Article
Engineering, Environmental
Shuai Zhou, Yanxing Xie, Feiyu Zhu, Yuanyuan Gao, Yingjiu Liu, Zhenping Tang, Yi Duan
Summary: A novel composite material (PAO/GO/CS) was prepared to address the difficulty of separating GO from water due to its high hydrophobicity and dispersibility. This composite showed improved adsorption performance for U(VI) through cross-linking reaction between GO and chitosan.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Chemistry, Inorganic & Nuclear
Ziteng Gao, Shusen Chen, Haiyun Ding, Yan Song, Ziming Li, Haizhen Wang, Haotian Wu, He Li, Yantao Su
Summary: The amidoxime-based material has been shown to be effective in adsorbing uranium. In this study, a bifunctional modified PAN graphite felt (TETA-PAO/GF) was successfully synthesized using electmcatalysis technology. The TETA-PAO/GF demonstrated good uranium adsorption performance in seawater, indicating its potential application in uranium extraction.
INORGANIC CHEMISTRY COMMUNICATIONS
(2022)
Article
Engineering, Chemical
Yang Li, Tao Huang, Xiaolu Liu, Zhongshan Chen, Hui Yang, Xiangke Wang
Summary: With the rapid development of industry, large amounts of wastewater containing metal ions are generated and released into natural ecosystems. Removing heavy metal ions from these ecosystems efficiently is a major challenge. This review summarizes and discusses the sorption-catalytic reduction-immobilization of U(VI) and Cr(VI) by porous frameworks materials such as MOFs, COFs, and g-C3N4. The interaction mechanisms were studied through macroscopic batch sorption/column experiments, microscopic spectroscopy characterization, and molecular-level computational simulation. The porous frameworks materials with tunable pore sizes, active sites, and functional groups have high sorption capacity for U(VI) and Cr(VI), and can immobilize or extract them from complex systems. Doping/co-doping with metals/nonmetals and incorporating other nanomaterials/metal oxides can enhance catalytic activity. The challenges for real applications are also discussed in this review.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Engineering, Multidisciplinary
Mohamed Ahmed Mahmoud
Summary: In this study, a polyphenol compound was used to chemically modify silica nanoparticles as a sorbent nanocomposite for U (VI) removal. The Pyrogallol silica nanocomposite (PSCN) showed a maximum sorption capacity of 58.45 mg/g under optimal conditions. The sorption process was found to be exothermic and in good agreement with pseudo-second-order kinetics and Langmuir isotherm adsorption model.
ALEXANDRIA ENGINEERING JOURNAL
(2021)
Article
Chemistry, Physical
Yanlin Shi, Ning Guo, Jingyi Wang, Yao Li, Dongfan Xian, Chunli Liu
Summary: This study investigates the interaction between uranium and calcite under different alkaline conditions and the presence of EDTA through batch sorption and coprecipitation experiments. Multiple spectroscopic methods and DFT calculation are used to analyze the experimental results. The presence of EDTA impedes the precipitation of uranium on calcite surface under hyperalkaline conditions, but enhances the removal of uranium from solution by calcite under weak alkaline conditions. DFT calculations support the theory that uranyl complexes prefer to sorb on the steps, vacancies, and/or etch pits created by EDTA on calcite surface.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2022)
Article
Engineering, Environmental
Jianhong Ma, Min Zhang, Hui Zhang, Yongdong Wang, Feng Li, Nan Hu, Zhongran Dai, Yang Ding, Dexin Ding
Summary: In this study, hydrogel material HLSs/PAA gel was synthesized for the first time using humic-like substances (HLSs) extracted from spent coffee grounds (SCGs) and poly acrylic acid (PAA). The gel exhibited excellent U(VI) removal efficiency, stability, and anti-interference performance in an acidic environment.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Mohamed Ahmed Mahmoud
Summary: In this study, a nanocomposite of Fe3O4@SiO2 was synthesized and coated with 5,7-dihydroxy-4-methylcoumarin for uranium uptake in a batch system. The prepared DHMC-M-SNC exhibited a high sorption capacity for U (VI) at low temperature and showed good fitting with Langmuir and pseudo-second-order models. The recycling of DHMC-M-SNC demonstrated potential for up to 8 cycles, indicating its effectiveness as a sorbent for uranium sorption from the liquid phase.
JOURNAL OF SAUDI CHEMICAL SOCIETY
(2021)
Article
Chemistry, Inorganic & Nuclear
Yun Zhou, Huai-Xin Hao, Tian-Hao Dong, Xu-Feng Ni, Yi-Chen Hu, Jia-Ju Ma, Jun-Qiang Yang, Ke-Liang Shi, Guo-Jian Duan, Tong-Huan Liu
Summary: With the rapid development of nuclear energy, the safe and efficient disposal of radioactive waste solution has become a pressing environmental concern. In this study, a new type of high-efficiency adsorbent material, PAO/Ti3C2Tx, was synthesized to recover uranium from nuclear waste solution. The material showed excellent capacity and selectivity for U(VI) adsorption, as well as good stability after multiple adsorption/desorption cycles.
Article
Environmental Sciences
Xiaoyu Yin, Peng Wu, Shilong Shi, Yufan Zhao, Honghui Li, Feize Li, Jiali Liao, Ning Liu, Yuanyou Yang, Tu Lan
Summary: This study systematically investigated the sorption behavior of U(VI) on Tamusu clay sampled from a selected HLW disposal site in Inner Mongolia, China. The results showed that the sorption was pH-dependent, heterogeneous, spontaneous, and endothermic, and could be described by Freundlich isothermal and pseudo-second-order kinetic models. The presence of humic acid or fulvic acid significantly inhibited U(VI) sorption due to electrostatic repulsion and the aggregation of HA/FA wrapping U(VI) species in solution. The FTIR and XPS spectra confirmed the involvement of HCO3 groups on clay surfaces and -OH groups in HA/FA in U(VI) sorption. These findings contribute to the understanding of U(VI) migration in geological media.
JOURNAL OF ENVIRONMENTAL RADIOACTIVITY
(2023)
Article
Chemistry, Physical
Qi Zhang, Yangyang Wang, Zheng Wang, Zhijie Zhang, Xiaodong Wang, Zhenglong Yang
Summary: The study successfully synthesized the A-BC-NZVI composite and achieved certain results in removing heavy metal uranium from sewage water. The experimental results showed that A-BC-NZVI has significant adsorption and reduction effects on U(VI).
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Environmental Sciences
Rongyue Geng, Longmiao Yuan, Leiping Shi, Shirong Qiang, Yuqiang Li, Jianjun Liang, Ping Li, Guodong Zheng, Qiaohui Fan
Summary: The regulation effect of Aspergillus niger on the sorption behavior of U(VI) on kaolinite and illite was studied, showing that only inner-sphere complexes were present on the biocomposites. Microspectroscopy tests revealed coordination of U(VI) with phosphate, amide, and carboxyl groups on the biocomposites, while XPS found partial reduction of U(VI) to U(IV) in the presence of A. niger.
Article
Nuclear Science & Technology
Michael A. Bromley, Colin Boxall, Robin Taylor, Mark Sarsfield
Summary: An advanced PUREX process is being developed in the UK for recycling spent nuclear fuel. It aims to avoid pure separated plutonium and achieve a single cycle flowsheet with smaller plant footprint and reduced costs. The process involves the co-treatment of U and Pu and in situ co-conversion of mixed actinide metal nitrate solutions to oxide powders, suitable for the fabrication of MOx fuel.
PROGRESS IN NUCLEAR ENERGY
(2023)
Article
Nuclear Science & Technology
Mohamed Ahmed Mahmoud
Summary: This research demonstrates the efficient removal and recovery of U(IV) ions from aqueous solutions using eggplant leaves as sorbents. The leaves showed high adsorption capacity, low cost, good stability, and biodegradable properties, making them a promising adsorbent for environmental remediation.
PROGRESS IN NUCLEAR ENERGY
(2021)
Article
Green & Sustainable Science & Technology
Mohamed A. Hassanin, Sameh H. Negm, Mohamed A. Youssef, Ahmed K. Sakr, Hamed Mira, Tarek F. Mohammaden, Jamelah S. Al-Otaibi, Mohamed Y. Hanfi, M. Sayyed, Mohamed F. Cheira
Summary: The Hummer process is used to generate graphene oxide from carbon stocks' discharged Zn-C batteries waste, while SiO2 is produced from rice husks through the wet process. SiO2 reacted with graphene oxide to form silica/graphene oxide (SiO2/GO) as a sorbent material, which has good adsorption properties and can be easily regenerated.
Article
Materials Science, Multidisciplinary
Eleni Maragkou, Ioannis Pashalidis
Summary: The study found that the interaction of EDTA with C-S-H and its impact on U(VI) sorption varied at different EDTA concentrations. At higher concentrations, EDTA led to the deterioration of C-S-H and dissolution of Ca(OH)2, while at lower concentrations, EDTA was adsorbed into the solid phase forming complexes with higher adsorption capacity.
Article
Environmental Sciences
Xinghao Liu, Zhaoguang Yang, Ying Yang, Haipu Li
Summary: A novel carbon quantum dots sensitized 2D/2D carbon nitride nanosheets and bismuth tungstate composite was successfully prepared via hydrothermal method for photocatalytic degradation of norfloxacin, exhibiting significantly higher activity than individual CNs or BWO. The study showed that the composite material could enhance light harvesting, promote electron-hole separation, and the presence of inorganic ions may inhibit the degradation process. The main reactive species were identified as holes and superoxide radicals, with potential applications in wastewater treatment for antibiotic degradation.
Article
Environmental Sciences
Weiwei Xiao, Guobing Lin, Xiaoman He, Zhaoguang Yang, Lin Wang
Summary: The study on microbial communities in soil samples under phytoremediation of hyperaccumulation plants showed that the abundances of major microbial phyla exceeded 90% and were correlated with environmental factors such as pH and heavy metal concentrations. Soil pH was confirmed as the dominant factor in discriminating soil samples, indicating that microbial community abundances were influenced by various environmental factors.
Article
Environmental Sciences
Lingfei Ma, Fangyuan Peng, Qingqing Dong, Haipu Li, Zhaoguang Yang
Summary: The main biochemical components in Algogenic organic matter (AOM) were analyzed to investigate their contributions to the formation of disinfection byproducts (DBPs). The results showed that proteins were the key contributor to DBPs in AOM. Therefore, targeted removal of proteins before the chlorination process can effectively reduce DBPs in AOM.
Review
Environmental Sciences
Mengsi Cheng, Ying Fang, Haipu Li, Zhaoguang Yang
Summary: This review summarizes the classification and performance characteristics of adsorbents used for removing antimony pollutants from water in the past two decades, focusing on the adsorption behavior and mechanisms of various adsorbents for antimony.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Environmental Sciences
Xinghao Liu, Zhaoguang Yang, Wenxiu Zhu, Ying Yang, Haipu Li
Summary: The use of MnxCuyOz/γ-Fe2O3 catalyst in catalytic ozonation for chloramphenicol degradation shows significant effectiveness and can effectively control the toxicity of the treated solution. The catalyst is inhibited by HCO3-/CO32- and phosphates during the treatment process, but still exhibits excellent reusability and stability.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Article
Engineering, Chemical
Lingfei Ma, Fangyuan Peng, Yi Lu, Zhaoguang Yang, Bo Qiu, Haipu Li
Summary: This study investigated the effects of coagulation treatment on Microcystic aeruginosa AOM and the DBPs produced from it using multiple analysis methods, finding that aluminum salt coagulant can remove some AOM components but has limited precipitation ability, and the formation of DBPs is correlated with spectral parameters.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Engineering, Environmental
Ying Fang, Baoyu Qian, Ying Yang, Yang Song, Zhaoguang Yang, Haipu Li
Summary: The purification of high-arsenic groundwater is crucial for drinking water safety. This study developed magnetic Zn/Co bimetallic MOFs and coupled them with peroxymonosulfate (PMS) for efficient oxidation and adsorption of arsenic. The Zn/Co MOFs exhibited excellent performance in removing both As(III) and As(V) and showed outstanding reusability.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Environmental Sciences
Guobing Lin, Kai Wang, Xiaoman He, Zhaoguang Yang, Lin Wang
Summary: This study investigates the mobility and toxicity of heavy metal contamination in the environment, focusing on its bioavailability. Soil and sediment samples from an abandoned realgar mine in China were collected, and the bioavailable heavy metals were extracted using a three-step sequential extraction method. The results show that bioavailable heavy metals play a more important role in the richness and diversity of microbial community compared to total heavy metals and physicochemical parameters. pH is found to have a dominant contribution to the abundance of microbial community in soil samples. It is also observed that bioavailable Fe and Mn shape the taxonomic structure of microbial community due to their relatively high concentrations and high affinity to other heavy metal contamination in soils and sediments.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Chemistry, Applied
Yucheng Yuan, Jin Jiang, Zhaoguang Yang, Haipu Li, Bo Qiu
Summary: The present study characterized and authenticated Anhua brick tea using excitation-emission matrix fluorescence spectroscopy and chemometric methods. Four primary fluorophores were identified for the first time, and various classifiers were used to process different types and brands of brick tea. Results showed that the combination of full fluorescent data and NPLS-DA achieved the best classification results.
JOURNAL OF FOOD COMPOSITION AND ANALYSIS
(2022)
Article
Environmental Sciences
Ya Gao, Haipu Li, Yang Song, Fenglin Zhang, Zhaoguang Yang, Ying Yang, Teresa Grohmann
Summary: This study evaluates the tolerance and accumulation capacity of cadmium in carrot leaves and identifies the regulatory factors affecting the distribution of cadmium in carrots. By manipulating certain physiological indicators, the tolerance of carrot leaves to cadmium can be increased. These findings are important for achieving food safety and remediating contaminated soils.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Ecology
Changjin Jiang, Ting Zhang, Zhaoguang Yang
Summary: The study investigated the distribution of six potential toxic metals in water-sediment-submerged macrophyte systems in six shallow lakes in Changsha City, Central China. Vallisneria natans (Lour.) Hara was found to have the highest accumulation of metals, with the highest bioaccumulation factor (BAF) for Zn. The results suggest that native submerged macrophytes, especially V. natans, show potential for removing PTMs from urban shallow lakes.
Article
Environmental Sciences
Changjin Jiang, Ting Zhang, Shuhui Li, Zhaoguang Yang
Summary: Fe(III)-chitosan and Fe(III)-chitosan-CTAB composites were prepared and used for As(V) adsorption. Fe(III)-chitosan-CTAB showed higher adsorption efficiency. The adsorption kinetics fitted the pseudo-second-order model, while the adsorption isotherm fitted the Freundlich model. Both electrostatic attraction and surface complexation mechanisms played important roles in the adsorption process.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Environmental Sciences
Guobing Lin, Xiaoman He, Jiayuan Zeng, Zhaoguang Yang, Lin Wang
Summary: Arsenite (As(III)) is the most toxic and soluble form of arsenic in flooded paddy fields, leading to higher accumulation of arsenic in rice compared to other crops. This study found that inoculating rice plants with As(III)-oxidizing bacteria and supplementing additional phosphate can accelerate the conversion of As(III) to less toxic arsenate (As(V)) and restrict the uptake and translocation of arsenic, thereby mitigating arsenic toxicity to rice plants.
JOURNAL OF ENVIRONMENTAL SCIENCES
(2023)
Article
Ecology
Denglong Lu, Wenbao Luo, Haipu Li, Zhaoguang Yang
Summary: This study investigated the bioaccumulation, biotransformation, and detoxification of inorganic arsenic (iAs) in the liver of yellow catfish (Tachysurus fulvidraco) under dietary exposure to two iAs forms (arsenate (AsV) and arsenite (AsIII)). The results showed that both AsV and AsIII significantly accumulated in the fish, and the detoxification of iAs depended on arsenic methylation and the level of antioxidants. Both reduction and oxidation processes of iAs were found, and low toxicity intermediates were identified.
Article
Environmental Sciences
Zhaoxue Zhang, Yi Lu, Haipu Li, Ya Gao, Zhaoguang Yang
Summary: Rice is a staple food globally, but the increasing levels of Cadmium (Cd) in paddy soil cause Cd-contaminated rice, which poses a serious threat to human health. This study revealed and discussed the impact of Nickel (Ni) on the uptake and accumulation of Cd in rice.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Engineering, Chemical
Xu Yang, Jieshi Xiao, Jian Huang, Kaixiang Peng
Summary: This study introduces an online convolutional adversarial autoencoder (AAE) model to learn representative industrial process information. By extracting features that reflect diverse information and follow a Gaussian distribution, the model improves the accuracy of fault detection and removes redundant information through a feature selection strategy.
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2024)
Article
Engineering, Chemical
Shao-Yang Wu, Meng-Tsun Lai, Chung-Hui Hsu, Kevin C. W. Wu, Yesong Gu
Summary: This study investigated the effectiveness of using Fe-based MOF or MIL-100(Fe) in conjunction with a PEDOT-modified Pt electrode for detecting the synthetic azo dye tartrazine. By modifying the electrode with two different methods, favorable lower reductive potentials, competitive sensitivities, and good repeatability and stability were achieved in all MIL-100(Fe)/PEDOT/Pt electrodes.
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2024)
