Synthesis and characterization of ZSM-12 zeolite for uranium(VI) adsorption: isotherm, kinetic, and thermodynamic investigations DOI Creative Commons

Sihem Khemaissia,

Rachid Abaidia,

Fatima Houhoune

et al.

Comptes Rendus Chimie, Journal Year: 2024, Volume and Issue: 28(G1), P. 79 - 93

Published: Dec. 12, 2024

In this study, a porous adsorbent was synthesized hydrothermally from molar composition gel of 10Na2O:Al2O3:100SiO2:2000H2O:20TPABr. X-ray diffraction confirmed the presence ZSM-12 zeolite phase, and nitrogen adsorption analysis revealed Brunauer–Emmett–Teller specific surface area 343.7 m2/g for material. The then used recovery uranium(VI) aqueous solutions with initial uranium concentrations 10 150 mg/L. Operating parameters such as pH, contact time, solid/liquid ratio, temperature were systematically investigated. optimum conditions found to be consistent both concentrations, pH value 3, time 60 min, 20 °C. However, ratio varied 5 g/L mg/L concentration 8 concentration. Langmuir isotherm well matched by ZSM-12, its kinetics pseudo-second-order model. uranyl ions material is spontaneous, chemisorption physisorption processes occur simultaneously during adsorption. thermodynamic indicate that U(VI) on exothermic. negative ΔS° indicates system disorder randomness decrease proceeds liquid phase adsorbate components are immobilized Dans cette étude, un adsorbant poreux est synthétisé par voie hydrothermale à partir d'un de molaire suivante La DRX confirmé la présence et l'analyse BET révélé une spécifique m2/g. zéolithe utilisée dans récupération l'uranium(VI) aqueuses ayant des initiales Les paramètres opératoires tels que le temps contact, rapport solide/liquide température étaient systématiquement étudiés. optimales se sont révélées cohérentes pour les deux : min Cependant, l'étude du initiale L'étude cinétique montré excellente corrélation avec modèle pseudo-deuxième ordre. L'adsorption uranyle matériau spontanée, processus chimisorption ont lieu en même temps. thermodynamique l'adsorption l'U(VI) sur exothermique. valeur négative indique désordre caractère aléatoire système diminuent au fur mesure progresse composants l'adsorbat liquide immobilisés adsorbant.

Regulation of chain conformation and synergistic effect of auxiliary groups towards polyamidoxime for highly efficient uranium extraction from seawater DOI
Hao Peng, Xiaoyu Li, Lina Lv

et al.

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 159288 - 159288

Published: Jan. 1, 2025

Language: Английский

Citations

1
A novel two stages chemical activation of pinewood waste for removing organic micropollutants from water and wastewater DOI
Osamah J. Al-sareji, Ruqayah Ali Grmasha, Mónika Meiczinger

et al.

Chemosphere, Journal Year: 2024, Volume and Issue: 363, P. 142974 - 142974

Published: July 29, 2024

Language: Английский

Citations

4
Regulatory roles of extracellular polymeric substances in uranium reduction via extracellular electron transfer by Desulfovibrio vulgaris UR1 DOI

Guangming Xu,

Haotian Yang, Juncheng Han

et al.

Environmental Research, Journal Year: 2024, Volume and Issue: 262, P. 119862 - 119862

Published: Aug. 28, 2024

Language: Английский

Citations

4
Research progress on remediation of petroleum contaminated soil by persulfate: existing technologies, degradation pathway and future direction DOI
Jinlan Xu, Huiwen Guan, Chuanyu Liu

et al.

Journal of environmental chemical engineering, Journal Year: 2025, Volume and Issue: unknown, P. 116540 - 116540

Published: April 1, 2025

Language: Английский

Citations

0
Bibliometric Analysis of Aerosol-Radiation Research from 1999 to 2023 DOI Creative Commons
Shuai Wang, Bingqi Yi

Atmosphere, Journal Year: 2024, Volume and Issue: 15(10), P. 1189 - 1189

Published: Oct. 4, 2024

Aerosol and aerosol-cloud radiation interactions significantly influence Earth’s radiative balance, hydrological cycle, global monsoons, atmospheric circulation, climate, attracting substantial scientific attention. This study employs bibliometric quantitative trend analyses to evaluate the development, knowledge structure, research trends in aerosol from 1999 2023 using Web of Science Core Collection data. Results reveal a consistent increase publications citations, indicating sustained attention this field. The USA China are identified as most prolific countries, with significant contributions institutions like National Aeronautics Space Administration Chinese Academy Sciences. However, while shows recent decline growth, has demonstrated upward contributions. Productive journals include Atmospheric Chemistry Physics Journal Geophysical Research-Atmospheres, authors such Babu S. Suresh Li Zhanqing. A co-occurrence analysis keywords identifies topics focused on optical properties, types, interactions, interactions. Emerging emphasize advanced methodologies remote sensing, model simulation, artificial intelligence, growing regions Southern Ocean Arctic. comprehensive provides valuable insights for researchers, identifying gaps guiding future directions which crucial understanding their climatic impacts.

Language: Английский

Citations

1
Investigating the environmental dynamics of emerging pollutants in response to global climate change: Insights from bibliometrics-based visualization analysis DOI
Bogui Pan,

Hong Tian,

Boyou Pan

et al.

The Science of The Total Environment, Journal Year: 2024, Volume and Issue: 957, P. 177758 - 177758

Published: Nov. 30, 2024

Language: Английский

Citations

1
Synthesis and characterization of ZSM-12 zeolite for uranium(VI) adsorption: isotherm, kinetic, and thermodynamic investigations DOI Creative Commons

Sihem Khemaissia,

Rachid Abaidia,

Fatima Houhoune

et al.

Comptes Rendus Chimie, Journal Year: 2024, Volume and Issue: 28(G1), P. 79 - 93

Published: Dec. 12, 2024

In this study, a porous adsorbent was synthesized hydrothermally from molar composition gel of 10Na2O:Al2O3:100SiO2:2000H2O:20TPABr. X-ray diffraction confirmed the presence ZSM-12 zeolite phase, and nitrogen adsorption analysis revealed Brunauer–Emmett–Teller specific surface area 343.7 m2/g for material. The then used recovery uranium(VI) aqueous solutions with initial uranium concentrations 10 150 mg/L. Operating parameters such as pH, contact time, solid/liquid ratio, temperature were systematically investigated. optimum conditions found to be consistent both concentrations, pH value 3, time 60 min, 20 °C. However, ratio varied 5 g/L mg/L concentration 8 concentration. Langmuir isotherm well matched by ZSM-12, its kinetics pseudo-second-order model. uranyl ions material is spontaneous, chemisorption physisorption processes occur simultaneously during adsorption. thermodynamic indicate that U(VI) on exothermic. negative ΔS° indicates system disorder randomness decrease proceeds liquid phase adsorbate components are immobilized Dans cette étude, un adsorbant poreux est synthétisé par voie hydrothermale à partir d'un de molaire suivante La DRX confirmé la présence et l'analyse BET révélé une spécifique m2/g. zéolithe utilisée dans récupération l'uranium(VI) aqueuses ayant des initiales Les paramètres opératoires tels que le temps contact, rapport solide/liquide température étaient systématiquement étudiés. optimales se sont révélées cohérentes pour les deux : min Cependant, l'étude du initiale L'étude cinétique montré excellente corrélation avec modèle pseudo-deuxième ordre. L'adsorption uranyle matériau spontanée, processus chimisorption ont lieu en même temps. thermodynamique l'adsorption l'U(VI) sur exothermique. valeur négative indique désordre caractère aléatoire système diminuent au fur mesure progresse composants l'adsorbat liquide immobilisés adsorbant.

Citations

0