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A new method to determine composition of sphalerite without secondary pollution based on CIELAB color space

SusMat 2023年第5期3卷 671-681页

作者： Yong Liu Ning Duan Linhua Jiang Hongping He Han Cheng Jiaqi Liao Yanli Xu Wen Cheng Ying Chen Guangbin Zhu Fuyuan Xu School of Materials Science and Engineering Anhui University of Science&TechnologyHuainanAnhuiChina State Key Laboratory of Pollution Control and Resources Reuse College of Environmental Science and EngineeringTongji UniversityShanghaiChina Shanghai Institute of Pollution Control and Ecological Security ShanghaiChina College of Chemistry and Environmental Engineering Shenzhen UniversityShenzhenChina School of Environmental Science and Engineering Tianjin UniversityTianjinChina

Currently,most of the methods formineral materials analysis generate secondary pollution,which is detrimental to human *** instance,traditionalmethods for sphalerite analysis in the zinc(Zn)smelting industry including chemical titration,atomic absorption spectrometry,and inductively coupled atomic emission *** indicators and toxic heavy metals are used in the analytical processes,causing severe *** some methods,liquid is transformed into gaseous plasma,which is more dangerous to human *** to large quantities of sphalerite being used,secondary pollution cannot be *** study proposes a green analysis method for the detection of sphalerite based on colorimetry,which does not generate secondary *** results show that the strong substitution ability of iron(Fe)for Zn contributes to their inverse correlation in *** lattice parameters decrease with the increasing Fe content,resulting in a darker ***,key colorimetry parameters of L*,a*,and b*show clear linear correlations with the Zn and Fe *** with traditional approaches,this new method is environmental friendly with high sensitivity and *** relative error and relative standard deviation were less than 10%and 5%,*** study provides a significant reference for nonpollution determination of other mineral materials.

关键词： analytical method for sphalerite CIELAB colorimetry no secondary pollution original state detection

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The high catalytic activity and strong stability of 3%Fe/AC catalysts for catalytic wet peroxide oxidation of m-cresol: The role of surface functional groups and FeO_(x) particles

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Chinese Journal of Chemical Engineering 2022年第4期35卷 105-114页

作者： Peiwei Han Chunhua Xu Yamin Wang Chenglin Sun Huangzhao Wei Haibo Jin Ying Zhao Lei Ma Beijing Key Laboratory of Fuels Cleaning and Advanced Catalytic Emission Reduction Technology/College of Chemical Engineering Beijing Institute of Petrochemical TechnologyBeijing 102617China Shandong Key Laboratory of Water Pollution Control and Resource Reuse School of Environmental Science and EngineeringShandong UniversityQingdao 266237China Dalian Institute of Chemical Physics Chinese Academy of SciencesDalian 116023China

FeO;supported on activated carbon(AC) has been shown to be an ideal catalyst for catalytic wet peroxide oxidation(CWPO) due to its high CWPO reaction activity and stability. Although there have been some studies on the mechanism of Fe/AC catalysis in CWPO, the specific contribution of each component(surface oxygen groups and FeOxon AC) inside an Fe/AC catalyst and their corresponding reaction mechanism remain unclear, and the reaction stability of CWPO catalysts has rarely been discussed. Then the optimal CWPO catalyst in our laboratory, 3%Fe/AC, was selected.(1) By removing certain components on the AC through heat treatment, its contribution to the reaction and the corresponding reaction mechanism were investigated. With the aid of temperature-programmed desorption–mass spectrometry(TPD–MS) and the CWPO reaction, the normalized catalytic contributions of components were shown to be: 37.3%(carboxylic groups), 5.3%(anhydride), 19.3%(ether/hydroxyl),-71.4%(carbonyl groups) and 100%(FeOx),respectively. DFT calculation and EPR analysis confirmed that carboxylic groups and Fe_(2)O_(3) are able to activate the H_(2)O_(2) to generate·OH.(2) The catalysts at were characterized at different reaction times(0 h, 450 h, 900 h, 1350 h, and 1800 h) by TPD–MS and M?ssbauer spectroscopy. Results suggested that the number of carboxylic goups gradually increased and the size of paramagnetic Fe_(2)O_(3) particle crystallites gradually increased as the reactions progressed. The occurrence of strong interactions between metal oxides and AC was also confirmed. Due to these effects, the strong stability of 3%Fe/AC was further improved. Therefore, the reasons for the high activity and strong stability of 3%Fe/AC in CWPO were clearly shown. We believe that this work provides an idea of the removal of cresols from wastewater into the introduction to show the potential applications of CWPO.

关键词： Catalytic wet peroxide oxidation Fe/AC catalyst Surface functional groups Reaction mechanism

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Bioaerosolization behavior along sewage sludge biostabilization

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Frontiers of Environmental Science & Engineering 2021年第3期15卷 151-164页

作者： Fan Lu Tianyu Hu Shunyan Wei Liming Shao Pinjing He State Key Laboratory of Pollution Control and Source Reuse Tongji UniversityShanghai 200092China Shanghai Institute of Pollution Control and Ecological Security Shanghai 200092China Institute of Waste Treatment and Reclamation Tongji UniversityShanghai 200092China

Biostabilization is a cost-effective method for the beneficial utilization of sewage ***,during the operation of sludge biostabilization,some microbial species could be released into the atmospheric environment from the solid-phase of sludge easily and present a high risk to human *** study aimed to evaluate the risk of bioaerosol during sludge *** found a total of nine bacterial phyla,one archaeal phylum,and two fungal phyla in the bioaerosol *** them,Proteobacteria,Actinobacteria,Bacteroidetes,and Ascomycota were the dominant *** addition,the bioaerosolization indexes(BI)of prokaryotic phyla and flingal phyla ranged 0-45 and 0-487,*** ilia y Pseudarthrobacter,Pseudomonas,Tremellales spp.,and Fusarium were the preferentially aerosolized microbial genera with maximum bioaerosolization indexes of 19962,10360,1802,3055,and *** bioaerosol concentration during the biostabilization ranged from 160 to 1440 cell/m^(3),and we identified species such as Stenotrophomonas rhizophila and Fusarium graminerum with high bioaerosolization indexes that could be threats to human ***,which belongs to archaeal phyla,had the highest biostabilization index in our *** also found that Pseudarthrobacter was the easiest to aerosolize during the sludge biostabilization process.

关键词： Sludge Composting Bioaerosol Bioaerosolization index High-throughput sequencing 4’,6-diamidino-2-phenylindole(DAPI)

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Green innovation unleashed:Harnessing tungsten-based nanomaterials for catalyzing solar-driven carbon dioxide conversion

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Chinese Chemical Letters 2025年第2期36卷 108-117页

作者： Weidan Meng Yanbo Zhou Yi Zhou State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process East China University of Science and TechnologyShanghai 200237China National Engineering Research Center of Industrial Wastewater Detoxication and Resource Recovery East China University of Science and TechnologyShanghai 200237China Shanghai Engineering Research Center for Multi-media Environmental Catalysis and Resource Utilization East China University of Science and TechnologyShanghai 200237China Shanghai Institute of Pollution Control and Ecological Security Shanghai 200092China

Carbon dioxide photocatalytic reduction (CO_(2)-PR) is an efficient method for controlling CO_(2)emissions and generating cleaner energy while mitigating global *** oxides (WxOy) have attracted considerable attention for CO_(2)-PR due to their excellent spectral ***,comprehensive reviews are lacking on the use of WxOyfor CO_(2)-***,this review provides a detailed summary of t research progress made with WxOy-based catalysts in CO_(2)-*** also explains the fundamental principles of CO_(2)-PR and evaluates key performance indicators that affect the activity of WxOy-based photocatalysts,including yield,selectivity,stability,and apparent quantum ***,this review explores opportunities for synthesizing high-performance WxOy-based photocatalysts and highlights their potential for the green preparation of C1/C2 products through CO_(2)-*** innovative strategies aim to address the challenges and pressures associated with energy and environmental issues,particularly by enhancing artificial photosynthesis efficiency.

关键词： Carbon dioxide photoreduction Tungsten-based nanocatalyst Mechanism Performance evaluation Selectivity

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A novel approach to enhance methane production during anaerobic digestion of waste activated sludge by combined addition of trypsin, nano-zero-valent iron and activated carbon

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Chemosphere 2023年第1期341卷 140007页

作者： Lu, Qinyuan Wang, Siyuan Ping, Qian Li, Yongmei State Key Laboratory of Pollution Control and Resource Reuse College of Environmental Science and Engineering Tongji University Shanghai200092 China Shanghai Institute of Pollution Control and Ecological Security Shanghai200092 China

A novel approach with a combination of trypsin, nano-zero-valent iron (NZVI) and activated carbon (AC) was conducted to promote the methane production of waste activated sludge (WAS) during the anaerobic digestion (AD) processes. Results showed that the combined addition of trypsin-NZVI-AC exhibited the synergistic effect during different AD stages. Trypsin mainly facilitated the hydrolysis process and the acetic acid conversion, while NZVI-AC enhanced the substrate metabolism and the electronic transfer to subsequently produce methane. A dose of 1000 mg/L trypsin was optimal to maximize this synergistic effect. Metagenomic analysis showed that trypsin-NZVI-AC addition effectively improved the relative abundance of acetyl-CoA carboxylase, and then strengthened both acetoclastic methanogenesis (M00357) and hydrogenotrophic methanogenesis (M00567). Hydrogenotrophic methanogens such as Methanobacterium, Methanoculleus, and Methanosarcina were greatly enriched with trypsin-NZVI-AC compared with trypsin or NZVI-AC addition. Moreover, electroactive bacteria G. sulfurreducens and G. metallireducens were also enriched by this method to conduct direct interspecies electron transfer among methanogens, leading to the better improvement of methane production. These findings supply a promising way to optimize the enzyme pretreatment technology and elevate the methanogenic efficiency of WAS. © 2023 Elsevier Ltd

关键词： Anaerobic digestion

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Sn-doped induced stable 1T-WSe_(2)nanosheets entrenched on N-doped carbon with extraordinary half/full sodium/potassium storage performance

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Rare Metals 2023年第5期42卷 1557-1569页

作者： Yan-Ru Liu Ze-Wei Lei Ren-Ping Liu Xin-Ye Li Pei-Xun Xiong Yong-Jin Luo Qing-Hua Chen Ming-Deng Wei Ling-Xing Zeng Qing-Rong Qian College of Life Science Fujian Normal UniversityFuzhou350007China Engineering Research Center of Polymer Green Recycling of Ministry of Education College of Environment and ResourcesCollege of Carbon Neutral Modern IndustryFujian Normal UniversityFuzhou350007China Fujian Key Laboratory of Pollution Control and Resource Reuse Fuzhou350007China Fujian Provincial Key Laboratory of Electrochemical Energy Storage Materials Fuzhou UniversityFuzhou350002China Key Laboratory of Advanced Energy Materials Chemistry Ministry of EducationCollege of ChemistryNankai UniversityTianjin300071China

At present,there have been some reports on the application of metal phase selenide(1T-MSe_(2))in the field of energy *** this manuscript,a stable Sn-doped metal phase tungsten selenide(1T-WSe_(2)-Sn)was elaborately fabricated in situ by a simple calcination technique.N-doping was introduced by employing chitosan as precursor and nanoreactor,the Sn-doping induces 1T phase of WSe_(2)and enlarges the layer space to promote the electron/ion transport and structural *** optimized 1T-WSe_(2)-Sn electrode delivers prominent cycling lifespan(285 mAh·g^(-1)at 1.0 A·g^(-1)after 900 cycles)along with decent rate capability when applied as an anode of sodium ion batteries(SIBs).The specific capacity was determined to be of 460 mAh·g^(-1)at 0.1 A·g^(-1)after *** also displays superior capacity of 183 mAh·g^(-1)at0.5 A·g^(-1)for 200 cycles when paired with Na_(3)V_(2)(PO_(4))_(3)*** as the anode for potassium ion batteries(PIBs),it exhibits a satisfactory specific capacity of 345mAh·g^(-1)at 0.1 A·g^(-1)after 50 cycles.

关键词： WSe_(2) Sn-doped Metal phase Sodium/potassium storage

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Nucleophilic Substitution Polymerization-Induced Emission of 1,3-Dicarbonyl Compounds as a Versatile Approach for Aggregation-Induced Emission Type Non-Traditional Intrinsic Luminescence

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Chinese Journal of Chemistry 2023年第14期41卷 1705-1712页

作者： Yu-Jiao Chen Meng-Qin Pu Liang-Tao Wu Xiao-Li Sun Wen-Ming Wan College of Environment and Resources Engineering Research Center of Polymer Green Recycling of Ministry of EducationFujian Key Laboratory of Pollution Control&Resource ReuseFujian Normal UniversityFuzhouFujian350007 China Key Laboratory of Coal to Ethylene Glycol and Its Related Technology State Key Laboratory of Structural ChemistryCenter for Excellence in Molecular SynthesisFujian Institute of Research on the Structure of MatterChinese Academy of Sciences155 Yangqiao Road WestFuzhouFujian350002 China College of Chemistry and Materials Science Fujian Normal UniversityFuzhouFujian350007 China

Nucleophilic substitution reaction and 1,3-dicarbonyl compounds play significant roles in organic chemistry, and non-traditional intrinsic luminescence (NTIL) has become an emerging research area. Here, we demonstrate the successful nucleophilic substitution polymerization of 1,3-dicarbonyl compounds, including acetylacetone, 3,5-heptanedione, methyl acetoacetate, cyclopentane-1,3-dione, 1,3-indandione, 1-phenyl-1,3-butanedione and dibenzoylmethane, where reactive hydrogens at α position of 1,3-dicarbonyl compounds are involved. Through this base catalyzed nucleophilic substitution polycondensation between 1,3-dicarbonyl compounds and α,α’-dibromo xylene, a series of nonconjugated poly(1,3-dicarbonyl)s have been successfully prepared with high yield (up to >99%) under mild conditions. Investigations reveal that this nucleophilic substitution polycondensation exhibits self-accelerating effect and flexible stoichiometry characteristics, which exhibits advantages over traditional polycondensation methods. This polymerization also exhibits intriguing polymerization-induced emission (PIE) characteristics, where nonconjugated poly(1,3-dicarbonyl)s exhibit intriguing chemical structure dependent aggregation-induced emission (AIE) type NTIL. This work therefore expands the monomer, method, chemical structure and property libraries of polymer chemistry, which may cause inspirations to polymerization methodology, PIE, AIE and NTIL.

关键词： Polymerization Luminescence Polymerization-induced emission Ketones Aggregation-induced emission

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Appreciating the role of big data in the modernization of environmental governance

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Frontiers of Engineering Management 2022年第1期9卷 163-169页

作者： Miaomiao LIU Bing ZHANG Jun BI State Key Laboratory of Pollution Control and Resource Reuse School of EnvironmentNanjing UniversityNanjing 210023China

1 Introduction The development of the Internet of Things,drones,and new social media platforms opened up an unprecedented space for the autonomy of human *** promoted the formation of a new form of social relations and social field-cyber society(Jones,1995).The cyber society has already become a digital twin of the actual society and even the *** reconstructed the whole society through impacting social control and social *** this context,it is of great theoretical and practical significance to expand the field of social governance from traditional society to cyber society.

关键词： App promoted media

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Leveraging individual-level data to advance air pollution health risk management

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Frontiers of Engineering Management 2022年第2期9卷 337-342页

作者： Jianxun YANG Wenjing WU Miaomiao LIU Jun BI State Key Laboratory of Pollution Control and Resource Reuse School of EnvironmentNanjing UniversityNanjing 210023China

1 Introduction Environmental health risk management is a systematic engineering task,engaging multiple disciplines from the academic and government *** environmental health risks has become one of the key targets in the United Nations Sustainable Development Goals(SDGs).This target has been translated into public policies at many jurisdictional levels(Yue et al.,2020).To design region-specific and targeted policy initiatives,understanding how environmental health risks are spatially distributed and temporally resolved is fundamental.

关键词： al. pollution aging

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Transformation and drive mechanism of nitrogen functional genes at estuaries in dry and wet seasons

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Chemosphere 2024年 363卷 142938页

作者： Huang, Jian Jin, Changzhou Zhang, Hua Zhao, Bingbing Man, Yacan Zhang, Jiamei Shuai, Zichen School of Environmental and Energy Engineering Anhui Jianzhu University Hefei230601 China Anhui Provincial Key Laboratory of Environmental Pollution Control and Resource Reuse Hefei230601 China Pollution Control and Resource Utilization in Industrial Parks Joint Laboratory of Anhui Province Hefei230601 China

The nitrogen cycle plays a vital role in maintaining ecological health and biodiversity. In aquatic systems, nitrogen transformation genes significantly contribute to biological nitrogen cycling. Although the function of these genes is known to be influenced by environmental factors, there is limited research exploring the relationship between nitrogen transformation genes and environmental factors. Therefore, the correlations, between nitrogen transformation genes and environmental factors, were investigated at the estuaries of Chaohu lake (China) in different seasons. The results showed that the values of temperature, pH, organic compounds, nitrogen, and dissolved oxygen were higher in dry season, whereas the abundance of the genes was lower in dry season. In addition, the abundance of the anaerobic ammoxidation gene was much lower than the nitrification gene and denitrification gene. The results indicated that biological nitrification and denitrification were the primary mechanisms for nitrogen removal at estuaries in different seasons, and the reduction of nitric oxide may be a limiting step in the denitrification process. The Co-occurrence Network and Mantel test indicated that, during the dry season, the temperature was the primary driver of ammonification and nitrification functions, the NO3− and NO2− were the primary drivers of denitrification, and the total nitrogen (TN) and NH4+ were the main drivers of anaerobic ammonia oxidation. During the wet season, the dissolved oxygen was the primary driver of ammonification and nitrification functions, the chemical oxygen demand was the primary driver of denitrification, and the TN was the main driver of anaerobic ammonia oxidation. This study provides valuable insights into nitrogen cycling in surface water, contributing to a better understanding of this important process. © 2024 Elsevier Ltd

关键词： Genes

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