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Energy & Environmental Sustainability 2025年第1期1卷

作者： Ning Duan State Key Laboratory of Pollution Control and Resources Reuse College of Environmental Science and Engineering Tongji University 1239 Siping Road Shanghai 200092 China

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Valorization of Saline Dredged Materials by Geopolymer Production: Salt Content Impact and Response Surface Methodology Analysis

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SSRN 2024年

作者： Wang, Zuobin Zhang, Qingbo Liu, Misha Yin, Jifu Mao, Xiaodan Hong, Guojun Cai, Xiang Zhang, Zhiqiang Xia, Siqing National Engineering Research Center of Dredging Technology and Equipment Key Laboratory of Dredging Technology CCCC Shanghai200082 China State Key Laboratory of Pollution Control and Resource Reuse Key Laboratory of Urban Water Supply Water Saving and Water Environment Governance in the Yangtze River Delta of Ministry of Water Resources College of Environmental Science and Engineering Tongji University Shanghai200092 China Ocean College Zhejiang University Hangzhou310058 China College of Geography and Environmental Sciences Zhejiang Normal University Jinhua321004 China

Significant quantities of saline sediments are dredged annually as part of coastal engineering and harbor maintenance operations. The valorization of saline dredged materials (DM) is highly important for minimizing environmental damage and promoting sustainable development. Using DM for geopolymer production has emerged as a sustainable alternative to saline DM disposal. Nevertheless, the impact of the salt content in DM on the process of geopolymer synthesis remains uncertain. This study synthesized geopolymers by mixing DM with fly ash (FA) and ground granulated blast furnace slag (GGBS), as well as an alkaline activator, and investigated the influence of salt content on the efflorescence and compressive strength properties of the produced geopolymers. The findings demonstrated that it is feasible to make a DM-FA/GGBS geopolymer with satisfactory resistance to efflorescence and compressive strength, as long as the salt content in DM remains below 2%. An excessive salt content led to the oversaturation of sodium chloride (NaCl), resulting in NaCl crystal formation both on the surface and within the produced geopolymer. The presence of an excessive amount of sodium ions inhibited the geopolymerization reaction, causing a reduction in the length of the geopolymer chains and the loosening of the geopolymer matrix. This could potentially lead to a decrease in the compressive strength of the DM-based geopolymer. Furthermore, a response surface methodology (RSM) study was performed to investigate the effects and interactions of DM addition, Na2O concentration, and activator modulus. The results demonstrated that the interaction effect of DM addition and Na2O concentration on the compressive strength was significant. © 2024, The Authors. All rights reserved.

关键词： Compressive strength

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Enhanced photocatalytic activity of Gd3+ doped TiO2 and Gd2O3 modified TiO2 prepared via ball milling method

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Journal of Rare Earths 2019年第8期37卷 845-852,I0002页

作者： Di Wu Chen Li Dashuai Zhang Lili Wang Xiaopeng Zhang Zaifeng Shi Qiang Lin Key Laboratory of Water Pollution Treatment&Resource Reuse Hainan Normal UniversityHaikou 571158China College of Chemistry and Chemical Engineering Hainan Normal UniversityHaikou 571158China State Key Laboratory of Pollution Control and Resource Reuse Nanjing UniversityNanjing 210043China

Gd^3+/TiO2 and Gd2O3/TiO2 nanoparticles were prepared by ball milling *** effects of Gd^3+ion and Gd2O3 on the structure and optical property of TiO2 were studied by XRD and UV-vis *** surface area was determined by Brunauer-Emmett-Teller(BET)*** morphology and elemental composition were characterized by *** was used to determine the surface compositions and chemical character of *** sample sizes and microstructures were observed by *** photocatalytic activities of TiO2 nanoparticles modified with rare earth metal gadolinium(Gd^3+ion or Gd2O3)were evaluated by degradation of methylene blue(MB)under UV *** results indicate that 2,5 mol%Gd^3+/TiO2 shows the best photocatalytic activity compared with Gd2O3/TiO2 and pure *** existence of gadolinium can exhibit the aggregation and induce lattice distortion of TiO2 obtained from XRD,SEM and TEM *** band gap energy of 2.5 mol%Gd^3+/TiO2 decreases to3.07 eV and it leads to visible light absorption response which can be seen from UV-vis absorption *** surface area of 2.5 mol%Gd^3+/TiO2 equals to 85.8 m^2/g and average crystal size is 21.1 *** and XPS analyses reveal that gadolinium can be introduced either into TiO2 lattice or adsorbed on the surface of *** content of surface OH groups in 2.5 mol%Gd^3+/TiO2 is 50,88%(1.55 times higher than that of pure TiO2)and the content of lattice oxygen decreases to 11.26%.The MB(25 mg/L)degradation reaction rate constants of 2,5 mol%Gd^3+/TiO2,0.5 mol%Gd2O3/TiO2 and pure TiO2 were0.0713,0.0588 and 0.0263 min^-1,*** degradation rates of rhodamine B(30 mg/L)in 60 min are 97,9%,90.1%and 84.6%for 2,5 mol%Gd^3+/TiO2,0.5 mol%Gd2O3/TiO2 and pure TiO2,respectively.

关键词： Ball milling method Rare earth Gadolinium TiO2 Methylene blue

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Determination of Arsenic and Antimony by Atmospheric Pressure Glow Discharge Portable Emission Spectrometer with Solid Acid Hydride Generation

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SSRN 2023年

作者： Han, Shanru Zhu, Zhenli Liu, Ying Dong, Junhang Xu, Chaoyu Liu, Xing Liu, Jinzhao Zheng, Hongtao State Key Laboratory of Biogeology and Environmental Geology School of Earth Sciences China University of Geosciences Wuhan430074 China School of Mechanical Engineering and Electronic Information China University of Geosciences Wuhan430074 China State Environmental Protection Key Laboratory of Source Appointment and Control of Aquatic Pollution Ministry of Ecology and Environment China Faculty of Material Science and Chemistry China University of Geosciences Wuhan430074 China

In this work, the use of solid acid hydride generation (HG) for the simultaneous determination of As and Sb in environmental water samples by miniaturized atmospheric pressure glow discharge plasma atomic emission spectrometer (APGD-OES) was evaluated. It was found that HG with the use of sulfamic acid tablets can achieve similar sensitivity with conventional HCl-KBH4 for As and Sb determination by APGD-OES, which avoids the safety problem caused by the use of hydrochloric acid and greatly facilitates field analysis. In addition, the whole detection procedure does not require complex pretreatment of liquid samples, thereby enabling analysis in an environmentally friendly manner. Under optimal conditions, the obtained detection limits (LODs) are as low as 1.14 μg L-1 for As and 0.62 μg L-1 for Sb, respectively. In addition, it offers good repeatability, where the relative standard deviations (RSDs) are less than 5% at 20 μg L-1. The accuracy of the proposed method was validated by the analysis of simulated natural water reference samples. Moreover, it has been successfully applied to the determination of tap water, pond water, and hot spring samples. All these results clearly demonstrate the proposed simple, cost-effective and field-deployable method provides a promising approach for the field analysis of As and Sb. © 2023, The Authors. All rights reserved.

关键词： Arsenic

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Engineering Pd Atom Membrane-Nanoparticle on Carbon Nitride for Efficient Photocatalytic Water Disinfection Via in Situ Generation and Activation of H2o2

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SSRN 2024年

作者： Li, Minghui Jiang, Jian Zhu, Zhangqiang Fang, Caixia Liu, Chang Zhu, Hongjie Chen, Yan College of Ecology and Environment Anhui Normal University 189 South of Jiuhua Road Anhui Wuhu241002 China Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology School of Chemistry and Chemical Engineering Liaocheng University Liaocheng252059 China Department of Stomatology Nanjing First Hospital Nanjing Medical University Nanjing210000 China State Key Laboratory of Pollution Control and Resource Reuse School of the Environment Nanjing University Jiangsu210023 China

Hydrogen peroxide (H2O2) used as water disinfectant has advantages of being green and free of disinfection byproducts, but remains challenging in production and performance. Herein, a Pd atom membrane-nanoparticle supported on carbon nitride nanotubes (PdAM-NP/CNNT) photocatalyst is prepared to enhance the visible-light-driven disinfection performance via in-situ generation and activation of H2O2. Our results indicate that complete inactivation of 9.4 log10 (cfu/mL) of Escherichia coli (E. coli) is achieved within 5 h in PdAM-NP/CNNT/visible light system, whereas only 2.4 log10 (cfu/mL) reduction is obtained in the same exogenous H2O2 condition. The reduction efficiency of PdAM-NP/CNNT (9.4 log10 (cfu/mL)) within 5 h is significantly higher than that of PdNP/CNNT (6.2 log10 (cfu/mL)) and CNNT (2.7 log10 (cfu/mL)). Therefore, a synergistic mechanism is proposed, in which the generation and activation of H2O2 by Pd atom membrane and nanoparticle are the major processes. The PdAM-NP structure can not only efficiently capture O2 molecules for oxygen reduction to H2O2, but facilitate robust H2O2 and O2 molecules activation. In disinfection process, oxidative species (h+, ·O2-, 1O2) can be produced, which cause the damage of outer membrane, and followed by cell death. Moreover, PdAM-NP/CNNT exhibits a broad-spectrum availability, anti-interference in natural waters and an excellent stability after four consecutive reaction cycles. Overall, this study provides the rational design of high-performance photocatalyst and highlights the significant potential of the PdAM-NP/CNNT photocatalysis system as an alternative green disinfection technology for purifying microbial-contaminated water. © 2024, The Authors. All rights reserved.

关键词： Escherichia coli

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Applying Synchronous Fluorescence Spectra with Gaussian Band Fitting to Characterize Dom from a River Network and its Correlations with Bacterial Communities Under Anthropogenic Landcover

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SSRN 2023年

作者： Tu, Shengqiang Li, Qingqian Jing, Zhangmu Gao, Hongjie Liu, Dongping Shao, Meiqi Yu, Huibin State Key Laboratory of Environment Criteria and Risk Assessment Chinese Research Academy of Environmental Sciences Beijing100012 China College of Water Sciences Beijing Normal University Beijing100875 China State Key Laboratory of Pollution Control and Resource Reuse College of Environmental Science and Engineering Tongji University Shanghai200092 China Xiamen Lawlink Development Co. Ltd Xiamen361008 China Tongji University China

Dissolved organic matter (DOM) from a river network could be associated with anthropogenic landcover, whose interactions with microbials might be conducive to revealling biogeochemistry behaviour of organic matter. In this study, synchronous fluorescence spectra (SFS) with Gaussian band fitting and two-dimensional correlation spectroscopy (2D-COS) was employed to identify DOM fractions and reveal their interactions with bacterial communities. DOM was extracted from a river network under eco-agricultural rural (RUR), eco-residential urban (URB), eco-economical town (TOW), and eco-industrial park (IND) regions in Jiashan Plain of eastern China. The overlapping peaks observed in the SFS were successfully separated into four fractions using Gaussian band fitting, i.e. tyrosine-like fluorescence (TYLF), tryptophan-like fluorescence (TRLF), microbial humic-like fluorescence (MHLF), and fulvic-like fluorescence (FLF) materials. Across all four regions, TRLF(44.79%±7.74%) and TYLF(48.09%±8.85%) were the dominant components. Based on 2D-COS, variations of TYLF and TRLF were extremely larger than those of FLF in RUR-TOW. However, in URB-IND, the former exhibited lower variations compared to the latter. These suggested that FLF be likely derived continuously from lignin and other residue of terrestrial plant origin along the river network, and TYLF and TRLF be originated discontinuously from domestic wastewater in RUR-TOW. By high-throughput sequenced OTUs, the number of organisms in RUR-TOW could be higher than those in URB-IND, while genes associated with carbohydrate metabolism were lower in former than those in the latter. According to co-occurrence networks, microbes could promote the production of TYLF and TRLF in RUR-TOW. In contrast, microbial communities in URB-IND might contribute to decompose FLF. The obtained results could not only reval interactions between DOM fractrions and bacterial communities in the river network, but this methodology could be applied to othe

关键词： Fluorescence

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Nontargeted Metabolomic Evidence for Antagonism between Tetracycline and its Resistance Bacteria Underlying Their Obesogenic Effects on Caenorhabditis Elegans

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SSRN 2022年

作者： Li, Zhuo Yu, Zhenyang Cui, Changzheng Yin, Daqiang State Key Laboratory of Pollution Control and Resource Reuse Key Laboratory of Yangtze River Water Environment Ministry of Education College of Environmental Science and Engineering Tongji University Shanghai200092 China Shanghai Institute of Pollution Control and Ecological Security Shanghai200092 China Jiaxing Tongji Institute for Environment Zhejiang Jiaxing314051 China State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process School of Resources and Environmental Engineering East China University of Science and Technology Shanghai200237 China

Environmental antibiotics raise serious health concerns due to their contribution to the obesity prevalence. Moreover, antibiotics promote antibiotic resistance bacteria (ARB) which represent another emerging pollutant. However, the interaction between antibiotic and ARB in the obesogenic effects remained unexplored. In the present study, the obesogenic effects of tetracycline antibiotic (TCH) and ARB containing tetA were studied on C. elegans, and E. coli OP50 (OP50) was referred as a normal bacterial food. Results showed that TCH stimulated nematode triglyceride contents, while ARB alone had no significant influences. The combination of TCH and ARB showed less obesogenic effects than TCH alone, showing antagonism. Biochemical assays showed that the combination of TCH and ARB showed similar effects to ARB alone, and had less increases in lipid metabolism enzymes or metabolites than those of TCH or ARB alone, supporting the antagonism. In the nontargeted metabolomic analysis, TCH with ARB showed less significantly changed metabolites (SCMs) in the nematodes than TCH or ARB alone, partially explaining the antagonism. The metabolomic results also pointed out the significant involvement of amino acids, the carboxylic acids and derivatives, and also the benzene and substituted derivatives in the obesogenic effects of TCH and ARB. © 2022, The Authors. All rights reserved.

关键词： Antibiotics

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Cobalt Oxides Grown In-Situ on Carbon Nitride Nanosheets for Efficient Peroxymonosulfate Activation and Organic Contaminants Degradation: Performance, Mechanism, and Application Study

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SSRN 2024年

作者： Zhang, Xiao Bai, Tianhang Chen, Ruichu Zheng, Sihan Yin, Junjie Qi, Guangdou Li, Xi Zheng, Huaili Sun, Yongjun Jiangsu Key Laboratory of Industrial Pollution Control and Resource Reuse School of Environmental Engineering Xuzhou University of Technology Xuzhou221018 China School of Environmental Sciences and Engineering Nanjing Tech University Nanjing211816 China Key Laboratory of the Three Gorges Reservoir Region’s Eco-Environment State Ministry of Education Chongqing University Chongqing400045 China College of Urban Construction Nanjing Tech University Nanjing211816 China Nanjing Tech University China

Heterogeneous peroxymonosulfate (PMS) activation processes are considered promising Fenton-like oxidation technologies, and the design of heterogeneous catalysts is key to enhancing their practical applicability. In this study, a catalyst consisting of cobalt oxides grown in situ on carbon nitride nanosheets (CoOx-CN) was designed for PMS activation and the degradation of emerging organic pollutants. The unique structure of CoOx-CN enriched its specific surface area and the exposure of reactive sites, while the CN substrate's influence on CoOx nucleation promoted the formation of sub-valent CoO crystal planes and oxygen vacancies (OV). As a result, the CoOx-CN/PMS system demonstrated efficient tetracycline removal efficiency, reaching 99.4% within 21 min, with a specific catalytic kinetic constant (Kspecific) reaching 0.016 L·min-1m-2. Mechanistic studies indicated efficient generation of reactive species and degradation of organic pollutants induced by the strong interaction between CoOx-CN and PMS. Based on theoretical calculations, intermediate identification, and toxicity analysis, a degradation pathway and toxicity evolution for tetracycline were proposed. Additionally, the application of CoOx-CN in a membrane system and its performance in treating natural water bodies confirmed its potential for real-scale applications. This work provides a reference for the design of Fenton-like catalysts and their application in actual wastewater treatment scenarios. © 2024, The Authors. All rights reserved.

关键词： Nanosheets

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Ozone Water Is an Effective Disinfectant for SARS-CoV-2

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Virologica Sinica 2021年第5期36卷 1066-1068页

作者： Xiao Hu Zhen Chen Zhengyuan Su Fei Deng Xinwen Chen Qi Yang Pan Li Quanjiao Chen Jun Ma Wuxiang Guan Rongjuan Pei Yun Wang CAS Key Laboratory of Special Pathogens and Biosafety Wuhan Institute of VirologyCenter for Biosafety Mega-ScienceChinese Academy of SciencesWuhan 430071China University of Chinese Academy of Sciences Beijing 100049China State Key Laboratory of Virology Wuhan Institute of VirologyCenter for Biosafety Mega-ScienceChinese Academy of SciencesWuhan 430071China Guangzhou Institutes of Biomedicine and Health Chinese Academy of SciencesGuangzhou 510530China Department of Gastroenterology Guangzhou Women and Children’s Medical CenterGuangzhou 510623China State Key Laboratory of Pollution Control and Resource Reuse School of Environmental Science and EngineeringTongji UniversityShanghai 200092China State Key Laboratory of Urban Water Resource and Environment School of EnvironmentHarbin Institute of TechnologyHarbin 150090China

Dear Editor,The severe acute respiratory syndrome coronavirus 2(SARS-Co V-2)is the causative pathogen of the pandemic coronavirus disease 2019(COVID-19),which has infected nearly 90 million people and resulted in 2 million human deaths by the end of the year ***-Co V-2 can survive in aerosols or on the surfaces of various materials for up to 72 h(Ong et al.2020;van Doremalen et al.2020).In China,although the human-to-human transmission pathway is under well control,the fomite transmission pathway now accounts for a significant fraction of new infection ***,environmental disinfection of public areas and workspaces potentially contaminated by SARS-Co V-2 is an important measure to control the spread of COVID-19 by fomite transmission.A disinfectant that is safe and readily available at a low cost is urgently needed to meet environmental disinfection requirements.

关键词： al. acute respiratory

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Enhanced removal of bisphenol S in ozone/peroxymonosulfate system: Kinetics, intermediates and reaction mechanism

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Chemosphere 2024年 349卷 140952页

作者： Tian, Jie Qi, Yumeng Wei, Junyan Rady, Ahmed Maodaa, Saleh Allam, Ahmed A. Wang, Zunyao Qu, Ruijuan State Key Laboratory of Pollution Control and Resources Reuse School of the Environment Nanjing University Jiangsu Nanjing 210023 China Department of Zoology College of Science King Saud University P.O. Box 2455 Riyadh 11451 Saudi Arabia Department of Zoology Beni-suef University Beni-suef 65211 Egypt

The degradation process of bisphenol S (BPS) in ozone/peroxymonosulfate (O3/PMS) system was systematically explored. The results showed that the removal efficiency of BPS by O3 could be significantly improved with add... 详细信息

The degradation process of bisphenol S (BPS) in ozone/peroxymonosulfate (O₃/PMS) system was systematically explored. The results showed that the removal efficiency of BPS by O₃ could be significantly improved with addition of PMS. Compared with ozonation alone, the pseudo-first-order constant (k_obs) was increased by 2–5 times after adding 400 μM PMS. In O₃/PMS system, accelerated removal of BPS was observed under neutral and alkaline conditions. The removal efficiency of BPS reached 100% after 40 s of reaction at pH 7.0, with the k_obs of 0.098 s⁻¹. Moreover, Cu²⁺ had a catalytic effect on the O₃/PMS system, because it could catalyze the decomposition of ozone and PMS to produce •OH and SO₄^•-, respectively. Electron paramagnetic resonance illustrated that •OH and SO₄^•- were the reactive species in O₃/PMS system. Twelve intermediates were identified by mass spectrometry, and the degradation reactions in O₃/PMS system mainly included hydroxylation, sulfate addition, polymerization and β-scission. Finally, the toxicity of the products was evaluated by the EOCSAR program. Our results introduce an efficient method for BPS removal and would provide some guidance for the development of O₃-based advanced oxidation technology. © 2023 Elsevier Ltd

关键词： Bisphenol S Intermediates Ozone Peroxymonosulfate Reaction mechanism

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