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Early Warning Thresholds for Microalgal Blooms and environmental Drivers of Substrate Microalgae Recovery in Litopenaeus vannamei Aquaculture

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Water, Air, and Soil Pollution 2025年第6期236卷 1-16页

作者： Ma, Weixing Shi, Yuanyuan Ma, Ni Liu, Gaojian Gao, Yuxin Ma, Jiaru Yi, Zhaohui Yang, Min Li, Zhaoxia College of Environmental Science & Engineering Key Laboratory for Advanced Technology in Environmental Protection of Jiangsu Province Yancheng Institute of Technology Jiangsu Province Yancheng224051 China School of Marine and Biological Engineering Yancheng Institute of Technology Jiangsu Province Yancheng224051 China Jiangsu YIDA TestingTechnology Co. Ltd. Building A- 15 Big Data Industrial Park Chengnan New District Jiangsu Province Yancheng224051 China Shenzhen518055 China

In response to the global demand for high-quality protein, Litopenaeus vannamei aquaculture has rapidly expanded. However, microalgal blooms often degrade water quality, resulting in reduced yields and significant financial losses. This study investigated the recovery dynamics of substrate microalgae, which act as seed banks for microalgal blooms, and identified early warning thresholds for algae under varying environmental conditions. Sediments from bfIGuccess (BS) and breeding failure (BF) sheds were analyzed to evaluate the effects of temperature (6 °C–21 °C), light intensity (50–2,000 lx), and nutrient types (BG11 and raw water). The findings indicated that environmental factors influencing microalgal recovery followed the priority order: temperature > light > nutrient salts. The highest recovery was observed at temperatures of 11 °C and 16 °C under 2,000 lx illumination. key early warning algal species, including Melosira granulata, Cyclotella, and Chlorella, exhibited thresholds of 0.9–42.9 × 104 cells/g, 0.1–28.8 × 104 cells/g, and 1.0–31.7 × 104 cells/g, respectively. This study uniquely linked substrate algae recovery to aquaculture failures, providing quantitative thresholds and actionable insights for proactive microalgal blooms monitoring and control. These findings form a scientific basis for improving water quality management and ensuring sustainable L. vannamei aquaculture © The Author(s), under exclusive licence to Springer Nature Switzerland AG 2025.

关键词： Aquaculture

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Preparation of a novel foam concrete for the carbonation of steel slag with low thermal conductivity and enhanced CO2 capture

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Materials Letters 2025年 394卷

作者： Wang, Yuhan Lu, Bao Hou, Guihua Key Laboratory for Advanced Technology in Environment Protection of Jiangsu Province Yancheng Institute of Technology Jiangsu Yancheng224051 China

The foam concrete was prepared using carbonation curing with steel slag as the raw material. The composition and moisture content of carbonated steel slag and hydrated Portland cement were compared. The optimal preparation parameters and properties of carbonated steel slag foam concrete were investigated. Results showed that the 14 d moisture content of carbonated steel slag (5.3 %) was significantly lower than that of hydrated Portland cement (13.5 %), indicating that carbonated steel slag contains fewer heat-transfer mediums, making it superior for foam concrete production. Under optimum conditions, the steel slag foam concrete exhibited a thermal conductivity of 0.0547 W/(m·K), compressive strength of 0.59 MPa, and CO2 sequestration capacity of 138.7 g/kg. This study offers a novel approach for preparing lightweight insulation wall materials while simultaneously utilizing steel slag and CO2. © 2025

关键词： Positive temperature coefficient

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Interfacial B-O bonding modulated S-scheme B-doped N-deficient C_(3)N_(4)/O-doped-C_(3)N_(5) for efficient photocatalytic overall water splitting

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Chinese Chemical Letters 2025年第1期36卷 355-361页

作者： Entian Cui Yulian Lu Zhaoxia Li Zhilei Chen Chengyan Ge Jizhou Jiang Key Laboratory for Advanced Technology in Environmental Protection of Jiangsu Province Yancheng Institute of TechnologyYancheng 224051China School of Environmental Ecology and Biological Engineering Key Laboratory of Green Chemical Engineering Process of Ministry of EducationEngineering Research Center of Phosphorus Resources Development and Utilization of Ministry of EducationWuhan Institute of TechnologyWuhan 430205China

Photocatalytic overall pure water splitting is a promising method for generating green hydrogen energy under mild ***,this process is often hindered by sluggish electron-hole separation and *** address this,a step-scheme(S-scheme)B-doped N-deficient C_(3)N_(4)/O-doped C_(3)N_(5)(BN-C_(3)N_(4)/O-C_(3)N_(5))heterojunction with interfacial B-O bonds has been *** Pt and Co(OH)_(2) as co-catalysts,BN-C_(3)N_(4)/O-C_(3)N_(5) S-scheme heterojunction demonstrates significantly enhanced photocatalytic activity for overall pure water splitting under visible light,achieving H_(2) and O_(2) evolution rates of 40.12 and 19.62μmol/h,*** characterizations and experiments revealed the performance-enhancing effects of the enhanced built-in electric field and the interfacial B-O ***,the strengthened built-in electric field provides sufficient force for rapid interfacial electron ***,by reducing the transport energy barrier and transfer distance,the interfacial B-O bonds facilitate rapid recombination of electrons and holes with relatively low redox potential via the S-scheme charge-transfer route,leaving the high-potential electrons and holes available for H^(+)reduction and OH^(-)oxidation ***,the photocatalytic efficiency of BN-C_(3)N_(4)/O-C_(3)N_(5) S-scheme heterojunction was significantly improved,making it a promising approach for green hydrogen production through overall pure water splitting.

关键词： Interfacial B-O bonds BN-C_(3)N_(4) O-C_(3)N_(5) S-scheme heterojunction Water splitting

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Sulfhydryl-modified zeolite A with exceptional strontium adsorption selectivity

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Science China Chemistry 2025年第5期68卷 1847-1858页

作者： Lingyi Li Lanxing Ren Dong Wang Junchang Chen Qi Guo Yuting Zhao Fuqiang Zhao Linwei He Jie Li Wenqi Zhang Lijuan Song Long Chen Lixi Chen Bin Wang Lin Zhu Tao Duan Zhifang Chai Shuao Wang State Key Laboratory of Radiation Medicine and Protection School for Radiological and Interdisciplinary Sciences (RAD-X)and Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education InstitutionsSoochow University School of Science Harbin Institute of Technology (Shenzhen) School of Chemistry and Chemical Engineering Hunan Province Key Laboratory for the Design and Application of Actinide ComplexesUniversity of South China Radioactive Waste Technology and Radiochemistry Research Department China Nuclear Power Technology Research Institute Co.Ltd. State Key Laboratory of Environment-Friendly Energy Materials School of National Defence Science & TechnologySouthwest University of Science and Technology

Efficient removal of trace radiostrontium from contaminated highly saline wastewater,such as seawater,remains a critical but challenging task due to the coexistence of large excess of hard cations like Na+,K+,Mg2+and particularly Ca2+,which shares similar physicochemical properties with Sr2+.Herein,we successfully boosted the selectivity by a sulfhydryl-functionalized NaA zeolite（SH-NaA） via ion exchange coupled with reinforced soft-soft interactions between sulfhydryl groups and Sr2+.Remarkably,SH-NaA achieved a 99.8%removal efficiency of Sr2+in the presence of a tenfold excess of Ca2+,with a distribution coefficient（Kd） of 4.98×10～5mL/*** effectiveness of SH-NaA in accurately capturing Sr2+was further validated by its superior dynamic adsorption performance in natural seawater compared to pristine NaA *** experiments highlighted SH-NaA’s exceptional Sr2+removal efficiency（qm=233.36 mg/g）,rapid adsorption kinetics（1 min）,superior decontamination depth（Kd=6.71×10～5mL/g）,and robust irradiation stability（400 kGy γ-ray）.X-ray photoelectron spectroscopy（XPS） and in situ Fouriertransform infrared（FTIR） analyses underscored the pivotal role of sulfhydryl groups in Sr2+*** functional theory（DFT） calculations revealed that the sulfhydryl-functionalized NaA zeolite exhibits the best selectivity toward Sr2+,with an interaction energy of-2.55 *** findings demonstrate that organic group functionalized zeolites hold significant promise for environmental remediation applications.

关键词： strontium selectivity adsorption seawater sulfhydryl NaA zeolite

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Chemical characteristics and sources apportionment of volatile organic compounds in the primary urban area of Shijiazhuang,North China Plain

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Journal of environmental Sciences 2025年第3期149卷 465-475页

作者： Xiao Zhang Junfeng Wang Jiangwei Zhao Junliang He Yali Lei Kai Meng RuiWei Xue Zhang Miaomiao Zhang Shuangying Ni Eleonora Aruffo College of geographical sciences and Environment Shijiazhuang UniversityShijiazhuang 050035China Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control Collaborative Innovation Center of Atmospheric Environment and Equipment TechnologySchool of Environmental Science and EngineeringNanjing University of Information Science and TechnologyNanjing 210044China Hebei Province Ecology Environmental Monitoring Center Shijiazhuang 050037China Key Lab of Geographic Information Science of the Ministry of Education School of Geographic SciencesEast China Normal UniversityShanghai 200241China Hebei Provincial Institute of Meteorological Sciences Shijiazhuang 050021China Key Laboratory of Meteorology and Ecological Environment of Hebei Province Shijiazhuang 050021China Hebei Provincial Academy of Ecological Environmental Science Shijiazhuang 050037China Department of Advanced Technologies in Medicine&Dentistry University“G.d’Annunzio”of Chieti-PescaraChieti 66100Italy Center for Advanced Studies and Technology-CAST Chieti 66100Italy

VOCs(Volatile organic compounds)exert a vital role in ozone and secondary organic aerosol production,necessitating investigations into their concentration,chemical characteristics,and source apportionment for the effective implementation of measures aimed at preventing and controlling atmospheric *** to October 2020,onlinemonitoringwas conducted in the main urban area of Shijiazhuang to collect data on VOCs and analyze their concentrations and ***,the PMF(positive matrix factorization)method was utilized to identify the VOCs *** indicated that the TVOCs(total VOCs)concentration was(96.7±63.4μg/m^3),with alkanes exhibiting the highest concentration of(36.1±26.4μg/m^3),followed by OVOCs(16.4±14.4μg/m^3).The key active components were alkenes and aromatics,among which xylene,propylene,toluene,propionaldehyde,acetaldehyde,ethylene,and styrene played crucial roles as reactive *** sources derived from PMF analysis encompassed vehicle emissions,solvent and coating sources,combustion sources,industrial emissions sources,as well as plant sources,the contribution of which were 37.80%,27.93%,16.57%,15.24%,and 2.46%,***,reducing vehicular exhaust emissions and encouraging neighboring industries to adopt low-volatile organic solvents and coatings should be prioritized to mitigate VOCs levels.

关键词： Volatile organic compounds Pollution characteristics Ozone formation potential OH radical loss rate Source apportionment

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Fabrication of porous bowl-like WO3 structures for ppb-level dimethylamine gas sensing

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Applied Surface Science 2025年 701卷

作者： Su, Tianci Hong, Daocheng Liu, Bohao Li, Lin Qian, Luzheng Yang, Xiuli Xu, Ning Yue, Lu Zhang, Wenhui Department of Physics Yancheng Institute of Technology Jiangsu224051 China Key Laboratory for Advanced Technology in Environmental Protection of Jiangsu Province Yancheng Institute of Technology Jiangsu224051 China

Porous bowl-like WO3 structures were prepared using a facile spray pyrolysis method using silica spheres (Ludox, 5–7 nm) as template. The effects of different amounts of Ludox on the structure, morphology, and gas-sensing performance of WO3 were investigated. The sensor based on the porous bowl-like WO3 structures prepared with 1.5 g Ludox exhibits the highest response to dimethylamine (DMA) at 220 °C, with a response of 650 (S = Ra/Rg), which is approximately 6.5 times that of WO3 microspheres prepared without Ludox. Additionally, this sensor shows fast response and recovery times of 20 s and 30 s, respectively, a low detection limit of 10 ppb, good selectivity, and excellent repeatability along with long-term stability towards DMA. The reaction process of DMA is revealed using in situ diffuse reflectance infrared fourier transform spectroscopy (DRIFT) and validated through density functional theory (DFT) calculations. The DFT results indicated that the adsorption energy of WO3 (020) is higher than that of WO3 (001) and WO3 (200). Its excellent gas-sensing performance is closely related to its unique porous bowl-like structure, abundant oxygen vacancies, highly exposed facets of (020) and large specific surface area. © 2025

关键词： Spray pyrolysis

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Flexible zwitterionic arm post-modificated UiO-66 for high and ultra-fast proton conduction

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Inorganic Chemistry Communications 2025年 178卷

作者： Hu, Jun Cao, Ye Cai, Lu Wu, Guanzheng Ge, Yuanyu Lin, Ling Li, Ziyin School of Textiles and Clothing & Key Laboratory for Advanced Technology in Environmental Protection of Jiangsu Province Yancheng Institute of Technology Yancheng 224051 China

Metal-organic frameworks (MOFs) based proton conductors, as a promising alternative to proton exchange membranes, are in urgent need of developing effective methods to enhance their proton conductivity. Here, we report the enhanced and ultra-fast proton conduction facilitated by the post-covalent bonding of the flexible zwitterionic arm (sulfobetaine methacrylate: SBMA) with UiO-66. A new zwitterionic MOF based proton conductor (UiO-66-SB) exhibits the higher proton conductivity of 0.1 × 10⁻² S·cm⁻¹ but with the activation energy (E_a) of only 5.8 kJ/mol at 85 °C and 90 % RH, indicating ultra-fast proton transport. This result was attributed to the continuous and shorter hydrogen bonded network formed by flexible zwitterionic arms, water molecules, and residual –NH₂. This work also demonstrates that zwitterions are highly advantageous as proton carrier media for the post-modification of MOFs. © 2025 Elsevier B.V.

关键词： Fast proton transport Metal-organic frameworks Post-modified Proton conductivity Zwitterion

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Flexible, scalable, and bifunctional MOF-based nanofibrous membranes with gems-on-string structure for simultaneous efficient water evaporation and pollution remediation

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Chemical Engineering Journal 2025年 514卷

作者： Ge, Song Song, Jun Zhang, Jichao Yang, Xiu-Li Xie, Ming-Hua Key Laboratory for Advanced Technology in Environmental Protection of Jiangsu Province Yancheng Institute of Technology Yancheng224051 China College of Textile and Clothing Yancheng Institute of Technology Yancheng224051 China Jiangsu Engineering Research Center for Digital Textile Inkjet Printing Key Laboratory of Eco-Textile Jiangnan University Ministry of Education Wuxi214122 China

Solar-driven interfacial evaporation offers a viable pathway for alleviating global water shortages. However, a significant challenge arises when the source water contains organic contaminants, as the evaporation process can lead to the enrichment and exacerbation of pollution in the remaining water. Herein, we constructed a flexible bifunctional nanofibrous membrane evaporator featuring a gems-on-string structure, designed to concurrently realize clean water production and source water purification. This was achieved through the uniform decoration of polypyrrole (PPy) nanoparticles onto silica nanofibers, followed by the tactful immobilization of zeolitic imidazolate framework (ZIF-67) polyhedrons on the fibers via a facile hot-pressing approach. The micro-nano hierarchical structure of the gems-on-string fibers enables multiple reflections between adjacent gems, significantly enhancing full-spectrum light absorption (96.3 %) and photothermal conversion. Moreover, the superhydrophilic and hierarchically interconnected channels within the membrane facilitate water transport and evaporation enthalpy diminution. Furthermore, the synergistic effects of localized heat from PPy, and photocatalysis and cobalt sites from ZIF-67 significantly promote the activation of peroxymonosulfate. As a result, the bifunctional evaporator achieves a rapid evaporation rate (2.29 kg m-2h−1) with a remarkable solar-water conversion efficiency (93.2 %) under one sun, outperforming most state-of-art evaporators, while maintaining superior oxytetracycline removal (92.5 %). Significantly, the evaporator delivers a daily freshwater output (5.3 kg m−2) when treating complex wastewater/seawater. This study not only presents an efficient strategy for fabricating flexible high-performance photothermal-catalytic membranes, but also provides a sustainable platform for freshwater production and sewage purification. © 2025 Elsevier B.V.

关键词： River pollution

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Boron cluster-based TADF emitter via through-space charge transfer enabling efficient orange-red electroluminesce

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Chinese Chemical Letters 2025年第3期36卷 232-238页

作者： Xiao Yu Dongyue Cui Mengmeng Wang Zhaojin Wang Mengzhu Wang Deshuang Tu Vladimir Bregadze Changsheng Lu Qiang Zhao Runfeng Chen Hong Yan State Key Laboratory of Coordination Chemistry Jiangsu Key Laboratory of Advanced Organic MaterialsSchool of Chemistry and Chemical EngineeringNanjing UniversityNanjing 210023China Key Laboratory for Organic Electronics and Information Displays&Jiangsu Key Laboratory for Biosensors Institute of Advanced Materials(IAM)Jiangsu National Synergistic Innovation Center for Advanced Materials(SICAM)Nanjing University of Posts&TelecommunicationsNanjing 210023China Key Laboratory for Advanced Technology in Environmental Protection of Jiangsu Province Yancheng Institute of TechnologyYancheng 224051China College of Electronic and Optical Engineering&College of Flexible Electronics(Future Technology) Nanjing University of Posts&TelecommunicationsNanjing 210023China A.N.Nesmeyanov Institute of Organoelement Compounds(INEOS) Russian Academy of SciencesMoscow 119991Russia

Thermally activated delayed fluorescence(TADF)materials driven by a through-space charge transfer(TSCT)mechanism have garnered wide ***,access of TSCT-TADF molecules with longwavelength emission remains a formidable *** this study,we introduce a novel V-type DA-D-A’emitter,Trz-mCzCbCz,by using a carborane *** design strategically incorporates carbazole(Cz)and 2,4,6-triphenyl-1,3,5-triazine(Trz)as donor and acceptor moieties,*** calculations alongside experimental validations affirm the typical TSCT-TADF characteristics of this *** to the unique structural and electronic attributes of carboranes,Trz-mCzCbCz exhibits an orange-red emission,markedly diverging from the traditional blue-to-green emissions observed in classical Cz and Trz-based TADF ***,bright emission in aggregates was observed for Trz-mCzCbCz with absolute photoluminescence quantum yield(PLQY)of up to 88.8%.As such,we have successfully fabricated five organic light-emitting diodes(OLEDs)by utilizing Trz-mCzCbCz as the emitting *** is important to note that both the reverse intersystem crossing process and the TADF properties are profoundly influenced by host *** fabricated OLED devices reached a maximum external quantum efficiency(EQE)of 12.7%,with an emission peak at 592 *** represents the highest recorded efficiency for TSCT-TADF OLEDs employing carborane derivatives as emitting layers.

关键词： Thermally activated delayed fluorescence Through-space charge transfer Carborane Boron clusters Organic light-emitting diodes

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High-Throughput Identification and Prioritization of Endocrine-Disrupting Chemicals: A Novel Method and its Application in Organic-Contaminated Soil

SSRN

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SSRN 2025年

作者： Han, Tianhao Jin, Jinsha Jin, Mengke Zhang, Rong Fan, Tianle Qu, Changsheng Ding, Liang Nie, Li Guo, Jing Tan, Haoyue Shi, Wei Dalian University of Technology China State Key Laboratory of Pollution Control and Resource Reuse School of the Environment Nanjing University Nanjing210023 China Jiangsu Province Ecology and Environment Protection Key Laboratory of Chemical Safety and Health Risk Nanjing210023 China Key Laboratory of Environmental Remediation and Ecological Health Ministry of Industry and Information Technology Jiangsu Environmental Engineering Technology Co. Ltd Jiangsu Nanjing210019 China

The environmental issues related to endocrine-disrupting chemicals (EDCs) have attracted global attention. Although previous studies have successfully screened EDCs in the environment through high-throughput qualitative methods, identifying key substances quantitatively remains challenging. To address this challenge, a new approach based on machine learning and relative equivalent potency (REP) has been developed to assess key EDCs in complex pollution scenarios. To overcome the challenge of obtaining concentration in high-throughput screening, semi-quantitative models were developed using three machine learning algorithms. The random forest algorithm showed the best performance, achieving R2 values of 0.8662 and 0.8578 for positive and negative ion modes, respectively. The quantitative evaluation of endocrine-disrupting effects, based on the concept of "equivalent toxicity", allows for calculating individual EDC contributions to the bioassay equivalency (BEQ) of a sample, thereby identifying key EDCs. This method was applied to organic-contaminated soil samples from a contaminated site, leading to the detection of 143 EDCs across four categories. 4-Nitrophenol, stearic acid, androstanolone, oxyquinoline, estradiol, triclocarban, 4-octylphenol, triclosan, diarylpropionitrile, and triethanolamine were prioritized among these EDCs. In conclusion, this work presents a quantitative strategy for identifying key EDCs in organic-contaminated soil. This study provides both methodological and data support for controlling and remediating EDC pollution. © 2025, The Authors. All rights reserved.

关键词： Triethanolamine

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