An Adsorbent for Efficient and Rapid Gold Recovery from Solution: Adsorption Properties and Mechanisms

Langmuir, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 14, 2025

Adsorption is an efficient and highly selective method for gold recovery. Introducing rich N/S organic groups to combine with metal-organic frameworks (MOFs) as adsorbents regarded a practical approach enhance Herein, MOF (zirconium isothiocyanatobenzenedicarboxylate MOF, UiO-66-NCS) was designed amidinothiourea (AT) form UiO-66-AT amidothiourea-benzenedicarboxylate MOF) rapid adsorption. The prepared delivers improved adsorption capacity (about 903.02 mg/g at 1000 mg·L-1 of the initial Au3+) impressive rate within minutes 10 min 200 Au3+). Meanwhile, it exhibits sustainable stability after 5 cycles retention 99.52% excellent selectivity 98.76% in actual wastewater. According advanced characterizations Density Functional Theory (DFT) simulation, mechanism might be elaborated electrostatic adsorption, chelating coordination, chemical reduction. modified active provide sites Au(III) reduction Au(0). maintains large high surface activity while realizing stable application multiple cycles, which good value.

Language: Английский

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An ionic liquid-modified PVC nanofiber facilitates gold recovery from wastewater by a light-enhancing effect

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: 505, P. 159419 - 159419

Published: Jan. 9, 2025

Language: Английский

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Efficient adsorption and reduction of Au(III) to gold particles using cost-effective chitosan functionalized cellulose nanofiber

Carbon Research, Journal Year: 2025, Volume and Issue: 4(1)

Published: Jan. 24, 2025

Abstract Precious metal demand was rising dramatically along with the growth of contemporary industry. However, discharge gold ions wastewater had caused environmental pollution and shortage resources. Herein, using dialdehyde cellulose nanofiber (DACNF) as a cross-linking agent to immobilize chitosan (CS) used recover Au(III) from wastewater. The physicochemical characterization as-prepared adsorbents performed by methods. To investigate adsorption performance DACNF-CS for Au(III), thorough investigation conducted into effects pH, temperature, period, starting concentration. outcomes demonstrated that process could be well described pseudo-second-order Langmuir models, maximum capacity reached approximately 65.5 mg/g. analysis conformed adsorbed an adsorption-reduction process. In order facilitate reduction Au(0), first on -NH 2 groups electrostatic attraction chelation, which supplied electron acceptor -OH groups. therefore good option recovering aqueous solutions because its high efficiency, ease production, friendliness. Graphical

Language: Английский

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Portable hydroxyl-functionalized coal gangue-based cordierite porous ceramics sheets for effective adsorption of fluorine-containing wastewater

RSC Advances, Journal Year: 2024, Volume and Issue: 14(21), P. 15155 - 15166

Published: Jan. 1, 2024

Portable hydroxyl-functionalized coal gangue-based cordierite porous ceramic sheets were prepared for treating fluorine-containing wastewater based on the composition characteristics of gangue solid waste (material-based directional design).

Language: Английский

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Quaternary ammonium functionalized silica gel for selective Au recovery from refractory Au concentrate leachate: Mechanisms and performance in batch and column operations

Journal of environmental chemical engineering, Journal Year: 2025, Volume and Issue: unknown, P. 116871 - 116871

Published: May 1, 2025

Language: Английский

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ZnCl₂ activated mesoporous carbon from rice straw: optimization of its synthetic process and its application as a highly efficient adsorbent for amoxicillin

Environmental Science Water Research & Technology, Journal Year: 2024, Volume and Issue: 10(6), P. 1389 - 1405

Published: Jan. 1, 2024

An optimized and efficient zinc chloride-based activation of rice straw yielded highly mesoporous carbons with an exceptional ability to adsorb the antibiotic amoxicillin. The maximum adsorption capacity was found be as high 1308 mg g −1 .

Language: Английский

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Effective elimination of Hg(II) from water bodies with acid-modified magnetic biomass spent coffee grounds: conditional optimization and application

Environmental Science and Pollution Research, Journal Year: 2024, Volume and Issue: 31(31), P. 44289 - 44307

Published: June 29, 2024

Language: Английский

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Contemporary Breakthroughs and Diverse Chemistry Innovations in Waterborne Polyurethane

Journal of Polymers and the Environment, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 24, 2024

Language: Английский

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Efficient elimination of Hg(ii) from water bodies with acid-modified magnetic biomass spent tea leaves: conditional optimization and application

New Journal of Chemistry, Journal Year: 2024, Volume and Issue: 48(16), P. 7413 - 7429

Published: Jan. 1, 2024

To effectively enhance the resource utilization of biomass waste, a acid-modified magnetic spent tea leaves (NiFe 2 O 4 /STLs) was prepared via pyrolysis and co-precipitation methods used to eliminate mercury (Hg( ii )) from water bodies.

Language: Английский

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Harmonizing sustainability and sensing: Exploring green synthesis approaches and sensing advancements in Au-based nanostructures

Inorganic Chemistry Communications, Journal Year: 2024, Volume and Issue: 169, P. 113130 - 113130

Published: Sept. 7, 2024

Language: Английский

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