Colloids and Surfaces C: Environmental Aspects最新文献

{"title":"Wastewater organic pollutant removal efficiency of layered double oxide (LDO), CTAB-modified LDO, and CTAB-functionalized g-C3N4/LDO composite","authors":"Fungbili Basumatary ,&nbsp;Riya Daimary ,&nbsp;Bipul Das ,&nbsp;Sanjay Basumatary","doi":"10.1016/j.colsuc.2025.100087","DOIUrl":"10.1016/j.colsuc.2025.100087","url":null,"abstract":"<div><div>In this study, a novel ternary composite based on graphitic carbon nitride (g-C₃N₄), layered double oxide (LDO), and cetyltrimethylammonium bromide (CTAB) was synthesized and evaluated for the effective adsorption of malachite green (MG) dye from aqueous solution. The composite was synthesized through a facile thermal and surfactant-assisted method and characterized by FTIR, XRD, FESEM, and UV–vis techniques to confirm its structural and surface properties. Batch adsorption experiments were conducted to study the influence of variables such as pH, contact time, initial dye concentration, and adsorbent amount, exclusively for the final CTAB-g-C₃N₄/LDO composite. Although the composite exhibited a slightly lower MG removal efficiency (94.34 ± 0.16 %) compared to its intermediate components such as LDH (99.4 ± 0.1 %), LDO (99.2 ± 0.14 %) and CTAB/LDO (99.07 ± 0.13 %), it demonstrated an appreciable adsorption capacity of 118.76 mg/g. The pseudo-second-order kinetic model best described the adsorption process, while the Langmuir isotherm indicated monolayer adsorption on a homogeneous surface. The integration of g-C₃N₄ and CTAB was found to enhance surface functionality and dispersion stability, offering potential advantages in future applications such as reusability and multi-pollutant removal. Overall, the composite presents a promising strategy for dye removal in wastewater treatment.</div></div>","PeriodicalId":100290,"journal":{"name":"Colloids and Surfaces C: Environmental Aspects","volume":"4 ","pages":"Article 100087"},"PeriodicalIF":0.0,"publicationDate":"2026-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145555482","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":"The influence of nanoplastics' surface charge on the formation of protein corona and the subsequent sorption of Cd2 + and Pb2+ ions","authors":"Aqsa Sadiq ,&nbsp;Lucio Litti ,&nbsp;Sara Bogialli ,&nbsp;Giorgio Arrigoni ,&nbsp;Paolo Pastore ,&nbsp;Fazel Abdolahpur Monikh","doi":"10.1016/j.colsuc.2025.100088","DOIUrl":"10.1016/j.colsuc.2025.100088","url":null,"abstract":"<div><div>Micro and nanoplastics (NPs) might enter in human body and with proteins resulting in the formation of the protein corona. In this study, we investigated the formation of protein coronas on negatively and positively charged polystyrene (PS) NPs and examined their effects on the sorption of Pb²⁺ and Cd²⁺. Both positively and negatively charged PS-NPs exhibited nearly identical protein corona compositions, irrespective of surface charge, except for glycoproteins, which showed significantly higher adsorption on negatively charged particles. In ultrapure water without a protein corona, no significant adsorption of Cd²⁺ or Pb²⁺ was observed on either particle type. In human serum over 72 h, positively charged PS-NPs reduced Pb²⁺ concentration in the surrounding medium from 100 ± 4.42 % to 85.9 ± 7.63 % and Cd²⁺ from 100 ± 5.88 % to 88 ± 6.59 %, indicating sorption of these metals onto corona-coated particles. Negatively charged PS-NPs decreased Pb²⁺ to 83 ± 3.09 %. These results demonstrate that protein corona formation markedly modifies the metal sorption capacity of PS-NPs. Furthermore, Pb²⁺ consistently exhibited stronger adsorption than Cd²⁺, suggesting a metal-specific affinity of PS-NPs following corona formation. These findings demonstrated that the surface charge does not play a major role in the formation of the protein corona on nanoplastics. However, the protein corona can significantly promote the heavy metals adsorption by forming stable nanoplastics-protein corona (NP-PC) metal complexes under physiological conditions. This interaction may increase nanoplastics toxicity by enhancing the accumulation and transport of highly toxic metals within biological systems, with important implications for risk assessment.</div></div>","PeriodicalId":100290,"journal":{"name":"Colloids and Surfaces C: Environmental Aspects","volume":"4 ","pages":"Article 100088"},"PeriodicalIF":0.0,"publicationDate":"2026-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145618666","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":"Self-propelled ZnFe2O4@MnO2@halloysite micromotors for in situ removal of antibiotics from soil","authors":"Ke Dong,&nbsp;Qi Liu,&nbsp;Chuan Shi,&nbsp;Mengyin Tan,&nbsp;Hong Wang","doi":"10.1016/j.colsuc.2025.100090","DOIUrl":"10.1016/j.colsuc.2025.100090","url":null,"abstract":"<div><div>The potential negative impacts of antibiotics in soil on the natural environment have currently attracted widespread attention from the academic community and all sectors of society. In response, this study modified the natural clay mineral halloysite nanotubes (HNTs) with MnO₂ and ZnFe₂O₄ to construct self-propelled ZnFe₂O₄@MnO₂@HNT micromotors. These micromotors can effectively activate peroxymonosulfate (PMS) and hydrogen peroxide (H₂O₂), thereby efficiently degrading tetracycline (TC) in soil. Compared to the micromotors/H₂O₂ and micromotors/PMS, the coupling of PMS and H₂O₂ increased the TC removal efficiency of micromotors by 24.46 % and 21.49 %, reaching 95.44 % within 30 min. Among the components of micromotors, MnO₂ not only catalyzed the generation of oxygen by decomposing H₂O₂ to drive the autonomous motion of micromotors, but also exhibited a synergistic effect with ZnFe₂O₄ in TC removal. The micromotors displayed an apparent reaction rate constant of 7.96 and 6.08 times higher than that of MnO₂@HNT and ZnFe₂O₄ in the mixed system of PMS and H₂O₂ after 10 min’ treatment. Furthermore, key influencing factors including initial pollutant concentration, catalyst dosage, PMS concentration, and initial pH were also systematically studied, the reaction mechanism and possible transformation mechanism were inferred. This study presents a new perspective on the application of natural minerals in the field of soil pollutant degradation.</div></div>","PeriodicalId":100290,"journal":{"name":"Colloids and Surfaces C: Environmental Aspects","volume":"4 ","pages":"Article 100090"},"PeriodicalIF":0.0,"publicationDate":"2026-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145883727","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":"Cross-dataset prediction of As(III) adsorption by Mg-Al-Ti oxide nanoparticles by response surface and ensemble machine learning methods","authors":"Somakraj Banerjee,&nbsp;Ranjana Das,&nbsp;Chiranjib Bhattacharjee","doi":"10.1016/j.colsuc.2025.100089","DOIUrl":"10.1016/j.colsuc.2025.100089","url":null,"abstract":"<div><div>This study involves the optimization and prediction of As(III) adsorption performance by Mg-Al-Ti composite oxide nanoparticles using response surface methodology (RSM) and ensemble machine learning (ML) methods. A 5-factor Box and Wilson central composite design (CCD) with two star-points were used to observe the effect of pH (6−11), contact time (220–360 min), adsorbent dose (0.35–0.7 g/l), agitation (250–500 rpm), initial concentration (90–200 ppm) on the As(III) adsorption capacity (mg/g) and removal percentage. Predication using the machine learning technique was done using ensemble learning by using random forest (RF), extra trees (ExT), gradient boosting (GB), Ada boost (AB) &amp; XGBoost (XGB) regression models on the CCD dataset and a bigger training dataset mixing the current dataset with the data from 10 different metal oxide-based adsorbents from literature. From RSM method, with an adjusted R² value of 0.89, optimized parameters for maximum removal percentage (95.21 %) were found to be pH = 6.08, contact time = 357.44 min, dose = 0.6 g/l and 495.98 rpm for an initial concentration of 100 ppm. The ExT regression model showed the highest prediction accuracy of 89.31 % based on the training on CCD data while training the models on the bigger data set showed the highest prediction accuracy of 93.36 % and adjusted R² of 0.93 by XGB model. Based on the analysis, using ensemble learning and a larger data set improves the model significantly and provides better prediction than CCD.</div></div>","PeriodicalId":100290,"journal":{"name":"Colloids and Surfaces C: Environmental Aspects","volume":"4 ","pages":"Article 100089"},"PeriodicalIF":0.0,"publicationDate":"2026-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145737494","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":"Preparation of SiO2 composites for efficient removal of Congo red via the combination of mussel-inspired surface modification and anionic ring-opening polymerization","authors":"Jinjiu Zhu ,&nbsp;Ke Wang ,&nbsp;Shuhui Fan ,&nbsp;Aoxing Ouyang ,&nbsp;Jiawei Gu ,&nbsp;Jianwen Tian ,&nbsp;Meiying Liu ,&nbsp;Fengjie Deng ,&nbsp;Xiaoyong Zhang ,&nbsp;Yen Wei","doi":"10.1016/j.colsuc.2025.100078","DOIUrl":"10.1016/j.colsuc.2025.100078","url":null,"abstract":"<div><div>SiO₂ nanoparticles have emerged as promising candidates for wastewater remediation due to their facile synthesis, tunable morphological characteristics, and customizable surface chemistry. These features enable effective sequestration of various aquatic contaminants. The adsorption capability of pristine silica nanoparticles frequently demonstrates poor efficiency, primarily due to the absence of targeted functional moieties essential for effective molecular binding interactions. This research introduces an innovative approach for nanoparticle surface engineering through the synergistic integration of mussel-inspired chemistry and controlled anionic polymerization, employing 2,3-epoxypropyltrimethylammonium chloride (PTAC) as the functional monomer to engineer silica nanostructures. The structural and morphological properties of resultant SiO₂ composites (designated as SiO₂-PDA-PTAC) were confirmed by various techniques. Quantities of laboratory investigations were conducted to assess the adsorption capacity of Congo red (CR) of the synthesized materials. The findings demonstrated a remarkable improvement in adsorption capability, where SiO₂-PDA-PTAC hybrid achieved a maximum capacity of 131.30 mg/g—approximately four times higher than that of unmodified silica (32.48 mg/g). Thermodynamic analysis confirmed the spontaneous nature of the adsorption process, characterized by positive entropy changes and endothermic behavior. The experimental data exhibited excellent correlation with established theoretical models, showing high regression coefficients for both pseudo-second-order kinetics (<em>R</em>² = 0.9918) and Langmuir isotherm (<em>R</em>² = 0.9993). Among various interactions between SiO₂-PDA-PTAC and CR, electrostatic interaction played critical roles in adsorption process. SiO₂-PDA-PTAC maintained substantial adsorption efficiency through successive regeneration cycles, demonstrating excellent reusability and stability in practical applications, highlighting their potential for practical applications in wastewater treatment.</div></div>","PeriodicalId":100290,"journal":{"name":"Colloids and Surfaces C: Environmental Aspects","volume":"3 ","pages":"Article 100078"},"PeriodicalIF":0.0,"publicationDate":"2025-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144887454","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":"Optimizing phosphorus recovery from an acidic pulp stream with cobalt ferrite nanoparticles: A methodology for pulp mills","authors":"C.E.D. Cardoso ,&nbsp;J.C. Almeida ,&nbsp;J. Rocha ,&nbsp;E. Pereira","doi":"10.1016/j.colsuc.2025.100073","DOIUrl":"10.1016/j.colsuc.2025.100073","url":null,"abstract":"<div><div>Phosphate, a critical resource essential for agriculture and industry, faces a rising demand that outpaces population growth. The European Union's classification of phosphate as a critical raw material since 2011 highlights its significance and the region's dependence on imports. To address this challenge, our study aims to enhance phosphorus recovery from real industrial effluents utilizing cobalt ferrite nanoparticles. We employed the design of experiments along with response surface methodology to optimize the phosphorus recovery process and identify the most influential factors. The optimal conditions for achieving over 80 % phosphorus recovery from a 25 mg P/L solution were found to be either a sorbent dose of 3.5 g/L with a 15-minute contact time or a 2.5 g/L dose with 1 h if exposure, both at pH 6 and 60 ºC. Additionally, this study demonstrates that reusing nanoparticles in multiple 15-minute sorption cycles yielded higher phosphorus recovery compared to a continuous 1-hour cycle. This approach offers an effective and eco-friendly way to recover phosphorus from pulp mill effluents, reducing environmental impact and providing a valuable resource for the future, thereby contributing to the circular economy of phosphorus.</div></div>","PeriodicalId":100290,"journal":{"name":"Colloids and Surfaces C: Environmental Aspects","volume":"3 ","pages":"Article 100073"},"PeriodicalIF":0.0,"publicationDate":"2025-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144491425","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":"Sulfolane desolvation by garlic sulfoxides: Potential link to plant survival upon uptake","authors":"Nour Kashlan ,&nbsp;Ryan Prosser ,&nbsp;Erica Pensini","doi":"10.1016/j.colsuc.2025.100082","DOIUrl":"10.1016/j.colsuc.2025.100082","url":null,"abstract":"<div><div>Previous studies report a positive correlation between contaminant hydrophobicity and accumulation in plants. We show that sulfoxides present in garlic, such as alliin, methiin and propiin, phase-separate (i.e., de-solvate, demix) sulfolane from aqueous solutions, as shown by optical microscopy during <em>in vitro</em> experiments conducted using garlic extracts. Sulfolane is a contaminant freely miscible in pure water. However, water interacts more strongly with the sulfoxides alliin, methiin and propiin than with sulfolane, as we demonstrated by computer simulations. This explains why garlic sulfoxides desolvate sulfolane, causing it to behave as a hydrophobic solvent. Garlic uptakes 10.5 ± 0.77 wt% sulfolane relative to water in its cloves from solutions prepared with 10 wt% sulfolane, during a two-week period at 18.5–19.5⁰C, as seen by Fourier transform infrared spectro-microscopy conducted on dissected garlic cloves. Under these conditions, it displays signs of stress and its shoots wilted, but it could nonetheless survive. In contrast, onion plants died. The algae <em>Chlorella vulgaris</em> and <em>Raphidocelis subcapitata</em> also died. They do not contain the sulfoxides found in garlic and did not phase-separate sulfolane from water.</div></div>","PeriodicalId":100290,"journal":{"name":"Colloids and Surfaces C: Environmental Aspects","volume":"3 ","pages":"Article 100082"},"PeriodicalIF":0.0,"publicationDate":"2025-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145219474","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":"Erratum to “Nanostructured Zr-Mn binary hydrous oxide as an effective adsorbent for arsenic removal from water and groundwater” [Colloids Surf. C: Environ. Asp. 1C (2023) 100022]","authors":"Gaosheng Zhang ,&nbsp;A.K.M. Khorshed Alam ,&nbsp;J. Paul Chen","doi":"10.1016/j.colsuc.2025.100056","DOIUrl":"10.1016/j.colsuc.2025.100056","url":null,"abstract":"","PeriodicalId":100290,"journal":{"name":"Colloids and Surfaces C: Environmental Aspects","volume":"3 ","pages":"Article 100056"},"PeriodicalIF":0.0,"publicationDate":"2025-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145617402","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":"High-efficient tetracycline removal triggered by Fe-based metal organic framework and sequential reutilization of spent adsorbent","authors":"Ting Chang ,&nbsp;Yuchen Shang ,&nbsp;Shiwen Li ,&nbsp;Min Zeng ,&nbsp;Jue Liu","doi":"10.1016/j.colsuc.2024.100053","DOIUrl":"10.1016/j.colsuc.2024.100053","url":null,"abstract":"<div><div>Adsorption, as an economical and effective strategy, has been widely used for treating antibiotics pollution. However, the rational disposal and limited reutilization of spent adsorbents restricts the practical application. Herein, metal organic framework (MIL-101(Fe)) was fabricated and used to remove antibiotics from aqueous environment. Specifically, the removal rate and adsorption capacity towards TC, a model pollutant, reached 95.54 % ± 1.4 % and 231.04 ± 3.29 mg/g for M-105, respectively. The adsorption mechanism could be ascribed to electrostatic attraction, π-π interaction and hydrogen bonding, pore filling and complexation identified with experimental results and spectroscopic analysis. The spent adsorbent was further annealed to Fe/Fe₃C/carbon composite, which possessed high-efficient microwave absorption performance due to good dielectric property. This work identifies MIL-101(Fe), obtained with a simple fabrication method, could be employed as a high-efficient adsorbent in TC removal and offers a novel strategy for reusing spent adsorbent in microwave absorption field.</div></div>","PeriodicalId":100290,"journal":{"name":"Colloids and Surfaces C: Environmental Aspects","volume":"3 ","pages":"Article 100053"},"PeriodicalIF":0.0,"publicationDate":"2025-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143095557","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":"Melamine-based hydrogen-bonded organic nanoframework for metal ion adsorption and antibacterial applications","authors":"Anand Prakash ,&nbsp;Anu Sharma ,&nbsp;Anita Yadav ,&nbsp;Rakesh Kumar Sharma","doi":"10.1016/j.colsuc.2025.100059","DOIUrl":"10.1016/j.colsuc.2025.100059","url":null,"abstract":"<div><div>The present investigation reported the hydrothermal synthesis of melamine-based hydrogen organic nanoframework (M-HOFs) with promising toxic metal ions adsorption properties along with antibacterial activity. FTIR, XRD, FESEM, BET, and NTA analyses were utilized to perform the characterization of the synthesized M-HOF. The nanosized (83 nm), mesoporous nature, and high surface area (∼ 1199.93 m²/g) are responsible for adsorption and enhanced antibacterial activity. The adsorption studies showed that M-HOF is sensitive to Pb²⁺ ions in an aqueous medium. The Pb²⁺ ions quenched the emission of M-HOF to the largest extent with the <em>K</em>_SV value of 1.4099 × 10⁴ M⁻¹. The binding of Pb²⁺ ions leads to electronic changes in the structure of M-HOF. Additionally, M-HOF was investigated for its potential as an antibacterial agent based on its activity against Gram-positive and Gram-negative bacteria. The antibacterial efficiency of M-HOF against <em>Pseudomonas aeruginosa</em> (PA01) at 60 μg/mL was found to be 99 % after 10 h. M-HOF’s cytotoxicity was tested against HMEC-1 (Human microvascular endothelial cell line) at various concentrations, demonstrating good biocompatibility. This scalable and low-cost synthesis of M-HOF has great potential to reduce the environmental impact of waste, and disease transmission and can be utilized in dressings and food packaging areas.</div></div>","PeriodicalId":100290,"journal":{"name":"Colloids and Surfaces C: Environmental Aspects","volume":"3 ","pages":"Article 100059"},"PeriodicalIF":0.0,"publicationDate":"2025-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143095559","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}