Environmental Science and Pollution Research最新文献

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Fabrication of a chitosan-grafted-4‑vinylpyridine/thiol-amine-HZSM-5 nanocomposite via casting method in adsorption of heavy cations from water systems: an evaluation of adsorption mechanism.
IF 5.8 3区 环境科学与生态学
Environmental Science and Pollution Research Pub Date : 2025-02-26 DOI: 10.1007/s11356-025-36146-4
Hadis Moridi, Hamideh Behroozikhah, Marzieh Talebi, Seyyed Ebrahim Mousavi, Saeed Abbasizadeh
{"title":"Fabrication of a chitosan-grafted-4‑vinylpyridine/thiol-amine-HZSM-5 nanocomposite via casting method in adsorption of heavy cations from water systems: an evaluation of adsorption mechanism.","authors":"Hadis Moridi, Hamideh Behroozikhah, Marzieh Talebi, Seyyed Ebrahim Mousavi, Saeed Abbasizadeh","doi":"10.1007/s11356-025-36146-4","DOIUrl":"https://doi.org/10.1007/s11356-025-36146-4","url":null,"abstract":"<p><p>This study presents the synthesis of low-silica HZSM-5 zeolite through a hydrothermal process. Subsequently, chitosan-grafted-4‑vinylpyridine/thiol-amine-HZSM-5 nanocomposites were fabricated using casting method for the effective removal of copper (Cu<sup>2+</sup>) and zinc (Zn<sup>2+</sup>) cations from aqueous systems. The fabricated cast nanocomposites were characterized using XRD, BET, XPS, FESEM, EDX, CHNS, FTIR, and TGA analyses. The simultaneous roles of amine (-NH<sub>2</sub>) and thiol (-SH) groups in enhancing the adsorption efficiency of Cu<sup>2+</sup> and Zn<sup>2+</sup> were thoroughly investigated. Additionally, the influence of key factors, including solution pH, contact time, adsorption temperature, and cation concentration, was systematically assessed. Equilibrium data fitting revealed the dominance of monolayer adsorption, as evidenced by the excellent fit of the Redlich-Peterson (R-P) and Langmuir isotherm models for both Cu<sup>2+</sup> and Zn<sup>2+</sup> cations. Examination of the kinetic experimental data indicated a close correspondence with the double-exponential model. The maximum adsorption capacity of the fabricated cast nanocomposite was determined to be 328.05 mg/g for Cu<sup>2+</sup> and 107.96 mg/g for Zn<sup>2+</sup> cations. Additionally, the fabricated cast nanocomposite demonstrated satisfactory regeneration capabilities after 9 cycles of desorption. In both synthetic binary and ternary systems, as well as in real wastewater, the adsorption process exhibited antagonistic behavior, indicating that the presence of one type of cation interfered with the adsorption of the other. The nanocomposite displayed a higher affinity for Cu<sup>2</sup>⁺ compared to Zn<sup>2</sup>⁺ cations, in both synthetic and real systems, demonstrating its potential for selective heavy metal removal.</p>","PeriodicalId":545,"journal":{"name":"Environmental Science and Pollution Research","volume":" ","pages":""},"PeriodicalIF":5.8,"publicationDate":"2025-02-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143497607","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Uptake, desorption, and hysteresis of heavy metals and PAHs with environmental concerns onto quick clays: effects of salinity and temperature.
IF 5.8 3区 环境科学与生态学
Environmental Science and Pollution Research Pub Date : 2025-02-26 DOI: 10.1007/s11356-025-36142-8
Alexandre Coulombe, Youssouf Djibril Soubaneh, Émilien Pelletier
{"title":"Uptake, desorption, and hysteresis of heavy metals and PAHs with environmental concerns onto quick clays: effects of salinity and temperature.","authors":"Alexandre Coulombe, Youssouf Djibril Soubaneh, Émilien Pelletier","doi":"10.1007/s11356-025-36142-8","DOIUrl":"https://doi.org/10.1007/s11356-025-36142-8","url":null,"abstract":"<p><p>This study investigated the sorption, desorption, and trapping of 9,10 dimethylated anthracene (DMA), copper (Cu), and cadmium (Cd) onto quick clay (QC), focusing on the effects of temperature, salinity, and their environmental relevance. Sorption isotherms were generated at different temperatures (4, 10, and 20 °C) and salinities (1 and 25 g·L<sup>-1</sup>). Thermodynamic parameters were calculated to elucidate the underlying mechanisms. Isosteric heat of adsorption (ΔH<sub>X</sub>) was determined to assess the heterogeneity of adsorption sites. Isotherms results were processed using the Freundlich model to assess sorption and hysteresis parameters of QC. Kinetic studies revealed a rapid initial uptake of DMA followed by a slower logarithmic phase, reaching equilibrium within 1440 min. The presence of the methyl group in DMA compared to non-methylated PAHs from other studies likely influences its adsorption rate. Temperature and salinity significantly impacted both the adsorption and desorption processes. Notably, Cd adsorption was nearly made ineffective with increasing salinity. Interestingly, Cu hysteresis index (HI) decreased from 1.57 to - 0.08 with increasing salinity, suggesting a shift from inner-sphere complexation at low salinity to outer-sphere complexation at high salinity. Conversely, DMA adsorption increased by 1.83-fold with increasing salinity, likely due to the salting-out effect. Thermodynamic analysis indicated a spontaneous and endothermic adsorption process driven by a positive entropy change (ΔS<sup>0</sup>). The ΔH<sub>X</sub> values supported physical adsorption as the dominant mechanism. The observed homogeneity in ΔH<sub>X</sub> values for DMA and Cd suggests consistent interaction with the clay surface, while the heterogeneity observed for Cu signifies a variation in adsorption site energies.</p>","PeriodicalId":545,"journal":{"name":"Environmental Science and Pollution Research","volume":" ","pages":""},"PeriodicalIF":5.8,"publicationDate":"2025-02-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143514305","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Evaluation of soil additives for stabilizing cadmium-contaminated paddy soil and its effect on the soil bacterial community.
IF 5.8 3区 环境科学与生态学
Environmental Science and Pollution Research Pub Date : 2025-02-25 DOI: 10.1007/s11356-025-36140-w
Wolde Tefera Beri, Weldemariam Seifu Gessessew, Shengke Tian
{"title":"Evaluation of soil additives for stabilizing cadmium-contaminated paddy soil and its effect on the soil bacterial community.","authors":"Wolde Tefera Beri, Weldemariam Seifu Gessessew, Shengke Tian","doi":"10.1007/s11356-025-36140-w","DOIUrl":"https://doi.org/10.1007/s11356-025-36140-w","url":null,"abstract":"<p><p>Given the significant contribution of contaminated rice to higher dietary Cd intake, agricultural scientists are concerned about reducing Cd contamination of paddy soils. A pot experiment was conducted to evaluate the influence of different soil additives (biochar, Fe-biochar, oyster shell, zeolite, yirang, and sepiolite) on Cd bioavailability and bacterial community in paddy soils. Application of 1% and 2% (w/w) soil additives significantly (p < 0.05) increased soil pH by 0.54-1.92 units and reduced DTPA-extractable Cd by 32, 29-60.84%, with biochar and oyster shell treatments having the highest effects. After adding soil additives, the geochemical fraction of Cd partially shifted to a more stable form, with the exchangeable fraction decreasing by 29.54-49.88% and the residual fraction increasing by 48.55-69.44%. The biochar and oyster shell treatments showed the greatest effectiveness of Cd stabilization, with the DTPA-extractable Cd content decreasing by 48.50-53.40% and 58.3-60.42%, respectively. Biochar and oyster shell treatments also significantly increased bacterial community diversity (p < 0.05), specifically increasing the relative abundance of Proteobacteria and Firmicutes while decreasing the abundance of Acidobacteria. The RDA analysis revealed that Cd bioavailability, pH, SOM, and CEC were the most influential factors on the soil bacterial community. The results of this study suggest that the use of biochar and oyster shells has the potential to minimize Cd bioavailability and improve the microecosystem of Cd-contaminated rice soils.</p>","PeriodicalId":545,"journal":{"name":"Environmental Science and Pollution Research","volume":" ","pages":""},"PeriodicalIF":5.8,"publicationDate":"2025-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143490108","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Engine performance, combustion and emission studies of calcined chicken eggshell catalyzed marine fish waste oil biodiesel and their blends.
IF 5.8 3区 环境科学与生态学
Environmental Science and Pollution Research Pub Date : 2025-02-25 DOI: 10.1007/s11356-025-36128-6
Sandesh Suresh Karkal, Akil Salim Jamadar, Tanaji G Kudre
{"title":"Engine performance, combustion and emission studies of calcined chicken eggshell catalyzed marine fish waste oil biodiesel and their blends.","authors":"Sandesh Suresh Karkal, Akil Salim Jamadar, Tanaji G Kudre","doi":"10.1007/s11356-025-36128-6","DOIUrl":"https://doi.org/10.1007/s11356-025-36128-6","url":null,"abstract":"<p><p>The current research is primarily oriented on determining the influence of marine fish waste (MFW) oil biodiesel catalyzed with calcined eggshell heterogeneous base catalyst (ESBD) and its blends on two-cylinder four-stroke diesel engine. The physicochemical and fuel properties such as free fatty acid content (0-0.25%), acid value (0-0.5 mg KOH/g), viscosity (3.33-5.88 cP), flash point (57-115 °C), calorific value (39,287- 42,906 kJ/kg), cold filter plugging point (8- -11 °C) and cetane number (33.9-57.8) for B5, B20, and B50 blends of ESBD authenticates their application in the diesel engine. The B5, B20, B50, and B80 ESBD-diesel fuel blends exhibited brake specific fuel consumption value in the 0.21-0.23 kgs/kWh range and brake thermal efficiency in 31.59-36.29% range at 100% engine load, slightly higher than diesel. The B80 ESBD blends displayed the highest in-cylinder pressure (55.90 bars) and heat release rate (69.82 J/deg). Across all ESBD blends, 59.34-70.32%, 2.57-6.90%, and 12.40-27.35% reductions in CO, CO<sub>2</sub>, and HC emissions were observed. B50 ESBD blend showed a 69.23% and 27.35% reduction in CO and HC emissions than diesel, respectively. The B80 blend showed a 19.51% increase in O<sub>2</sub> emission than diesel. The key finding of the current research unveils that the exploitation of ESBD blends in diesel engines could aid in better combustion and reduce greenhouse gas emissions. The exploitation of MFWs for biodiesel production using calcined eggshell catalyst would aid in overcoming waste disposal issues, reduce environmental pollution, and also provide additional revenue to fish farmer communities and the fisheries sector.</p>","PeriodicalId":545,"journal":{"name":"Environmental Science and Pollution Research","volume":" ","pages":""},"PeriodicalIF":5.8,"publicationDate":"2025-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143490156","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Sodium persulfate activated by solar radiation to generate sulfate anion radicals for degradation of the insecticide thiamethoxam in water.
IF 5.8 3区 环境科学与生态学
Environmental Science and Pollution Research Pub Date : 2025-02-25 DOI: 10.1007/s11356-025-36126-8
Keila Cardoso Teixeira, Murielly Fernanda Ribeiro Bihain, Anna Karla Dos Santos Pereira, Douglas Henrique Pereira, Grasiele Soares Cavallini
{"title":"Sodium persulfate activated by solar radiation to generate sulfate anion radicals for degradation of the insecticide thiamethoxam in water.","authors":"Keila Cardoso Teixeira, Murielly Fernanda Ribeiro Bihain, Anna Karla Dos Santos Pereira, Douglas Henrique Pereira, Grasiele Soares Cavallini","doi":"10.1007/s11356-025-36126-8","DOIUrl":"https://doi.org/10.1007/s11356-025-36126-8","url":null,"abstract":"<p><p>The degradation of the neonicotinoid insecticide Thiamethoxam (TMX) by the oxidizing agent sodium persulfate (SP) activated by H<sub>2</sub>O<sub>2</sub>, peracetic acid (PAA), pH, solar radiation, heating and sonication, also using combinations between the activators was evaluated. The optimal dosage of SP in the process was 10 mmol L<sup>-1</sup> and at this concentration the oxidants hydrogen peroxide and PAA did not contribute to the increase in TMX degradation even when exposed to solar radiation. Under conditions of greater acidity and exposure to solar radiation, the degradation efficiency of TMX increased and continued for days, even with sample storage in the absence of light. The process promoted a drastic reduction in the pH of the medium, meaning that it always occurred at an acidic pH, regardless of the initial pH. The degradation kinetics of TMX can be described by a Pseudo-second order model with higher reaction rate in acidic medium. Analysis employing a sequestering agent (isopropyl alcohol) indicated that the degradation efficiency of the process can be attributed to the generation of HO<sup>•</sup> and SO<sub>4</sub><sup>-•</sup> radicals. Ecotoxicological analyses show greater toxicity of the sample after TMX degradation.</p>","PeriodicalId":545,"journal":{"name":"Environmental Science and Pollution Research","volume":" ","pages":""},"PeriodicalIF":5.8,"publicationDate":"2025-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143497657","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Source analysis of the particle-associated oxidative potential and polycyclic aromatic compounds in Shenyang, China.
IF 5.8 3区 环境科学与生态学
Environmental Science and Pollution Research Pub Date : 2025-02-25 DOI: 10.1007/s11356-025-36129-5
Siwei Wei, Zidan Zhang, Yuta Kamiya, Takeshi Ohura, Takayuki Kameda
{"title":"Source analysis of the particle-associated oxidative potential and polycyclic aromatic compounds in Shenyang, China.","authors":"Siwei Wei, Zidan Zhang, Yuta Kamiya, Takeshi Ohura, Takayuki Kameda","doi":"10.1007/s11356-025-36129-5","DOIUrl":"https://doi.org/10.1007/s11356-025-36129-5","url":null,"abstract":"<p><p>In this study, a dithiothreitol (DTT) assay was performed to assess the oxidative potential (OP) induced by atmospheric particulate matter in Shenyang, China, in the winter and summer of 2015. OP sources were identified by using the positive matrix factorization (PMF) model, and the relationships between components of the total suspended particulate (TSP), including different types of polycyclic aromatic compounds, and the OP were investigated. The volume-based DTT consumption rate (DTT<sub>v</sub>) was used as an OP indicator. During sampling, the average daily TSP concentration and DTT<sub>v</sub> in Shenyang City were 142 µg/m<sup>3</sup> and 1304 pmol/min/m<sup>3</sup>, respectively, and they markedly increased in the winter compared with the summer. The PMF model identified the following sources for the OP induced by TSP: automobile exhaust and road dust (5.0%), biomass burning (31.0%), coal combustion (10.6%), soil (21.1%), diesel combustion (13.4%), and secondary pollution (19.0%). Furthermore, the source analysis revealed that biomass burning was the largest source of oxygenated and nitrated polycyclic aromatic hydrocarbons and that coal combustion was the largest source of polycyclic aromatic hydrocarbons.</p>","PeriodicalId":545,"journal":{"name":"Environmental Science and Pollution Research","volume":" ","pages":""},"PeriodicalIF":5.8,"publicationDate":"2025-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143490244","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Prioritization of water-energy nexus scenarios using the development of D-number theory in multi-criteria analysis method.
IF 5.8 3区 环境科学与生态学
Environmental Science and Pollution Research Pub Date : 2025-02-25 DOI: 10.1007/s11356-025-36105-z
Parvin Golfam, Parisa-Sadat Ashofteh
{"title":"Prioritization of water-energy nexus scenarios using the development of D-number theory in multi-criteria analysis method.","authors":"Parvin Golfam, Parisa-Sadat Ashofteh","doi":"10.1007/s11356-025-36105-z","DOIUrl":"https://doi.org/10.1007/s11356-025-36105-z","url":null,"abstract":"<p><p>The dam and hydropower plant in the Marun basin located in southwestern Iran have faced severe challenges in recent years in providing agricultural irrigation water and domestic electricity due to the adverse effects of climate change and population growth. To overcome these challenges, 11 strategies as water-energy nexus scenarios were discussed. For this purpose, first, the effects of climate change on temperature and precipitation variables were examined in three concentration pathway (RCP) RCP2.6, RCP4.5, and RCP8.5 from fifth report of International Panel on Climate Change (IPCC). Then, the inflow to the reservoir and the irrigation water required in the future time period were calculated using the artificial neural network and Cropwat models, respectively. The water system was modeled in the water evaluation and planning (WEAP) model, and the energy system was modeled in the low emissions analysis platform (LEAP) model and then coupled with each other. Considering the field situation of the Marun basin, 11 water-energy nexus (WEN) scenarios and nine nexus indexes for evaluating the scenarios were proposed by the expert group. In order to select the best scenario in the future time interval, the ordinal priority approach (OPA) decision-making method integrated with D-number theory was used. The results reveal that the maximum water-energy nexus sustainability index under RCP 2.6, RCP 4.5, and RCP 8.5 scenarios are 31.56, 34.3, and 34.9 for the WEN4 (i.e., reducing the weeds and vegetables cultivation area by 30%), WEN7 (i.e., reduction in the grain maize and vegetables cultivation area each by 5% units and increasing forage crops cultivation area by 10% units), and WEN11 (i.e., decreasing household electricity consumption intensity by 20% throughout increasing electricity tariffs) scenarios, respectively. Also, the results of the OPA method show that the most important index in evaluating the nexus scenarios is the energy sector sustainability index with a weight of 0.142, and the best nexus scenario is the WEN7 scenario with a final weight of 0.189. The comprehensive decision-making process within the comprehensive framework of the water-energy nexus under the impact of climate change, presented in this study, can easily be adopted and applied in other river basins because of verified tools in water and energy, explicit steps, and available initial data.</p>","PeriodicalId":545,"journal":{"name":"Environmental Science and Pollution Research","volume":" ","pages":""},"PeriodicalIF":5.8,"publicationDate":"2025-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143497614","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Synthesis of iron nanoparticles using iron recovered from rust: An application for the catalytic degradation of phenols.
IF 5.8 3区 环境科学与生态学
Environmental Science and Pollution Research Pub Date : 2025-02-25 DOI: 10.1007/s11356-025-36114-y
Shalu Rawat, Kunwar Raghvendra Singh, Jiwan Singh
{"title":"Synthesis of iron nanoparticles using iron recovered from rust: An application for the catalytic degradation of phenols.","authors":"Shalu Rawat, Kunwar Raghvendra Singh, Jiwan Singh","doi":"10.1007/s11356-025-36114-y","DOIUrl":"https://doi.org/10.1007/s11356-025-36114-y","url":null,"abstract":"<p><p>Iron nanoparticles are reported to be synthesised by green route to reduce adverse environmental impacts as well as to reduce the synthesis cost. The present study explores a secondary source of iron, i.e. waste iron rust to prepare iron nanoparticles via green route. The iron nanoparticles synthesised this way were amorphous. The synthesised nanoparticles were used as a heterogeneous catalyst for the purpose of phenol and p-nitrophenol (PNP) degradation in their aqueous solutions by Fenton degradation. More than 95% of phenol and PNP was removed within 120 min using 0.25 g/L amount of catalyst. The degradative removal of both the pollutants was found effective up to pH 6. Pseudo-second-order kinetic was fitted best the degradation data of the pollutants. The dissolution of catalyst iron by corrosion was analysed by testing the amount of iron leached and dissolved into the aqueous solution of phenol and PNP; maximum concentration of total iron was found 11.10 mg/L in phenol and 13.53 mg/L in PNP. The chemical oxygen demand (COD) was decreased to 40 mg/L from 336 mg/L for phenol and COD of PNP solution was decreased up to 56 mg/L from 384 mg/L.</p>","PeriodicalId":545,"journal":{"name":"Environmental Science and Pollution Research","volume":" ","pages":""},"PeriodicalIF":5.8,"publicationDate":"2025-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143497659","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Investigating critical node identification in water networks through distance Laplacian energy centrality. 通过距离拉普拉卡能量中心性研究水网络中关键节点的识别。
IF 5.8 3区 环境科学与生态学
Environmental Science and Pollution Research Pub Date : 2025-02-25 DOI: 10.1007/s11356-025-36118-8
Tamilselvi Gopalsamy, Vasanthi Thankappan, Sundar Chandramohan
{"title":"Investigating critical node identification in water networks through distance Laplacian energy centrality.","authors":"Tamilselvi Gopalsamy, Vasanthi Thankappan, Sundar Chandramohan","doi":"10.1007/s11356-025-36118-8","DOIUrl":"https://doi.org/10.1007/s11356-025-36118-8","url":null,"abstract":"<p><p>Identifying influential nodes in water distribution networks is essential for ensuring efficient and reliable operations. This paper introduces a novel centrality measure called distance Laplacian energy centrality (DLC), designed to evaluate node importance by combining the network's topological structure and hydraulic properties into a unified framework. The DLC measure quantifies the criticality of a node by assessing its influence on the network's Laplacian energy, which represents the network's characteristics, and distance metrics that reflect how the removal of the node affects network connectivity and flow. The DLC is applied to real-world water distribution networks and compared with traditional centrality measures such as betweenness, degree, closeness, eigenvector, and Laplacian centrality. By analyzing the effect of node deletion on graph connectivity, the DLC measure offers a more precise identification of critical nodes. Extensive experiments conducted on four heterogeneous water networks validate that DLC not only surpasses traditional measures in performance but also increases robustness and optimized network functionality. The experiments showed that the networks are strengthened based on critical nodes identified by DLC which demonstrated significant improvements in connectivity. The comparative analysis using statistical plots and charts reveals the power of the DLC technique in efficient water flow and reducing vulnerability to disruptions compared to traditional measures. The results confirm that DLC effectively captures both local and global properties of the network, providing greater precision in identifying influential nodes to ensure optimal water flow and reliability. Moreover, DLC's superiority in pinpointing critical nodes with greater accuracy reinforces its utility over existing methods.</p>","PeriodicalId":545,"journal":{"name":"Environmental Science and Pollution Research","volume":" ","pages":""},"PeriodicalIF":5.8,"publicationDate":"2025-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143490131","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Reinforcement and remediation of Ni contaminated sludge by EDTA grouting vacuum preloading with varying loading model.
IF 5.8 3区 环境科学与生态学
Environmental Science and Pollution Research Pub Date : 2025-02-25 DOI: 10.1007/s11356-025-36113-z
Xianfeng Huang, Wenqian Li, Zhanou Chen, Peng Wang, Hongzhi Liu, Hao Qiao
{"title":"Reinforcement and remediation of Ni contaminated sludge by EDTA grouting vacuum preloading with varying loading model.","authors":"Xianfeng Huang, Wenqian Li, Zhanou Chen, Peng Wang, Hongzhi Liu, Hao Qiao","doi":"10.1007/s11356-025-36113-z","DOIUrl":"https://doi.org/10.1007/s11356-025-36113-z","url":null,"abstract":"<p><p>The reinforcement and remediation of contaminated sludge is consistently a key research point. This paper proposes a grouting vacuum preloading method to enhance the soil with high water content and to remove heavy metal contaminants of Ni in the soil. Ethylenediaminetetraacetic acid (EDTA) is injected to leach the Ni-contaminated soil under step loading vacuum pressure. Various indicators, including soil settlement, discharged water, water content, penetration resistance, Ni<sup>2+</sup> content, and Ni<sup>2+</sup> removal rate, are analyzed. Test results show that both EDTA grouting and step loading have significant positive effects on the soil reinforcement and remediation. When the soil initial water content is below 100%, the soil water content is reduced by 67.5% and the Ni<sup>2+</sup> removal rate reaches 97.34% using vacuum preloading combined with EDTA grouting and one-time loading. For soil with an initial water content of up to 120%, applying a step loading of 40-80 kPa increases the Ni<sup>2+</sup> removal rate to 97.9% from 91.6% corresponding to one-time loading, ultimately restoring the soil to an unpolluted state. These findings can serve as a valuable reference for in-situ reinforcement and remediation of Ni-contaminated soil with high water content.</p>","PeriodicalId":545,"journal":{"name":"Environmental Science and Pollution Research","volume":" ","pages":""},"PeriodicalIF":5.8,"publicationDate":"2025-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143490134","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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