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B-Doped Lotus Pollen Biochar Photothermal Activating Periodate for Acetaminophen Degradation by Non-Radical Pathway: Significance of Thermal Effect from the Photothermal Process

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SSRN 2025年

作者： Qin, Lei Hu, Shuyuan Yi, Huan Wang, Wenjun Lai, Cui Liu, Shiyu Ma, Dengsheng Tong, Tao Deng, Hao Lv, Guangjie College of Environmental Science and Engineering Key Laboratory of Environmental Biology and Pollution Control Hunan University Changsha410082 China College of Resources and Environmental Engineering Guizhou University Guiyang550025 China School of Resources and Environment Hunan University of Technology and Business Changsha410205 China

Advanced oxidation technology based on periodate (PI) activation has gained prominence in environmental pollution control. However, existing activation methods are time-consuming and energy-intensive, necessitating the development of novel activation methods. In this study, a photothermal activation method for PI based on B-doped lotus pollen biochar was developed to degrade acetaminophen (ACE). The B-doped porous pollen biochar carbonized at 500 °C (CB500) possessed multiple active sites, enhancing its photothermal performance and promoting efficient PI activation. In the CB500/PI photothermal activation system, ACE could be completely degraded within 15 min, which was 17.71 times faster than using the individual PI activated by irradiation. Quenching experiments, electron paramagnetic resonance, and electrochemical tests proved that singlet oxygen (1O2) was the main reactive species responsible for pollutant degradation. Photothermal contribution analysis revealed that thermal effects predominated in the system, which enhanced the degradation rate. Besides, the system showed a high resistance to interference. Its degradation capability was almost unaffected by natural organic matter (NOM) and maintained excellent degradation performance over a wide pH range. This work provides novel insights into the advancement of photothermal PI activation for sewage purification, highlighting its significant potential for application in environmental pollution control. © 2025, The Authors. All rights reserved.

关键词： Bioremediation

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Long/Short-Chain Pfass and Their Mixtures on Zebrafish Embryos Developmental Toxicity and Relevant Gene Regulation Mechanisms: Enlightenment to Human Health

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SSRN 2022年

作者： Liu, Huinian Chen, Yu Hu, Wenli Luo, Yuan Zhu, Ping You, Shiqi Li, Yunxuan Jiang, Zhaobiao Xi, Yanni Su, Zhu Zhang, Chang Wu, Xiushan Li, Xin College of Environmental Science and Engineering Hunan University Changsha410082 China Key Laboratory of Environmental Biology and Pollution Control Hunan University Ministry of Education Changsha410082 China Guangdong Cardiovascular Institute Guangdong Provincial People’s Hospital Guangdong Academy of Medical Sciences Guangdong Guangzhou510100 China College of Life Sciences Hunan Normal University Changsha410081 China College of Resources and Environment Shanxi Agricultural University Taigu 030801 China

Background: Per- and polyfluoroalkyl substances (PFASs) questions have become increasingly prominent in the fields of ecotoxicology and public health. More crucially, exposure to long-chain PFASs frequently produces developmental toxicity, prompting the large-scale production and use of derivatives based on short-chain ***: To compare the potential effects of long/short-chain PFASs and their mixtures exposure according to the zebrafish embryos toxic phenotype and its gene expression ***: (i) PFASs had negative influence on hatchability, lethality and teratogenicity of embryos. Long-chain PFASs were more toxic than short-chain, and the toxicity of their mixtures were irregular. (ii) PFASs exposure caused zebrafish pericardial edema, abnormal bending, blood accumulation, and developmental delay. (iii) Zebrafish treated with different PFASs had significant differences in gene expression. Even causing overall genetic changes, the main pathways of this process were autophagy and apoptosis. (Ⅳ) Zebrafish resists the stress of PFASs by down-regulating the expression of genes, such as ATPase and Ca2+ transport-related gene (atp1b2b), mitochondrial function-related regulatory genes (mt-co2, mt-co3 and mt-cyb), and tumor or carcinogenic and cell proliferation-related genes (laptm4b and ctsbb).Conclusion: PFASs are harmful to human health, and the mechanism of zebrafish coping with PFASs stress may have positive enlightenment for human against tumor-associated diseases. © 2022, The Authors. All rights reserved.

关键词： Cell death

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A New Strategy for Plasma-Catalytic Reduction of No to N2 on the Surface of Modified Bi2moo6

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SSRN 2022年

作者： Chen, Si Feng, Wenji Geng, Qin Dong, Fan Wang, Haiqiang Wu, Zhongbiao Key Laboratory of Environment Remediation and Ecological Health Ministry of Education College of Environmental & Resources Science Zhejiang University Hangzhou310058 China University of Electronic Science and Technology of China Huzhou313001 China Zhejiang Provincial Engineering Research Center of Industrial Boiler & Furnace Flue Gas Pollution Control Hangzhou310027 China

Rational design of ingenious catalysts in plasma-catalysis system for NO reduction at room temperature in the presence of O2 is a major challenge. In this work, amino (NHx ) groups and oxygen vacancies (OVs) decorated Bi2MoO6 (NHO v -BMO) was designed to reduce NO to N2 by density functional theory (DFT) in the first place. An "anchoring (NH3/N2 plasma)-reduction (O2/N2 plasma)" plasma-catalytic circular system was developed to simultaneously realize the construction of the special catalysts and then apply to NO elimination. Experimental results indicated that the adsorption and activation of NOx, the activation of catalysts in plasma, and the plasma discharge intensity were improved attributed to the NH3 -plasma modification process. NO was firstly oxidized to NO2 by plasma, then NO2 experienced part-disproportionation reactions during adsorption on OVs, producing NO, N2 O, N2 and nitrates. After activation of the catalysts, the adsorbed NOx was partly oxidized to nitrates by ·O2 - on OVs sites via plasma motivated "pseudo photocatalysis", then those adsorbed NOx , nitrates and the gaseous NO/NO2 was further reduced to N2 by NHx groups for NHO v -BMO. Possible reaction pathways and mechanisms were clarified. The special circular plasma-catalytic system for NO reduction and the way of theory guiding practice may inspire novel approaches toward the design of artful catalysts for targeted reactions. © 2022, The Authors. All rights reserved.

关键词： Bismuth compounds

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Integrated carbon and nitrogen management for cost-effective environmental policies in China

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Science (New York, N.Y.) 2025年第6751期388卷 1098-1103页

作者： Xin Xu Xiuming Zhang Yiyang Zou Tianrun Chen Jingfang Zhan Luxi Cheng Wilfried Winiwarter Shaohui Zhang Peter M Vitousek Wim de Vries Baojing Gu State Key Laboratory of Soil Pollution Control and Safety Zhejiang University Hangzhou China. College of Environmental and Resource Sciences Zhejiang University Hangzhou China. International Institute for Applied Systems Analysis Laxenburg Austria. Ministry of Education Key Laboratory of Environment Remediation and Ecological Health Zhejiang University Hangzhou China. College of Computer Science and Technology Zhejiang University Hangzhou China. Policy Simulation Laboratory Zhejiang University Hangzhou China. Institute of Environmental Engineering University of Zielona Góra Zielona Góra Poland. School of Economics and Management Beihang University Beijing China. Department of Earth System Science Stanford University Stanford CA USA. Wageningen University and Research Earth Systems and Global Change Group Wageningen Netherlands. Zhejiang Provincial Key Laboratory of Agricultural Resources and Environment Zhejiang University Hangzhou China.

Carbon and nitrogen are central elements in global biogeochemical cycles. To effectively manage carbon and nitrogen in China, we developed a comprehensive model for quantifying their fluxes, investigating their interplay across 16 human and natural subsystems. Between 1980 and 2020, nitrogen losses in China increased 2.3-fold and carbon emissions surged 6.5-fold. Integrated carbon and nitrogen management holds the potential for a 74% reduction in nitrogen losses to air and water and a 91% decrease in carbon emissions to the atmosphere by 2060. Compared with separate control of carbon or nitrogen, integrated management delivers an additional reduction of 1.8 million tons of nitrogen and 26.5 million tons of carbon by 2060, bringing out a 37% decrease in unit abatement cost and a net societal benefit of 1384 billion USD.

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Coagulation and Membrane Mechanism of Al Species in Removing Humic Acid: A Dynamics Process Analysis

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SSRN 2022年

作者： Wang, Wenyu Li, Ruihua Bu, Fan Gao, Yue Gao, Baoyu Yue, Qinyan Yang, Min Li, Yi School of Environmental Science and Engineering Qilu University of Technology Shandong Academy of Sciences Jinan250353 China Shandong Provincial Key Laboratory of Water Pollution Control and Resource Reuse School of Environmental Science and Engineering Shandong University Qingdao266000 China School of Environmental and Municipal Engineering North China University of Water Resources and Electric Power Zhengzhou450000 China Marine Science Research Institute of Shandong Province Qingdao266104 China

The pH conditions affected the binding sites and complexation ability of Al species and humic acid (HA), resulting in the difference of coagulation and membrane fouling mechanism. It is important to explore the dynamic process of coagulation for the complexation mechanism of Al species and HA. In this study, three Al species (Ala/Alb/Alc) were used to control ultrafiltration (UF) process. Then, the removal efficiency of Ala for DOC was better than that of Alb and Alc, that is, the removal performance of suspended and dissolved organic matter was better for Ala. Through the analysis of coagulation dynamic process and membrane resistances, the flocs formed were smaller size and grow slowly to the equilibrium stage at pH 4, which was easy to cause membrane fouling by concentration polarization. With the pH increasing to a neutral condition, the flocs had a large size and loose structure, and then the porous cake layer was easy to be removed by physical cleaning, leading to the membrane fouling mainly due to pore plugging. Under alkaline conditions, flocs with small size and dense structure were mainly formed by sweeping, which resulted in the cake layer as the main cause of membrane fouling. This study is helpful to optimize the process of HA removal by coagulation-UF, and provides technical support for the coagulation and membrane mechanism of Al species and HA under different pH conditions. © 2022, The Authors. All rights reserved.

关键词： Coagulation

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Excellent Defluorination Performance in Nico-Layered Metal Oxide Based Asymmetric Flow Capacitive Deionization System

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SSRN 2025年

作者： Hu, Dongyang Liu, Yongqi Dai, Zhongde Sabale, Sandip Kim, Deok-Kee Li, Yiming Xiong, Jian Zheng, Yu Li, Yuping Zhou, Qiongzhi Shen, Jian College of Environment and Resources Xiangtan University Xiangtan411105 China Hunan Brunp Recycling Technology Co. Ltd. Changsha410604 China School of Carbon Neutrality Future Technology Sichuan University Chengdu610065 China Department of Semiconductor Systems Engineering Sejong University Seoul05006 Korea Republic of School of Ecology and Environment Tibet University Lhasa850000 China Beijing Engineering Research Center of Process Pollution Control Division of Environment Technology and Engineering Key Laboratory of Green Process and Engineering Institute of Process Engineering Chinese Academy of Sciences Beijing100190 China

The high concentration of fluoride (F-) ions in contaminated water has become an urgent challenge for public health and environmental safety. In this contribution, we adopted asymmetric flow electrode capacitive deionization (FCDI) technique to remove F- ions, selecting NiCo layered metal oxide/carbon black (NiCo-LMO/CB) and Prussian blue analogs (cobalt hexacyanocobaltate, CoHCC) as the flow anode and cathode materials, respectively. As expected, the NiCo-LMO/CB flow electrode demonstrated excellent performance in terms of F- removal efficiency (68.54%), F- adsorption capacity (13.78 mg/g), and energy consumption (5.39 J/mg) when treating 1000 mg/L NaF solution under 1.2 V cell voltage. Combining electrochemical characterizations with structural analysis, such excellent defluorination performance of NiCo-LMO/CB can be ascribed to both electrostatic attraction and flexible ions intercalation. Hopefully, this work provides new ideas for defluorination of high concentration fluoridated wastewater via adopting asymmetric FCDI. © 2025, The Authors. All rights reserved.

关键词： Deionized water

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Smartphone as an Alternative to Measure Chlorophyll- a Concentration In Small Waterbodies

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SSRN 2023年

作者： Qi, Lingyan Yin, Han Ye, Liangtao Wang, Zhengxin Zhang, Shuai Wu, Fengwen Jiang, Xinzhe Huang, Qi Huang, Jiacong School of Geography and Tourism Anhui Normal University Wuhu241002 China Engineering Technology Research Center of Resources Environment and GIS Anhui Province Wuhu241002 China Anhui Provincial Engineering Laboratory of Water and Soil Pollution Control and Remediation School of Ecology and Environment Anhui Normal University Wuhu241002 China Key Laboratory of Watershed Geographic Sciences Nanjing Institute of Geography and Limnology Chinese Academy of Sciences Nanjing210008 China Key Laboratory of Poyang Lake Wetland and Watershed Research Ministry of Education Jiangxi Normal University Nanchang330022 China

The variation of chlorophyll-a concentrations (Chl-a) in aquatic ecosystems has attracted much attention due to its direct link to harmful algal blooms. However, there has been a lack of a cost-effective method for measuring Chl-a in small waterbodies. Inspired by the increase of smartphone photography, a Smartphone-based convolutional neural networks (CNN) framework (SCCA) was developed to estimate Chl-a in Aquatic ecosystem. To evaluate the performance of SCCA, 238 paired records (a smartphone image with a 12-color background and a measured Chl-a value) were collected from diverse aquatic ecosystems (e.g., rivers, lakes and ponds) across China in 2023. Our performance-evaluation results revealed a NS and R2 value of 0.73 and 0.77 in Chl-a estimation, demonstrating a better (NS=0.81, R2=0.85) model fit in lower Chl-a ( © 2023, The Authors. All rights reserved.

关键词： Smartphones

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Amino acids regulate energy utilization through mammalian target of rapamycin complex 1 and adenosine monophosphate activated protein kinase pathway in porcine enterocytes

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Animal Nutrition 2020年第1期6卷 98-106页

作者： Hao Xiao Cuifang Zha Fangyuan Shao Li Wang Bi’e Tan State Key Laboratory of Livestock and Poultry Breeding Ministry of Agriculture Key Laboratory of Animal Nutrition and Feed Science in South ChinaGuangdong Public Laboratory of Animal Breeding and NutritionGuangdong Key Laboratory of Animal Breeding and NutritionInstitute of Animal ScienceGuangdong Academy of Agricultural SciencesGuangzhou510640China Hunan Provincial Key Laboratory of Animal Nutritional Physiology and Metabolic Process Key Laboratory of Agro-ecological Processes in Subtropical RegionNational Engineering Laboratory for Pollution Control and Waste Utilization in Livestock and Poultry ProductionInstitute of Subtropical AgricultureChinese Academy of SciencesChangsha410125China Faculty of Health Sciences University of MacaoMacaoChina College of Animal Science and Technology Hunan Agricultural UniversityChangsha410128China

As major fuels for the small intestinal mucosa,dietary amino acids(AA)are catabolized in the mitochondria and serve as sources of energy *** present study was conducted to investigate AA metabolism that supply cell energy and the underlying signaling pathways in porcine *** porcine epithelial cells(IPEC-J2)were treated with different concentrations of AA,inhibitor,or agonist of mammalian target of rapamycin complex 1(mTORCl)and adenosine monophosphate activated protein kinase(AMPK),and mitochondrial respiration was *** results showed that AA treatments resulted in enhanced mitochondrial respiration,increased intracellular content of pyruvic acid and lactic acid,and increased hormone-sensitive lipase mRNA ***,decreased citrate synthase,isocitrate dehydrogenase alpha,and carnitine palmitoyltransferase 1 mRNA expression were also *** found that AA treatments increased the protein levels of phosphorylated mammalian target of rapamycin(p-mTOR),phosphorylated-p70 ribosomal protein S6 kinase,and phosphorylated-4 E-binding protein *** is more,the protein levels of phosphorylated AMPKα(pAMPKa)and nicotinamide adenine dinucleotide(NAD)-dependent protein deacetylase sirtuin-1(SIRT1)were decreased by AA treatments in a time depending *** bioenergetics and the production of tricarboxylic acid cycle intermediates were decreased upon inhibition of mTORCl or ***,AMPK activation could up-regulate the mRNA expressions of inhibitor of nuclear factor kappa-B kinase subunit beta(Ikbk(3),integrin-linked protein kinase(ILK),unconventional myosin-Ic(Myolc),ribosomal protein S6 kinase beta-2(RPS6 Kβ2),and vascular endothelial growth factor(VEGF)-β,which are downstream effectors of mammalian target of rapamycin(mTOR).The mRNA expressions of phosphatidylinositol 4,5-bisphosphate 3-kinase catalytic subunit delta isoform(PIK3 CD)and5’-AMP-activated protein kinase subunit gamma-1(PRKAG1),which are upst

关键词： Amino acids Mammalian target of rapamycin Adenosine monophosphate activated protein kinase Mitochondrial respiration Energy utilization

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Doped Cu0 and sulfidation induced transition from R-O• to •OH in peracetic acid activation by sulfidated nano zero-valent iron-copper

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Water research 2024年 256卷 121621页

作者： Wenbo Xu Danlian Huang Guangfu Wang Wei Zhou Ruijing Li Hai Huang Li Du Ruihao Xiao Sha Chen College of Environmental Science and Engineering Hunan University Changsha 410082 PR China Key Laboratory of Environmental Biology and Pollution Control Hunan University Ministry of Education Changsha 410082 PR China. Key Laboratory of Environmental Biology and Pollution Control Hunan University Ministry of Education Changsha 410082 PR China. Electronic address: huangdanlian@***. Hubei Provincial Key Laboratory of Green Materials for Light Industry School of Materials and Chemical Engineering Hubei University of Technology Wuhan 430068 China.

Peracetic acid (PAA) has emerged as a new effective oxidant for various contaminants degradation through advanced oxidation process (AOP). In this study, sulfidated nano zero-valent iron-copper (S-nZVIC) with low Cu doping and sulfidation was synthesized for PAA activation, resulting in more efficient degradation of sulfamethoxazole (SMX, 20 μM) and other contaminants using a low dose of catalyst (0.05 g/L) and oxidant (100 μM). The characterization results suggested that S-nZVIC presented a more uniform size and distribution with fewer metal oxides, as the agglomeration and oxidation were inhibited. More significantly, doped Cu and sulfidation significantly enhanced the generation and contribution of •OH but decreased that of R-O• in S-nZVIC/PAA/SMX system compared with that of nZVIC and S-nZVI, accounting for the relatively high degradation efficiency of 97.7% in S-nZVIC/PAA/SMX system compared with 85.7% and 78.9% in nZVIC/PAA/SMX and S-nZVI/PAA/SMX system, respectively. The mechanisms underlying these changes were that (i) doped Cu° could promote the regeneration of Fe(Ⅱ) for strengthened PAA activation through mediating Fe(Ⅱ)/Fe(Ⅲ) cycle by Cu(Ⅰ)/Cu(Ⅱ) cycle; (ii) S species might consume part of R-O•, resulting in a decreased contribution of R-O• in SMX degradation; (iii) sulfidation increased the electrical conductivity, thus facilitating the electron transfer from S-nZVIC to PAA. Consequently, the dominant reactive oxygen species transited from R-O• to •OH to degrade SMX more efficiently. The degradation pathways, intermediate products and toxicity were further analyzed through density functional theory (DFT) calculations, liquid chromatography-mass spectrometry (LC-MS) and T.E.S.T software analysis, which proved the environmental friendliness of this process. In addition, S-nZVIC exhibited high stability, recyclability and degradation efficiency over a wide pH range (3.0∼9.0). This work provides a new insight into the rational design and modification of nano

关键词： Cu(Ⅰ)/Cu(Ⅱ) cycle Electrical conductivity Fe(Ⅱ)/Fe(Ⅲ) cycle Peracetic acid S species •OH

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Microplastic dilemma: Assessing the unexpected trade-offs between biodegradable and non-biodegradable forms on plant health, cadmium uptake, and sediment microbial ecology

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Journal of hazardous materials 2024年 477卷 135240页

作者： Wei Zhou Danlian Huang Sha Chen Guangfu Wang Ruijin Li Wenbo Xu Yang Lei Ruihao Xiao Lingshi Yin Haojie Chen Fei Li College of Environmental Science and Engineering Hunan University Changsha 410082 PR China Key Laboratory of Environmental Biology and Pollution Control Hunan University Ministry of Education Changsha 410082 PR China. Key Laboratory of Environmental Biology and Pollution Control Hunan University Ministry of Education Changsha 410082 PR China. Electronic address: huangdanlian@***. Hubei Provincial Key Laboratory of Green Materials for Light Industry School of Materials and Chemical Engineering Hubei University of Technology Wuhan 430068 PR China.

Despite extensive substitution of biodegradable plastics (BPs) for conventional plastics (CPs), research on their environmental ecological consequences as microplastics (MPs) is scarce. This study aimed to fill this gap by investigating the impacts of six prototypical MPs (categorized into BMPs and CMPs) on plant growth, cadmium (Cd) translocation, and bacterial communities in contaminated sediments. Results showed both BMPs and CMPs hindered plant development; yet interestingly, BMPs provoked more pronounced physiological and biochemical changes alongside increased oxidative stress due to reactive oxygen species accumulation. Notably, most MP types promoted the absorption of Cd by plant roots potentially via a "dilution effect". BMPs also induced larger shifts in soil microbial metabolic functions compared to CMPs. Ramlibacter was identified as a key biomarker distinguishing BMPs from CMPs, with link to multiple N metabolic pathways and N assimilation. This study offers novel insights into intricate biochemical mechanisms and environmental chemistry behaviors underpinning MP-Cd interactions within the plant-microbe-sediment system, emphasizing BMPs' higher potential ecological risks based on their significant effects on plant health and microbial ecology. This work contributes to enhancing the comprehensive understanding of their ecological implications and potential threats to environmental security.

关键词： Biodegradable Heavy metals Microplastics Phytotoxicity Sediment bacterial community

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