Environmental Science and Pollution Research最新文献

{"title":"Investigation of the pollution effect on reducing energy production in solar panels and self-cleaning with hydrophilic nano-coatings without using water","authors":"Ozan Akı,&nbsp;Dinçer Akal,&nbsp;Taşkın Tez,&nbsp;İlhan Umut","doi":"10.1007/s11356-025-36947-7","DOIUrl":"10.1007/s11356-025-36947-7","url":null,"abstract":"<div><p>There is a growing interest in solar electricity generation in many countries worldwide. This current trend is the installation of photovoltaic (PV) panels on the roofs of independent units rather than solar power plants. However, the conversion efficiency of PV panels in solar electricity generation is declining due to the accumulation of dust and surface contamination. Furthermore, the process of cleaning PV panels placed on the roofs of residential and commercial buildings is a challenging and potentially hazardous task. In this study, the SELFCLEAN PV hydrophilic nano-coating was applied to a single PV panel on a solar energy conversion system at Trakya University Faculty of Engineering, with consideration given to the roof slopes of buildings in the Edirne Province. During the summer season, when solar radiation was at its highest levels, data were collected continuously over 4 months. As a result of this practice, it was observed that energy production increased by 8.14% in June, 7.73% in July, 6.34% in August, and 5.34% in September in comparison to the standard PV panel. Furthermore, not having to clean PV panels for over 4 months offers labor and cost advantages, while water use is not required in this process, which significantly contributes to sustainability.</p></div>","PeriodicalId":545,"journal":{"name":"Environmental Science and Pollution Research","volume":"32 36","pages":"21722 - 21739"},"PeriodicalIF":5.8,"publicationDate":"2025-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145068883","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}

{"title":"Algae-based bioremediation of soil, water, and air: a solution to polluted environment","authors":"Neelma Munir,&nbsp;Zirwa Sarwar,&nbsp;Zainul Abideen,&nbsp;Faiza Saleem,&nbsp;Mirza Hasanuzzaman,&nbsp;Zamin Shaheed Siddiqui,&nbsp;Ali El-Keblawy","doi":"10.1007/s11356-025-36880-9","DOIUrl":"10.1007/s11356-025-36880-9","url":null,"abstract":"<div><p>The increasing prevalence of environmental pollutants including both organic and inorganic contaminants in ecosystems is largely due to inappropriate waste disposal. Persistent pollutants, such as heavy metals, plactic debris and industrial chemicals are frequently found in effluents, present a significant concern for Living organisms. Among various waste removal practices, bioremediation is one of the economical and environmentally friendly approaches. The bioremediation process biologically mediates Changes in these pollutants, with microbial communities and microalgae playing a key role in eliminating various types of pollutants in wastewater. Due to its non-degradable nature, plastic contributes to the greenhouse gas emission and significantly impacts climate Change. However, the natural formation of biofilms can degrade the structure of plastic sheets and aid in decomposing bits of plastic in aquatic environments. Furthermore, forming reactive oxygen species in response to antioxidants plays a crucial role in providing tolerance against heavy metal stress in eukaryotic algae. This study investigates the bioremediation potential of microalgae with a focus on its effectiveness in addressing heavy metal pollution, contributing valuable insights to our understanding of the environmental repercussions of these pollutants. The synthesis of algal nanoparticles presents a green and sustainable approach with high adsorptive efficiency. Some microalgae have unique capabilities to consume inorganic nitrogen and phosphorus, which enables them to degrade the pollutants effectively. Algae are responsible for 50% of carbon dioxide fixation through photosynthesis, producing oxygen in the process. This review highlights the cost-effective potential of algae and algal nanoparticles in the bioremediation of soil, water, and air.</p></div>","PeriodicalId":545,"journal":{"name":"Environmental Science and Pollution Research","volume":"32 36","pages":"21338 - 21357"},"PeriodicalIF":5.8,"publicationDate":"2025-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145063169","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}

{"title":"High-resolution modeling of extreme heat events with socioeconomic consideration: a real-case WRF–LES approach","authors":"Maryam Golbazi,&nbsp;Frank Liu,&nbsp;Yin-Hsuen Chen,&nbsp;Timothy W. Juliano,&nbsp;Heather Richter","doi":"10.1007/s11356-025-36928-w","DOIUrl":"10.1007/s11356-025-36928-w","url":null,"abstract":"<div><p>The overarching goals of this work is to explore best practices for micro-scale modeling of a real case, identify relevant phenomena by using high-resolution modeling, and to explore their implications for public health, and climate resilience strategies in Hampton Roads, VA, USA. This project employs the Weather Research and Forecasting (WRF) model to conduct a comprehensive study of Hampton Roads, utilizing a coupled mesoscale to microscale modeling capable of resolving boundary layer turbulence. This study has three primary objectives: (1) to establish the optimal mesoscale to Large-Eddy Simulation (LES) configurations for complex geographical regions such as the Hampton Roads (HR) domain and address challenges inherent to multi-scale modeling; (2) as a demonstration, to identify extreme heat episodes and urban heat islands within the study area; and (3) to explore the correlation between these heat islands and the socio-economic characteristics of HR neighborhoods. Model performance was evaluated using observational data, applying standard statistical metrics such as correlation coefficient, mean bias, and root mean square error to select the most realistic model configuration. Similar statistical methods were used to assess the relationship between heat exposure and socio-economic factors. We also introduce a new metric, cooling energy demand, to quantify the potential economic burden of extreme heat. The Results show that lower-income communities are disproportionately exposed to higher heat levels and face greater cooling energy demands compared to rural areas. In addition, through extensive testing, we identified the cell-perturbation method as an effective approach for producing physically realistic LES simulations validated against observations. Future work will extend this approach to neighborhood-scale air quality modeling to develop a more comprehensive understanding of environmental stressors and support targeted climate resilience strategies for vulnerable communities.</p></div>","PeriodicalId":545,"journal":{"name":"Environmental Science and Pollution Research","volume":"32 36","pages":"21666 - 21680"},"PeriodicalIF":5.8,"publicationDate":"2025-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s11356-025-36928-w.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145038921","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Sub-chronic oral exposure to titanium dioxide nanoparticles induces neurotoxicity in Wistar rats: evidence from mitochondrial, Micro-CT, and behavioral analyses","authors":"Sara Bouzenzana,&nbsp;Rachid Rouabhi,&nbsp;Abdellali Bouzenzana,&nbsp;Besma Benaziz,&nbsp;Khadidja Bekhouche,&nbsp;Kamel Gaci,&nbsp;Tahar Goudjil","doi":"10.1007/s11356-025-36935-x","DOIUrl":"10.1007/s11356-025-36935-x","url":null,"abstract":"<div><p>Given their widespread use in food, cosmetics, pharmaceuticals, agriculture, and industry, titanium dioxide nanoparticles (TiO₂-NPs) pose a potential risk due to frequent and prolonged exposure, raising concerns about their impact on both human and environmental health. A few numbers of studies were interested to the neurotoxicity of TiO₂ NPs through the oral pathway. This study aimed to evaluate the neurotoxic effects of sub-chronic oral exposure to TiO₂-NPs in Wistar rats and investigate their toxic mechanisms using an integrated approach that links structural, cellular, behavioral, and biochemical changes, contributing to a better understanding of their toxicity and helping to mitigate potential risks to human health and the environment. In this study, animals received daily oral gavage of TiO₂-NPs (31–15 nm) at doses of 215 or 500 mg/kg for 90 days. Oxidative stress markers were assessed using brain tissue homogenates, including antioxidant enzymes (CAT, SOD, GPx, GSH, GST) and lipid peroxidation levels. Biochemical parameters Such as carbohydrate, lipid, and protein content were also analyzed. Mitochondrial function was evaluated using an oxygen electrode system, along with assessments of mitochondrial permeability and swelling. Brain structural changes were examined using the Micro-CT Skyscan 1276 system and histological analysis. Neurobehavioral functions were assessed through standardized behavioral tests evaluating memory, learning, locomotor activity, and anxiety. Results showed that high-dose exposure led to significant oxidative stress, evidenced by decreased levels of antioxidant enzyme defenses (CAT, SOD, GPx, GSH, GST) that caused a buildup of ROS and oxidative stress, which increased MDA levels and caused membrane damage and morphological brain alterations, as confirmed by the micro-CT and the histopathological changes. Micro-CT revealed structural disorganization and reduced contrast between brain regions, while histopathological analysis confirmed neuronal degeneration, cerebral edema, and inflammatory infiltration, indicating pronounced neurotoxicity and extensive cellular damage within the brain parenchyma induced by TiO₂ nanoparticles. Mitochondrial dysfunction was also observed, including impaired respiration, elevated permeability, and swelling, as assessed. Biochemical analyses revealed disruptions in brain carbohydrate, lipid, and protein content. Neurobehavioral assessments demonstrated deficits in memory, learning, locomotor activity, and increased anxiety. These findings highlight the dose-dependent neurotoxic potential of sub-chronic TiO₂-NP exposure and emphasize the need for further investigation and regulatory oversight.</p></div>","PeriodicalId":545,"journal":{"name":"Environmental Science and Pollution Research","volume":"32 36","pages":"21703 - 21721"},"PeriodicalIF":5.8,"publicationDate":"2025-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145051559","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}

{"title":"Exploring the plastivorous activity of Hermetia illucens (Diptera Stratiomyidae) larvae","authors":"Linda Abenaim,&nbsp;David Mercati,&nbsp;Alessandro Mandoli,&nbsp;Joachim Carpentier,&nbsp;Grégoire Noël,&nbsp;Barbara Conti,&nbsp;Rudy Caparros Megido,&nbsp;Romano Dallai","doi":"10.1007/s11356-025-36952-w","DOIUrl":"10.1007/s11356-025-36952-w","url":null,"abstract":"<div><p><i>Hermetia illucens</i> (Diptera Stratiomyidae), also known as Black Soldier Fly (BSF), is one of the insect species most investigated for biodegradation ability in its larvae. <i>H. illucens</i> larvae can biodegrade organic waste but also contaminants like pesticides, antibiotics, and mycotoxins. This study wants to investigate the ability of these larvae to degrade polystyrene (PS). Experiments evaluated the growth performance, survival rates, intestinal and intracellular morphological alterations, degradation by-product formation and intestinal microbiota alterations of larvae fed a PS-enriched diet. Despite the addition of PS microparticles, no significant differences in growth or survival were observed compared to the standard diet (<i>p</i> &gt; 0.05). Confocal Laser Scanning Microscopy and Transmission Electron Microscopy confirmed the presence of PS microparticles in the larval gut, with potential signs of biodegradation. Metabolomic analyses identified styrene in the gut after 1 and 3 days of PS feeding, but its occurrence was likely due to thermal depolymerisation of the PS microparticles under GC–MS conditions. Metagenomic analysis revealed significant shifts in the intestinal microbiota. Notably, an enrichment of <i>Corynebacterium</i>, known for its role in aerobic PS degradation, and the abundance increase of other genera (<i>Enterococcus</i>, <i>Enterobacteriaceae</i>, <i>Enterobacter</i>, and <i>Escherichia-Shigella</i>) associated with synthetic polymer metabolism was observed. These results confirm the potential of BSF larvae to manage plastic waste through the interaction between their gut microbiota and synthetic materials. This study provides a foundation for future research focusing on isolating bacterial communities and enzymatic processes involved in polymer degradation, aiming to develop sustainable strategies for plastic waste management.\u0000</p></div>","PeriodicalId":545,"journal":{"name":"Environmental Science and Pollution Research","volume":"32 36","pages":"21649 - 21665"},"PeriodicalIF":5.8,"publicationDate":"2025-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145051577","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}

{"title":"Analysis of carbon balance in the Yangtze River Delta region based on land use dynamics","authors":"Dongmei Ma,&nbsp;Kongqing Li","doi":"10.1007/s11356-025-36903-5","DOIUrl":"10.1007/s11356-025-36903-5","url":null,"abstract":"<div><p>In the context of global climate change, increasing carbon emissions have become a major challenge to the sustainable development of human society. It is of great practical significance to scientifically assess the regional carbon budget status, to coordinate social and economic development and ecological environmental protection, and to promote the implementation of the “dual carbon” (carbon peak and carbon neutrality) strategy. In this study, the Yangtze River Delta urban agglomeration was taken as the research object, and the total regional carbon emissions from 2010 to 2020 were systematically calculated using the carbon emission coefficient method. Based on the land use data obtained from remote sensing images in different periods, the spatiotemporal evolution of land cover in the study area was deeply analyzed. The spatial correlation analysis method is used to reveal the spatial correlation characteristics and evolution trend of carbon emissions, in which the global spatial autocorrelation test confirms the significant spatial dependence of carbon emissions, and the local spatial correlation analysis identifies a variety of typical spatial agglomeration patterns. The cold and hot spot analysis model accurately defines the core areas of high carbon emissions, which provides data support for the implementation of regional differentiated emission reduction strategies. In addition, the independent contribution of each driving factor and its interaction effect were quantitatively evaluated with the help of the geographic detector model. The results show that the study area continues to be in a state of carbon deficit during the observation period, and although the emission growth rate shows a slowdown trend, the total amount still grows. The spatial pattern of carbon emissions is significantly heterogeneous. The core driving factors such as GDP, industrial structure, fixed asset investment, energy consumption efficiency, and policy support not only play a significant role in their own actions, but their synergistic effects also show nonlinear enhancement characteristics. The research results not only provide a theoretical basis for the low-carbon development planning in the Yangtze River Delta region, but also provide a scientific reference for the formulation and implementation of carbon emission reduction policies at the national level, and have important practical value for promoting the construction of ecological civilization and realizing the strategic goal of “dual carbon.”</p></div>","PeriodicalId":545,"journal":{"name":"Environmental Science and Pollution Research","volume":"32 36","pages":"21681 - 21702"},"PeriodicalIF":5.8,"publicationDate":"2025-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145038854","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}

{"title":"Systematic and stratified characterization of fecal sludge from septic tanks of bungalow type buildings","authors":"Chidozie Charles Nnaji,&nbsp;Chidera Emmanuel Ozota","doi":"10.1007/s11356-025-36838-x","DOIUrl":"10.1007/s11356-025-36838-x","url":null,"abstract":"<div><p>On-site sanitation systems have proven to be widely acceptable in developing societies due to their ease of construction compared to sewer systems. However, management of the effluent sludge from the system has remained an environmental challenge. Proper understanding of the widely varying physico-chemical characteristics of sewage sludge will aid in the proper management of the system and disposal of septic tank sludge after desludging. Hence, this study was aimed at investigating the physical characteristics of septic tank systems, accumulation rate and the physico-chemical characteristics of septic tank sludge in bungalow-type buildings. The methodology for the study involved physical inspection and measurement of systematically and purposively selected septic tanks, measurement of sludge accumulation rates, and collection of samples from various layers (top liquid layer, bottom liquid layer, top sludge layer, and bottom sludge layer) of the systems for laboratory physico-chemical tests. It was observed that more than 60% of the sampled septic tanks have a volume of 10–15 m³, more than 35% of the sampled septic tanks had between five and seven users, and also, 80% of the sampled septic tanks was located 1–3 m from the building line. An average accumulation rate of 0.2015 m³/capita/year was recorded. A decrease in the accumulation rate of fecal sludge over time was observed with an <i>R</i>² = 0.8429. Phosphate exhibited the highest concentration among observed minerals, ranging from 346.46 mg/L at the top of liquid layer to 680.50 mg/L at the bottom of sludge layer, while nitrite had the lowest concentration, ranging from 0.1535 mg/L at the top of sludge to 0.3185 mg/L at the top of liquid. The other observed parameters showed varying concentrations in the different fractions. Significant variations were noted in moisture content, pH, and phosphate concentrations among different fractions due to <i>p</i> values lower than 0.05, other parameters showed no significant difference with <i>p</i> values ranging from 0.108 to 0.857. Significant correlation values were observed for some of the physico-chemical parameters such as nitrate (NO₃⁻) and TVS (− 0.944), nitrate (NO₃⁻) and TFS (0.758), temperature and nitrate (0.820), pH and temperature (0.751), <i>E. coli</i> and moisture content (0.833), <i>E. coli</i> and COD (− 0.790), and <i>E. coli</i> and phosphate (0.848). These findings provide critical insights for fecal sludge management, guiding treatment method selection, process optimization, and efficiency improvement.</p></div>","PeriodicalId":545,"journal":{"name":"Environmental Science and Pollution Research","volume":"32 36","pages":"21616 - 21633"},"PeriodicalIF":5.8,"publicationDate":"2025-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145032354","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}

{"title":"Facile construction of chitosan-ternary metal selenide biopolymer-based composite for photocatalytic degradation of petroleum derive sunset yellow and acid black azo-dyes using response surface methodology RSM","authors":"Tariq Aziz,&nbsp;Muhammad Farhan,&nbsp;Adnan Khan,&nbsp;Nisar Ali,&nbsp;Javeed Azam,&nbsp;Sumeet Malik,&nbsp;Sarmad Ali,&nbsp;Nauman Ali,&nbsp;Hamayun Khan,&nbsp;Rayya Ahmed Al Balushi,&nbsp;Mohammad M. Al-Hinaai,&nbsp;Thuraya Al-Harthy","doi":"10.1007/s11356-025-36811-8","DOIUrl":"10.1007/s11356-025-36811-8","url":null,"abstract":"<div><p>The presence of organic pollutants especially dyes in industrial wastewater is a significant threat to both human health and aquatic life. As a result, it is required to degrade toxic organic dye pollutants to ensure the safety of the environment and the public. To solve this problem, a co-precipitation technique was used to prepare chitosan-based-ternary metal selenide nanocomposites (FeMnSeCs-NPs). Chitosan was used to encapsulate the nanocomposites to stop leaching and make the catalyst recovery process simple. The nanocomposite’s effective synthesis was confirmed by FTIR analysis. The nanomaterial’s average particle size, as determined by SEM analysis, was 40 nm. Iron, manganese, and selenium elements were identified by EDX analysis, supporting the synthesis of FeMnSeCs-NPs. The Tauc plot was used to determine the narrow bandgap of 2.09 eV and the crystallite structure of nanocomposites to be 14.2 nm with a crystalline structure confirmed by XRD analysis. Furthermore, the as-synthesized FeMnSe-NPs were employed to degrade acid black 2 and sunset yellow dyes via photocatalytic degradation. The catalyst exhibited a high photocatalytic degradation efficiency of up to 95% for both dyes under optimized circumstances of 90 min, 0.5 g of catalyst under the sunlight irradiation. The degradation efficiency was maintained up to five consecutive cycles. These findings showed the effectiveness of FeMnSeCs-NPs for the removal of dye contaminants from industrial effluent.</p></div>","PeriodicalId":545,"journal":{"name":"Environmental Science and Pollution Research","volume":"32 36","pages":"21634 - 21648"},"PeriodicalIF":5.8,"publicationDate":"2025-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145032346","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}

{"title":"Effect of fly ash cenosphere concrete under elevated temperature.","authors":"Kowsalya Mahendra Kumar, Sindhu Nachiar Siva Subramanian, Anandh Sekar","doi":"10.1007/s11356-025-36898-z","DOIUrl":"https://doi.org/10.1007/s11356-025-36898-z","url":null,"abstract":"<p><p>Structural components are subjected to diverse temperatures upon unforeseen building fires. In such instances, the micro-scale and macro-scale engineering characteristic attributes of concrete exert a profound influence upon the composition of the materials involved. This study focused on replacement of fly ash cenosphere as fine aggregate with alccofine as binder. Three mix ratios were adopted and were exposed to an elevated temperature from 200 to 800ºC for a period of 1, 2, and 3 h. Experimental investigations such as thermophysical assessments, weight loss ratio, pore structural analysis, residual compressive strength, and its failure modes are studied. The chemical deterioration behavior was analyzed using scanning electron microscopy (SEM), X-ray diffraction (XRD), and Fourier transform infrared (FTIR) spectroscopy. From the results, it was observed that the residual compressive strength decreased from 53.18 to 72.50% in CC, 18.13 to 34.33% in FACC, and 17.98 to 29.64% in FACCAF. Hence, addition of fly ash cenosphere and alccofine in the exhibits the resistance to elevated temperature by inducing thermal energy in the concrete matrix and densifies the pore structure of the concrete.</p>","PeriodicalId":545,"journal":{"name":"Environmental Science and Pollution Research","volume":" ","pages":""},"PeriodicalIF":5.8,"publicationDate":"2025-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145038823","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}

{"title":"Sequestration, recovery, and reuse of cationic, anionic, and non-ionic dyes using bentonite","authors":"Foysal Ahmed Nobel,&nbsp;Robiul Islam Fahim,&nbsp;Rakibul Hassan,&nbsp;Sultana Bedoura","doi":"10.1007/s11356-025-36929-9","DOIUrl":"10.1007/s11356-025-36929-9","url":null,"abstract":"<div><p>This study quantitatively evaluated the adsorption performance of natural bentonite for removing three dye classes—cationic (Basic dye: BEZACRYL RED GRL), anionic (Reactive dye: AVITERA LIGHT RED SE), and non-ionic (Disperse dye: BEMACRON BLUE HP3R) from synthetic textile wastewater. Batch adsorption experiments were conducted under varying conditions of contact time (15–90 min), adsorbent dosage (20–60 g L⁻¹), pH (4 and 12), and temperature (25–100 °C), with dye concentrations quantified by UV–Vis spectroscopy. At a contact time of 30 min and room temperature (25 °C), maximum removal efficiencies reached 99.98% and 99.93% for cationic dye, 65.26% and 77.13% for anionic dye, and 94.04% and 79.40% for non-ionic dye at pH 4 and pH 12, respectively. For non-ionic dyes, the removal efficiency improved slightly at elevated temperature (nearly at 60 °C). Kinetic analysis showed that cationic dye adsorption followed the pseudo-second-order (PSO) model (<i>R</i>² = 0.9999), indicating a chemisorption mechanism driven by electrostatic interactions with negatively charged bentonite basal planes. Non-ionic dye adsorption fitted better to the pseudo-first-order (PFO) model (<i>R</i>² = 0.9821), consistent with physisorption via van der Waals forces and hydrogen bonding. Anionic dye adsorption showed poor fits to both models (<i>R</i>² &lt; 0.60), reflecting weak uptake due to electrostatic repulsion from the negatively charged bentonite surface. Equilibrium data were best described by the Langmuir isotherm, suggesting monolayer adsorption with maximum capacities of 0.486, 0.373, and 0.483 mg g⁻¹ for cationic, anionic, and non-ionic dyes, respectively. Recovered dyes were reused in textile printing, producing stable and vibrant prints for cationic and non-ionic dyes, with slightly reduced intensity for anionic dyes. This work demonstrates bentonite’s dual role as an efficient, low-cost adsorbent and a means for resource recovery, providing novel insights into simultaneous wastewater treatment and dye reuse across multiple dye classes.</p><h3>Graphical abstract\u0000</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":545,"journal":{"name":"Environmental Science and Pollution Research","volume":"32 36","pages":"21596 - 21615"},"PeriodicalIF":5.8,"publicationDate":"2025-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145028728","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}