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Pyrrhotite-sulfur-limestone composite for high rate nitrogen and phosphorus removal from wastewater: Column study

Chemosphere 2024年 347卷 140711页

作者： Yang, Yinuo Huang, Gaopan Chen, Changxin Li, Ruihua State Key Laboratory of Pollution Control and Resource Reuse School of the Environment Nanjing University 163# Xianlin Avenue Nanjing210023 China

Pyrrhotite-sulfur-limestone composite (PSLC) was prepared and PSLC autotrophic denitrification biofilter (PSLCAD) was constructed with PSLC particle (2–4.75 mm) in this study. During treating synthetic, municipal and industrial secondary effluent, PSLCAD showed good NO3−-N and PO43--P removal, and the highest TON (Total oxidized nitrogen) removal rate of PSLCAD was up to 1749.91 mg/L/d. At HRT 0.5 h, and influent NO3−-N 21.09 mg/L, TON removal rate was up to 1005.12 mg/L with effluent NO3−-N 0.10 mg/L. PSLCAD achieved effluent PO43--P below 0.2 mg/L when influent PO43--P was around 0.5 mg/L. HRT down to 0.5 h had no negative impacts on N removal. Effluent pH below 7 was harmful to denitrification performance of PSLCAD. TON removal rate increased with influent NO3−-N increasing, but influent NO3−-N over 103.55 mg/L decreased NO3−-N removal rate. In PSLCAD biofilter, the most dominant bacteria were Thiobacillus and Sulfurimonas, and they played the most important role in denitrification, but the abundance of heterotrophic denitrifiers was also quite high. PO43− was mainly removed through precipitate of Fe–P in PSLCAD. The synergistic effects between pyrrhotite and sulfur autotrophic denitrification were much enhanced, and that caused PSLCAD to achieve high rate N and P removal. © 2023 Elsevier Ltd

关键词： Limestone

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Enhanced selective adsorption of rare earth elements from wastewater using Pinus massoniana-derived carbon-nano zero-valent iron

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Journal of Colloid and Interface Science 2025年 697卷 137964页

作者： Chen, Wei Chen, Qinghua Chen, Zuliang Fujian Key Laboratory of Pollution Control and Resource Reuse School of Environmental and Resource Sciences Fujian Normal University Fujian Province Fuzhou350007 China

The recovery of rare earth elements (REEs) from wastewater is crucial for promoting a circular economy and mitigating the environmental impacts associated with resource extraction. In this study, we synthesized a novel adsorbent, Pinus massoniana-derived carbon-nano zero-valent iron (PML-C@nZVI), using a self-coordination-assisted thermal reductive crystallization strategy. This material was applied to selectively recover REEs from real mining wastewater. PML-C@nZVI exhibited exceptional selectivity for REEs, with separation factors of 1.03 × 105 (Y/Mn) and 1.02 × 102 (Y/Ce), surpassing most existing adsorbents. Structural characterization revealed that the material's high specific surface area (218.36 m2/g), mesoporous architecture, and abundant defect structures facilitated the exposure of uncoordinated –OH and –COOH groups. Importantly, the graphitic carbon matrix induced electron delocalization within the Fe⁰ core, creating an electron-rich environment at C-OH and C-COOH sites. This significantly enhanced the selective adsorption of Y(III) through electrostatic and coordinative interactions. Furthermore, PML-C@nZVI demonstrated remarkable stability over five regeneration cycles, retaining 75.6 % adsorption efficiency and 81.0 % desorption efficiency. These results underscore its potential for industrial applications. This work advances the design of high-performance REE-selective adsorbents and bridges environmental remediation with sustainable resource recovery, offering a dual-strategy solution for wastewater valorization. © 2025 Elsevier Inc.

关键词： Wastewater reclamation

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Application of Fe^Ⅲ-TAML/H2O_(2) system for treatment of fluoroquinolone antibiotics

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Journal of Environmental Sciences 2021年第1期33卷 110-118页

作者： Zeyu Xian Sijia Liang Xin Jin Haoting Tian Jingyi Ling Chao Wang State Key Laboratory of Pollution Control and Resource Reuse School of the EnvironmentNanijing UniversityNanjing 210023China Shandong Prouincial Key Laboratory of Water and Soil Conservation and Enuironmental Protection College of Resource and EnvironmentLinyi UniversityLinyi 276005China

Over the recent past,fluoroquinolone antibiotics(FQs)have raised extensive attention due to their potential to induce the formation of resistance genes and"superbugs",thus various advanced oxidation techniques have been developed to eliminate their release into the *** the present study,the prototype tetraamido macrocyclic ligand(Fe^Ⅲ-TAML)/hydrogen peroxide(H2O_(2))system is employed to degrade FQs(i.e.,norfloxacin and ciprofloxacin)over a wide p H range(i.e.,p H 6-10),and the reaction rate increases with the increase in p H *** effect of dosage of Fe^Ⅲ-TAML and H2O_(2) on the degradation of FQs is evaluated,and the reaction rate is linearly correlated with the added amount of ***,the impact of natural organic matters(NOM)on the removal of FQs is investigated,and the degradation kinetics show that both NOM type and experimental concentration exhibit negligible influence on the oxidative degradation of selected *** on the results of liquid chromatography-high resolution mass spectrometry and theoretical calculations,the reaction sites and pathways of FQs by Fe^Ⅲ-TAML/H2O_(2) system are further predicted and elucidated.

关键词： Fluoroquinolone antibiotics Tetraamido macrocyclic ligand Catalytic degradation Natural organic matters

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Reproductive Influences of Erythromycin and Sulfamethoxazole on Caenorhabditis elegans over Generations Mediated by Lipid Metabolism

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Chemical Research in Chinese Universities 2023年第3期39卷 434-440页

作者： YU Zhenyang WANG Lei LI Gaotian ZHANG Jing Ecological Technique and Engineering College Shanghai Institute of TechnologyShanghai201418P.R.China Jiaxing Tongji Institute for Environment Jiaxing314051P.R.China State Key Laboratory of Pollution Control and Resource Reuse Key Laboratory of Yangtze River Water EnvironmentMinistry of EducationCollege of Environmental Science and EngineeringTongji UniversityShanghai200092P.R.China

Antibiotics are emerging pollutants with ***,their reproductive toxicities over generations and underlying mechanisms were seldom *** the present study,reproductive effects of erythromycin(ERY)and sulfamethoxazole(SMZ)were studied on Caenorhabditis elegans(***)with multi-generational exposure from F1 to F4,and their effects in the non-direct exposed offspring of F1 and F4(T4 and T4’)were explored to investigate trans-generational *** high concentrations,ERY and SMZ inhibited the reproduction and the inhibition decreased with more generations’*** low concentrations,SMZ stimulated reproduction in T4,opposite to its inhibition in *** analysis on ten enzymes and proteins in lipid and glucolipid metabolism showed that ERY commonly inhibited fatty acid synthetase(FAS)in F1 to F4,while ERY and SMZ showed stimulation and inhibition on other *** biomarker response(IBR)index values showed that ERY and SMZ stimulated the overall metabolism in F1,and the stimulation decreased and even altered to inhibition in later *** comparing multi-and trans-generational effects,ERY and SMZ at high concentration caused inhibition on reproduction in T4 and stimulation in T4’,which were opposite to those in F1 and F4.

关键词： Multi-generational effect Antibiotic Reproduction Lipid metabolism

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Response of soil organic carbon stocks and soil microbial biomass carbon to natural grassland conversion: A global meta-analysis

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Science of the Total Environment 2025年 965卷 178481页

作者： Cai, Yijun Yang, Yuwen Jiang, Jinlin Long, Tao Gu, Xueyuan Guo, Yang Li, Ming Xie, Yufeng Key Laboratory of Soil Environmental Management and Pollution Control Nanjing Institute of Environmental Sciences Ministry of Ecology and Environment Nanjing210042 China State Key Laboratory of Pollution Control and Resource Reuse School of Environment Nanjing University Nanjing210023 China

Natural grasslands worldwide are increasingly being converted into other land-use types, such as cropland and forest, thereby impacting soil carbon cycles and stocks. Soil organic carbon (SOC) is essential for regulating soil properties and microbial communities, while microbial biomass carbon (MBC) is the most active fraction of the SOC pool, both of which play pivotal roles in the global carbon cycle. Here, we performed a meta-analysis on 623 and 85 individual observations from 85 peer-reviewed articles to quantitatively evaluate the effect of grassland conversion on SOCS and MBC. Overall, conversions significantly reduced SOCS and MBC by 10.11 % and 30.63 %, respectively. Notably, the impact varied by conversion type: converting grassland to forest, cropland, and plantation reduced SOCS by 7.69 %, 16.47 %, and 20.55 %, respectively. Meanwhile, converting grassland to cropland and abandoned land decreased MBC by 47.80 % and 38.74 %, respectively. Environmental factors such as mean annual temperature (MAT), mean annual precipitation (MAP), soil total nitrogen (TN), and soil carbon-to‑nitrogen ratio (C/N) influenced these changes. SOCS and MBC were positively correlated with MAT, soil C/N and TN. Specifically, when the C/N or TN of the converted soil exceeded 1.21 or 1.11 times that of the original grassland, SOCS would exhibit a trend of carbon sequestration. Our findings provide valuable insights for global soil carbon sequestration and land use management policies. © 2025

关键词： Carbon sequestration

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过硫酸盐诱导的缺陷氮化碳中三配位氮(N3C)空位增强光催化产过氧化氢

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Engineering 2023年第6期25卷 214-221,M0008页

作者：缪蔚王奕杰刘莹秦贺贺褚成成毛舜 College of Environmental Science and Engineering Biomedical Multidisciplinary Innovation Research InstituteShanghai East HospitalState Key Laboratory of Pollution Control and Resource Reuse Tongji UniversityShanghai 200092China Shanghai Institute of Pollution Control and Ecological SecurityShanghai 200092China

近年来,原位光催化可持续过氧化氢合成技术受到越来越多的关注。其中石墨氮化碳(g-C_(3)N_(4))被认为是最有前途的合成过氧化氢的光催化剂之一;并且,在g-C_(3)N_(4)中引入氮空位已被证明是提高其光催化活性的有效策略。然而,由于g-C_(3)... 详细信息

近年来,原位光催化可持续过氧化氢合成技术受到越来越多的关注。其中石墨氮化碳(g-C_(3)N_(4))被认为是最有前途的合成过氧化氢的光催化剂之一;并且,在g-C_(3)N_(4)中引入氮空位已被证明是提高其光催化活性的有效策略。然而,由于g-C_(3)N_(4)中不同类型的氮空位对光催化活性的影响方式不同,氮空位的光催化作用机制尚不清楚。在此,本文提出了一种简便的过硫酸钠共晶聚合方法,制备了具有丰富三配位氮空位(N3C)的g-C_(3)N_(4)。这种类型的氮空位在g-C_(3)N_(4)光催化产过氧化氢的研究中尚未得到重视。本研究的结果表明,在g-C_(3)N_(4)中引入N3C空位可以成功地拓宽光吸收范围,抑制光激发电荷的重组,增强O2的吸附和活化。富含N3C空位的g-C_(3)N_(4)的光催化过氧化氢产量是原始g-C_(3)N_(4)的4.5倍。本研究提出了在g-C_(3)N_(4)中引入N3C空位的新策略,为开发光催化产过氧化氢的活性催化剂提供了一种新方法。

关键词：过硫酸盐过氧化氢光催化光吸收过硫酸钠氮化碳有效策略聚合方法

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Machine learning-driven green synthesis of iron sulfur nanoparticles: Dual optimization of biosynthesis parameters and heavy metal adsorption performance

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Separation and Purification Technology 2025年 374卷

作者： Ye, Fangfang Zhou, Ganchen Jin, Xiaoying Chen, Zuliang Fujian Key Laboratory of Pollution Control and Resource Reuse School of Environmental and Resource Sciences Fujian Normal University Fujian Province Fuzhou350117 China

Iron sulfide nanoparticles were green synthesized using Pinus massoniana Lamb extract (PML-FeS) for heavy metal removal. A comprehensive analysis was conducted to delineate the interplay between synthesis conditions and the performance of PML-FeS NPs using machine learning techniques. The synthesis parameters (reaction pH, temperature, and Fe/S molar ratio) were optimized through a machine learning framework: First, the random forest (RF) model identified reaction pH as the most critical factor (weight > 60 %). Subsequently, the Artificial Neural Network (ANN) model, trained on experimental data with synthesis conditions as inputs and removal efficiencies as outputs, predicted optimal parameter combinations via iterative simulations of 441 scenarios. This dual-model approach revealed that adjusting pH to 4 (for Pb(II)) and 9 (for Cd(II)), increasing temperature to 90 °C, and fixing Fe/S ratio to 1:1 maximized active site exposure, boosting the removal efficiencies from 72.5 % to 95.31 % for Pb(II) and 52.94 % to 80.15 % for Cd(II). Advanced characterization indicated that the optimized nanoparticles exhibited enhanced dispersion, increased surface area, large pore size, and improved binding of Pb(II) and Cd(II) at the active surface sites. Furthermore, the analysis revealed that the enrichment of functional groups (Fe-O, C-O) significantly promoted the complexation with Pb(II) and Cd(II). Finally, the optimized PML-FeS NPs successfully eliminated 92.88 % Pb(II) and 91.23 % Cd(II) from the mining wastewater. The work presents an innovative approach for synthesizing of green nanomaterials from waste biomass and efficiently removing heavy metals in wastewater. © 2025 Elsevier B.V.

关键词： Green Synthesis

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Effects of persulfate-assisted hydrothermal treatment of municipal sludge on aqueous phase characteristics and phytotoxicity

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Journal of Environmental Sciences 2023年第4期126卷 163-173页

作者： Guangchun Shan Weiguang Li Yujie Zhou Shanshan Bao Lin Zhu Wenbing Tan State Key Laboratory of Environmental Criteria and Risk Assessment and State Environmental Protection Key Laboratory of Simulation and Control of Groundwater PollutionChinese Research Academy of Environmental SciencesBeijing 100012China State Key Laboratory of Urban Water Resource and Environment School of EnvironmentHarbin Institute of TechnologyHarbin 150090China Key Laboratory of Water Management and Water Security for Yellow River Basin of Ministry of Water Resources(Under Construction) Yellow River Engineering Consulting Co.LtdZhengzhou 450003China

Hydrothermal technology (HT) has received much attention in recent years as a process to convert wet organic waste into *** aqueous phase (HTAP) produced by this process is still a burden and has become a bottleneck issue for HT process *** this study,we provide the?rst investigation of the HTAP characteristics,phytotoxicity,and their correlation with persulfate (PS)(PS,2.0 mmol/g TS)-assisted municipal sludge *** results showed that PS accelerated the hydrolysis of protein substances and increased the concentration of NH_(4)^(+)by 13.4%to 190.5%and that of PO_(4)^(3-)by 24.2%to 1103.7%in HTAP at hydrothermal temperatures of 120 to 240℃.PS can reduce the phytotoxicity of HTAP by reducing aldehydes,ketones,N heterocyclic compounds,and particle size and by increasing its humi?cation *** maximum values of the root length and biomass of pakchoi(Brassica chinensis L.) seedlings occurred when electrical conductivity was 0.2 mS/cm of *** work provided a new strategy for the selection and design of HTAP management strategies.

关键词： Hydrothermal technology Aqueous phase characteristics Pakchoi Seedlings Phytotoxicity

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Micropollutant removal and disinfection byproduct control by sequential peroxymonosulfate-UV treatment in water: A case study with sulfamethoxazole

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Journal of Environmental Sciences 2022年第7期34卷 141-150页

作者： Tian-Yang Zhang Yong-Shan Lu Zhen-Ning Luo Wen-Jun Sun Bin Xu Chen-Yan Hu Yu-Lin Tang Zheng-Yu Dong Xiao-Meng Ren State Key Laboratory of Pollution Control and Resource Reuse Key Laboratory of Yangtze Water EnvironmentMinistry of EducationCollege of Environmental Science and EngineeringTongji UniversityShanghai 200092China Shanghai Institute of Pollution Control and Ecological Security Shanghai 200092China School of Environment Tsinghua UniversityBeijing 100084China College of Environmental and Chemical Engineering Shanghai University of Electric PowerShanghai 200090China PLA Naval Medical Center Shanghai 200433China

UV/peroxymonosulfate(UV/PMS) advanced oxidation process has attracted significant attention for removal of micropollutants in water. However, during practical water treatment applications, the PMS treatment must be performed before the UV treatment to achieve full contact. In this study, sulfamethoxazole(SMX) was selected as the target micropollutant. Four different operational approaches, including UV alone, PMS alone, simultaneous UV/PMS and sequential PMS-UV, were compared for their differences in SMX removal and disinfection by-product(DBP) formation potentials during chlorine-driven disinfection. Among the four approaches, UV/PMS and PMS-UV achieved over 90% removal efficiencies for SMX without substantial differences. For raw water, the trichloronitromethane(TCNM) formation potential after treatment with PMS-UV was lower than that after UV/PMS treatment. The time interval over which the PMS-UV process was conducted had little effect on the final removal efficiency for SMX. However, a brief(5 min) pre-PMS treatment significantly reduced the TCNM formation potential and the genotoxicity from DBPs. The formation risk for TCNM during chlorination increased markedly with increasing PMS dosages, and the appropriate dosage under these experimental conditions was suggested to be 0.5–1.0 mmol/L. Under alkaline conditions, PMS-UV treatment can enhance SMX degradation as well as dramatically reduced the formation potentials for haloketones, haloacetonitriles and halonitromethanes. This study suggests that proper optimization of UV/PMS processes can remove SMX and reduce its DBP formation.

关键词： Peroxymonosulfate-UV(PMS-UV) Sulfamethoxazole(SMX) Disinfection by-products(DBPs) Operational approaches Water treatment

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3D-printed MoS_(2)/Ni electrodes with excellent electro-catalytic performance and long-term stability for dechlorination of florfenicol

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Journal of Environmental Sciences 2024年第3期137卷 420-431页

作者： Jianhui Xu Pengxu Wang Shenggui Chen Lei Li Dan Li Yunfei Zhang Qi Wu Jinhong Fan LumingMa School of Environment and Civil Engineering Dongguan University of TechnologyDongguan 523808China School of Art and Design Guangzhou Panyu PolytechnicGuangzhou 511483China National Engineering Research Center for Urban Pollution Control State Key Laboratory of Pollution Control and Resources ReuseCollege of Environmental Science and EngineeringTongji UniversityShanghai 200092China Dongguan Institute of Science and Technology Innovation Dongguan University of TechnologyDongguan 523808China School of Mechanical Engineering Dongguan University of TechnologyDongguan 523808China

Here,we report the production of 3D-printed MoS_(2)/Ni electrodes(3D-MoS_(2)/Ni)with longterm stability and excellent performance by the selective laser melting(SLM)*** a cathode,the obtained 3D-MoS_(2)/Ni could maintain a degradation rate above 94.0%for forfenicol(FLO)when repeatedly used 50 times in *** also found that the removal rate of FLO by 3D-MoS_(2)/Ni was about 12 times higher than that of 3D-printed pure Ni(3D-Ni),attributed to the improved accessibility of H^(*).In addition,the electrochemical characterization results showed that the electrochemically active surface area of the 3D-MoS_(2)/Ni electrode is about 3-fold higher than that of the 3D-Ni electrode while the electrical resistance is 4 times *** on tert-butanol suppression,electron paramagnetic resonance and triple quadrupole mass spectrometer experiments,a“dual path”mechanism and possible degradation pathway for the dechlorination of FLO by 3D-MoS_(2)/Ni were ***,we also investigated the impacts of the cathode potential and the initial pH of the solution on the degradation of ***,this study reveals that the SLM 3D printing technique is a promising approach for the rapid fabrication of high-stability metal electrodes,which could have broad application in the control of water contaminants in the environmental field.

关键词： 3D-print Electroreduction MoS_(2)/Ni Antibiotic Florfenicol

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