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Machine Learning-Assisted Three-Dimensional Sensing Array for Simultaneous Discrimination and Quantification of Hypochlorite and Hydroxyl Radicals

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SSRN 2022年

作者： Yu, Long Li, Xin Su, Pengchen Sun, Mingtai Yuan, Chao Wang, Suhua MOE Key Laboratory of Resources and Environmental System Optimization College of Environmental Science and Engineering North China Electric Power University Beijing102206 China Guangdong Provincial Key Laboratory of Petrochemical Pollution Process and Control School of Environmental Science and Engineering Guangdong University of Petrochemical Technology Guangdong Maoming525000 China

It is challenging to realize the direct recognition of various reactive oxygen species (ROS) because of the oxidation ability. Herein, we reported a new molecular fluorescent probe and employed machine learning methods to develop a three-dimensional sensor array for the simultaneous and rapid identification of hypochlorite and hydroxyl radical with one fluorescent probe, on the basis of its responsive differentiation of spectroscopic properties including fluorescence and UV-vis absorption. The raw array signals were first transformed into a synthetic index by principal component analysis (PCA) for the selective quantitative analysis of hypochlorite and the identification of hydroxyl radicals. Then, hierarchical clustering analysis (HCA) and density clustering analysis (DCA) were used to establish a classifier to correlate the data structure and similarity between various samples. This method quickly grouped different concentrations of hypochlorite, and accurately identified hypochlorite and hydroxyl radical. Finally, by comparing the three-dimensional fluorescence differential spectroscopic data of five kinds of reactive oxygen species, the specific changes of hypochlorite and hydroxyl radical were apparently observed and distinguished from other reactive oxygen species. The method opens up a new way for the accurate identification of environmental pollutants with highly similar properties. © 2022, The Authors. All rights reserved.

关键词： Principal component analysis

In Situ Low-Temperature Pyrolysis Fabrication Type Ii Bioio3/Bi4o5i2 Heterostructures with Enhanced Visible-Light-Driven Photooxidation Activity

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SSRN 2022年

作者： Wen, Tao Ma, Ran Zhang, Sai Guo, Sisheng Jiang, Zheng Wang, Jian Sun, Mingtai Wang, Suhua Wang, Xiangke MOE Key Laboratory of Resources and Environmental Systems Optimization College of Environment and Chemical Engineering North China Electric Power University Beijing102206 China Guangdong Provincial Key Laboratory of Petrochemical Pollution Process and Control School of Environmental Science and Engineering Guangdong University of Petrochemical Technology Guangdong Maoming525000 China

Novel visible-light-driven heterostructure semiconductors are considered as promising photocatalysts for the elimination of environmental organic pollutants. Herein, a solvent-assisted low-temperature in situ calcination strategy was developed to fabricate type II BiOIO3/Bi4O5I2 heterojunction using BiOIO3 as self-sacrificed template. The phase transition temperature of BiOIO3 was reduced under solvent-assisted operating conditions. By controlling the elevated temperature from 200 to 300 oC, an in situ stepwise pyrolysis reaction occurred during the calcination process, which was described as BiOIO3→BiOIO3/Bi4O5I2→Bi4O5I2. The light absorption edge of different samples significantly red shifted from 385 to 632 nm with the increase of calcination temperature. Meanwhile, two interlocked interface lattice fringes were identified in high resolution transmission electron microscope (HRTEM) of BiOIO3/Bi4O5I2-250, confirming the formation of BiOIO3/Bi4O5I2 heterojunction. The as-obtained BiOIO3/Bi4O5I2 heterojunction demonstrated the optimal photodegradation performance, which brought about 99.4% of bisphenol A (BPA) degraded within 30 min visible light (λ > 420 nm) illumination. Besides, after 5 repeated cycles, the photoactivity of BiOIO3/Bi4O5I2 heterojunction still maintained 91.5%, unfolding its high photostability. The superior photoreactivity of BiOIO3/Bi4O5I2 nanosheets was assigned to the formation of well matched type II heterojunction, which enhanced the separation and migration of photoinduced charge carriers. Superoxide radical (O2·-) and hole (h+) are dominant reactive species in this photodegradation system. Based on quenching experiments and electron paramagnetic resonance (ESR) results, the possible type II heterojunction mechanism of photodegradation process was proposed. This work affords an innovative method for design and construction of type II composites toward sustainable water purification. © 2022, The Authors. All rights reserved.

关键词： Heterojunctions

Pyrolyzing Coal Blended with Ash: The Fate and Impacts of Caso4

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SSRN 2022年

作者： Jia, Xin Lu, Haiyang Wang, Qinhui Hui, Yu Zhang, Yuhui Han, Zhennan Wang, Chao Song, Xingfei Xu, Guangwen Key Laboratory of Resources Chemicals and Materials Shenyang University of Chemical Technology Ministry of Education Shenyang110142 China State Key Laboratory of Clean Energy Utilization Institute for Thermal Power Engineering Zhejiang University Hangzhou310027 China Shenyang Academy of Environmental Sciences Liaoning Provincial Key Laboratory of Atmospheric Environmental Pollution and Control Shenyang110167 China

Pyrolysis of Xiaolongtan lignite with and without CaSO4-containing coal ash premixed is performed at 500–850℃ in an infrared heating reactor to clarify the fateful roles of CaSO4 in causing effects of ash on pyrolysis. The presence of coal ash rich in CaSO4 significantly raises the yields of CO2, pyrolysis gas and water but decreases the H2 yield at temperatures above 750 oC. Analysis of the ash after pyrolysis clarifies that CaSO4 is mainly reduced to CaS at those temperatures, and other ash components such as Fe2O3 change little. Similar decreases in H2 and CO and increases in CO2 and water are also identified in testing the reactions between simulating pyrolytic gas and coal ash, and the mechanism is thought to be 4H2 + CaSO4 → CaS + 4H2O and 4CO + CaSO4 → CaS + 4CO2. Studying the reactions between char and ash further elucidates that carbon is oxidized by CaSO4 to form CO2 through C + CaSO4 → CaS + 2CO2. © 2022, The Authors. All rights reserved.

关键词： Pyrolysis

Four-Year Population Exposure Study: Implications for Priority-controlled E-Waste Pollutants and Characteristic Biomarkers of E-Waste pollution

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SSRN 2022年

作者： Kuang, Hongxuan Li, Yonghong Li, Leizi Ma, Shengtao An, Taicheng Fan, Ruifang Guangzhou Key Laboratory of Subtropical Biodiversity and Biomonitoring Guangdong Provincial Engineering Technology Research Center for Drug and Food Biological Resources Processing and Comprehensive Utilization School of Life Sciences South China Normal University Guangzhou510631 China Guangzhou Key Laboratory of Environmental Catalysis and Pollution Control Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control School of Environmental Science and Engineering Institute of Environmental Health and Pollution Control Guangdong University of Technology Guangzhou510006 China State Environmental Protection Key Laboratory of Environmental Pollution Health Risk Assessment Ministry of Ecology and Environment South China Institute of Environmental Sciences Guangzhou510655 China

E-waste pollution has emerged as a significant environmental concern, necessitating the establishment of priority-controlled e-waste pollutants and useful biomarkers that facilitate the rapid assessment of the impact of e-waste pollution on human exposure risks. Therefore, we performed a longitudinal population exposure monitoring research in an e-waste recycling area of China after e-waste control. The urinary levels of oxidative stress damage and typical pollutants emitted during e-waste recycling, including heavy metals, polycyclic aromatic hydrocarbons (PAHs), volatile organic compounds (VOCs), and polychlorinated diphenyl ethers (PCDE), were continuously monitored in populations (including 275 children and 485 adults) from 2016 to 2019 using high-performance liquid chromatography-tandem mass spectrometry. After e-waste control, oxidative DNA damage levels in children decreased significantly, suggesting that scientific recycling of e-waste significantly reduced the human health burden. Although the decline of pollutants exposure level was more obvious in children than in adults, children still had higher burdens of heavy metals, VOCs and PCDE 28 exposure and oxidative stress damage than adults. Urinary tin, 1-hydroxypyrene, s -phenylmercapturic acid, and 2′-hydroxy-2,4,4′-trichlorodiphenyl ether decreased significantly and monotonically over the years were identified as the potential biomarkers of e-waste pollution. Based on the associations between pollutant exposure and oxidative stress damage levels, the top six harmful pollutants were identified as toluene, molybdenum, copper, pyrene, naphthalene, and nickel, which should be listed as the priority-controlled e-waste pollutants. Most noteworthy, toluene and naphthalene induced oxidative lipid and DNA damage without threshold, respectively. Despite the implementation of four-year e-waste management, the levels of priority-controlled pollutants in 5.26% to 92.9% of local populations were still higher than the c

关键词： Electronic Waste

Neural Network Establishes Co-Occurrence Links between Transformation Products of the Contaminant and the Soil Microbiome

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SSRN 2023年

作者： Xiang, Yuhui Yu, Yansong Wang, Jiahui Li, Weiwei Rong, Yu Lin, Haibo Chen, Zhongbing Qian, Yiguang Han, Xiaole Sun, Jie Yang, Yuyi Chen, Liang Chen, Ke Key Laboratory of Resources Conversion and Pollution Control of the State Ethnic Affairs Commission College of Resources and Environmental Science South-Central Minzu University Wuhan430074 China Hubei Key Laboratory of Pollution Damage Assessment and Environmental Health Risk Prevention and Control Hubei Provincial Academy of Eco-Environmental Sciences Wuhan430074 China Department of Applied Ecology Faculty of Environmental Sciences Czech University of Life Sciences Prague Praha16500 Czech Republic Research Center for Environmental Ecology and Engineering School of Environmental Ecology and Biological Engineering Wuhan Institute of Technology Wuhan430205 China Key Laboratory of Aquatic Botany and Watershed Ecology Chinese Academy of Sciences Wuhan Botanical Garden Wuhan430074 China

It is still a challenge to establish reliable links between transformation products (TPs) of the contaminant and the microbiome. That is because the discovery of TPs still requires a sophisticated experiment regime. Additionally, widely used linear approaches, for instance, Pearson's and Spearman's correlations, may face challenges to deal with this issue. It is due to that 16S rRNA gene amplicon sequencing and mass spectrometry datasets are compositional, which may confound statistical inference. In this study, we combined the use of 2H-labeled Stable Isotope-Assisted Metabolomics (2H-SIAM), and a neural network-based algorithm, MMvec, to discover links between TPs and microbiome. Links between degraders and degradation products were well discussed, and other links provided valuable information. A metagenomic study provided indirect evidence for the established links. Identification of pyrene degraders from soils, and DNA-SIP (DNA-based stable isotope probing) study were further conducted, both of which provided direct evidence for the established links. The comparison among different approaches, for instance, Pearson’s and Spearman’s correlations, further confirms the performance of the provided strategy. In the end, the unique features of the combined use of 2H-SIAM and MMvec were summarized. © 2023, The Authors. All rights reserved.

关键词： Mass spectrometry

Highly efficient desorption and reuse of fatty acid collectors adsorbed on mineral surface: A case study of scheelite

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International Journal of Minerals,Metallurgy and Materials 2025年第06期32卷 1286-1296页

作者： Liming Tao Wangni Wu Zihan Zhao Ruihua Fan Jianjun Wang Zhiyong Gao School of Minerals Processing and Bioengineering Key Laboratory of Hunan Province for Clean and Efficient Utilization of Strategic Calcium-containing Mineral ResourcesHunan International Joint Research Center for Efficient and Clean Utilization of Critical Metal Mineral ResourcesEngineering Research Center of Ministry of Education for Carbon Emission Reduction in Metal Resource Exploitation and UtilizationCentral South University Institute of Multipurpose Utilization of Mineral Resource Chinese Academy of Geological Sciences The Key Laboratory of Mineral Metallurgical Resources Utilization and Pollution Control Ministry of Ecology and EnvironmentWuhan University of Science and Technology

Flotation is the most common method to recover valuable minerals by selective adsorption of collectors on target mineral surfaces. However, in subsequent hydrometallurgy of mineral flotation concentrates, the adsorbed collectors must be desorbed since it can adversely affect the efficiency of metallurgical process and produce wastewater. ZL, as a fatty acid mixture, is a typical industrially used collector for scheelite flotation in China. Sodium oleate(NaOL) has similar fatty acid group as ZL. In this study, the desorption behavior of NaOL/ZL from scheelite surface by a physical method of stirring at a low temperature was investigated. NaOL desorption tests of single mineral showed that a desorption rate of 77.75% for NaOL from scheelite surface into pulp was achieved in a stirring speed of2500 r/min at 5°C in a neutral environment. Under the above desorption condition, in the pulp containing desorbed collector by adding extra 30% normal NaOL dosage, the scheelite recovery reached about 95% in the single mineral flotation test. Desorption and reuse of ZL collector for the flotation of real scheelite ore showed only a 75% normal dosage of ZL could produce a qualified rough concentrate. The atomic force microscope(AFM) tests showed that after desorption treatment of low temperature and strong stirring, the dense strip-like structure of NaOL on the scheelite surface was destroyed to be speck-like. Molecular dynamics simulations(MDS) demonstrated that the adsorption energy between NaOL and scheelite surface was more negative at 25°C(-13.39 kcal/mol) than at 5°C(-11.50 kcal/mol) in a neutral pH, indicating that a low temperature was beneficial for the desorption of collector from mineral surface. Due to its simplicity and economy, the method we proposed of desorption of collector from mineral surface and its reuse for flotation has a great potential for industrial application.

关键词： desorption reuse flotation scheelite concentrate fatty acid collector

Experimental and Theoretical Identifications of Durable Fe–Nx Configurations Embedded in Graphitic Carbon Nitride for Uranium Photoreduction

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SSRN 2022年

作者： Wen, Tao Hong, Jiahui Ma, Ran Wu, Yunchao Liu, Yang Zhang, Sai Wang, Suhua Wang, Xiangke Ai, Yuejie MOE Key Laboratory of Resources an d Environmental Systems Optimization College of Environmental Science and Engineering North China Electric Power University Beijing102206 China Guangdong Provincial Key Laboratory of Petrochemical Pollution Process and Control School of Environmental Science and Engineering Guangdong University of Petrochemical Technology Guangdong Maoming525000 China

Uranium extraction from seawater has attracted increasing attentions for nuclear raw material to support the sustainable development of nuclear power plants. However, it is still a grand challenge to overcome the high salinity background and ultra-low uranyl concentration. Herein, we successfully achieved Fe-Nx configurations embedded in graphitic carbon nitride (FeNx/g-C3N4) through one-step pyrolysis strategy. Our density function theory (DFT) calculations reveal that the site-isolated FeNx centers are the predominant binding sites for U(VI) species, and visible-light photoexcitation can effectively facilitate the electron escaping from FeNx/g-C3N4 surface relative to pure g-C3N4, which is consequently favorable for electron transfer in the photoreduction conversion of U(VI) to U(IV). Consistent with the theoretical results, the obtained FeNx/g-C3N4 (w(Fe-MOFs): w(g-C3N4) = 2:1) delivers remarkably higher reduction activity with the conversion efficiency of 99% and rate constant of 0.091 min-1, almost 9.1 and 12.5 times faster than those of g-C3N4 and TiO2 catalysts, respectively. The results showed that the introduction of FeNx could effectively activate g-C3N4 catalysts for significantly broadening the absorption range of g-C3N4 to visible light, inhibiting recombination of the photogenerated e--h+ and further facilitating the reduction of U(VI). It is worthwhile to mention that FeNx/gC3N4 maintains a high level for the extraction of uranium from seawater, endowing the metal-N configurations embedded g-C3N4 as a kind of promising candidate for the sustainable conversion of radionuclides. © 2022, The Authors. All rights reserved.

关键词： Density functional theory

Phenomic and metabolomic responses of roots to cadmium reveal contrasting resistance strategies in two rice cultivars(Oryza sativa L.)

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Soil Ecology Letters 2021年第3期3卷 220-229页

作者： Chong Liu Mo-ming Lan Er-kai He Ai-jun Yao Guo-bao Wang Ye-tao Tang Rong-liang Qiu School of Environmental Science and Engineering Guangdong Provincial Key Laboratory for Environmental Pollution Control and Remediation TechnologySun Yat-sen UniversityGuangzhou 510006China Guangdong Provincial Engineering Research Center for Heavy Metal Contaminated Soil Remediation Sun Yat-sen UniversityGuangzhou 510006China School of Geography and Planning Sun Yat-sen UniversityGuangzhou 510275China Guangdong Laboratory for Lingnan Modern Agriculture College of Natural Resources and EnvironmentSouth China Agricultural UniversityGuangzhou 510642China

To cope with heavy metal stress,plant root systems undergo root structure modification and release of multifarious *** of the resistance strategies to heavy metals mediated by the root system is crucial to comprehend the resistance mechanisms of *** two rice cultivars with contrasting grain cadmium(Cd)accumulation traits were selected and the responses of their root systems to Cd stress were evaluated by morphological and metabolomics *** phenomic and metabolomic responses of the root system varied between the two cultivars under Cd *** low-Cd accumulation rice cultivar(TY816)had a more highly developed root system that coped with Cd stress(10μM)by maintaining high root activity,while the root cells of the high-Cd accumulation cultivar(JY841)lost viability due to excessive Cd ***816 upregulated lipids and fatty acids to reduce Cd uptake,whereas JY841 upregulated phenylethanoid glycosides to cope with Cd-induced oxidative *** combination of metabolomics and phenomics revealed that rice roots employ multiple strategies to increase their tolerance of Cd-induced oxidative *** capacities to shape the root system architecture and reprogram root exudate metabolites may contribute to the contrasting Cd accumulation abilities between JY841 and TY816.

关键词： Root morphology Exudates Cadmium Rhizosphere Metabolite

Emerging contaminants:A One Health perspective

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The Innovation 2024年第4期5卷 140-170,139页

作者： Fang Wang Leilei Xiang Kelvin Sze-Yin Leung Martin Elsner Ying Zhang Yuming Guo Bo Pan Hongwen Sun Taicheng An Guangguo Ying Bryan WBrooks Deyi Hou Damian EHelbling Jianqiang Sun Hao Qiu Timothy MVogel Wei Zhang Yanzheng Gao Myrna JSimpson Yi Luo Scott XChang Guanyong Su Bryan MWong Tzung-May Fu Dong Zhu Karl JJobst Chengjun Ge Frederic Coulon Jean Damascene Harindintwali Xiankui Zeng Haijun Wang Yuhao Fu Zhong Wei Rainer Lohmann Changer Chen Yang Song Concepcion Sanchez-Cid Yu Wang Ali El-Naggar Yiming Yao Yanran Huang Japhet Cheuk-Fung Law Chenggang Gu Huizhong Shen Yanpeng Gao Chao Qin Hao Li Tong Zhang Natàlia Corcoll Min Liu Daniel SAlessi Hui Li Kristian KBrandt Yolanda Pico Cheng Gu Jianhua Guo Jianqiang Su Philippe Corvini Mao Ye Teresa Rocha-Santos Huan He Yi Yang Meiping Tong Weina Zhang Fidèle Suanon Ferdi Brahushi Zhenyu Wang Syed AHashsham Marko Virta Qingbin Yuan Gaofei Jiang Louis A.Tremblay Qingwei Bu Jichun Wu Willie Peijnenburg Edward Topp Xinde Cao Xin Jiang Minghui Zheng Taolin Zhang Yongming Luo Lizhong Zhu Xiangdong Li DamiàBarceló Jianmin Chen Baoshan Xing Wulf Amelung Zongwei Cai Ravi Naidu Qirong Shen Janusz Pawliszyn Yong-guan Zhu Andreas Schaeffer Matthias C.Rillig Fengchang Wu Gang Yu James M.Tiedje State Key Laboratory of Soil and Sustainable Agriculture Institute of Soil ScienceChinese Academy of SciencesNanjing 210008China University of Chinese Academy of Sciences Beijing 100049China Department of Chemistry Hong Kong Baptist UniversityHong KongChina HKBU Institute of Research and Continuing Education Shenzhen Virtual University ParkShenzhenChina Technical University of Munich TUM School of Natural SciencesInstitute of Hydrochemistry85748 GarchingGermany School of Resources&Environment Northeast Agricultural UniversityHarbin 150030China Climate Air Quality Research UnitSchool of Public Health and Preventive MedicineMonash UniversityMelbourneVICAustralia Faculty of Environmental Science&Engineering Kunming University of Science&TechnologyKunming 650500China Ministry of Education Key Laboratory of Pollution Processes and Environmental Criteria College of Environmental Science and EngineeringNankai UniversityTianjin 300350China Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control School of Environmental Science and EngineeringInstitute of Environmental Health and Pollution ControlGuangdong University of TechnologyGuangzhou 510006China Ministry of Education Key Laboratory of Environmental Theoretical Chemistry South China Normal UniversityGuangzhouGuangdong 510006China Department of Environmental Science Baylor UniversityWacoTXUSA Center for Reservoir and Aquatic Systems Research(CRASR) Baylor UniversityWacoTXUSA School of Environment Tsinghua UniversityBeijing 100084China School of Civil and Environmental Engineering Cornell UniversityIthacaNY 14853USA Key Laboratory of Microbial Technology for Industrial Pollution Control of Zhejiang Province Zhejiang University of TechnologyHangzhou 310014China School of Environmental Science and Engineering Shanghai Jiao Tong UniversityShanghai 200240China Laboratoire d’Ecologie Microbienne Universite Claude Bernard Lyon 1UMR CNRS 5557UMR INRAE 1418VetAgro Sup69622 VilleurbanneFrance Department of Pla

Environmental pollution is escalating due to rapid global development that often prioritizes human needs over planetary *** global efforts to mitigate legacy pollutants,the continuous introduction of new substances remains a major threat to both people and the *** response,global initiatives are focusing on risk assessment and regulation of emerging contaminants,as demonstrated by the ongoing efforts to establish the UN’s Intergovernmental Science-Policy Panel on Chemicals,Waste,and pollution *** review identifies the sources and impacts of emerging contaminants on planetary health,emphasizing the importance of adopting a One Health *** for monitoring and addressing these pollutants are discussed,underscoring the need for robust and socially equitable environmental policies at both regional and international *** actions are needed to transition toward sustainable pollution management practices to safeguard our planet for future generations.

关键词： pollution planet contaminants