Article
Metallurgy & Metallurgical Engineering
N. P. Dushyantha, N. P. Ratnayake, H. M. R. Premasiri, I. M. S. K. Ilankoon, P. V. A. Hemalal, C. L. Jayawardena, Rohana Chandrajith, L. P. S. Rohitha, A. M. K. B. Abeysinghe, D. M. D. O. K. Dissanayake, P. G. R. Dharmaratne, A. S. Ratnayake, N. M. Batapola
Summary: The study investigates the potential of lake sediments around the Eppawala Phosphate Deposit in Sri Lanka as a secondary source of rare earth elements (REEs). Experimental results reveal three fractions of REEs in lake sediments and identify the optimal leaching conditions for ion-adsorbed fraction. Acid leaching is proven to be the most effective leaching process for extracting REEs from the sediments, providing valuable insights for assessing low-grade geological resources in similar geological settings.
Article
Environmental Sciences
Xiaolin Ou, Zhibiao Chen, Bengen Hong, Haiyan Wang, Liujun Feng, Youcun Liu, Mingyong Zhu, Zuliang Chen
Summary: The distribution and transport of ammonium nitrogen (NH4+-N) and nitrate nitrogen (NO3 �-N) in ion-absorption rare earth tailings remains unclear. This study conducted soil column leaching experiments to assess the transport and distribution of NH4+-N and NO3 �-N after mine closure. The results showed that NH4+-N concentration decreased with time, while NH4+-N and NO3 �-N content varied greatly with depth. NH4+-N caused soil acidification, and NO3 �-N derived from NH4+-N posed a long-lasting threat to the environment.
ENVIRONMENTAL RESEARCH
(2023)
Article
Engineering, Environmental
Hui Tong, Chunju Zheng, Bing Li, Elizabeth D. Swanner, Chengshuai Liu, Manjia Chen, Yafei Xia, Yuhui Liu, Zengping Ning, Fangbai Li, Xinbin Feng
Summary: Microaerophilic Fe(II)-oxidizing bacteria in karstic paddy soils can increase soil organic carbon and mitigate arsenic contamination by fixing carbon and forming Fe(III) (oxyhydr)oxides. Despite decreased Fe(II) oxidation rates and carbon fixation diversity in the presence of As(III), over 90% of As(III) can be sequestered post-oxidation, indicating the potential for microbially mediated As(III) oxidation.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2021)
Article
Engineering, Environmental
Nanqing Zhou, Robert J. Kupper, Jeffrey G. Catalano, Aaron Thompson, Clara S. Chan
Summary: This study demonstrates that Fe(II)-smectite can support microbial growth and expands the mechanisms of Fe(II)-smectite alteration in the environment.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2022)
Article
Biology
Ulf Lueder, Markus Maisch, Bo Barker Jorgensen, Gregory Druschel, Caroline Schmidt, Andreas Kappler
Summary: This study compares the cultivation methods of microaerophilic Fe(II)-oxidizing microorganisms using agar-stabilized gradient tubes and liquid cultures, and utilizes Fe(II) produced by Fe(III) photoreduction as the electron donor. The results show that the growth of microaerophilic Fe(II)-oxidizing bacteria is best observed under UV light, and these bacteria contribute significantly to Fe(II) oxidation.
Article
Toxicology
Malek Jomaa, Guillaume Pelletier, Denis Dieme, Jonathan Cote, Hamadi Fetoui, Andy Nong, Michele Bouchard
Summary: This study showed that dose and mixture exposure are two important factors that affect the toxicokinetics of rare earth elements (REEs). The half-lives of praseodymium (Pr) and cerium (Ce) in blood increased with increasing doses, while the cumulative excretion in urine was not significantly affected by the dose. The fraction of Pr dose recovered in feces was significantly lower at the higher dose, while the dose effect on Ce was not significant. Dose had a significant effect on the retention of Ce in the spleen, but not on Pr.
ARCHIVES OF TOXICOLOGY
(2023)
Article
Toxicology
Malek Jomaa, Guillaume Pelletier, Denis Dieme, Jonathan Cote, Hamadi Fetoui, Andy Nong, Michele Bouchard
Summary: We conducted a study on rats to assess the effects of dose and co-exposure with other rare earth elements (REEs) on the toxicokinetics of praseodymium (Pr) and cerium (Ce). The study showed that dose and mixture exposure are important factors determining the toxicokinetics of REEs.
ARCHIVES OF TOXICOLOGY
(2023)
Article
Engineering, Environmental
Muhammad Adeel, Noman Shakoor, Tariq Hussain, Imran Azeem, Pingfan Zhou, Peng Zhang, Yi Hao, Jorg Rinklebe, Yukui Rui
Summary: This study investigated the detoxification potential of La2O3 and Yb2O3 on earthworm E. fetida and their impact on biochemical and genetic markers. Results showed that these rare earth elements induced neurotoxicity, reproductive effects, and changes in cell and tissue structures in earthworms at different concentrations.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Engineering, Environmental
Hui Tong, Manjia Chen, Yahui Lv, Chengshuai Liu, Chunju Zheng, Yafei Xia
Summary: Fe(II)-oxidizing bacteria play a crucial role in iron cycling in various environments, but their distribution and diversity in flooded paddy soils have been less studied. This research investigates the microbial structure and diversity of microaerophilic Fe(II)-oxidizing bacteria in iron-rich paddy soils through enrichment experiments. The study found that the Fe(II) oxidation rate decreased with increased transfers, with certain bacterial phyla becoming dominant, suggesting the involvement of other bacterial species in the Fe(II)-oxidizing process.
ENVIRONMENTAL GEOCHEMISTRY AND HEALTH
(2021)
Article
Geochemistry & Geophysics
Maochao Zhang, Zheng Gong, Jun Li, Yuanyuan Pan, Qian Jin, Chengmin Huang
Summary: Paleo-weathering crust rare earth element (REE) sedimentary ores (PWREOs), related to weathering of the Permian Emeishan basalts, were studied in Guizhou Province, China. The paleosols showed enrichment of light REEs relative to heavy REEs, with high concentrations of REEs found in kaolinite-rich horizons. The weathering products, including claystones, also showed enrichment of REEs. The formation of PWREOs involves the initial high REE contents in the Emeishan basalts, the primary enrichment during weathering, and the further enrichment during transportation and sedimentation.
JOURNAL OF GEOCHEMICAL EXPLORATION
(2023)
Article
Toxicology
Malek Jomaa, Denis Dieme, Mathieu Desrosiers, Jonathan Cote, Hamadi Fetoui, Guillaume Pelletier, Andy Nong, Michele Bouchard
Summary: The study found that the administered dose significantly impacts the toxicokinetics of rare earth elements, with higher doses leading to lower excretion in urine and feces. Additionally, toxicokinetic parameters showed significant increases at the highest dose, reflecting a potential shift in kinetics due to higher retention in lysosomes.
TOXICOLOGY LETTERS
(2021)
Article
Engineering, Chemical
Dominik Boehm, Konrad Czerski, Stephan Gottlieb, Armin Huke, Goetz Ruprecht
Summary: This article presents a sustainable separation concept for large-scale recycling of NdFeB magnets. It combines two separation concepts from the literature: selective pre-separation by in situ chlorination and evaporation, and subsequent distillation for high-purity recovery of recyclable material components, including Rare Earth Elements (REEs).
Article
Chemistry, Analytical
Jianyin Huang, Jodie Hills, Peter R. Teasdale, Jared G. Panther, Feiyue Wang, David T. Welsh
Summary: The study validated a DGT technique for determining lanthanide rare earth elements (REEs) in sediment pore waters, showing high sensitivity and reliability for measuring REE concentrations.
Article
Environmental Sciences
Dexing Jiang, Wenwen Gao, Guoxiang Chen
Summary: Rare earth element La(III) significantly inhibits the photosynthesis and growth of rice seedlings. La(III) exposure leads to a decrease in chlorophyll content and photosynthetic capacity, as well as an accumulation of other nutrients in the leaves. La(III) stress disrupts both the donor and receptor sides of photosystem II and promotes the degradation of photosynthetic complexes, ultimately resulting in the destruction of the chloroplast structure.
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
(2023)
Article
Geography, Physical
Laszlo Kocsis, Alex Ulianov, Mustapha Mouflih, Fatima Khaldoune, Emmanuel Gheerbrant
Summary: Various geochemical analyses were conducted on Paleogene terrestrial mammal remains to determine their taphonomy, stratigraphic provenance, and paleoenvironmental conditions. The results suggest that the mammal fossils were initially deposited in a marine setting before being washed into the sea. By comparing ratios with background datasets, researchers were able to characterize the stratigraphic levels bearing the fossils.
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
(2021)
Article
Geosciences, Multidisciplinary
Dongjie Tang, Xiaoying Shi, Qing Shi, Jinjian Wu, Gaoyuan Song, Ganqing Jiang
JOURNAL OF ASIAN EARTH SCIENCES
(2015)
Article
Geosciences, Multidisciplinary
Dongjie Tang, Xiaoying Shi, Xinqiang Wang, Ganqing Jiang
PRECAMBRIAN RESEARCH
(2016)
Article
Geosciences, Multidisciplinary
Dongjie Tang, Xiaoying Shi, Jianbai Ma, Ganging Jiang, Xigiang Zhou, Qing Shi
PRECAMBRIAN RESEARCH
(2017)
Article
Geosciences, Multidisciplinary
Dongjie Tang, Xiaoying Shi, Ganging Jiang, Tong Wu, Jianbai Ma, Xigiang Zhou
Article
Geography, Physical
Xiangkuan Zhao, Xinqiang Wang, Xiaoying Shi, Dongjie Tang, Qing Shi
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
(2018)
Article
Geosciences, Multidisciplinary
Pengbo Li, Dongjie Tang, Xiaoying Shi, Ganqing Jiang, Xiangkuan Zhao, Xiqiang Zhou, Xinqiang Wang, Xi Chen
PRECAMBRIAN RESEARCH
(2018)
Article
Geosciences, Multidisciplinary
Dongjie Tang, Xiaoying Shi, Ganqing Jiang
PRECAMBRIAN RESEARCH
(2014)
Article
Geochemistry & Geophysics
Mohan Shang, Dongjie Tang, Xiaoying Shi, Limin Zhou, Xiqiang Zhou, Huyue Song, Ganqing Jiang
EARTH AND PLANETARY SCIENCE LETTERS
(2019)
Article
Geosciences, Multidisciplinary
Anqi Liu, Dongjie Tang, Xiaoying Shi, Xiqiang Zhou, Limin Zhou, Mohan Shang, Yang Li, Hao Fang
PRECAMBRIAN RESEARCH
(2020)
Article
Geochemistry & Geophysics
Beilei Wei, Dongjie Tang, Xiaoying Shi, Maxwell Lechte, Limin Zhou, Xiqiang Zhou, Huyue Song
Summary: An integrated study on the fossil-bearing Tuanshanzi Formation in North China suggests dynamic redox conditions, with evidence of increased oxygen concentration in the fossil-bearing interval and deoxygenation in the overlying and underlying strata. The data indicate that pulsed marine oxygenations may have facilitated short-term diversification of eukaryotes in shallow seawaters during the mid-Proterozoic.
GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS
(2021)
Article
Geosciences, Multidisciplinary
Dongjie Tang, Xuewu Fu, Xiaoying Shi, Limin Zhou, Wang Zheng, Chao Li, Dongtao Xu, Xiqiang Zhou, Baozeng Xie, Xiyan Zhu, Ganqing Jiang
Summary: This study examines an oxygenation event that occurred around 1.57 billion years ago in the Gaoyuzhuang Formation of North China. The data analysis suggests that the event was likely caused by enhanced weathering of intermediate to mafic rocks, leading to increased phosphorus influx to the ocean and a rise in oxygen levels.
GEOPHYSICAL RESEARCH LETTERS
(2022)
Article
Environmental Sciences
Dongjie Tang, Hao Fang, Xiaoying Shi, Liyuan Liang, Limin Zhou, Baozeng Xie, Kangjun Huang, Xiqiang Zhou, Mengting Wu, Robert Riding
Summary: Marine carbonate fabrics are closely related to ocean chemistry, physical processes, and biological activity. By studying the MTS structure in Proterozoic carbonate sediments, a connection between its occurrence and increased marine oxygenation was identified. The presence of carbonate mud and the oxidative removal of inhibitors in the water column stimulated the precipitation of mud, while methane degassing in organic-rich carbonate mud led to crack formation. This study suggests that MTS formed under moderately oxygenated conditions and reflects episodes of pulsed marine oxygenation in overall anoxic settings.
JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES
(2023)
Article
Geosciences, Multidisciplinary
An-Qi Liu, Dong-Jie Tang, Xiao-Ying Shi, Li-Min Zhou, Xi-Qiang Zhou, Mo-Han Shang, Yang Li, Hu-Yue Song
JOURNAL OF PALAEOGEOGRAPHY-ENGLISH
(2019)
Article
Geochemistry & Geophysics
Dongjie Tang, Xiaoying Shi, Ganqing Jiang, Xiqiang Zhou, Qing Shi
AMERICAN MINERALOGIST
(2017)
Article
Geosciences, Multidisciplinary
Bin Zhang, Jiaqi Liu, Wen Chen, Zhiliang Zhang, Li Yang, Lei Zhang, Zeyang Zhu, Chunqing Sun, Zhihao Sun
Summary: The eastern Tibetan Plateau is a region with unique topography and active tectonics, making it crucial for studying geodynamics and lithosphere-atmosphere interaction. By integrating new and reported thermochronological data, as well as paleo-crustal thickness reconstruction, this study sheds light on the tectonic deformation, climate-tectonic coupling, and geodynamics of the area.
Article
Geosciences, Multidisciplinary
Zhenhua Tian, Shangwen Zhou, Songtao Wu, Sai Xu, Junping Zhou, Jianchao Cai
Summary: This paper presents a modified method for calculating the lost gas content of shale by analyzing the coring and on-site desorption processes. The method accurately depicts the loss characteristics of free and adsorbed gas and identifies parameters that influence the calculation of in-situ shale gas content. The results demonstrate that the method shows satisfactory applicability in gas loss curve prediction and in-situ gas content estimation.
Article
Geosciences, Multidisciplinary
Pengcheng Li, Jaffar Abbas, Daniel Balsalobre-Lorente, Qingren Wang, Qianxiao Zhang, Syed Ale Raza Shah
Summary: This study explores the factors contributing to sustainability in Pakistan from 1974 to 2018 and finds that emissions from industrial and agriculture sectors have significantly decreased, while the financial sector has not effectively reduced environmental pressure. Therefore, Pakistan needs to adjust its economic policies and ensure the green allocation of financial resources.
Article
Geosciences, Multidisciplinary
Shi Zhou, Ting Zhou, Duo Guan, Yong Yao, Huimin Sun, Ahmed Ali Mosa, Yajie Zuo, Xianqiang Yin
Summary: Graphitic carbon nitride (g-C3N4) has been widely used due to its excellent optical properties and physicochemical stability. The risk of g-C3N4 transport in the environment has been overlooked, but this study investigated its transport behavior in various media. The results showed that flow rate and ionic strength influenced the transport, and the presence of lead (Pb) affected the outflow of g-C3N4. The unique structure of g-C3N4 particles allowed them to deposit in certain media and act as carriers for Pb release.
Article
Geosciences, Multidisciplinary
Xiaolong Qiao, Muntasir Murshed, Mohammad Mahtab Alam, Narasingha Das, Kurshid Khudoykulov, Salman Tariq
Summary: This study examines how macroeconomic factors influence India's carbon emission intensity levels and confirms the impact of factors such as foreign remittance receipts, energy consumption, urbanization, and technological progress. The findings provide policy recommendations for India's carbon emission reduction targets.
Article
Geosciences, Multidisciplinary
Wei Liu, Bo Wan
Summary: Magmatic-hydrothermal systems play a crucial role in transporting materials and potentially affecting Earth's long-term environment. This study investigates the duration of prograde metamorphism induced by fluid infiltration and the amount of carbon released by skarn ore deposits. The findings reveal that skarn ore deposits can efficiently decarbonize CO2 at a high rate, surpassing volcanism in different tectonic settings. The CO2 flux of skarn deposits increases over time and reaches a maximum value at the J/K boundary, providing an important previously unquantified source of outgassing in the subduction zone.
Article
Geosciences, Multidisciplinary
Haikuan Nie, Pei Li, Qing Chen, Zhijun Jin, Quanyou Liu, Wei Dang, Qian Chen, Jianghui Ding, Changbo Zhai
Summary: This study investigates the shale quality and shale gas potential in the upper Ordovician to lower Silurian formations in the Sichuan Basin of southern China. The distribution and characteristics of organic-rich shale are analyzed, aiding in the assessment of shale gas potential and identification of sweet spots.
Article
Geosciences, Multidisciplinary
Najia Saqib, Shujaat Abbas, Ilhan Ozturk, Muntasir Murshed, Malgorzata Tarczynska-Luniewska, Mohammad Mahtab Alam, Waldemar Tarczynski
Summary: This study examines the impact of economic growth, financial development, eco-friendly ICT, renewable energy, and human capital on lowering carbon footprint in the world's top polluting economies from 1993 to 2020. The findings suggest that eco-friendly ICT has the potential to effectively alleviate pollution, and financial development, renewable energy, and environmental technology are proposed as potential solutions for reducing carbon emissions.
Article
Geosciences, Multidisciplinary
Hikmat Salam, Syed Ali Turab, Asghar Ali, M. Qasim Jan, Norasiah Sulaiman, Mohd Basril Iswadi Basori
Summary: The Kahi melange complex in NW Pakistan is an important record of the tectonic evolution between the Indian plate and the Afghan block, consisting of highly dismembered ophiolitic and sedimentary units.
Article
Geosciences, Multidisciplinary
Er-Kun Xue, Wei Wang, David Chew, Manoj K. Pandit, Xin Deng, Yang Tian, Xi-Run Tong, Jun-Hong Zhao
Summary: The study reveals the presence of water-fluxed melting during the Wuyi-Yunkai Orogeny in South China. These water-fluxed melting quartzo-feldspathic migmatites formed during the early Paleozoic and were melted through reactions involving water-saturated quartz, feldspar, biotite, and K-feldspar. The findings highlight the significance of water-fluxed anatexis in the differentiation of the continental crust during orogenesis.
Article
Geosciences, Multidisciplinary
Hadi Shafaii Moghadam, Qiu-Li Li, William L. Griffin, Xian-Hua Li, Orhan Karsli, Christopher J. Spencer, Jose F. Santos, Maria Kirchenbaur, Sobhi Nasir, Suzanne Y. O'Reilly
Summary: Understanding the crustal growth, reworking, and geodynamics of the northern continental margin of Gondwana during the Ediacaran to Silurian times is crucial for the paleogeographic reconstruction of Gondwana. This study uses various analytical methods to evaluate the magmatic history of this region and obtain relevant detrital zircon data. The results provide valuable insights into the crustal evolution and tectonic activities in the northern Gondwana region.
Article
Geosciences, Multidisciplinary
Laura Petrescu, Felix Borleanu, Emanuel Kaestle, Randell Stephenson, Anica Placinta, Oleksandr Ivanovich Liashchuk
Summary: This study investigates the seismic structure of the Eastern European lithosphere and the transition from Precambrian to Phanerozoic Europe. The results show that the crust thickens across the Trans European Suture Zone boundary and the mantle is seismically faster beneath younger terranes. The Precambrian building blocks exhibit contrasting seismic fabrics, with the Baltic orogens characterized by uniform crust and the Sarmatia region showing alternating high and low velocity layers.
Article
Geosciences, Multidisciplinary
Dongya Zou, Hongfu Zhang
Summary: This study analyzes the U-Pb-Hf-O isotopes of zircons in felsic granulite xenoliths from the Fuxin late Cretaceous basalts in the North China Craton to evaluate the role of magma underplating in modifying the Archean lower crust. The results show that long-lived magma underplating occurred beneath the Fuxin region during the Mesozoic, with underplated magmas originating from the lithospheric mantle and later from the depleted asthenospheric mantle. This study concludes that magma underplating not only provided heat for remelting, but also added exotic material and weakened the lower crust, leading to its destruction.
Article
Geosciences, Multidisciplinary
Yu Han, Yingchang Cao, Chao Liang, Keyu Liu, Fang Hao
Summary: A paleoclimate reconstruction based on high-resolution records from lacustrine shale in the Bohai Bay Basin reveals a shift in orbital variability and a humidification event at -41.9 Ma in East Asia. The intensification of the East Asian monsoons at this time was likely a response to the elevated atmospheric pCO2 during the concurrent global warming.
Article
Geosciences, Multidisciplinary
Francesca Innocenzi, Sara Ronca, Stephen Foley, Samuele Agostini, Michele Lustrino
Summary: This study investigates two volcanic provinces in the western branch of the East African Rift and finds that the volcanic products show wide variability in chemical and mineralogical characteristics. Petrographic and geochemical analysis reveals enriched and heterogeneous sub-lithospheric mantle sources. The differences in isotopic features between the two volcanic provinces may indicate changes in the composition, mineralogy, and depth of melting in the lithospheric mantle source.