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Evaluation of laboratory and environmental exposure systems for protein modification upon gas pollutants and environmental factors

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Journal of environmental Sciences 2024年第9期143卷 213-223页

作者： Zhiwei Pan ShiyiWu Qiaoze Zhu Fobang Liu Yongjian Liang Chenglei Pei Haoyu Jiang Yingyi Zhang Senchao Lai The Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters Ministry of EducationSchool of Environment and EnergySouth China University of TechnologyGuangzhou 510006China Department of Environmental Science and Engineering Xi’an Jiaotong UniversityXi’an 710049China Guangzhou Sub-branch of Guangdong Ecological and Environmental Monitoring Center Guangzhou 510006China State Key Laboratory of Organic Geochemistry Guangdong Key Laboratory of Environmental Protection and Resources Utilizationand Joint Laboratory of the Guangdong-Hong Kong-Macao Greater Bay Area for the EnvironmentGuangzhou Institute of GeochemistryChinese Academy of SciencesGuangzhou 510640China School of Marine Sciences Sun Yat-sen UniversityZhuhai 519082China

Chemical modifications of proteins induced by ambient ozone(O_(3))and nitrogen oxides(NOx)are of public health concerns due to their potential to trigger respiratory *** laboratory and environmental exposure systems have been widely used to investigate their relevant mechanism in the *** bovine serum albumin(BSA)as a model protein,we evaluated the two systems and aimed to reduce the uncertainties of both the reactants and products in the corresponding kinetic *** the laboratory simulation system,the generated gaseous pollutants showed negligible *** layers of BSA were coated on the flow tube with protein extraction recovery of 87.4%.For environmental exposure experiment,quartz fiber filter was selected as the upper filter with low gaseous O_(3)(8.0%)and NO_(2)(1.7%)losses,and cellulose acetate filter was appropriate for the lower filter with protein extraction efficiency of 95.2%.The protein degradation process was observed without the exposure to atmospheric oxidants and contributed to the loss of protein monomer mass fractions,while environmental factors(e.g.,molecular oxygen and ultraviolet)may cause greater protein monomer *** on the evaluation,the study exemplarily applied the two systems to protein modification and both showed that O_(3) promotes the protein oligomerization and nitration,while increased temperature can accelerate the oligomerization and increased relative humidity can inhibit the nitration in the environmental exposure *** developed laboratory and environmental systems are suitable for studying protein modifications formed under different atmospheric conditions.A combination of the two will further reveal the actual mechanism of protein modifications.

关键词： Protein modification laboratory simulation environmental exposure Oligomerization Nitration

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How small is big enough? Big data-driven machine learning predictions for a full-scale wastewater treatment plant

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Water Research 2025年 274卷 123041页

作者： Ma, Yanyan Qiao, Yiheng Chen, Mengxue Rui, Dongni Zhang, Xuxiang Liu, Weijing Ye, Lin State Key Laboratory of Pollution Control and Resource Reuse School of Environment Nanjing University Nanjing210023 China Nanjing Gaoke Environmental Technology Co. Ltd. Nanjing210038 China Jiangsu Provincial Key Laboratory of Environment Engineering Jiangsu Provincial Academy of Environmental Science Nanjing210036 China

Wastewater treatment plants (WWTPs) generate vast amounts of water quality, operational, and biological data. The potential of these big data, particularly through machine learning (ML), to improve WWTP management is increasingly recognized. However, the costs associated with data collection and processing can rise sharply as datasets grow larger, and research on determining the optimal data volume for effective ML application remains limited. In this study, we comprehensively analyzed water quality, operational, and biological data collected from a full-scale WWTP over 970 days. Our results demonstrate that ML models can predict not only operational and water quality parameters (concentrations of dissolved oxygen and effluent chemical oxygen demand) but also the abundances of functional bacteria. Notably, we discovered that increasing data volume does not always improve model performance, and that data collection intervals do not need to be excessively small, as moderate intervals can still yield reliable predictions. These findings suggest that excessively large datasets may not be necessary for effective ML predictions in WWTPs. Overall, this study underscores the importance of optimizing dataset size to balance computation efficiency and prediction accuracy, providing valuable insights into data management strategies that can enhance the operational efficiency and sustainability of WWTPs. © 2024 Elsevier Ltd

关键词： Data accuracy

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Pilot-scale phosphorus polishing from wastewater using nano-metal oxides confined in millimeter-sized polymeric hosts: Performance and sustainability analysis

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Chemical Engineering Journal 2025年 517卷

作者： Xu, Peizhi Wang, Mingming Zhao, Xin Zhang, Yanyang Zhang, Xiaolin Yang, Wenlan Hua, Ming Zhang, Weiming Pan, Bingcai State Key Laboratory of Pollution Control and Resource Reuse School of the Environment Nanjing University Nanjing210023 China School of Environment Nanjing University Nanjing210023 China State Environmental Protection Engineering Center for Organic Chemical Industrial Waste Water Disposal and Resources Reuse Nanjing210023 China School of the Environmental Science and Engineering Yangzhou University Yangzhou225127 China

Nanomaterial-enabled technologies hold significant promise for advanced water treatment, however, very few cases are available particularly in pilot or field applications. This study presents a comprehensive evaluation of a pilot-scale (50 t/d) phosphorus treatment system employing nanocomposite materials at a municipal wastewater treatment plant (MWWTP) near Taihu Lake, China. Three polymeric nanocomposites, i.e., HZO-201 (Zr-based), HFO-201 (Fe-based) and La-201 (La-based), were utilized in the fixed-bed adsorption system for comparative analysis. The removal efficiencies of total phosphorous (TP), orthophosphate (ortho-P) and organic P, along with the variation of pH, conductivity and other major co-existing substances were recorded for continuous 180-day operation with the breakthrough point set at 0.10 mg/L (TP). All three materials were able to reduce TP from an average of 0.24 to 0.02 mg/L. The effective treatable volumes before breakthrough reached 39,600, 46,440 and 50,040 bed volumes (BV) for HFO-201, HZO-201 and La-201, respectively. Further investigations using dissolved organic matter (DOM) fractionation, fluorescence excitation-emission matrix imaging, and molecular size screening identified small organic acids as key contributors to negatively influence efficiency and material reusability. While calcium and fluoride accumulation significantly altered the crystal structure of La-201 post-regeneration. Statistical analysis, including Pearson correlation and principal component analysis, confirmed and highlighted the significant negative impacts of calcium, fluoride, and dissolved organic matters (DOMs) on long-term phosphorus removal. Economic analysis estimated a competitive treatment cost of 0.70–0.80 USD per kilogram of phosphorus removed, while the life cycle assessment identified major environmental impacts from electricity and NaOH usage during material production, implementation, and regeneration. © 2025 Elsevier B.V.

关键词： Effluents

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Bottom-up synthesis of semiconductive carbonaceous nanosheets on hematite photoanode for photoelectrochemical water splitting

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Nano Research 2022年第1期15卷 627-636页

作者： Guosheng Li Zhuofeng Hu School of Environment Science and Engineering Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation TechnologySun Yat-sen UniversityGuangzhou 510275China College of Environmental and Chemical Engineering Zhaoqing UniversityZhaoqing 526061China State Key Laboratory of Photocatalysis on Energy and Environment College of ChemistryFuzhou UniversityFuzhou 350116China

Coupling two-dimention carbon materials like graphene on photodelectrode can achieve high-efficiency photoelectrochemical ***-up synthesis of carbon-based two-dimensional materials in green media from simple molecules is very attractive but remains a *** is an ideal precursor for the synthesis but previous report requires pyrolysis at high temperature(>700℃).Herein,starting with glucose,we develop a low temperature(210℃)synthesis of carbonaceous nanosheets in aqueous solution of *** the aid of ethylenediamine and Fe3+/Fe27Co27Ni2+ions,the nanosheets can grow on hematite nanorod array with very close ***,a metallic region is formed at the interface due to atom distribution distortion,which can promote the charge *** activity can be greatly enhanced by about 500%due to fast charge *** is much better than that prepared by physically or chemically mixing graphene and hematite(<200%).The enhancement is mainly due to the deformation area between the nanosheets and the *** effective hole diffusion length increases from 2 to 8 nm and lifetime of charge carrier also increases,as confirmed by ultrafast transient absorption *** method provides more opportunity for simple,mild and cost-effective fabrication of carbon-based two-dimensional by bottom-up method.

关键词： photocatalytic water oxidation hematite two-dimensional carbon bottom-up

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Stability Optimization of Iron-Based Catalysts: Application of Cr-Enriched Alloy Steel Catalyst in Ozonation Pharmaceutical Wastewater

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SSRN 2024年

作者： Xiao, Siqi An, Wenhui Ma, Luming State Key Laboratory of Pollution Control and Resource Reuse College of Environmental Science and Engineering Tongji University Shanghai200092 China

Catalytic ozonation for advanced treatment of industrial wastewater has proved to be effective, and the stability of the catalyst is crucial for the long-term application of the ozonation process in practical engineering. In this study, the electrochemical characteristics of four iron shavings: alloy steels (38CrMoAl and 40Cr) and carbon steels (A3 and 45#) were investigated, and a new citric acid-optimized H2O2 modification method was proposed. The low open circuit potential (OCP) of carbon steels indicated that they have higher reactivity and require shorter modification times. The higher the OCP of alloy steels, the more H2O2 concentration was required to enhance modification efficiency. By adding citric acid, the rapid modification of alloy steel was achieved, and the catalysts exhibited lower passivation current (Ip), indicating a lower rate of substrate loss and a longer lifetime of alloy steel catalysts. Furthermore, Cr enrichment occurred in the oxide layer of alloy steel catalysts. The Cr/Fe (atomic ratio) in oxide layer for 38CrMoAl and 40Cr increased from 0.018 to 0.040 and from 0.010 to 0.037, respectively. The presence of CrOOH and Cr2O3 within the oxide layer to reinforce the layer’s overall structural integrity and enhance its protection for the internal substrate, making the catalysts more resistant to adapt to high-salinity wastewater. Through laboratory tests, it was found that among the four catalysts, 38CrMoAl showed the highest stability and good catalytic activity with low iron loss concentration. Therefore, the pilot-scale application effect of 38CrMoAl catalyst was evaluated. In the advanced treatment of pharmaceutical wastewater, the Chemical oxygen demand (COD) and total organic carbon (TOC) removal was 56.3% and 32.4%, respectively. These results showed that the stability of catalyst can be improved by optimizing the selection of steel, and the introduction of citric acid achieved Cr enrichment effect and amplified the potential stability

关键词： Stability

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Regeneration and reuse of anode graphite from spent lithium-ion batteries with low greenhouse gas (GHG) emissions

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Chinese Chemical Letters 2023年第10期34卷 111-115页

作者： Junjie Liu Hui Shi Ke Yu Yanni Geng Xingyu Hu Genping Yi Jianzhi Zhang Xubiao Luo National-Local Joint Engineering Research Center of Heavy Metals Pollutants Control and Resource Utilization Nanchang Hangkong UniversityNanchang 330063China Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle Nanchang Hangkong UniversityNanchang 330063China School of Environment and Energy Shenzhen Graduate SchoolPeking UniversityShenzhen 518055China State Key Lab of Urban Water Resource and Environment School of Civil and Environmental EngineeringHarbin Institute of Technology ShenzhenShenzhen 518055China

Regenerating spent graphite(SG)from retired lithium-ion batteries(LIBs)can effectively avoid resource ***,the technology is challenged by the impurity content and energy *** this study,micro-expanded graphite(MEG)was synthesized by one-step oxidation method using waste LIBs anode graphite as material and perchloric acid as intercalation and oxidant ***,its performance as a LIBs anode material were investigated as well as the greenhouse gas(GHG)emissions of the whole process were *** acid was successfully embedded in the SG during the reaction,which effectively removed the impurities in the *** introduced during intercalation and delamination,such as nanopores and intercrystalline *** provide additional space for Li ions during charging and discharging,thereby promoting capacity *** prepared MEG expresses a rate capability as high as 340.32 m Ah/g at a current density of 0.1 C and still retains 81.73%of the capacity after 100 cycles at a current density of 1 ***,the GHG emissions of the synthesis process of this article and other literatures are *** results demonstrated that perchloric acid treatment process provides a low-carbon,time-and energy-saving approach for regenerated SG as battery grade material.

关键词： Spent graphite Retired lithium-ion batteries Greenhouse gas emissions Regenerated Perchloric acid Micro-expanded graphite

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Identification of pollutant markers in rural mountainous areas of China by combining non-targeted analysis with zebrafish embryo toxicity tests

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Science of the Total environment 2025年 965卷 178625页

作者： Li, Jiaqi Zhou, Min Chen, Zhongli Guo, Jinsong Fang, Fang Schäffer, Andreas Shao, Ying Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment Ministry of Education Chongqing University Chongqing400045 China Institute for Environmental Research RWTH Aachen University Aachen52074 Germany State Key Laboratory of Pollution Control and Resource Reuse School of the Environment Nanjing University Nanjing210093 China

Emerging pollutants (EPs) are increasingly found around the world, yet their composition and the risks pose to soil environments remain unclear, making a challenge to EP management, particularly in mountainous rural areas. In this study, we collected soils from three types of mountainous villages, each representing different levels of economic development: an industrial village, an ecotourism village, and an agricultural village. We analyzed these samples using non-target analysis and Danio rerio embryotoxicity test (ZET). A total of 216 compounds (level 2) were identified by matching with mzCloud database, with 149, 107, and 157 found in YY (industrial village), DX (ecotourism village) and LH (agricultural village), respectively. Interestingly, 78 compounds were present in all three villages, while the number of unique substances ranged from 7 to 47 in each village, serving as potential pollution markers. The most prevalent substances identified were aliphatics, heterocyclics, and aromatics. The ZET results showed that all soil extracts had significant acute toxic effects. Further analysis revealed a correlation between the toxic substances and the economic types of the villages. Specifically, linear chain dicarboxylic acids, drugs, and oxygenated polycyclic aromatic hydrocarbons (OPAHs) were the primary toxicants in the industrial village, whereas phthalate esters dominated in the other two villages. These findings provide valuable insights for effective monitoring of EPs in mountainous rural areas. © 2025 Elsevier B.V.

关键词： Methyl ester

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Sulfamethoxazole Removal and Ammonium Conversion in Microalgae Consortium: Physiological Responses and Microbial Community Changes

SSRN

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SSRN 2024年

作者： Iyobosa, Eheneden Wang, Rongchang Chen, Gaoxiang Blessing, Adesina Odunayo Haijing, Ren Bavumiragira, Jean Pierre Zhao, Jianfu State Key Laboratory of Pollution Control and Resource Reuse College of Environmental Science and Engineering Tongji University Shanghai200092 China

Microalgae (Mychonastes sp.) consortium was investigated for nutrient and antibiotics removal and its responses to varying sulfamethoxazole (SMX) concentrations (0-1000 µg/L) in ammonia-rich wastewater. The results showed that the introduction of SMX (100-1000 µg/L) slightly improved ammonium nitrogen removal efficiency instead of inhibition. Swift SMX degradation was observed across all SMX treated systems, with the highest SMX removal efficiency (96%) at SMX concentration of 100 µg/L. Biodegradation remained the dominant SMX removal mechanism, contributing 78% of SMX removal at SMX concentration of 800 µg/L, while adsorption and photolysis played minor roles. Addition of SMX augmented biomass and lipid productivity, but decreased chlorophyll contents in the microalgae consortium. Furthermore, extracellular polymeric substance (EPS) production correlated positively with SMX input concentration, with the microalgae consortium exposed to 800 µg/L SMX displaying the most pronounced stimulation of proteins production (51.5 ± 2.0 mg/g DCW) and polysaccharides production (74.8 ± 3.9 mg/g DCW). In response to increase in SMX concentrations, enzyme activities associated with antioxidant defense, such as superoxide dismutase (SOD), peroxidase (POD) and malondialdehyde (MDA) increased, while catalase (CAT) decreased, indicating an initial defense mechanism. Concurrently, the relative abundance of Mychonastes sp. within the consortium rose from 87% at 300 µg/L SMX to 99.9% at 800 µg/L SMX, while Shannon indices of the bacterial community increased from 1.415 to 2.867. This shift inhibited the initially dominant Saprospiraceae bacteria, facilitating the profound increase of adapted Aquimonas. These findings demonstrate the feasibility of simultaneous removal of antibiotic and nutrients from wastewaters with microalgae consortium system. © 2024, The Authors. All rights reserved.

关键词： Microalgae

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Simulation of the Ecosystem Productivity Responses to Aerosol Diffuse Radiation Fertilization Effects over the Pan-Arctic during 2001–19

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Advances in Atmospheric Sciences 2024年第1期41卷 84-96页

作者： Zhiding ZHANG Xu YUE Hao ZHOU Jun ZHU Yadong LEI Chenguang TIAN 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&Technology(NUIST)Nanjing 210044China Climate Change Research Center Institute of Atmospheric Physics(IAP)Chinese Academy of Sciences(CAS)Beijing 100029China University of Chinese Academy of Sciences Beijing 100049China State Key Laboratory of Severe Weather&Key Laboratory of Atmospheric Chemistry of CMA Chinese Academy of Meteorological SciencesBeijing 100081China

The pan-Arctic is confronted with air pollution transported from lower *** have shown that aerosols help increase plant photosynthesis through the diffuse radiation fertilization effects(DRFEs).While such DRFEs have been explored at low to middle latitudes,the aerosol impacts on pan-Arctic ecosystems and the contributions by anthropogenic and natural emission sources remain less ***,we perform regional simulations at 0.2o×0.2ousing a well-validated vegetation model(Yale Interactive terrestrial Biosphere,YIBs)in combination with multi-source of observations to quantify the impacts of aerosol DRFEs on the net primary productivity(NPP)in the pan-Arctic during *** show that aerosol DRFEs increase pan-Arctic NPP by 2.19 Pg C(12.8%)yr^(-1)under clear-sky conditions,in which natural and anthropogenic sources contribute to 8.9% and 3.9%,*** all-sky conditions,such DRFEs are largely dampened by cloud to only 0.26 Pg C(1.24%)yr^(-1),with contributions of 0.65% by natural and 0.59% by anthropogenic *** aerosols cause a positive NPP trend of 0.022% yr^(-1)following the increased fire activities in the *** contrast,anthropogenic aerosols induce a negative trend of-0.01% yr^(-1)due to reduced emissions from the middle *** trends in aerosol DRFEs show a turning point in the year of 2007 with more positive NPP trends by natural aerosols but negative NPP trends by anthropogenic aerosols *** affected by modeling uncertainties,this study suggests a likely increasing impact of aerosols on terrestrial ecosystems in the pan-Arctic under global warming.

关键词： diffuse radiation fertilization effects anthropogenic aerosols natural aerosols pan-Arctic net primary productivity

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Enhanced Degradation of Bisphenol Af (Bpaf) by Visible Light Irradiated Zero Valent Iron Activated Persulfate System

SSRN

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SSRN 2023年

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

In this study, we conducted a systematic study of bisphenol AF (BPAF) removal by visible light coupled zero valent iron activated persulfate (Vis/Fe0/PS) system. The results showed that the use of visible light significantly improved the removal efficiency of BPAF in Fe0/PS system. Under visible light irradiation, PS became excited, which favored its reaction with Fe2+ and the formation of hydrogen peroxide to produce more free radicals. Moreover, Fe3+ could form complex with mono-hydroxylated and mono-carboxylated intermediate of BPAF, and the photoinduced ligand-metal charge transfer (LMCT) process can effectively transfer the charge to the metal ion, accelerating the reduction of Fe3+ to Fe2+ to enhance the generation of free radicals. The generation of hydroxylation products of bisphenol AF in the Vis/Fe0/PS system is greatly increased compared to the Fe0/PS system. The Vis/Fe0/PS system demonstrated great application value that it reduced the economic cost of BPAF treatment, and sunlight irradiation was also effective in outdoor degradation test. Findings of this study provides new insights into the synergistic role of visible light in Fe0/PS systems and may advance the practical application of Vis/Fe0/PS system in water and wastewater treatment. © 2023, The Authors. All rights reserved.

关键词： Iron compounds

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