Environmental Nanotechnology, Monitoring and Management最新文献

{"title":"Sustainable dual-stage treatment of textile wastewater using Ti-Ti electrocoagulation and activated carbon for water reuse: a comparative study of synthetic and industrial effluent","authors":"Sahaya Leenus Sebastian ,&nbsp;Jovitha Jane David ,&nbsp;M.S. Asath Murphy ,&nbsp;Sasirekha Vanarajan ,&nbsp;Jegathambal Palanichamy ,&nbsp;Kavitha Subbiah ,&nbsp;Parameswari Kalivel","doi":"10.1016/j.enmm.2026.101124","DOIUrl":"10.1016/j.enmm.2026.101124","url":null,"abstract":"<div><div>This study evaluates the efficacy of a dual-stage treatment method for Coralene Navy Blue 3G dye and Small-Scale Dyeing Industry (SSI) effluent that uses titanium (Ti-Ti) electrodes in electrocoagulation (EC) followed by activated carbon (AC) filtration. In recognition of its stability, resistance to corrosion, and low amount of secondary pollutants, titanium was chosen. To optimise Colour Removal Efficiency (CRE), key operational parameters such as dye concentration, pH, voltage, reaction time, and electrolyte concentration were optimised. For optimal conditions (110 mg/L, pH 7, 15 V, 15 min), dye 3G showed a 93% CRE, which improved to 99.6% following AC treatment. Similarly, SSI effluent acquired 98.1% CRE under optimal conditions (pH 7.1, 10 V, 10 min), which increased to 99.49% after AC. COD, BOD, TDS, and TSS levels were all substantially reduced by the method used. FT-IR and HPLC studies on the treated dye solution/effluent indicated that the chemical degradation and compositional changes in pollutants, whereas ICP-OES confirmed effective titanium reduction to permissible levels (0.001 mg/L for dye 3G; 0.22 mg/L for SSI effluent). SEM, XPS, and EDAX investigations proved different sludge morphologies and chemical changes. The energy usage for dye 3G was higher (1.11 kWh/m³) than for SSI effluent (0.553 kWh/m³). Overall, Ti-Ti EC followed by AC filtration offers a cost effective, scalable, and renewable approach for textile wastewater treatment and reuse.</div></div>","PeriodicalId":11716,"journal":{"name":"Environmental Nanotechnology, Monitoring and Management","volume":"25 ","pages":"Article 101124"},"PeriodicalIF":0.0,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146170313","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Evaluating groundwater vulnerability to seawater intrusion in the coastal region of Bangladesh","authors":"Paramalakshmi ,&nbsp;A.H.M. Selim Reza ,&nbsp;Roni Roy ,&nbsp;Tirthojit Barman ,&nbsp;Piyas Chandra Sarker ,&nbsp;Abu Shamim Khan","doi":"10.1016/j.enmm.2026.101130","DOIUrl":"10.1016/j.enmm.2026.101130","url":null,"abstract":"<div><div>In Bangladesh’s southwest coastal belt, including Khulna District, seawater intrusion poses a serious threat to groundwater quality. This study evaluates groundwater vulnerability using hydrochemical analysis of 30 (thirty) samples to detect salinity levels and potential intrusion. Results show significant salinization in parts of the study area, with electrical conductivity (EC) up to 3016 µS/cm, total dissolved solids (TDS) up to 1930 mg/L, and salinity up to 0.57 ppt. Most samples are mixed NaCl and NaHCO₃ water types, with Na⁺ as the dominant cation and Cl⁻ and HCO₃⁻ as main anions. Correlation analysis reveals strong relationships between EC and Cl⁻ (R2 = 0.975) and Na⁺ (R2 = 0.835), identifying them as key indicators of seawater intrusion. According to WHO drinking water guidelines, sodium concentrations (65.20–2406.92 mg/L) indicate 17% of the area is highly vulnerable. Chloride levels (10.30–987.99 mg/L) classify 13% as moderately vulnerable and 10% as highly vulnerable, while bicarbonate levels (245.30–668.85 mg/L) mostly meet DOE standards. Trace elements in most of the samples such as As (0.2–0.38 mg/L), Fe (0.00–3.39 mg/L), and Mn (0.00–0.65 mg/L) exceed permissible limits. Salinity levels have risen sharply, linked to reduced surface water flow and rising sea levels during dry season. GALDIT model (groundwater level, aquifer type, hydraulic conductivity, distance from shore, intrusion impact, and aquifer thickness), indicate that vulnerability increases where the water table lies near or below sea level, especially near tidal rivers. Based on the [Cl⁻]/[HCO₃⁻ + CO₃²⁻] ratio, Chandkhali Union (3.56) showed the highest vulnerability, while Dumuria Union (0.02) had the lowest. The vulnerability map highlights the southern region—particularly Laskar, Chandkhali, and Garuikhali Unions in Paikgachha—as most at risk, while northeastern areas like Khulna Sadar and Dumuria Upazilas show low to moderate susceptibility. These findings provide crucial guidance for managing freshwater aquifers and preventing salinization in coastal Bangladesh.</div></div>","PeriodicalId":11716,"journal":{"name":"Environmental Nanotechnology, Monitoring and Management","volume":"25 ","pages":"Article 101130"},"PeriodicalIF":0.0,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146170331","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Long-term effect of aluminum oxide nanoparticles on activated sludge performance in sequencing batch reactors","authors":"Nina Doskocz,&nbsp;Katarzyna Affek,&nbsp;Monika Załęska-Radziwiłł","doi":"10.1016/j.enmm.2025.101096","DOIUrl":"10.1016/j.enmm.2025.101096","url":null,"abstract":"<div><div>Nanoparticles (NPs) have raised global concerns due to their extensive use and detrimental impacts on ecosystems. While wastewater treatment plants (WWTPs) are viewed as potential sources of nanocompounds in the environment, the influence of aluminum oxide nanoparticles (Al₂O₃NPs) on wastewater treatment remains uncertain. This study aimed to explore the long-term effects of wastewater-borne Al₂O₃NPs and their bulk counterparts on the effectiveness of pollutant removal within sequencing batch reactors (SBRs), activated sludge performance, internal biological activity/viability, and microbial community diversity and structure. The presence of Al₂O₃NPs was observed to induce alterations in the removal efficiency of COD, <span><math><mrow><msubsup><mrow><mi>N</mi><mi>H</mi></mrow><mrow><mn>4</mn></mrow><mo>+</mo></msubsup><mo>-</mo></mrow></math></span> N, and SOP from wastewater, as well as impacting the nitrification process during prolonged exposure. Al₂O₃NPs in wastewater accumulated in the sludge, affecting its morphology and diminishing microbial viability and biological activity. Additionally, high throughput sequencing of 16S rRNA indicated that Al₂O₃NPs could impact on the microbial richness and diversity of activated sludge in the SBR. In contrast, wastewater containing bulk counterparts did not negatively influence the capacity of wastewater treatment plants. This research provides novel and crucial insights into the effects of Al₂O₃NPs on the biological wastewater treatment process, holding significance for risk assessment procedures.</div></div>","PeriodicalId":11716,"journal":{"name":"Environmental Nanotechnology, Monitoring and Management","volume":"24 ","pages":"Article 101096"},"PeriodicalIF":0.0,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144908542","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Next-generation remediation tools: A review on cyclodextrin-based nanocomposites","authors":"Alka Rai ,&nbsp;Amarpreet K. Bhatia ,&nbsp;Sunitha B. Mathew ,&nbsp;Sunita Sanwaria ,&nbsp;Ajaya Kumar Singh ,&nbsp;Ravin Jugade","doi":"10.1016/j.enmm.2025.101093","DOIUrl":"10.1016/j.enmm.2025.101093","url":null,"abstract":"<div><div>Water contamination has attracted considerable attention due to its potentially devastating consequences on human health and the environment. Therefore, cutting-edge remediation technology development becomes a crucial environmental concern. A wide variety of techniques, such as adsorption, ion exchange, electrolysis, membrane process, reverse osmosis, and coagulation, have been used to remove hazardous heavy-metal-ions, organic contaminants, and dyes from water. Adsorptive confiscation of water toxicants based on functionalized polymers, biopolymers and metal organic frameworks is the key to wastewater treatment. Functionalization of these materials aim at three major objectives: (i) enhancing adsorption capacities of the material, (ii) improve selectivity towards desired pollutant, (iii) recyclability and reusability of material in multiple cycles. Recent literature has revealed that the cyclodextrin-derived nanocomposites have been identified as the most promising adsorbents for the removal of contaminants among the different conventional adsorbing materials. The structural and functional composition of cyclodextrin has shown a potential to meet all the three objectives making it a promising material in native form as well as modified forms for water detoxification. This article presents anup-to-date compilation of recent advances in the synthesis and study of adsorbents based on Cyclodextrin nanocomposites for the remediation of a wide range of contaminants. This review has been primarily focused onheavy-metal-ions, organic pollutants and dyes removal studies. Finally, this review may serve as a springboard for further study and provide insight into potential future developments and obstacles concerning Cyclodextrin nanocomposites in the role of adsorbents.</div></div>","PeriodicalId":11716,"journal":{"name":"Environmental Nanotechnology, Monitoring and Management","volume":"24 ","pages":"Article 101093"},"PeriodicalIF":0.0,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144864410","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Environmentally-friendly activated carbon for the removal of antibiotic-resistant bacteria removal from hospital wastewater","authors":"Ederaldo Luiz Beline ,&nbsp;Alexandre Amado de Moura ,&nbsp;Alexandre Diório ,&nbsp;Anna Carla Ribeiro ,&nbsp;Benício Alves de Abreu Filho ,&nbsp;Daniel Tait Vareschini ,&nbsp;Débora Federici dos Santos ,&nbsp;Leidiane Silva Vasconcelos ,&nbsp;Rosângela Bergamasco ,&nbsp;Maria Angélica Simões Dornellas de Barros","doi":"10.1016/j.enmm.2025.101088","DOIUrl":"10.1016/j.enmm.2025.101088","url":null,"abstract":"<div><div>The rise of antibiotic-resistant bacteria has driven research into natural antimicrobial alternatives. Allicin, a compound formed in freshly crushed garlic cloves, exhibits antibacterial properties but suffers from poor stability in aqueous environments. That is why this study aimed to explore the synthesis and characterization of allicin-modified activated carbon (AMAC) and evaluate its potential application removing <em>Escherichia coli</em> from synthetic hospital wastewater (HWW). Sugarcane bagasse (SB) provided by a local Brazilian alcohol mill was transformed into activated carbon (SBAC) through a hydrothermal process (heating at 200 °C for 24 h followed by activation at 450 °C for 10 min). Allicin extract was obtained from fresh garlic and impregnated onto the SBAC surface, resulting in AMAC with 105 µm mean diameter. The materials were characterized (FT-IR, Raman and N₂-physisorption), revealing significant structural and surface modifications. The antibacterial activity of allicin against <em>E. coli</em> was assessed through minimum inhibitory concentration (MIC), minimum bactericidal concentration (MBC) trials and disk diffusion, demonstrating effective bacterial growth inhibition, as expected. Adsorption assays showed that AMAC enhanced <em>E. coli</em> removal efficiency in synthetic HWW by 3 %, compared to the AMAC in deionized and sterile water. This improvement was attributed to the positive interactions and synergistic effects between AMAC and the wastewater constituents. In other words, it means that AMAC can be used in the <em>E. coli</em> removal even in presence of organic and inorganic molecules without any loss of efficiency. The study also highlights the environmentally friendly synthesis process of AMAC and its potential as a sustainable solution for treating HWWs without the use of antibiotics, thus avoiding the potential release of pharmaceutical compounds into the environment. The results suggest that AMAC could be a viable alternative for enhancing the removal of antibiotic-resistant bacteria from contaminated water sources, contributing to public health and environmental protection.</div></div>","PeriodicalId":11716,"journal":{"name":"Environmental Nanotechnology, Monitoring and Management","volume":"24 ","pages":"Article 101088"},"PeriodicalIF":0.0,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144661988","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Synthesis of 2-mercaptonicotinic acid capped silver nanoparticles for sensing of thiram and their nanoaggregates for detection of Fe3+ and Cu2+ ions","authors":"Jamila Husain Kagdi ,&nbsp;Vaibhavkumar N. Mehta ,&nbsp;Sanjay Jha ,&nbsp;Tae Jung Park ,&nbsp;Suresh Kumar Kailasa","doi":"10.1016/j.enmm.2025.101100","DOIUrl":"10.1016/j.enmm.2025.101100","url":null,"abstract":"<div><div>Excessive use of pesticides and heavy metals can pose serious risks to human health and ecological balance. These pollutants persist in soil and water and bioaccumulate in organisms, leading to metabolic disruption and environmental damage. In this situation, simple, quick and inexpensive sensing platforms are essentially required to assay both pesticide residues and metal ions in environmental samples at the same time. This work represents the development of a dual-responsive colorimetric sensing probe for the detection of thiram using silver nanoparticles (AgNPs) modified with 2-mercapto-nicotinic acid (2-MNA) (AgNPs@2-MNA) and further AgNPs@2-MNA-thriam nanoaggregates were used for parallel detection Fe³⁺ and Cu²⁺ ion, respectively. The characteristic surface plasmon resonance (SPR) of AgNPs@2-MNA was remarkably shifted upon the addition of thiram, thereby forming AgNPs@2-MNA-thiram nanoaggregates, which was further used for the detection of Fe³⁺ and Cu²⁺ ions via complex-assisted sensing mechanism. The assay came out with good linear ranges and the lower limits of detection as calculated for thiram, Fe³⁺ and Cu²⁺ are 0.474, 0.411 and 0.487 µM, respectively. This colorimetric assay was successfully validated for the detection of thiram and two metal ions (Fe³⁺ and Cu²⁺) in real environmental samples, highlighting its potential for field-deployable environmental monitoring.</div></div>","PeriodicalId":11716,"journal":{"name":"Environmental Nanotechnology, Monitoring and Management","volume":"24 ","pages":"Article 101100"},"PeriodicalIF":0.0,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145104872","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Sorption of hexavalent chromium ion onto natural swelling clay and acidified clay as a nano adsorbent: Kinetic and thermodynamic study","authors":"Niraka Blaise ,&nbsp;Aguiza Abai Emmanuel ,&nbsp;Mohamed Oubaouz ,&nbsp;El Mostafa Erradi ,&nbsp;Cherrat Ayoub ,&nbsp;Kofa Guillaume Patrice ,&nbsp;Ndi Koungou Sylvère ,&nbsp;Hambate Gomdje Valery ,&nbsp;Abdelilah Chtaini","doi":"10.1016/j.enmm.2025.101098","DOIUrl":"10.1016/j.enmm.2025.101098","url":null,"abstract":"<div><div>Natural clay (NC) from Makabaye (Far North Cameroon) was pre-treated according to the stocks method and the resulting powder was subjected to acid treatment (HCl at 0.5 M) to obtain acidified clay (AC) material. These materials (NC and AC) were subjected to morphological and structural characterization and then to successive adsorption (in batch mode) and desorption studies for hexavalent chromium until AC lost its adsorptive properties. These analyses showed the exfoliation of the clay after acidification. The influence of experimental parameters such as the variation in contact time, the mass of adsorbent, the pH of the solutions, the initial concentration of Cr (VI) ions were studied showed that each of the parameters influences the adsorption process. The results showed that adsorption equilibrium was reached after 20 min with both adsorbents. The optimum quantities of Cr (VI) ions adsorbed by the adsorbent were obtained for masses of 0.100 g. Maximum adsorption of Cr (VI) ions was obtained at pH = 3 with both adsorbents. This work also showed that by keeping the optimum parameters fixed, the quantity of chromium ions adsorbed increased significantly before stabilising at 15 mg/L with the two clay samples. Under these same optimum conditions, the maximum quantity adsorbed was obtained with the acidified clay and the natural clay, i.e. 29.41 mg/g and 27.78 mg/g respectively. The application of adsorption isotherms has shown that the Langmuir model (R² = 0.980 with AC and R² = 0.971 with NC) and Dubinin-Radushkevich model (R² = 0.917 with AC and R² = 0.991 with NC) better describes the adsorption mechanism of Cr (VI) ions than those of Freundlich and Temkin model. The kinetic study has shown that the pseudo-second order equation satisfactorily describes the adsorption mechanism (R² = 0.998 with AC and R² = 0.995 with NC). The thermodynamic study showed that the adsorption of Cr (VI) on the two adsorbents is spontaneous, exothermic with NC and endothermic with AC. The desorption study showed that the adsorbent (AC) could be regenerated to 98.32 % after 70 min under agitation at 150 rpm for a concentration of 1.5 M EDTA. The reused adsorbent showed desorption percentages ranging from 98.88 % (after the 1st recycling) to 85.56 % (after the 6th recycling). A very rapid decrease in the desorption of chromium by AC was observed from the 7th cycle of reuse (57.68 %) until the complete loss of this desorption at the 10th cycle (0.12 %).</div></div>","PeriodicalId":11716,"journal":{"name":"Environmental Nanotechnology, Monitoring and Management","volume":"24 ","pages":"Article 101098"},"PeriodicalIF":0.0,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145044373","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Quantifying silver and gold nanoparticles in water via carbazole fluorescence quenching: A simple and economical approach","authors":"Rodrigo Nicolás Núñez ,&nbsp;Alicia Viviana Veglia ,&nbsp;Natalia Lorena Pacioni","doi":"10.1016/j.enmm.2025.101084","DOIUrl":"10.1016/j.enmm.2025.101084","url":null,"abstract":"<div><div>The fluorescence quenching of carbazole and carbazole@2-hydroxypropyl-β-cyclodextrin complex was evaluated in water as an analytical strategy for the quantification of six different silver and gold nanoparticles with either gallic acid, citrate, or p-(2-hydroxyethoxy) benzoic acid as ligands. The free carbazole is more sensitive to the analyzed metal nanoparticles with detection limits in the picomolar level (e.g., 0.106 pM for citrate-stabilized silver nanorods (AgNR) and 34.5 pM for citrate-stabilized silver nanospheres (AgNP_c)) compared to the cyclodextrin-complexed carbazole (e.g., 0.200 pM for AgNR to insensitive for AgNP_c). The recovery assays in spiked tap water and surface river water for all the analyzed nanoparticles were between 90 % and 112 % with 95 % confidence. The proposed method is an excellent alternative to more sophisticated methodologies for accurately quantifying silver and gold nanoparticles in aqueous systems.</div></div>","PeriodicalId":11716,"journal":{"name":"Environmental Nanotechnology, Monitoring and Management","volume":"24 ","pages":"Article 101084"},"PeriodicalIF":0.0,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144291588","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Green conductive paper derived from sago pulp of Southeast Sulawesi based on magnetic nanocomposite of Fe3O4/carbon nanofibers for phenol adsorption","authors":"Alimin Alimin ,&nbsp;Sri Juari Santosa ,&nbsp;Akrajas Ali Umar ,&nbsp;Rahmayanti Rahmayanti ,&nbsp;Alham Alham","doi":"10.1016/j.enmm.2025.101090","DOIUrl":"10.1016/j.enmm.2025.101090","url":null,"abstract":"<div><div>A green conductive magnetic nanocomposite paper that has been synthesized by decorating carbon nanofibers (CNFs) with Fe₃O₄ nanoparticles (Fe₃O₄/CNFs) and mixed with sago pulp as phenol adsorbents has been investigated. The paper was synthesized using sago pulp waste from the sago farmer’s community. To produce cellulose paper, Sago pulp was treated mechanically and chemically through dehemicellulose and delignification techniques. Fe₃O₄ was synthesized by ultrasonication of iron sand in NaOH solution (8 M) for 120 min at 70 °C. The nanocomposite of Fe₃O₄/CNFs was prepared by ultrasonication Fe₃O₄ and CNFs in water. The nanocomposite paper was finally prepared by mixing sago’s cellulose and polyvinyl alcohol (PVA) with ultrasonication, followed by solvent casting drying. The phase crystallinity of the paper was evaluated via X-ray Diffraction (XRD) and Fourier Transform infrared (FTIR) spectroscopy. The phenol’s sensing and adsorption kinetic properties over the magnetic paper were examined using a UV–Vis spectrophotometer at a maximum wavelength of 269 nm. The result showed that the phenol was efficiently adsorbed on magnetic paper under an optimum pH of 7 at a contact time of 90 min. The adsorption followed Ho-McKay pseudo-second-order kinetics with adsorption capacity at an equilibrium of 3.15 mg/g. The magnetic and conductive paper of Fe₃O₄/CNFs should be extensively used in the adsorption of phenolic compounds in the environment.</div></div>","PeriodicalId":11716,"journal":{"name":"Environmental Nanotechnology, Monitoring and Management","volume":"24 ","pages":"Article 101090"},"PeriodicalIF":0.0,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144723920","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Efficient eco-friendly porous green carbon fiber derived from palm waste leaves for lead removal from wastewater: RSM, and advanced modeling of machine learning","authors":"Mosaab A. Elbager ,&nbsp;Mohammad Al-Suwaiyan ,&nbsp;Qusai M. Karrar ,&nbsp;Mohammed A.A. Elgzoly ,&nbsp;Maimuna U. Zarewa ,&nbsp;Tawfik A. Saleh","doi":"10.1016/j.enmm.2025.101101","DOIUrl":"10.1016/j.enmm.2025.101101","url":null,"abstract":"<div><div>This study introduces a novel adsorbent material green carbon fibers (GCF) synthesized from palm waste leaves for sustainable wastewater treatment, leveraging their high porosity, thermal stability, and surface functionality for effective lead (Pb²⁺) removal from aqueous media. The uniqueness of the material lies in its origin from agricultural waste and its retention of natural fibrous morphology and hierarchical pore structures, distinguishing it from conventional activated carbons. Experimental conditions included pH 5.5, temperatures (10–40) °C, adsorbent doses (25–75) mg, and lead ion concentrations (50–100) mg/L. Characterization using SEM, EDS, XRD, TGA, BET, FTIR, and zeta potential analyses confirmed a highly porous GCF structure and favorable surface chemistry. Adsorption kinetics followed a pseudo-second-order (PSO) model (R² = 0.952), indicating chemisorption, with a maximum capacity of 74.961  mg/g. Freundlich isotherm modeling (R² = 0.9646) suggested heterogeneous multilayer adsorption. The RSM model demonstrated high predictive reliability with Reduced 2FI model (R² = 0.9652) and among machine learning models, the Decision Tree outperformed others with R² = 0.9143 and MSE = 76.88, identifying adsorbent weight as the most critical factor. These findings highlight the viability of converting agricultural waste into high-performance adsorbents, offering an eco-friendly and cost-effective solution for heavy metal remediation in wastewater.</div></div>","PeriodicalId":11716,"journal":{"name":"Environmental Nanotechnology, Monitoring and Management","volume":"24 ","pages":"Article 101101"},"PeriodicalIF":0.0,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145332745","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}