Review
Microbiology
Eva Duborska, Katarina Balikova, Michaela Matulova, Ondrej Zverina, Bence Farkas, Pavol Littera, Martin Urik
Summary: Iodine, an essential micronutrient for most living beings including humans, plays a crucial role in the global geochemical cycle. Its production of volatile methylated iodides is important for mitigating climate change, making its biogeochemistry worthy of study. This review aims to provide information on its origin, global fluxes, and production mechanisms in the environment.
FRONTIERS IN MICROBIOLOGY
(2021)
Article
Engineering, Environmental
Naushita Sharma, Chao Zeng, Andrew Eaton, Tanju Karanfil, Amlan Ghosh, Paul Westerhoff
Summary: This study investigates the concentrations of bromine and iodine species in drinking water sources and wastewater effluents in the United States. The results show that bromide and iodide were present in both surface water and groundwater samples, with higher concentrations in groundwater. Inorganic iodine species were predominant in groundwater samples, while organic iodine species contributed to a significant portion of total iodine in surface water samples. The study also observed seasonal cycling of iodine species in lakes. There was a strong correlation between bromine and iodine in surface water samples.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Chemistry, Physical
Tingting Pan, Xinglong Dong, Yu Han
Summary: Hydrophobic zeolites are suitable adsorbents for capturing radioactive iodine species. This study demonstrates that the composition and pore structure of zeolites significantly affect their iodine adsorption performance. A novel all-silica ExxonMobil material-17 (EMM-17) zeolite exhibits high adsorption capacity for iodine and methyl iodide in the presence of water. EMM-17 outperforms previously reported zeolites in terms of adsorption capacity.
Article
Polymer Science
Qian Zhang, Na Li, Jun Li, Zhi-Guo Hu, Tian-Jiao Yue, Hai-Ming Guo
Summary: Three tetraethylene glycol-based polymers were synthesized to prepare polymer/pyridine gels for efficient adsorption of methyl iodide. The adsorption capacities of these gels were higher than those of other reported adsorbents, and further investigation revealed the reaction mechanism between pyridine and methyl iodide. These polymers also demonstrated moderate adsorption capacities for iodine vapor, showing a new application for tetraethylene glycol-based polymers.
Article
Environmental Sciences
Shanying Zhang, Yu Zhang, Saihao Ren, Hongwei Lu, Jiaomei Li, Xiaoyu Liang, Lifeng Wang, Yuanbo Li, Meng Wang, Chenghui Zhang
Summary: Acetamiprid (ACE) and cyromazine (CYR) are frequently used pesticides in cowpea growing areas in Hainan. This study investigated their uptake, translocation, subcellular distribution, and metabolic pathway in cowpea. The results showed that both pesticides were mainly distributed in leaves, and their subcellular distribution was primarily in the cell soluble fraction. Metabolic reactions such as dealkylation, hydroxylation, and methylation were observed. The dietary risk assessment revealed that while ACE is safe, CYR poses an acute risk to infants and young children.
ENVIRONMENTAL POLLUTION
(2023)
Article
Environmental Sciences
Yunfeng Shi, Song Yang, Wenjie Chen, Weijia Xiong, Aiming Zhang, Zhixiang Yu, Bing Lian, Chuan-Pin Lee
Summary: This study investigates the transport behavior of tritiated water and iodine species in a compacted granite column. Anion exclusion effect is observed only in iodine transport, and it is influenced by the flow rate.
Article
Chemistry, Multidisciplinary
Linwei He, Long Chen, Xinglong Dong, Shitong Zhang, Mingxing Zhang, Xing Dai, Xiajie Liu, Peng Lin, Kunfeng Li, Cailing Chen, Tingting Pan, Fuyin Ma, Junchang Chen, Mengjia Yuan, Yugang Zhang, Lei Chen, Ruhong Zhou, Yu Han, Zhifang Chai, Shuao Wang
Summary: A new design philosophy involving a nitrogen-rich covalent organic framework material with enhanced specific host-guest interactions has been proposed for the simultaneous capture of both iodine gas and organic iodide. This material shows an ultrahigh uptake capacity under static sorption conditions and record-high iodine loading capability under dynamic conditions.
Article
Chemistry, Multidisciplinary
Xiulan He, Andrew G. Ewing
Summary: The study reveals the significant impact of Hofmeister effects on the activity and functions of biological molecules. It investigates the influence of anionic species treatment on the vesicular content and dynamics of exocytosis, showing distinct changes in the dynamics of vesicle release and opening after treatment with chaotropic anions.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2022)
Article
Engineering, Environmental
Xiaoying Zhang, Zheng Wang, Paul Reimus, Funing Ma, Mohamad Reza Soltanian, Baoshan Xing, Jianzheng Zang, Yu Wang, Zhenxue Dai
Summary: This study investigates the concurrent transport of plutonium (Pu) species in the subsurface environment and reveals the sorption behavior of each species. The experimental results show that the transport behavior of Pu is affected by its oxidation states and species. The model developed in this study can describe the sorption of Pu species occurring either on fracture surfaces or in the rock matrix. Moreover, the study finds that the sorption rate of all Pu species tends to decrease with increasing time scales.
Article
Biotechnology & Applied Microbiology
Xiaodi Duan, Xiaoxiao Niu, Jiong Gao, Stanislaw Waclawek, Liang Tang, Dionysios Dionysiou
Summary: This article compares the differences between sulfate radical and other reactive species, and discusses their effectiveness in removing organic pollutants, as well as the experimental and computational tools used to distinguish the role of sulfate radical.
CURRENT OPINION IN CHEMICAL ENGINEERING
(2022)
Article
Chemistry, Physical
Zicong Chen, Zhenyu Yang, Shijie Du, Dabin Lin, Fangteng Zhang, Youjun Zeng, Guanyu Liu, Zhaogang Nie, Lin Ma
Summary: The thermal decomposition properties of mixed cation organic-inorganic halide perovskites were investigated, revealing the influence of cation ratios on the thermal stability of perovskites.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2023)
Review
Chemistry, Physical
Tingting Pan, Kaijie Yang, Xinglong Dong, Yu Han
Summary: Nuclear energy, as a sustainable low-carbon energy source, has become increasingly important for the progress of human society. However, safety issues related to nuclear reactors, especially the harmful effects of radioactive iodine compounds, need to be addressed. Adsorption processes using porous solid adsorbents have gained attention due to their simplicity and low maintenance cost, but certain practical application issues have been overlooked.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Environmental Sciences
Tianqi Wang, Pavani Dulanja Dissanayake, Mingzhe Sun, Zeyu Tao, Wei Han, Ning An, Qinfen Gu, Dehua Xia, Bingbing Tian, Yong Sik Ok, Jin Shang
Summary: Functionalized biochar was developed as low-cost and heavy metal-free photocatalysts through an iodine doping method, showing efficient adsorption and visible-light-driven degradation of organic pollutants. Iodine doping improved adsorption and photocatalytic activity significantly, making it a promising option for sustainable environmental remediation using biomass waste.
ENVIRONMENTAL RESEARCH
(2021)
Article
Environmental Sciences
Q. Guillemoto, G. Picot-Colbeaux, D. Valdes, N. Devau, F. A. Mathurin, M. Pettenati, W. Kloppmann, J. -m. Mouchel
Summary: This study evaluates the effectiveness of the Agon-Coutainville SAT system for the removal of TrOCs and analyzes the exchange and mixing processes between groundwater and wastewater. The findings provide insights for the remediation of TrOCs.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Chemistry, Physical
Xiaodong Li, Shanzhe Ke, XiuXiu Feng, Xiaoyan Zhao, Wenxiao Zhang, Junfeng Fang
Summary: By introducing the multifunctional additive DPPA, ion migration in perovskite solar cells can be effectively inhibited, leading to increased efficiency and stability.
JOURNAL OF MATERIALS CHEMISTRY A
(2021)
Article
Geosciences, Multidisciplinary
Jingyi Wang, Fujie Jiang, Qinhong Hu, Chunlin Zhang, Xiaoguang Yang, Wuling Mo, Xirong Wang, Zhenguo Qi
Summary: The central and eastern Paleozoic Carboniferous Benxi Formation in the Ordos Basin, China's largest gas-producing area, poses challenges for exploration due to extreme diagenesis, complex pore structure, and strong heterogeneity. This study conducted qualitative and quantitative analyses to investigate the development and controlling factors of secondary porosity in the formation. The findings provide a basis for predicting favorable reservoirs in the tight sandstones of the Benxi Formation in the Ordos Basin.
MARINE AND PETROLEUM GEOLOGY
(2023)
Article
Geosciences, Multidisciplinary
Jianjiang Wen, Mengdi Sun, Ziang Cui, Jingyi Wang, Heng Zhang, Zhongxian Cai, Mehdi Ostadhassan, Qi Wang, Qinhong Hu
Summary: In this study, the oil charging characteristics and pore structure of the Lower Cambrian Xiaoerbulake Formation in the Tarim Basin were investigated. The results showed that the microbial dolomites had the highest oil charging force and smallest pore throat threshold, making them the most favorable lithofacies for the accumulation and migration of oil and gas.
MARINE AND PETROLEUM GEOLOGY
(2023)
Article
Geosciences, Multidisciplinary
Yuantao Gu, Quan Wan, Xiaoxia Li, Tao Han, Shuguang Yang, Qinhong Hu
Summary: This study investigates the variation of organic matter occurrence and the relationship between petroleum generation of organic matter and transformation of clay minerals in nanocomposites as a function of maturity. The results show that most shale samples are organic-rich and represent a thermal evolutionary process from oil-window mature to overmature. The structural investigation of nanocomposites reveals that organic carbon dominates the occurrence of organic matter and extends the traditional view of organic matter-clay association. The results contribute to a better understanding of diagenesis and organic-inorganic interactions in organic-rich shales.
JOURNAL OF EARTH SCIENCE
(2023)
Article
Engineering, Civil
Xiaoqing Yuan, Qinhong Hu, Xiang Lin, Chen Zhao, Qiming Wang, Yukio Tachi, Yuta Fukatsu, Shoichiro Hamamoto, Marja Siitari-Kauppi, Xiaodong Li
Summary: The effects of heterogeneity on mass transport in different rock samples were studied. It was found that as particle size decreases, the effective porosity of heterogeneous rocks increases, while the porosity of homogeneous rocks remains constant. Additionally, different rocks exhibit different affinities for tracers.
JOURNAL OF HYDROLOGY
(2023)
Article
Geosciences, Multidisciplinary
Kefei Chen, Rui Yang, Hanyong Bao, Tian Dong, Aoqi Jia, Qinhong Hu, Xiaowen Guo, Sheng He
Summary: In this study, the influence of paleoenvironmental conditions and diagenetic pathways on pore development of the Wufeng and Longmaxi Formations in shale is investigated. The results show that paleoenvironmental conditions determine the composition and content of minerals and organic matter in shale. Different shale lithofacies undergo various diagenetic events and evolution pathways, which ultimately affect pore generation and evaluation. The content of pores varies in different lithofacies, with siliceous shale containing abundant biogenic authigenic quartz and organic matter, mixed shale having fewer residual pores due to compaction, and clay-rich shale experiencing deformation and loss of primary pores. The amount of organic matter pores gradually decreases from the bottom of the formations to the upper section.
MARINE AND PETROLEUM GEOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Qiming Wang, Qinhong Hu, Chen Zhao, Yang Wang, Tao Zhang, Jan Ilavsky, Mengdi Sun, Linhao Zhang, Yi Shu
Summary: Laboratory-scale analysis of natural rocks provides information about their physical characteristics, such as density, porosity, and pore structure. This study investigated the effect of sample size on the petrophysical properties of different rock samples using various experimental techniques. The results suggest that the sample size influences the pore structure changes during crushing and the fluid-to-pore connectivity.
Article
Engineering, Chemical
Xianglong Fang, Yidong Cai, Qinhong Hu, Ping Gao, Dameng Liu, Yujing Qian
Summary: Exploring the relationship between formation pressure and shale pore evolution is crucial for the development of marine shale gas accumulation theory. Experimental investigations on lowly matured marine shale were carried out to characterize the effects of formation pressure on shale pore morphology and hydrocarbon expulsion. The findings suggest that formation pressure promotes the expulsion of hydrocarbons, changes shale pore morphology, and improves pore connectivity. These results provide valuable insights into understanding the evolution of shale pore structures under different pressure conditions.
Article
Energy & Fuels
Jingchao Luo, Jianping Yan, Majia Zheng, Wei Guo, Guanghai Zhong, Min Wang, Bin Geng, Qinhong Hu
Summary: This study investigates the influence of mineral composition and lamination on the occurrence and mechanical properties of shale in the Luzhou area of the Sichuan Basin. The results show that the quartz content has a positive correlation with Young's modulus, and the laminated layer enhances shale anisotropy and fracture trapping abilities. The study contributes to a better understanding of the rock mechanics and fracture evaluation of shale reservoirs.
Article
Energy & Fuels
Jingyi Wang, Qinhong Hu, Zhongxian Cai, Xiaohui Sun, Mengdi Sun, Cong Zhang, Wei Wei, Ziang Cui
Summary: A study on 12 lacustrine shale samples from Lucaogou Formation reveals that the mineral compositions and organic matter abundance influence the pore system development and retained oil distribution. The samples are dominated by mineral-related slit-shaped pores with a small amount of organic matter-hosted pores. Feldspar dissolution leads to abundant dissolved pores, improving reservoir properties. Quartz overgrowth negatively affects pore structure, while carbonates undergo dissolution and cementation processes. Mineral sizes are positively related to pore diameter, and source-proximal sedimentary microfacies with coarse components are more favorable for oil exploration. Retained oil primarily occurs as a thin film in pores with diameters of 100-1500 nm, while oil in smaller pores is adsorbed. The retained oil volume is affected by organic matter abundance, storage type, and material source-reservoir configurations.
Article
Geosciences, Multidisciplinary
Xiaoqing Yuan, Qinhong Hu, Furong Wang, Xiaowen Guo, Hua Huang
Summary: This study systematically describes the diagenetic processes, porosity evolution, and diagenetic facies of sandstone reservoirs in the Eocene Lower Xingouzui Formation (LXF) in two depressions in the Jianghan Basin. Petrographic, mineralogical, geochemical, and petrophysical analyses were applied to the samples obtained from the Qianjiang and Jiangling sags. The study revealed multiple phases of diagenesis and the development of abnormally high porosity and permeability zones in both sags.
MARINE AND PETROLEUM GEOLOGY
(2023)
Article
Geosciences, Multidisciplinary
Mengdi Sun, Xianggang Duan, Qing Liu, Tomasz P. Blach, Mehdi Ostadhassan, Bo Liu, Yeping Ji, Qinhong Hu, Zhejun Pan
Summary: This study investigates the pore-fracture connectivity in overmature marine shale samples using small-angle neutron scattering (SANS), repeated mercury intrusion capillary pressure (MICP), and field emission scanning electron microscopy (FE-SEM) imaging. The results show that sealing of the pore system by brittle minerals reduces overall pore connectivity within the shale matrix. The combination of MICP measurements and FE-SEM imaging provides a new evaluation method for pore-fracture connectivity. The study also reveals that a small fraction of pores in overmature shales are accessible to methane, and under high pressure, the density of methane in small pore spaces is greater than that of an ideal gas and forms nanoscale methane clusters.
MARINE AND PETROLEUM GEOLOGY
(2023)
Article
Geosciences, Multidisciplinary
Longhui Bai, Bo Liu, Xiaofei Fu, Qinhong Hu, Qiuli Huo, Liu Wang, Qiming Wang, Li Fu, Mehdi Ostadhassan
Summary: An accurate assessment of shale oil mobility is essential for cost-effective exploitation. This study presents a method to evaluate shale oil mobility by integrating pore structure and oil states distributions. The relationships between organic extracts and oil states were determined, and the T2-cutoff values were used to indicate the pore size ranges of different oil states. The findings can be used as a reference for evaluating shale oil potential and prospectivity in other regions.
GEOSCIENCE FRONTIERS
(2023)
Article
Energy & Fuels
Binqian Yin, Qinhong Hu, Yingying Zhu, Keren Zhou
Summary: In analyzing geological processes, segmenting SEM images of geological samples is crucial but time-consuming. To automate the segmentation, supervised learning approaches have been used, but they require expensive and error-prone label preparation. In this work, we investigated unsupervised and semisupervised approaches for fine-grained shale and developed a semi-supervised learning model, SU-Net, which demonstrated higher accuracy and faster training than existing models.
GEOENERGY SCIENCE AND ENGINEERING
(2023)
Article
Energy & Fuels
Shuling Xiong, Manfei Chen, Hui Yu, Weihang Zhang, Qinhong Hu, Sheng He, Rui Yang
Summary: This study investigates the adsorption behavior and mechanisms of water vapor and nitrogen on four typical clay minerals. The results show that pores with a diameter smaller than 10 nm contribute significantly to water uptake. The FHH model is the most optimal for describing and predicting water vapor adsorption isotherms on the clay minerals. The findings provide important insights for determining water distribution in shale reservoirs and evaluating shale gas content.
GAS SCIENCE AND ENGINEERING
(2023)
Article
Energy & Fuels
Qinhong Hu, Qiming Wang, Tao Zhang, Chen Zhao, Khawaja Hasnain Iltaf, Shiqi Liu, Yuta Fukatsu
Summary: This study evaluates the petrophysical properties of representative geological rocks for the effective utilization and long-term storage of carbon dioxide. Laboratory tests were performed on various rock samples, showing a disparity in properties between rocks selected for CO2 storage and potential caprocks. The understanding of pore structure and fracture contribution is critical for reliable CO2 storage and utilization. The study also highlights the controlling influence of grain size distribution and geological processes on pore attributes for different rock types.