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Chemosphere 2025年 370卷 143937页

作者： Sun, Haohao Li, Jie Zhang, Yunian Zhuang, Lu Zhou, Zhou Ren, Yanfang Xu, Xia He, Junyu Xue, Yingang School of Environmental Science and Engineering Changzhou University Jiangsu Changzhou213164 China State Key Laboratory of Pollution Control and Resource Reuse School of the Environment Nanjing University Jiangsu Nanjing China College of Urban Construction Changzhou University Jiangsu Changzhou213164 China

Acoustic cavitation is an advanced, eco-friendly oxidation technology effective in removing organic pollutants from water. However, research on its use for degrading phenol, a common and challenging phenolic pollutant, is limited. This study explores the optimal conditions for phenol degradation using acoustic cavitation and assesses its practical application through extensive pilot tests. Results from batch tests show that low-frequency (15 kHz) ultrasonic cavitation effectively treats high concentrations of phenol (1000 mg L−1). Aeration and acidic pH enhance removal efficiency, while alkaline conditions inhibit degradation. Analysis of total organic carbon (TOC), degradation products, and volatile organic compounds (VOCs) reveals that the primary intermediates are substituted benzenes and alkanes. Long-term pilot tests demonstrated the device's effectiveness in phenol removal and its operational stability over 180 days. The study also establishes a relationship between removal efficiency, hydraulic retention time (HRT), and operating costs, highlighting the feasibility of low-frequency ultrasonic cavitation for treating high-concentration phenolic wastewater and its potential role in the pretreatment stage of biochemical processes. © 2024

关键词： Wastewater treatment

Review:Progress in Core-shell Rubber Particles for Efficiently Toughening Resins

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Journal of Harbin Institute of Technology(New Series) 2022年第6期29卷 34-63页

作者： Xin-Gui Li Xiong Wang Mei-Rong Huang Yue-Shan He Fei Liu Wei-Hong Xu State Key Laboratory of Pollution Control and Resource Reuse College of Environmental Science and EngineeringTongji UniversityShanghai 200092China Key Laboratory of Advanced Civil Engineering Materials of Ministry of Education College of Materials Science and EngineeringTongji UniversityShanghai 200092China Shenzhen Newfilms New Materials Technology Co. LtdShenzhen 518106GuangdongChina

Core-shell toughening particles are structured composite particles consisting of generally two different components, one at the center as a rubbery elastic core and surrounding by the second as a glassy inelastic shell. The design, preparation, and application of core-shell polymer particles have been briefly reviewed. Morphological characteristics of the core-shell particles by transmission electron microscopy(TEM) and scanning electron microscopy(SEM) are focused. The vital factors that are useful to control core-shell morphology and toughening properties including core-shell monomer species, polymerization conditions, cross-linking reagents, synthetic method, and post-processing techniques are analyzed. Distinguished properties are mainly considered as the most desirable features that endow core-shell polymer particles with various applicabilities, particularly as effectively toughening components in brittle epoxy resin and polylactide that are substrate of copper clad laminate widely used in the modern electronic world and environmentally friendly materials that are useful as packaging films, disposable tableware, biomedical equipment, and new energy vehicles.

关键词： core-shell particle rubbery core glassy shell brittle resin toughening epoxy resin electronic material

Organic amendments for in situ immobilization of heavy metals in soil: A review

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Chemosphere 2023年第1期335卷 139088页

作者： Gao, Jun Han, Haoxuan Gao, Chang Wang, Yuhao Dong, Bin Xu, Zuxin State Key Laboratory of Pollution Control and Resource Reuse College of Environmental Science and Engineering Tongji University Shanghai200092 China College of Environmental Science and Engineering Guilin University of Technology Guilin541006 China

There is a growing need for soil remediation due to the increase in heavy metals (HMs) migrating into the soil environment, especially those from man-made sources dominated by industry and agriculture. In situ immobilization technology, because of its lower life cycle environmental footprint, can achieve "green and sustainable remediation" of soil heavy-metal pollution. Among the various in situ immobilization remediation agents, organic amendments (OAs) stand out as they can act as soil conditioners while acting as HMs immobilization agents, and therefore have excellent application prospects. In this paper, the types and remediation effects of OAs for HMs in situ immobilization in soil are summarized. OAs have an important effect on the soil environment and other active substances in soil while interacting with HMs in soil. Based on these factors, the principle and mechanism of HMs in situ immobilization in soil using OAs are summarized. Given the complex differential characteristics of soil itself, it is impossible to determine whether it can remain stable after heavy-metal remediation;therefore, there is still a gap in knowledge regarding the compatibility and long-term effectiveness of OAs with soil. In the future, it is necessary to develop a reasonable HMs contamination remediation program for in situ immobilization and long-term monitoring through interdisciplinary integration techniques. These findings are expected to provide a reference for the development of advanced OAs and their applications in engineering. © 2023 Elsevier Ltd

关键词： Soils

Metagenomic and Ft-Icr Ms Insights into the Mechanism for the Arsenic Biogeochemical Cycling in Groundwater

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SSRN 2024年

作者： Jiang, Honglin Xie, Xianjun Li, Junxia Jiang, Zhou Pi, Kunfu Wang, Yanxin School of Environmental Studies China University of Geosciences Wuhan430074 China State Environmental Protection Key Laboratory of Source Apportionment and Control of Aquatic Pollution China University of Geosciences Wuhan430078 China

Arsenic (As) is a groundwater contaminant of global concern. The degradation of dissolved organic matter (DOM) can provide a reducing environment for As release;however, the interaction of DOM with local microbial communities and how different sources and types of DOM influence the biotransformation of As in aquifers is uncertain. This study used optical spectroscopy, Fourier transform ion cyclotron resonance mass spectrometry (FTIR-MS), metagenomics, and structural equation modeling (SEM) to demonstrate the how the biotransformation of As in aquifers is promoted. The results indicated the DOM in high-As groundwater is dominated by highly unsaturated low-oxygen compounds that are quite humic and unstable. Metagenomics analysis indicated Acinetobacter, Pseudoxanthomonas, and Pseudomonas predominate in high-As environments;these genera all contain As detoxification genes and are members of the same phylum (Proteobacteria). SEM analyses indicated the presence of Proteobacteria is positively related to highly unsaturated low-oxygen compounds in the groundwater and conditions that promote arsenite release. The results illustrate how the biogeochemical transformation of As in groundwater systems is affected by DOM from different sources and with different characteristics. © 2024, The Authors. All rights reserved.

关键词： Aquifers

Insights into the synergistic toxicity mechanisms caused by nano- and microplastics with triclosan using a dose-dependent functional genomics approach in Saccharomyces cerevisiae

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Chemosphere 2024年 362卷 142629页

作者： Zong, Linhao Wang, Xiaoyang Huo, Miaomiao Yi, Fangying Huang, Shan Ling, Tianqi Fang, Yumo Ma, Fei Zhang, Xiaowei Guan, Miao Jiangsu Key Laboratory for Biodiversity and Biotechnology College of Life Sciences Nanjing Normal University 1 Wenyuan Rd. Jiangsu Nanjing210023 China State Key Laboratory of Pollution Control & Resource Reuse School of the Environment Nanjing University 163 Xianlin Ave. Jiangsu Nanjing210023 China

The emergence of polystyrene (PS) nano- and microplastics (NMPs) and triclosan (TCS) as environmental contaminants has raised concerns about their combined toxicities to organisms, but the complex toxicity arising from their interactions and the underlying molecular mechanisms remain obscure to us. In this study, we comprehensively detected the combined toxicity of PS-NMPs and TCS via the dose-dependent yeast functional genomics profiling. Firstly, our findings demonstrated that the combined exposure to PS-NMPs and TCS elicited a synergistic toxic effect in which the toxicity depended on the size of the PS-NMPs. Secondly, we found that TCS exposure, either alone or in combination with PS-NMPs, influenced lipid biosynthetic processes and ATP export pathways, while the unique responsive genes triggered by combined exposure to TCS and PS-NMPs are significantly enriched in mitochondrial translation, ribosomal small subunit assembly, and tRNA wobble uridine modification. Thirdly, our results demonstrated that point of departure (POD) at the pathway level was positively correlated with IC50, and POD was a more sensitive predictor of toxicity than the apical toxicity endpoints. More importantly, our findings suggested that the combined exposure of PS-NMPs in a size-dependent manner not only alleviated the harmful effects of TCS on glycerophospholipid metabolism, but also exacerbated its negative impact on oxidative phosphorylation. Collectively, our study not only provides new insights into the intricate molecular mechanisms that control the combined toxicity of PS-NMPs and TCS, but also confirms the effectiveness of the dose-dependent functional genomics approach in elucidating the molecular mechanisms of the combined toxicity of pollutants. © 2024 Elsevier Ltd

关键词： Yeast

Fe-MOFs nanosheets for photo-Fenton degradation of carbamazepine

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Chemosphere 2024年 364卷 143240页

作者： Sun, Siyu Hu, Youyou Li, Zhengkui State Key Laboratory of Pollution Control and Resource Reuse Nanjing University Nanjing210023 China School of the Environment Nanjing University Nanjing210023 China Shanghai Fisheries Research Institute Shanghai Fisheries Technical Extension Station Shanghai200433 China

Iron(II)-based metal organic framework (Fe(II)-MOF) nanosheets have emerged as promising candidates for photo-Fenton catalysis. However, efficiently synthesizing Fe(II)-MOF nanosheets remains a significant challenge. Here, a bottom-up synthesis strategy is proposed to prepare two-dimensional Fe-MOF nanosheets (TFMN) with micrometer lateral dimensions and nanometer thickness, featuring Fe(II) as the metal nodes. The application of TFMN in the photo-Fenton degradation of carbamazepine (CBZ) demonstrates remarkable CBZ degradation performance and excellent efficiency across a wide range of pH values. The electron density and density of states are further calculated by density functional theory. Mechanism analysis identifies h+, •OH and •O2− as the predominant active species contributing to the catalytic oxidation process in the Vis/TFMN/H2O2 system. © 2024 Elsevier Ltd

关键词： Metal-Organic Frameworks

Enhancing Cadmium Uptake in Rice Grains Through Chloride Intervention: Field-Based Investigations and Perspectives

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SSRN 2024年

作者： Guo, Jingxia Ge, Chenghao Abulimiti, Madinai Hu, Cong Wang, Guo Zhou, Dongmei State Key Laboratory of Pollution Control and Resource Reuse School of the Environment Nanjing University Nanjing210023 China College of Resource and Environmental Science Soil Environmental Health and Regulation Key Laboratory of Fujian Province Fujian Agriculture and Forestry University Fuzhou350002 China

Cadmium (Cd) contamination in rice ecosystems poses substantial threats to global food security and ecological integrity. This study examines the effect of chloride (Cl-) addition on the dynamics of Cd in soil and rice plants. Our findings indicated that Cl- addition markedly decreased soil pH, increased Eh, and facilitated the formation of Cl-Cd complexes, resulting in enhancing the solubility, mobility, and bioavailability of Cd. Furthermore, Cl- addition also led to considerable reductions in DTPA-extractable iron (Fe) and manganese (Mn), which indirectly boosted Cd uptake by rice roots, ranging from 17.4% to 65.0%, through the upregulation of transport genes OsNramp1 and OsNramp5, and decreased iron plaque formation by 23.1% to 27.2%. Additionally, Cl- stimulated Cd transport form roots to shoots by upregulating the OsHMA2 gene, enhancing Cd accumulation in rice tissues and facilitating its translocation across plant compartments, ultimately resulting in elevated Cd levels in brown rice (41.3%~76.1%). Field trials have substantiated that Cl- application significantly enhanced Cd absorption in rice plants cultivated in slightly acid and Cd-contaminated soils, implying introducing Cl- exacerbates the risk of Cd accumulation in rice grains. Consequently, to safeguard food safety and protect ecological health, the use of Cl-containing materials in agricultural practices should be avoided. © 2024, The Authors. All rights reserved.

关键词： Biochemistry

Nitrated and parent PAHs in the surface water of Lake Taihu,China:Occurrence,distribution,source,and human health risk assessment

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Journal of Environmental Sciences 2021年第4期33卷 159-169页

作者： Jijie Kong Yuxuan Dai Mengshu Han Huan He Jiapeng Hu Junyi Zhang Junzhe Shi Qiming Xian Shaogui Yang Cheng Sun The State Key Laboratory of Pollution Control and Resource Reuse School of the EnvironmentNanjing UniversityNanjing 210023China School of Environment Nanjing Normal UniversityNanjing 210023China College of Ecological and Resource Engineering Fujian Provincial Key laboratory of Eco-Industrial Green TechnologyWuyi UniversityWuyishan 354300China Wuxi Environmental Monitoring Centre Wuxi 214121China

Nitrated polycyclic aromatic hydrocarbons(NPAHs)have toxic potentials that are higher than those of their corresponding parent polycyclic aromatic hydrocarbons(PAHs)and thus have received increasing attention in recent *** this study,the occurrence,distribution,source,and human health risk assessment of 15 NPAHs and 16 PAHs were investigated in the surface water from 20 sampling sites of Lake Taihu during the dry,normal,and flood seasons of *** PAH concentrations ranged from 255 to 7298 ng/L and the NPAH concentrations ranged from not-detected(ND)to 212 ng/*** the target analytes,2-nitrofluorene(2-n Flu)was the predominant NPAH,with a detection frequency ranging from 85%to 90%and a maximum concentration of 56.2 ng/*** three-ringed and four-ringed NPAHs and PAHs comprised the majority of the detected *** terms of seasonal variation,the highest levels of the NPAHs and PAHs were in the dry season and flood season,*** ratio analysis indicated that the prime source of NPAHs was direct combustion,whereas in the case of PAHs the contribution was predominantly from a mixed pattern including pollution from unburned petroleum and petroleum *** human health risk of NPAHs and PAHs was evaluated using a lifetime carcinogenic risk assessment *** carcinogenic risk level of the targets ranged from 2.09×10^(-7)to 5.75×10^(-5)and some surface water samples posed a potential health risk.

关键词： Nitrated polycyclic aromatic hydrocarbons Surface water Occurrence Seasonal variation Human health risk assessment

Navigating the Dual Pathways of Ion Removal in Flow-Electrode Capacitive Deionization: Capacitive Trapping vs. Electrodialytic Migration

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SSRN 2025年

作者： Gu, Haibo Hou, Chengsi Mao, Yunfeng Wu, Deli School of Energy and Power Engineering University of Shanghai for Science and Technology Shanghai200093 China State Key Laboratory of Pollution Control and Resources Reuse College of Environmental Science & Engineering Tongji University Shanghai200092 China Shanghai Key Laboratory of Multiphase Flow and Heat Transfer in Power Engineering Shanghai200093 China Shanghai Institute of Pollution Control and Ecological Security Shanghai200092 China

By introducing flowing electrodes, FCDI enables desalination through dual mechanisms of electrodialytic and capacitive effects. Clarifying their distinct roles is essential to advance tailored system design and performance enhancement. This work elucidates the antagonistic interplay between capacitive trapping and electrodialytic migration in flow-electrode capacitive deionization (FCDI) through both electrochemical characterization and multiphysics modeling. Experimental analyses reveal that elevated flow rates enhance electrodialytic migration but impair capacitive adsorption. Multivariate parametric studies demonstrate that capacitive dominance prevails at high current densities and low electrolyte concentrations, whereas electrodialytic effects peak under high electrolyte concentration and moderate flow rates. The balance between the effects of electrodialysis (ED) and capacitive deionization (CDI) is greatly impacted by convective mass transfer, which is caused by the electrode flow rate. While higher solid weight percentages in the flow electrode improve the CDI effect by increasing the number of active sites for salt adsorption, increased electrode flow rates maximize the ED effect by encouraging ion transport in the electrolyte. In short words, strategies to promote free ions dispersing in the electrolyte would enhance the electrodialytic contribution, whereas the concentration polarization would benefit the capacitive contribution. This work opens the door for the exploration of upgrading FCDI architectures and optimizing operation parameters while providing insights into the intricate interactions within the system. © 2025, The Authors. All rights reserved.

关键词： Desalination

Degradation of Bisphonel Af(Bpaf) by Zero-Valent Iron Activated Persulfate: Kinetics, Mechanisms, Theoretical Calculations, and Effect of Co-Existing Chloride

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SSRN 2022年

作者： Qin, Cheng Qi, Yumeng Teng, Xiaolei Qu, Ruijuan State Key Laboratory of Pollution Control and Resources Reuse School of the Environment Nanjing University Jiangsu Nanjing210023 China

The removal of Bisphonel AF (BPAF) by zero-valent iron activated persulfate (Fe 0 /PS) system was systematically evaluated in this work. 30.0 μM BPAF was removed by 94.4% in 60 min of treatment under optimal conditions of pH = 3.0 and [PS] = [Fe 0 ] = 3.0 mM. Cl - significantly accelerated the removal of BPAF, resulting from accelerated Fe 2+ release and reactive chlorine species (RCS) formation. Liquid chromatography-time-of-flight-mass spectrometry identified thirteen degradation products, and bond breaking, coupling reactions, hydroxylation and sulfate addition were considered as the major transformation pathways. When Cl - was present, six new chlorinated byproducts were also generated. Based on density functional theory (DFT) calculations, the occurrence of radical addition reactions was verified and the preferential reaction channels were determined. Significantly BPAF degradation products were less toxic, according to toxicity assessment by the ECOSAR program. Moreover, a high removal efficiency of BPAF (> 90%) was also obtained in the three actual water matrixes. The present work demonstrates the feasibility of Fe 0 /PS system for treating BPAF, which could also provide new insights into the influence of coexisting Cl - on the environmental fate of organic pollutants in sulfate radicals based advanced oxidation processes. © 2022, The Authors. All rights reserved.

关键词： Iron compounds