Adsorption of U(VI) ions from aqueous solutions by activated carbon prepared from Antep pistachio (<i>Pistacia vera</i> L.) shells

Donat, Ramazan; Erden, Kadriye Esen

doi:10.1515/ract-2016-2637

Cited by 19 publications

(4 citation statements)

References 29 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…When Δ H ° < 20 kJ mol –1 , adsorption follows physisorption, while as the Δ H ° > 20 kJ mol –1 , adsorption follows the chemisorption mechanism. The low Δ H ° value of pristine MWNCTs was 11.25 kJ mol –1 , indicating that the adsorption of U(VI) followed physisorption, and a similar result of 11.33 kJ mol –1 was obtained for U(VI) onto Antep pistachio shell-derived activated carbon . In contrast, the Δ H ° values of FMTnF-SO 3 H and FMTnF-COOH were 78.2931 and 78.9465 kJ mol –1 , respectively.…”

Section: Resultsmentioning

confidence: 62%

“…The low ΔH°value of pristine MWNCTs was 11.25 kJ mol −1 , indicating that the adsorption of U(VI) followed physisorption, and a similar result of 11.33 kJ mol −1 was obtained for U(VI) onto Antep pistachio shell-derived activated carbon. 58 In contrast, the ΔH°values of FMTnF-SO 3 H and FMTnF-COOH were 78.2931 and 78.9465 kJ mol −1 , respectively. It was suggested that U(VI) adsorption might involve the physicochemical interaction, that is, chelation or ion exchange via the functional groups of FMTnF-SO 3 H and FMTnF-COOH.…”

Section: ■ Results and Discussionmentioning

confidence: 90%

See 1 more Smart Citation

Preparation of Novel Bifunctional Magnetic Tubular Nanofibers and Their Application in Efficient and Irreversible Uranium Trap from Aqueous Solution

Ahmad

Cui

et al. 2020

ACS Sustainable Chem. Eng.

View full text Add to dashboard Cite

A low-cost and efficient material is highly attractive for the removal of radioactive metal ions from aqueous solutions. However, it is highly required and still challenging. In this work, novel bifunctional magnetic tubular nanofibers (FMTnF) are prepared from α,α′-dichloro-p-xylene via self-polymerization by the two-oil-solvent method. The polymerized material is followed by carbonization. The carbonized material experienced bifunctionalization, first, grafting of sulphonic (−SO 3 H) and carboxylic (−COOH) groups and second, loading of Fe 3 O 4 for the preparation of sulphonic magnetic tubular nanofibers (FMTnF-SO 3 H) and carboxyl magnetic tubular nanofibers (FMTnF-COOH). The average diameter of FMTnF-SO 3 H and FMTnF-COOH is about 160 nm, and the saturation magnetization values are 21.61 and 19.44 emu g −1 , respectively. The adsorption performances of these two adsorbents are studied and compared for the removal of U(VI) from aqueous solution. Fourier transform infrared and X-ray photoelectron spectroscopy characterizations combined with isothermal studies confirmed that the interaction of U(VI) with active sites of FMTnF-SO 3 H and FMTnF-COOH is usually through coordination complexation. The maximum adsorption capacities of FMTnF-SO 3 H and FMTnF-COOH are 955.6993 and 980.3921 mg g −1 , respectively, at pH = 8. Moreover, the high adsorption efficiency can reach 85 ± 0.5% at low concentration (3 μg L −1 ). Excellent regeneration and reusability of FMTnF-SO 3 H and FMTnF-COOH offered long-term usage to decrease cost for U(VI) adsorption from seawater/wastewater treatment.

show abstract

Section: Resultsmentioning

confidence: 62%

Section: ■ Results and Discussionmentioning

confidence: 90%

Preparation of Novel Bifunctional Magnetic Tubular Nanofibers and Their Application in Efficient and Irreversible Uranium Trap from Aqueous Solution

Ahmad

Cui

et al. 2020

ACS Sustainable Chem. Eng.

View full text Add to dashboard Cite

show abstract

“…18221) as Toprak et al (2012) found in their research employing surrogate wastewater samples. Donat and Erden (2016) used the hull of Antep pistachios to prepare and physicochemically activate carbon at 700 • C in a carbon dioxide-rich atmosphere. The activated carbons formed were found to effectively adsorb physically and remove uranium (VI) from surrogate aqueous solutions.…”

Section: Moussavi and Khosravi 2011mentioning

confidence: 99%

“…A few studies dealt with phenol removal. One work (Donat and Erden, 2016) focused on the (successful) removal of uranium (VI). Nejadshafiee and Reza Islami (2020) treated real waste.…”

Section: Pecan Nutshellmentioning

confidence: 99%

Nut Shells as Adsorbents of Pollutants: Research and Perspectives

Papadaki¹,

Mendoza-Castillo²,

Reynel-Ávila³

et al. 2021

Front. Chem. Eng.

View full text Add to dashboard Cite

Shells, kernels, and other wastes have been investigated by researchers as potential adsorbents for a number of pollutants like methylene blue (MB), Remazol Rot RB, acid blue 80, acid blue 324, or as raw materials for the production of activated carbons and biochars to serve the same objective. Activated carbons formed by such wastes have been found to remove different heavy metals like uranium, arsenic, and cadmium while their biochars removed others like lead and copper. Furthermore, the production of these adsorbents can be combined with additional ways of valorization of this type of waste like bio-oil or bio-gas generation or even added-value materials extraction. In this work, conducted research on the ability of pistachio, pecan, cashew nut, and castor seed shells to selectively adsorb and thus remove pollutants from synthetic wastewaters is being shown. This type of research needs to be expanded in order to incorporate competitive adsorption, adsorbents regeneration, and recovery of adsorbates and to evaluate their performance with real wastewaters, before they find their way to large scale applications for the removal of the respective compounds from natural waters and wastewaters. An appropriate life cycle assessment is also necessary for the evaluation of the environmental benefits arising from their use.

show abstract

Uranium capture from aqueous solution using palm-waste based activated carbon: sorption kinetics and equilibrium

Youssef,

El-Maadawy,

Masoud

et al. 2024

Environ Monit Assess

View full text Add to dashboard Cite

Carbonaceous materials produced from agricultural waste (palm kernel shell) by pyrolysis can be a proper type of low-cost adsorbent for wide uses in radioactive effluent treatment. In this context, the as-produced bio-char (labeled as PBC) and its sub-driven sulfuric acid and zinc oxide activated carbons (labeled as PBC-SA, and PBC-Zn respectively) were employed as adsorbents for uranium sorption from aqueous solution. Various analytical techniques, including SEM (Scanning Electron Microscopy), EXD (X-ray Diffraction), BET (Brunauer–Emmett–Teller), FTIR (Fourier Transform Infrared Spectroscopy), and Zeta potential, provide insights into the material characteristics. Kinetic and isotherm investigations illuminated that the sorption process using the three sorbents is nicely fitted with Pseudo-second-order-kinetic and Langmuir isotherm models. The picked data display that the equilibrium time was 60 min, and the maximum sorption capacity was 9.89, 16.8, and 21.9 mg/g for PBC, PBC-SA, and PBC-Zn respectively, which reflects the highest affinity for zinc oxide, activated bio-char, among the three adsorbents, for uranium taking out from radioactive wastewater. Sorption thermodynamics declare that the sorption of U(VI) is an exothermic, spontaneous, and feasible process. About 92% of the uranium-loaded PBC-Zn sorbent was eluted using 1.0 M CH3COONa sodium ethanoate solution, and the sorbent demonstrated proper stability for 5 consecutive sorption/desorption cycles.

show abstract

Adsorption of U(VI) ions from aqueous solutions by activated carbon prepared from Antep pistachio (Pistacia vera L.) shells

Abstract: AbstractAntep pistachio (

Cited by 19 publications

References 29 publications

Preparation of Novel Bifunctional Magnetic Tubular Nanofibers and Their Application in Efficient and Irreversible Uranium Trap from Aqueous Solution

Preparation of Novel Bifunctional Magnetic Tubular Nanofibers and Their Application in Efficient and Irreversible Uranium Trap from Aqueous Solution

Nut Shells as Adsorbents of Pollutants: Research and Perspectives

Uranium capture from aqueous solution using palm-waste based activated carbon: sorption kinetics and equilibrium

Contact Info

Product

Resources

About