Article
Engineering, Environmental
Xin Zhong, Yuxin Liu, Tao Hou, Yuling Zhu, Baowei Hu
Summary: In this study, hierarchical hollow-spherical bismuth tungstate (Bi2WO6) was prepared and characterized for its adsorption and photocatalytic reduction performance towards U(VI). The results showed that Bi2WO6 efficiently removed U(VI) under visible-light irradiation, making it a promising candidate for radioactive wastewater treatment.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Environmental Sciences
Dedong Wu, Zixuan Ma, Lijie Liu, Bing Zhao, Hairui Hou, Xiangxue Wang, Shujun Yu
Summary: By conducting batch experiments and spectral analyses, it was found that the addition of humic acid (HA) could enhance the removal capacity of ZIF-8 towards U(VI), through factors such as increasing the electronegativity of ZIF-8, changing its surface charge, and affecting the chemical interactions between U(VI) and ZIF-8. This has significant implications for the practical application of ZIF-8 in environmental settings.
ENVIRONMENTAL POLLUTION
(2023)
Article
Polymer Science
Bahig M. Atia, Ahmed K. Sakr, Mohamed A. Gado, Hassan S. El-Gendy, Nagwa M. Abdelazeem, Enass M. El-Sheikh, Mohamed Y. Hanfi, M. Sayyed, Jamelah S. Al-Otaibi, Mohamed F. Cheira
Summary: A new synthetic chelating ligand HTIP was successfully prepared and its specifications were determined using various analytical techniques. The study showed that HTIP has a good retention capacity for U(VI) ions and identified the optimum experimental conditions. Furthermore, thermodynamic and kinetic studies indicated the advantages of HTIP in U(VI) extraction.
Article
Biochemistry & Molecular Biology
Fenglei Liu, Jinru Hu, Baowei Hu
Summary: A magnetic MXenes based composite (Fe3O4@Ti3C2-NH2-PT) was developed by loading Fe3O4 nanoparticles into persimmon tannin-functionalized Ti3C2-NH2. Batch experiments showed that the composite exhibited high removal efficiency for U(VI) and Cr(VI) under various conditions. The adsorption process followed the Langmuir isotherm and Pseudo-second-order kinetics models, suggesting different elimination mechanisms for U(VI) and Cr(VI).
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2022)
Article
Engineering, Environmental
Kexiao Sang, Douchao Mei, Yudan Wang, Lijia Liu, Huan Li, Guoxing Yang, Fuqiu Ma, Chunhong Zhang, Hongxing Dong
Summary: In this study, zeolitic imidazole frameworks (ZIF-90) were modified to manufacture amidoxime-appended ZIF-90 (ZIF-90-A), a material with antibacterial properties. ZIF-90-A exhibited a high uranium-uptake capacity and excellent antimicrobial properties. It also showed good selectivity for UO22+ and maintained its uranium-uptake capacity after multiple adsorption-desorption cycles.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Chemistry, Physical
Fenglei Liu, Miao Xiang, Anjie Wang, Chao Wang, Baowei Hu
Summary: In this study, a composite material (nZVI@SBA-15-PDA/PEI) loaded with nanoscale zero-valent iron (nZVI) was developed for the removal of Cr(VI) and U(VI). The maximum removal capacities were found to be 44.05 mg/g and 57.78 mg/g for Cr(VI) and U(VI) respectively. The elimination mechanism involved a two-step interaction process where the pollutants were first attached onto the composite materials and then reduced to U(IV) and Cr(III) by nZVI.
APPLIED SURFACE SCIENCE
(2021)
Article
Environmental Sciences
Fenglei Liu, Shan Hua, Chao Wang, Baowei Hu
Summary: This study utilized waste paper as a cross-linking agent to immobilize persimmon tannin for the removal of U(VI) and Cr(VI), achieving competitive maximum removal capacities. The adsorption process was influenced by various factors and well fitted by Langmuir and Pseudo-second-order equations. Adsorption mechanisms were identified as surface complexation for U(VI) and redox reaction for Cr(VI), providing a high-efficiency and low-cost adsorbent for radioactive nuclide and heavy metal treatment.
Article
Environmental Sciences
Huimin Zhang, Steve Larson, John Ballard, Jing Nie, Qiqi Zhang, Joseph A. Kazery, Shaloam Dasari, Nihar Pradhan, Qilin Dai, Olanrewaju M. Olafuyi, Xianchun Zhu, Youhua Ma, Fengxiang X. Han
Summary: This study investigated the modification of clay minerals by exopolysaccharides (EPS) and its impact on uranium adsorption. The results showed that EPS could enhance the adsorption capacity of montmorillonite and kaolinite for U(VI). The adsorption capacity was affected by pH, sulfate, and phosphate.
JOURNAL OF SOILS AND SEDIMENTS
(2023)
Article
Engineering, Chemical
K. Kishore Ramanan, S. Rohith, N. Santosh Srinivas, Dinesh Kumar Subbiah, John Bosco Balaguru Rayappan, Gautham B. Jegadeesan
Summary: NiOx nanoparticles coated cotton cloth exhibited excellent U6+ immobilization with favorable adsorption capacity and monolayer adsorption property, showing maximum immobilization at pH 6. The sorption kinetics was best described by pseudo-second order kinetics, indicating a chemisorption-based process.
ADVANCED POWDER TECHNOLOGY
(2021)
Article
Environmental Sciences
Xinxin Chen, Siheng Cai, Nan Zhang, Jieqiu Yang, Tangjian Peng, Fei Yang
Summary: Heavy metal pollution poses a serious threat to the environment and human health. Biosorption, a cost-effective and environmentally friendly method, has gained worldwide attention. This study investigates the biosorption of U(VI) onto live and dead cells of a Sphingopyxis strain YF1. The results show that both live and dead cells have good adsorption performance, with the maximal adsorption capacities of U(VI) being 140.7 mg g(-1) and 205.7 mg g(-1), respectively. The mechanisms of U(VI) adsorption by Sphingopyxis sp. YF1 were also revealed.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Chemistry, Applied
Zhenhua Dang, Mingming Jia, Jun Liao, Yong Zhang, Wenkun Zhu
Summary: Al2O3 aerogels with uniform porous morphology showed good adsorption properties for U(VI) species, adhering to the Langmuir adsorption model with high adsorption capacities and efficiency. The material demonstrated fast and sustainable adsorption of U(VI) in water treatment applications.
MICROPOROUS AND MESOPOROUS MATERIALS
(2021)
Article
Environmental Sciences
Yuling Lin, Yuhui Liu, Shuang Zhang, Zijie Xie, Yingcai Wang, Yan Liu, Ying Dai, Youquan Wang, Zhibin Zhang, Yunhai Liu, Sheng Deng
Summary: This study developed a high temperature electrochemical method to prepare EuVO4 and investigated its adsorption performance for U(VI) through static batch experiments. The results showed that EuVO4 had a high adsorption capacity for U(VI) and exhibited good selective adsorption properties in a multi-ion system, along with good renewable performance.
Article
Chemistry, Inorganic & Nuclear
Yanbing Sun, Yuanyuan Wei, Jiaying Pei, Huarui Nan, Youqun Wang, Xiaohong Cao, Yunhai Liu
Summary: By phosphorylation modification, ZrO2@PCs-PO4 with high monolayer adsorption capacity for U(VI) ions was successfully prepared, showing potential for efficient removal of U(VI) from contaminated water. The surface morphology and structure of the material were characterized, and adsorption mechanism was explored through adsorption isotherms and kinetics studies.
JOURNAL OF SOLID STATE CHEMISTRY
(2021)
Article
Engineering, Environmental
Zequan Liu, Tao Ou, Minhua Su, Hairong Peng, Gang Song, Lingjun Kong, Diyun Chen
Summary: The study emphasizes the critical role of solution pH in the retention of U(VI) by alpha-/gamma-alumina, with gamma-Al2O3 showing higher removal efficiency. Phosphate ions significantly promote U(VI) adsorption, while humic acid has different effects on U(VI) removal by alumina under different conditions.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Engineering, Environmental
Mohamed E. Mahmoud, Rana M. Tharwat, Amir M. Abdelfattah, Saad S. M. Hassan
Summary: In this study, a novel nanohybrid composite, Zn-BTC@GQDs-rGO@Alg hydrogel, was developed by combining zinc-based MOF (Zn-BTC) with carbon-based materials (graphene quantum dots and reduced graphene oxide) and crosslinking them with alginate hydrogel. The composite exhibited strong adsorptive capture and uptake of U(VI) ions due to the incorporated oxygen functionalities. The composite showed excellent effectiveness and high stability in U(VI) uptake, outperforming other adsorbents, and successfully removed U(VI) from seawater, tap water, and wastewater with high uptake percentages.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
