Article
Engineering, Environmental
Simon Bayle, Maria Rosa Beccia, Christophe Moulin, Pier Lorenzo Solari, Christophe Den Auwer, Pierre Crancon
Summary: In this article, the speciation and behavior of anthropogenic metallic uranium deposited on natural soil were studied using a combination of EXAFS and TRLFS techniques. The study revealed that uranium migration is limited by sorption onto soil and rock constituents, particularly mineral carbonates and organic matter. Multiple adsorption complexes of uranyl onto carbonate materials were inferred, and the presence of a uranium-humic substance complex in subsurface soil materials was confirmed.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Engineering, Environmental
Eugene S. Ilton, Richard N. Collins, Cristiana L. Ciobanu, Nigel J. Cook, Max Verdugo-Ihl, Ashley D. Slattery, David J. Paterson, Sebastian T. Mergelsberg, Eric J. Bylaska, Kathy Ehrig
Summary: Research demonstrates that pentavalent uranium can stably exist in 1.6 billion year old hematite, which is significant for the geologic sequestration of nuclear waste, uranium-lead dating, and the use of uranium isotopes as paleo redox proxies.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2022)
Article
Engineering, Environmental
Ian Byrnes, Lisa Magdalena Rossbach, Jakub Jaroszewicz, Daniel Grolimund, Dario Ferreira Sanchez, Miguel A. Gomez-Gonzalez, Gert Nuyts, Estela Reinoso-Maset, Koen Janssens, Brit Salbu, Dag Anders Brede, Ole Christian Lind
Summary: Micro- and nanoscopic X-ray techniques were used to investigate the relationship between uranium tissue distributions and adverse effects on the digestive tract of Daphnia magna. The study showed that exposure to uranium nanoparticles (UNPs) resulted in adverse morphological changes to the midgut and hepatic ceca, as well as abnormal intestinal epithelial cells. High-resolution nano-XRF identified U particulates throughout the midgut and within hepatic ceca cells, coinciding with tissue damages. These findings highlight the importance of disrupted intestinal function as a mode of acute U toxicity in D. magna.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Environmental Sciences
Connaugh M. Fallon, William R. Bower, Brian A. Powell, Francis R. Livens, Ian C. Lyon, Alana E. McNulty, Kathryn Peruski, J. Frederick W. Mosselmans, Daniel Kaplan, Daniel Grolimund, Peter Warnicke, Dario Ferreira-Sanchez, Marja Siitari Kauppi, Gianni F. Vettese, Samuel Shaw, Katherine Morris, Gareth T. W. Law
Summary: Uranium dioxide (UO2) and metaschoepite (UO3 center dot nH(2)O) particles were studied under dynamic conditions representative of a contaminated site. The study revealed the oxidative dissolution and migration of UO2 over 1-2 cm in the direction of waterflow and against it. Metaschoepite particles also showed significant dissolution with marginal U migration. However, in both particle systems, the released U was retained in sediment as different U(IV) and U(VI) phases and no U was detected in the effluent.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Engineering, Environmental
Anshuman Satpathy, Jeffrey G. Catalano, Daniel E. Giammar
Summary: Adsorption and reduction of U(VI) on Fe(II)-bearing clay minerals can control uranium mobility in subsurface environments. The reduction of U(VI) was nearly complete at low sodium concentrations and both pH 3 and 6. At pH 6 and high sodium concentrations, U(VI) reduction was only 70%. Surface-bound U(VI) on unreduced montmorillonite was more easily extracted into solution with bicarbonate than surface-bound U(IV) generated by reduction. A nonelectrostatic surface complexation model was developed to interpret the equilibrium adsorption of U(IV) on Fe(II)-bearing montmorillonite as a function of pH and sodium concentration.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2022)
Article
Chemistry, Physical
Seon Yong Lee, Heegon Kim, Haeseong Jang, Min-Jin Hwang, Ki Bong Lee, Jae-Woo Choi, Kyung-Won Jung
Summary: Hierarchically structured manganese ferrite microsphere-coated magnetic biochar composite was synthesized via a solvothermal process for efficient removal of Sb(V) from aqueous solutions. X-ray absorption spectroscopy characterization revealed the mechanism of interaction between the composite and Sb(V), showing promising potential for practical application in contaminated water treatment.
APPLIED SURFACE SCIENCE
(2022)
Article
Environmental Sciences
Liqiang Cui, James A. Ippolito, Matt Noerpel, Kirk G. Scheckel, Jinlong Yan
Summary: When wheat straw biochar was applied to Cd-containing solutions, Cd and Zn concentrations decreased and Ca and Mg concentrations increased, while pH also increased. Similar responses were observed when biochar was added to Cd-contaminated paddy soil, indicating biochar's ability to sequester toxic elements and release necessary nutrients. Nutrient release correlated positively over time, while biochar application rate correlated negatively with toxic element sorption and pH.
Article
Materials Science, Ceramics
N. Praveena, Hrudananda Jena, Ravi Kumar, S. N. Jha, D. Bhattacharyya, Sher Singh Meena
Summary: A zinc iron phosphate glass loaded with 5-15 mol% UO3 was prepared by melt quench process. The solubility of UO3 in ZnIP was determined to be below 15 mol%, with separation of UP2O7 compound observed beyond this concentration. Fe(II)/Fe(III) ratio was found to decrease from 0.071 to 0.029, and two types of coordination for U-O and Fe-O were prevalent in the ZnIP glass matrix, while a single chemical environment for Zn-O was observed.
CERAMICS INTERNATIONAL
(2021)
Article
Chemistry, Inorganic & Nuclear
Daniel J. Curran, Gaurab Ganguly, Yonaton N. Heit, Nikki J. Wolford, Stefan G. Minasian, Matthias W. Loble, Samantha K. Cary, Stosh A. Kozimor, Jochen Autschbach, Michael L. Neidig
Summary: C-term NIR MCD spectroscopy is a powerful tool for studying the electronic structure and bonding of U(v) complexes, with the ability to provide high resolution fine structure information. Experimental and theoretical approaches were combined to investigate the f-f transitions in these complexes and further understanding of their spectral features.
DALTON TRANSACTIONS
(2021)
Article
Environmental Sciences
Sang-Gyu Yoon, Ihn-Sil Kwak, Hye-On Yoon, Jinsung An
Summary: This study assessed the adsorption characteristics of dimethylated arsenicals to rice husk biochar and Fe/biochar composite through experiments and analysis. The results showed that FeBC had a strong adsorption capacity for dimethylated arsenicals and could transform them into less toxic forms.
Article
Chemistry, Physical
Weifeng Huang, Jianxin Kang, Tingwen Chen, Dawei Pang, Lihua Wang, Hang Wei, Changchun Yang, Dongfeng Zhang, Lin Guo
Summary: Nickel based magnetic nanocrystals have wide applications in magnetic and catalytic fields. Tunable magnetic properties of nickel can be achieved through non-magnetic doping or phase transformation. This study presents a way to control the magnetism of Au@Ni-carbide magnetic materials by adjusting the amount of carbon in the Ni layer, and provides solid evidence for the carbonation process from fcc-Ni to Ni X C instead of phase transformation to hcp-Ni. Further investigation reveals that the magnetism of the hybrids is mainly contributed from the residual fcc-Ni.
Article
Environmental Sciences
Matheus B. Soares, Owen W. Duckworth, Luis R. F. Alleoni
Summary: This study aimed to evaluate the sorption potential of As(V) in biogenic iron (oxyhydr)oxides (BIOS) in the presence of dissolved organic carbon (DOC) from biochar and investigate the surface complexes formed by As(V) sorbed in BIOS. The presence of DOC reduced the sorption of As(V) by 25% without changing the binding mechanism in BIOS.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Chemistry, Physical
Yao-Jen Tu, Shan-Li Wang, Ying-Rui Lu, Ting-Shan Chan, Cliff T. Johnston
Summary: This study synthesized six kinds of magnetic nanoferrites to investigate their ability in removing Sb(III) and Sb(V) from aquatic systems. The results showed that ZnFe2O4 had great potential to adsorb and oxidize Sb(III) in aqueous solutions, providing essential information for designing a rapid and effective Sb removal technique.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Review
Chemistry, Physical
Francisco Zaera
Summary: Catalysis in industrial chemical processes has long been studied through various spectroscopic techniques like vibrational and X-ray spectroscopies, allowing for a molecular-level understanding of catalytic mechanisms. These techniques help researchers explore the intricate details of catalytic processes and advancements in the field.
JOURNAL OF CATALYSIS
(2021)
Article
Chemistry, Physical
Yogesh Kumar, S. Tripathi, Mangla Nand, R. Jangir, V. Srihari, A. Das, R. Singh, U. Deshpande, S. N. Jha, A. Arya
Summary: This study investigated the effect of Nd doping on the structural, optical, and electronic properties of lanthanum monazite structure. Pure and Nd-doped LaPO4 powders were prepared and analyzed for their composition, oxidation states, crystal structure, and bandgaps. The results confirmed the successful substitution of Nd in the LaPO4 matrix and provided insights into the local structure using extended X-ray absorption fine structure analysis.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Multidisciplinary
Lijia Dong, Qian Li, Qing Liao, Chunyan Sun, Xue Li, Qingzhou Zhao, Runpu Shen, Baoshan Zhao, Abdullah M. Asiri, Hadi M. Marwani, Xilin Wu, Baowei Hu
SEPARATION SCIENCE AND TECHNOLOGY
(2019)
Article
Chemistry, Applied
Huihui Wang, Qian Li, Sai Zhang, Zhongshan Chen, Weixue Wang, Guixia Zhao, Li Zhuang, Baowei Hu, Xiangke Wang
Article
Engineering, Environmental
Shuang Song, Sai Zhang, Shuyi Huang, Rui Zhang, Ling Yin, Yezi Hu, Tao Wen, Li Zhuang, Baowei Hu, Xiangke Wang
CHEMICAL ENGINEERING JOURNAL
(2019)
Article
Engineering, Environmental
Ling Yin, Yezi Hu, Ran Ma, Tao Wen, Xiangxue Wang, Baowei Hu, Zhimin Yu, Tasawar Hayat, Ahmed Alsaedi, Xiangke Wang
CHEMICAL ENGINEERING JOURNAL
(2019)
Article
Engineering, Environmental
Pengcheng Gu, Chaofeng Zhao, Tao Wen, Yuejie Ai, Sai Zhang, Weiqiang Chen, Jian Wang, Baowei Hu, Xiangke Wang
CHEMICAL ENGINEERING JOURNAL
(2019)
Article
Engineering, Environmental
Baowei Hu, Xiaojie Guo, Cong Zheng, Gang Song, Diyun Chen, Yuling Zhu, Xiaofei Song, Yubing Sun
CHEMICAL ENGINEERING JOURNAL
(2019)
Article
Engineering, Environmental
Min Wang, Wen Cheng, Tian Wan, Baowei Hu, Yuling Zhu, Xiaofei Song, Yubing Sun
CHEMICAL ENGINEERING JOURNAL
(2019)
Article
Engineering, Environmental
Hongwei Pang, Zhuofan Diao, Xiangxue Wang, Yan Ma, Shujun Yu, Hongtao Zhu, Zhongshan Chen, Baowei Hu, Jianrong Chen, Xiangke Wang
CHEMICAL ENGINEERING JOURNAL
(2019)
Review
Chemistry, Multidisciplinary
Hongwei Pang, Yihan Wu, Xiangxue Wang, Baowei Hu, Xiangke Wang
CHEMISTRY-AN ASIAN JOURNAL
(2019)
Article
Environmental Sciences
Tian Wan, Songhua Lu, Wen Cheng, Jiehui Ren, Min Wang, Baowei Hu, Ziyi Jia, Ying Li, Yubing Sun
ENVIRONMENTAL POLLUTION
(2019)
Article
Chemistry, Physical
Baowei Hu, Yuanzhi Song, Siying Wu, Yuling Zhu, Guodong Sheng
JOURNAL OF MOLECULAR LIQUIDS
(2019)
Article
Engineering, Environmental
Zhibin Zhang, Zhimin Dong, Xiangxue Wang, Ying Dai, Xiaohong Cao, Youqun Wang, Rong Hua, Haitao Feng, Jianrong Chen, Yunhai Liu, Baowei Hu, Xiangke Wang
CHEMICAL ENGINEERING JOURNAL
(2019)
Article
Engineering, Environmental
Shanye Yang, Qian Li, Liang Chen, Zhongshan Chen, Zengxin Pu, Huihui Wang, Shujun Yu, Baowei Hu, Jianrong Chen, Xiangke Wang
JOURNAL OF HAZARDOUS MATERIALS
(2019)
Article
Chemistry, Physical
Sai Zhang, Shuang Song, Pengcheng Gu, Ran Ma, Dongli Wei, Guixia Zhao, Tao Wen, Riffat Jehan, Baowei Hu, Xiangke Wang
JOURNAL OF MATERIALS CHEMISTRY A
(2019)
Article
Chemistry, Inorganic & Nuclear
Pengcheng Gu, Sai Zhang, Chenlu Zhang, Xiangxue Wang, Ayub Khan, Tao Wen, Baowei Hu, Ahmed Alsaedi, Tasawar Hayat, Xiangke Wang
DALTON TRANSACTIONS
(2019)