Bahig M.

doi:10.1080/03067319.2020.1748613

Cited by 31 publications

(14 citation statements)

References 62 publications

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“…Likewise, compared to common resin, the bifunctional chelating resin bearing phosphonic and sulfonic groups showed better removal of fluoride (Li et al 2020). Among all examples, bifunctional polymer-supported aminophosphonic acid (Zidan et al 2020), carboxylic-amine-phosphonic acid (Wang et al 2020a), diphosphonic (Fila et al 2019), polyamine in the presence of HDPE (Zhao et al 2019a) proved to be of interest for the removal of metal cations.…”

Section: Polymeric Materials Bearing Phosphonic Moietiesmentioning

confidence: 94%

Functionalization of polymers and nanomaterials for water treatment, food packaging, textile and biomedical applications: a review

et al. 2020

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The inert nature of most commercial polymers and nanomaterials results in limitations of applications in various industrial fields. This can be solved by surface modifications to improve physicochemical and biological properties, such as adhesion, printability, wetting and biocompatibility. Polymer functionalization allows to graft specific moieties and conjugate molecules that improve material performances. In the last decades, several approaches have been designed in the industry and academia to graft functional groups on surfaces. Here, we review surface decoration of polymers and nanomaterials, with focus on major industrial applications in the medical field, textile industry, water treatment and food packaging. We discuss the advantages and challenges of polymer functionalization. More knowledge is needed on the biology behind cell–polymer interactions, nanosafety and manufacturing at the industrial scale.

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Section: Polymeric Materials Bearing Phosphonic Moietiesmentioning

confidence: 94%

Functionalization of polymers and nanomaterials for water treatment, food packaging, textile and biomedical applications: a review

et al. 2020

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“…Sorption properties have retained great attention more specifically for the treatment of dilute solutions using mineral surfaces [9][10][11], silica [12], functionalized silica [13], biopolymer-silica composite [14], and metal-organic framework [15,16]. Sorption processes using ion-exchange [17][18][19][20][21][22][23][24][25] and chelating resins [26][27][28] have been also widely investigated for the treatment of uranium-bearing solutions.…”

Section: Synthesis Of Magnetic Chitosan/gma Compositementioning

confidence: 99%

“…Uranium having a great affinity for amine [29][30][31], phosphonic [26,32,33] and amidoxime groups [34][35][36], many resins have been designed by the grafting of these reactive groups on synthetic resins [37] but also on biopolymer-based supports [38,39]. In the current work, magnetic/chitosan nanoparticles decorated with glycidylmethacrylate (GMA) have been functionalized with amine groups (diethylenetriamine, DETA) to prepare GMA-magnetic/chitosan-amine sorbent (R-Amine).…”

Section: Synthesis Of Magnetic Chitosan/gma Compositementioning

confidence: 99%

Effect of agitation mode (mechanical, ultrasound and microwave) on uranium sorption using amine- and dithizone-functionalized magnetic chitosan hybrid materials

Elwakeel

Hamza

Guibal

2021

Chemical Engineering Journal

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Magnetic chitosan nanoparticles, activated by glycidyl methacrylate, can be functionalized by grafting dieth-ylenetriamine (DETA) and dithizone for improving U(VI) sorption at pH around 5. The physicochemical prop-erties of the materials have been characterized by a wide variety of analytical techniques. Uranyl sorption increases with the pH (progressive deprotonation of amine and sulfur groups). Uptake kinetics are controlled by the agitation mode: the equilibrium time is reduced while using ultrasonic treatment (especially at highest frequency: 80 kHz): the cavitation effect improves the accessibility to internal reactive groups (sorption capacity is increased). The diffusivity coefficient is increased by 4-5 times. In the case of microwave, the sorption capacity is significantly reduced (especially for R-Dithizone, down to 0.8 mmol U g − 1 ) because of temperature increase, which limits the sorption (exothermic mechanism). Mass transfer is tremendously enhanced: equilibrium time is less than 60 s (30 min for ultrasonic treatment and 120 min with mechanical agitation). Sorption capacity at monolayer saturation (Langmuir) decreases with increasing the temperature from 2.20 to 1.74 mmol U g − 1 for R-Amine (from 1.77 to 1.22 mmol U g − 1 for R-Dithizone). The sorption enthalpy is close to − 19.7 kJ mol − 1 for R-Amine (with positive entropy change, ΔS • ) and − 34.2 kJ mol − 1 for R-Dithizone (negative ΔS • ). Metal desorption is highly efficient using 0.3 M Na 2 CO 3 /0.1 M H 2 O 2 solution. Metal desorption is instantaneous (less than 1 min) and complete when using microwave treatment. The ultrasonic treatment allows improving desorption efficiency and decreasing the concentration of the eluent compared with mechanical agitation. The process is successfully applied for uranyl separation from the leachates of marine sediments, especially in the presence of Complexon III (masking agent).

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“…The high adsorption capability of DS bio-adsorbent may be due to the following: (i) high bio-adsorbent surface area, (ii) porosity, (iii) numerous active sites on the interior/exterior surface, (iv) rapid and easy Th(IV) diffusion along the bio-adsorbent pores, and (v) good distribution of modifier chelating agents on the bio-adsorbent's internal/external surface (Cheira, 2015). Langmuir and Freundlich isotherm models were used to estimate the theoretical adsorption capacity of DS bio-adsorbent and determine whether the interaction nature is chemical or physical (Cheira et al, 2017;Gomaa et al, 2017;Zidan et al, 2020):…”

Section: Thorium Adsorption Isothermmentioning

confidence: 99%

Date seed as an efficient, eco-friendly, and cost-effective bio-adsorbent for removal of thorium ions from acidic solutions

Sayed

Abdel-Mottaleb

Cheira

et al. 2020

Aswan University Journal of Environmental Studies

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Removal of thorium ions from acidic media using high effective bio-adsorbent is a very convenient viewpoint for the management of environmental pollutants. With this respect, this study is aimed to synthesize bio-adsorbent derived from date palm seed (DS bio-adsorbent) for adsorption of Th(IV) from acidic media. The studied bio-adsorbent was characterized by FTIR, SEM, and XRD techniques. The effective experimental parameters on the adsorption performance such as pH, bio-adsorbent dose, contact time, solution temperature, thorium initial concentration, and interfering ions were investigated. Furthermore, adsorption isotherm and kinetic studies were explored to describe the mechanism of thorium adsorption using the proposed bio-adsorbent. The Langmuir model result showed that the DS removal adsorption capacity was 43 mg.g-1 at optimized batch conditions. The kinetic findings indicated that the adsorption mechanism was in an agreement with the pseudo-second-order model. Additionally, the regeneration of the spent bio-adsorbent was studied using 0.3 mol.L-1 HNO3 as an eluent agent. This research suggested that the date palm seed bio-adsorbent could be evaluated as a beneficial adsorbent for the adsorption of thorium from aquatic and acidic media due to its selectivity and capacity.

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Potentiality of uranium recovery from G.Gattar leach liquor using Duolite ES-467 chelating resin: Kinetic, thermodynamic and isotherm features

Cited by 31 publications

References 62 publications

Functionalization of polymers and nanomaterials for water treatment, food packaging, textile and biomedical applications: a review

Functionalization of polymers and nanomaterials for water treatment, food packaging, textile and biomedical applications: a review

Effect of agitation mode (mechanical, ultrasound and microwave) on uranium sorption using amine- and dithizone-functionalized magnetic chitosan hybrid materials

Date seed as an efficient, eco-friendly, and cost-effective bio-adsorbent for removal of thorium ions from acidic solutions

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