Environmental Chemistry and Ecotoxicology最新文献

{"title":"Transition metal-based MOFs for Fenton-like photocatalytic degradation of organic pollutants: Performance, stability, and biocompatibility","authors":"S.M. Tikhanova ,&nbsp;Yu.A. Tishchenko ,&nbsp;E.Yu. Stovpiaga ,&nbsp;M. Timofeeva ,&nbsp;D.V. Lipin ,&nbsp;S.A. Povarov ,&nbsp;V.A. Milichko ,&nbsp;A.S. Timin ,&nbsp;S.A. Shipilovskikh ,&nbsp;V.I. Popkov","doi":"10.1016/j.enceco.2025.01.003","DOIUrl":"10.1016/j.enceco.2025.01.003","url":null,"abstract":"<div><div>The development of efficient materials for water treatment is crucial to addressing global environmental challenges. In this study, transition metal-based metal-organic frameworks (MeBDC MOFs; Me = Fe, Co, Ni; BDC = benzene dicarboxylic acid) were synthesized via a solvothermal method and considered as dual-function photocatalysts for adsorption and removal of organic pollutant. Comprehensive physicochemical analysis of the developed samples was performed using scanning electron microscopy (SEM), powder X-ray diffraction (PXRD), energy-dispersive X-ray spectroscopy (EDX), fourier-transform infrared spectroscopy (FTIR), raman spectroscopy, N₂ adsorption-desorption isotherms (BET), and diffuse reflectance spectroscopy (DRS). The materials exhibited a high visible-light absorption with band gap energies of 1.76 eV (FeBDC), 3.08 eV (CoBDC), and 3.73 eV (NiBDC), BET surface areas of 28.2 m²/g (FeBDC), 74.3 m²/g (CoBDC), and 31.4 m²/g (NiBDC). Photocatalytic performance was evaluated using methylene blue (MB) degradation under visible-light irradiation containing both conventional and Fenton-like processes. FeBDC achieved a reaction rate constant of 0.2719 min⁻¹ with 50 mmol/L H₂O₂, outperforming other materials due to its superior visible-light absorption and catalytic activity, which justified its selection for more detailed mechanistic studies. The proposed mechanism involves ligand-to-metal charge transfer (LMCT) and Fe-driven generation of reactive oxygen species (ROS) such as hydroxyl radicals. <em>In vitro</em> studies conducted on human monocytes (THP-1), murine embryonic fibroblasts (MEF-NF), breast cancer cells (4T1), melanoma cells (B16-F10), and colorectal cancer cells (CT26) demonstrated high biocompatibility of the developed MOFs. By reducing reliance on toxic chemical treatments, this study highlights MeBDC MOFs as highly efficient, biocompatible, and sustainable photocatalysts, with significant potential for industrial and domestic water purification applications.</div></div>","PeriodicalId":100480,"journal":{"name":"Environmental Chemistry and Ecotoxicology","volume":"7 ","pages":"Pages 305-318"},"PeriodicalIF":9.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143097922","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Disruptive technology for integrating bioremediation and biodiesel production from persistent toxic aromatic wastes using termite gut yeasts","authors":"Sameh S. Ali ,&nbsp;Rania Al-Tohamy ,&nbsp;Jianzhong Sun","doi":"10.1016/j.enceco.2025.02.005","DOIUrl":"10.1016/j.enceco.2025.02.005","url":null,"abstract":"<div><div>Termite gut yeasts represent a highly promising yet underexplored resource for the integrated bioremediation of aromatic wastes and biodiesel production. These yeasts possess a remarkable ability to degrade complex aromatic compounds, such as lignin-derived phenolics and azo dye intermediates, while simultaneously accumulating lipids, which can be used for biofuel production. However, several challenges, including low lipid yield, toxicity from aromatic intermediates, scalability issues, and high nutrient requirements, limit their industrial application. To overcome these limitations, advanced metabolic engineering, enzyme optimization, and bioreactor design are essential. This review explores the unique advantages of termite gut yeasts, their current deficiencies, and the potential of novel biotechnological approaches such as synthetic biology, systems biology, and co-culture systems. The paper also discusses a strategic roadmap for optimizing termite yeasts for large-scale industrial applications, including the development of clustered regularly interspaced short palindromic repeats (CRISPR) tools, multi-zone bioreactors, and collaborative partnerships with industries. The integration of bioremediation and biodiesel production presents a disruptive and sustainable technology that, if optimized, could revolutionize both waste management and renewable energy sectors.</div></div>","PeriodicalId":100480,"journal":{"name":"Environmental Chemistry and Ecotoxicology","volume":"7 ","pages":"Pages 462-493"},"PeriodicalIF":9.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143510385","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Consumer risks and benefits: Macro and trace elements in muscle of dominant fish species from Vrana Lake, Croatia","authors":"Zorana Kljaković-Gašpić ,&nbsp;Tatjana Orct ,&nbsp;Ankica Sekovanić ,&nbsp;Antonija Sulimanec ,&nbsp;Ivan Župan ,&nbsp;Marijana Matek Sarić","doi":"10.1016/j.enceco.2025.03.008","DOIUrl":"10.1016/j.enceco.2025.03.008","url":null,"abstract":"<div><div>Although fish muscles are a valuable source of protein and essential nutrients necessary for a balanced diet, the presence of environmental contaminants in fish tissue may present potential health risks. This study evaluated the nutritional benefits and health risks associated with consuming fish from Vrana Lake, Croatia, focusing on the inorganic elements in fish meat. It also examined inter-species differences and the influence of biometric parameters on element levels. Eighteen elements were analysed in the muscle tissue of three fish species using inductively coupled plasma mass spectrometry (ICP-MS). Metal(loid) concentrations in fish muscle were partially influenced by eating habits, size, age, and condition index of species. Despite these variations, element concentrations aligned with levels typical of low-contaminated freshwater systems. The concentrations of Cd (0.024–3.15 μg/kg w.m.), Hg (11.3–179 μg/kg w.m.), and Pb (0.303–28.8 μg/kg w.m.) were significantly lower than the European regulatory limits for these toxic elements in food (0.05, 0.3, and 0.3 mg/kg w.m. for Cd, Hg and Pb, respectively). All species had Se:Hg molar ratios above one (range: 2.4–66.1; median: 17.1–22.7) and selenium health benefit values (HBV_Se) above zero (range: 1.13–12.3; median: 2.62–3.44), providing evidence of Se’s protective role against Hg toxicity in the analysed fish species within the monitored ecosystem. Analysis of health risks and benefits indicated that consumption of one, three, and four weekly servings of carp, Prussian carp, and rudd, respectively, provides a valuable source of essential elements for adults without exceeding safety thresholds for toxic elements. A risk assessment confirmed that both cumulative non-carcinogenic and carcinogenic risks associated with fish consumption were within safe limits (HI &lt; 1.0; CCR &lt; 10⁻⁴) for adults. Overall, these findings indicate that inorganic contaminant levels in fish from Vrana Lake are low and do not pose health risks, making these fish a safe and nutritious dietary choice.</div></div>","PeriodicalId":100480,"journal":{"name":"Environmental Chemistry and Ecotoxicology","volume":"7 ","pages":"Pages 655-670"},"PeriodicalIF":9.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143760068","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The global research trends and hotspots on phthalate esters (PAEs): A comprehensive visualization and bibliometric analysis (2000-2023)","authors":"Yajun Hong ,&nbsp;Sizhe Zhang ,&nbsp;Zhenfei Yan ,&nbsp;Saraschandra Naraginti ,&nbsp;Meiqing Zhu ,&nbsp;Dayong Xu","doi":"10.1016/j.enceco.2025.02.001","DOIUrl":"10.1016/j.enceco.2025.02.001","url":null,"abstract":"<div><div>Phthalate esters (PAEs) have garnered significant interest over the last twenty years due to their widespread presence and substantial environmental hazards. Nevertheless, absence of a complete bibliometric study of recent advances and trends in research on PAEs. This paper aims to fill this gap by offering an in-depth analysis of 7069 PAEs-related articles published from 2000 to 2023, highlighting research progress, emerging trends, and key themes. From 2012 to 2023, the number of publications on PAEs surged, reflecting a growing focus within Environmental Sciences. Current research topics predominantly encompass pollution surveys, characterization, spatial distribution, and risk identification, with ecological risk assessment emerging as a prominent research area between 2012 and 2021. China and the United States are the most influential countries according to total publications, total citations and average citations per article, while the Chinese Academy of Sciences and the United States Environmental Protection Agency were identified as leading institutions. PAEs levels in Chinese waters and sediments were notably higher compared to other nations. PAEs present significant risks to human health and ecological systems, necessitating serious attention. This research gives an objective and comprehensive summary of the current situation of PAEs research and suggests future directions for scholars in this domain.</div></div>","PeriodicalId":100480,"journal":{"name":"Environmental Chemistry and Ecotoxicology","volume":"7 ","pages":"Pages 381-393"},"PeriodicalIF":9.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143377337","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Microplastics: An emerging environmental risk factor for gut microbiota dysbiosis and cancer development?","authors":"Sheik Aliya ,&nbsp;Munirah Alhammadi ,&nbsp;Sujatha Ilangovan ,&nbsp;Soobin Han ,&nbsp;Sujina Tamang ,&nbsp;Byoungchul Son ,&nbsp;Hyun Uk Lee ,&nbsp;Yun Suk Huh","doi":"10.1016/j.enceco.2025.03.005","DOIUrl":"10.1016/j.enceco.2025.03.005","url":null,"abstract":"<div><div>Microplastics (MPs) are contaminants of emerging concern, as increased exposure levels pose a major threat to animals and human health. These contaminants insidiously infiltrate the environment by dispersing in air, water, and soil, potentially entering the human food chain. Bioaccumulation of these unmetabolizable MPs in organisms of increasing trophic levels has heightened the urgency to develop approaches to mitigate their input in the environment and day-to-day life. In addition, a disquieting research conclusion suggests a cancer risk associated with these ubiquitous particles, shaking the foundation of our understanding of MPs pollution’s health risks. This review article discusses the current state of knowledge surrounding MPs. The major MPs sources, and how they, along with associated additive chemicals and pathogenic bacteria, find their way into the human body through the food chain are described. In addition, MPs’ potential to cause inflammation and their effects on the gut microbiome and immune system, which can lead to the development of various types of cancers, including lungs, liver, skin, bone marrow, breast, colon, ovarian, cervical, and prostate, and pancreas, metastasis, and development of chemotherapy resistance, are reviewed based on recent literature. Overall, this review has presented evidence of the complex interplay between MPs, gut health, and cancer which warrants in-depth investigation and exploration of effective preventive and lenitive strategies to safeguard vulnerable populations from the potential long-term effects of MPs exposure.</div></div>","PeriodicalId":100480,"journal":{"name":"Environmental Chemistry and Ecotoxicology","volume":"7 ","pages":"Pages 706-728"},"PeriodicalIF":9.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143816988","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":"Split phosphorus application strategies in calcareous soil enhance hyperaccumulator growth without compromising cadmium uptake","authors":"Yijun Liu ,&nbsp;Rui Wang ,&nbsp;Yinzhu Liu ,&nbsp;Weixiang Wang ,&nbsp;Qijie Yu ,&nbsp;Jieqiong Su ,&nbsp;Yahu Hu","doi":"10.1016/j.enceco.2025.03.003","DOIUrl":"10.1016/j.enceco.2025.03.003","url":null,"abstract":"<div><div>Enhancing hyperaccumulator biomass without compromising metal uptake remains a critical challenge in phytoremediation. This study investigated the effects of split phosphorus (P) fertilization on cadmium (Cd) extraction by <em>Solanum alatum</em> Moench in calcareous soil. Phosphorus was applied either fully as basal fertilizer (control) or split into 50 % basal and 50 % top dressing during seedling, flowering, and fruit-setting stages at ratios of 0:1:0, 1:1:1, and 1:2:1. Split P application increased shoot dry biomass by 6.1–26.9 % compared to the control, without altering shoot P concentration, indicating efficient fertilization. Soil phytase activity surged by 415 % during flowering in the treatment with the lowest fertilization level at this stage, suggesting enhanced organic P mineralization. Concurrently, active calcium carbonate concentration decreased by 10.7–12 %, reducing Cd retention and elevating soil bioavailable Cd by 7.6–62 %. Despite biomass dilution, shoot Cd uptake remained stable, ultimately increasing shoot Cd extraction by 10.4–26.1 %. These results demonstrate that split P application amplifies Cd phytoextraction in calcareous soils through dual mechanisms: direct biomass stimulation and indirect Cd mobilization via organic P mineralization and calcium carbonate suppression.</div></div>","PeriodicalId":100480,"journal":{"name":"Environmental Chemistry and Ecotoxicology","volume":"7 ","pages":"Pages 573-579"},"PeriodicalIF":9.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143685402","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Nanoplastics amplify ARG colonization and Alter microbial communities in the phycosphere of Chlorella pyrenoidosa under antibiotic stress","authors":"Hui Yang,&nbsp;Xinrui Xu,&nbsp;Jiaye Deng,&nbsp;Jiamei Wang,&nbsp;Wenyan Lu,&nbsp;Yingying Zhang","doi":"10.1016/j.enceco.2025.06.002","DOIUrl":"10.1016/j.enceco.2025.06.002","url":null,"abstract":"<div><div>The widespread use of antibiotics has led to the accumulation of antibiotic resistance genes (ARGs) in aquatic environments, raising significant concerns for both ecosystem stability and human health. The phycosphere is an important site for the enrichment of bacteria and ARGs. Simultaneously, increasing plastic pollution has introduced nanoplastics (NPs) into water systems globally. Limited research exists on whether NPs might influence antibiotic effects on phycosphere bacteria and ARG dynamics. This study addresses this gap by employing the green algae <em>Chlorella pyrenoidosa</em> as a model to examine the effects of combined NP and antibiotic exposure-specifically sulfamethoxazole (SMX) and ciprofloxacin (CIP)-on algal growth, phycosphere and free-living bacterial communities, and ARG abundance. The results demonstrate that NPs alone have minimal effects on <em>C. pyrenoidosa</em> growth and physiology. However, combined NP and antibiotic exposure significantly enhances antibiotic toxicity to the algae. Additionally, NP exposure notably increases <em>p_Cyanobacteria</em> abundance in the phycosphere while negatively affecting <em>p_Proteobacteria</em>, which are vital for water purification. While NPs do not directly promote ARG proliferation, they significantly amplify the antibiotic-induced abundance of ARGs under combined exposure in both phycosphere and free-living environment. Furthermore, the phycosphere harbors a higher total abundance of bacterial communities and ARGs than the free-living environment. It has a concentrated pattern of fewer bacterial species but multiple key genes. In contrast, the free-living environment features dispersed and diverse communities with fewer key genes. This suggests the phycosphere's critical role in ARG dissemination. These findings highlight NPs as amplifiers of ecological risk in antibiotic-contaminated environments and provide insights into ARG dissemination mechanisms in aquatic ecosystems.</div></div>","PeriodicalId":100480,"journal":{"name":"Environmental Chemistry and Ecotoxicology","volume":"7 ","pages":"Pages 1216-1226"},"PeriodicalIF":9.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144270049","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":"Groundwater contamination, fate, and transport of fluoride and nitrate in Western Jilin, China: Implications for water quality and health risks","authors":"Muhammad Yousuf Jat Baloch ,&nbsp;Wenjing Zhang ,&nbsp;Juanfen Chai ,&nbsp;Baig Abdullah Al Shoumik ,&nbsp;Aqil Tariq ,&nbsp;Javed Iqbal ,&nbsp;Shakeel Ahmed Talpur ,&nbsp;Sajid Hussain ,&nbsp;Zainab Khan","doi":"10.1016/j.enceco.2025.04.010","DOIUrl":"10.1016/j.enceco.2025.04.010","url":null,"abstract":"<div><div>This study investigates groundwater quality in confined and unconfined Quaternary aquifers in Western Jilin, focusing on key parameters: fluoride and nitrate. Most physicochemical parameters adhered to established guidelines; however, fluoride in unconfined Quaternary aquifers increased from 1.50 mg/L in 2010 to 1.88 mg/L in 2020, while nitrate reached 12.96 mg/L and TDS ranged between 2150 and 2564 mg/L. Confined Quaternary aquifers generally met quality standards with lower pollutant levels. The primary groundwater types were identified as Ca²⁺ + Mg²⁺ − HCO₃⁻ + CO₃²⁻ and Na⁺ + K⁺ − HCO₃⁻ + CO₃²⁻, indicating enhanced cation exchange processes. The temporal analysis showed an increase in unsuitable drinking water samples in confined aquifers from 2.70 % in 2000, 11.11 % in 2010 and 30.56 % in 2020, and in unconfined aquifers at 10.20 %, 12.73 %, and 10.42 % for 2000, 2010, and 2020, respectively. Groundwater pollution zones indicate an increase in contamination in confined aquifers and widespread fluoride contamination in unconfined aquifers. Health risks assessment revealed significant risks: fluoride posed high risks, and nitrate was moderate risk, particularly for infants, followed by children and adults. Hazard index trends indicated an increase in samples exceeding recommended limits for infants, rising in confined aquifers from 70.27 % in 2000 to 98.96 % in 2020, and in unconfined aquifers from 79.59 % to 98.96 % over the same period. This trend highlights higher contamination risks in unconfined aquifers. Similar findings were observed in spatial distribution analyses, which confirmed heightened aquifer vulnerability due to industrial activities and agricultural practices. The study emphasizes the need for targeted strategies to address fluoride and nitrate contamination in susceptible aquifer zones.</div></div>","PeriodicalId":100480,"journal":{"name":"Environmental Chemistry and Ecotoxicology","volume":"7 ","pages":"Pages 1189-1202"},"PeriodicalIF":9.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144231017","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":"Biochar as a tool to optimise Miscanthus sinensis resilience and phytoremediation efficiency: Case study of contamination by mixture of Ni and 4.4′-DDE","authors":"Asil Nurzhanova ,&nbsp;Valentina Pidlisnyuk ,&nbsp;Asiya Nurmagambetova ,&nbsp;Zhadyra Zhumasheva ,&nbsp;Lyazat Naizabayeva ,&nbsp;Aigerim Mamirova","doi":"10.1016/j.enceco.2025.04.006","DOIUrl":"10.1016/j.enceco.2025.04.006","url":null,"abstract":"<div><h3>Background</h3><div>This study investigated the effects of 1 % commercial sewage sludge-based biochar on the physiological, biochemical, and phytoremediation parameters of <em>Miscanthus sinensis</em> And. (<em>M. sinensis</em>) under greenhouse conditions. Biochar was applied to soils subjected to mono- and combined contaminations involving 4.4′-DDE and Ni ions.</div></div><div><h3>Findings</h3><div>Biochar incorporation led to (a) a significant increase in plant yield (up to 121 %), (b) enhanced free proline (up to 366 %) and total protein content (up to 135 %), (c) increased levels of the auxiliary pigment chlorophyll <em>b</em> (up to 154 %), (d) partially restored electron transport in photosystem II (up to 36.9 %), and (e) reduced antioxidant enzyme activity in <em>M. sinensis</em> leaves. However, when applied to control soil, biochar induced plant stress, highlighting its suitability primarily for contaminated environments. Post-vegetation analysis confirmed that biochar sorbed Ni and Cr ions from the soil, desorbed Cu and Zn, and had no effect on Pb across all treatments. Furthermore, biochar incorporation significantly reduced plant uptake of 4.4′-DDE, decreasing its bioavailability by 38.9 % and 59.1 % under combined and mono-DDE contamination, respectively, compared to the respective unamended treatments.</div></div><div><h3>Conclusions</h3><div>Under combined contamination, biochar exhibited selective sorption activity, enhancing 4.4′-DDE adsorption while reducing Ni ion retention, indicating that Ni stabilisation depends on both biochar properties and the nature of contamination. Additionally, biochar’s ability to desorb Cu and Zn suggests its potential use in agricultural soils with Cu and/or Zn deficiencies. These findings underscore biochar’s dual role in promoting <em>M. sinensis</em> growth and reducing pollutant bioavailability, demonstrating its potential to enhance the phytoremediation of complexly contaminated soils.</div></div>","PeriodicalId":100480,"journal":{"name":"Environmental Chemistry and Ecotoxicology","volume":"7 ","pages":"Pages 802-818"},"PeriodicalIF":9.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143865134","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":"Methylene blue removal using zinc and magnesium oxides doped banana peels: Isotherm, kinetics and mechanism","authors":"Pornsawai Praipipat ,&nbsp;Pimploy Ngamsurach ,&nbsp;Kanokwan Bunchu ,&nbsp;Varunya Lekwaree","doi":"10.1016/j.enceco.2025.04.005","DOIUrl":"10.1016/j.enceco.2025.04.005","url":null,"abstract":"<div><div>Three banana peel materials which were banana-doped ZnO beads (BZB), banana-doped MgO beads (BMB), and banana-doped ZnO + MgO beads (BZMB) for adsorbing methylene blue dye (MB) were synthesized and characterized by several techniques of XRD, FTIR, FESEM-FIB, EDX, BET, and pH_pzc. Batch experiments, material reusability experiments, adsorption patterns and mechanisms, and thermodynamic studies were examined their abilities for adsorbing MB. The specific ZnO or MgO peaks and chemical functional groups of Zn<img>O, and Mg<img>O were detected in all materials by XRD and FTIR analysis. They had a spherical shape with heterogeneous surfaces, and the specific characteristic structure of ZnO or MgO and the elements of zinc and magnesium were found by FESEM-FIB and EDX analysis. The behaviors of N₂ adsorption-desorption isotherm of all materials were type I with H4 hysteresis loop indicating microporous materials. The pH_pzc values of BZB, BMB, and BZMB were 5.93, 9.61, and 8.95. BZMB demonstrated a higher MB removal efficiency at 98.68 % than BZB and BMB, so the additions of both ZnO and MgO increased MB removal efficiency more than the addition of only ZnO or MgO. Moreover, they could be reused in more than six adsorption cycles with high removal efficiencies of more than 54 %. Freundlich and pseudo-second-order kinetic models were best-fit models for all materials corresponding to a chemisorption process. They were exothermic processes that did not favor MB adsorptions with increasing temperature.</div></div>","PeriodicalId":100480,"journal":{"name":"Environmental Chemistry and Ecotoxicology","volume":"7 ","pages":"Pages 729-740"},"PeriodicalIF":9.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143820873","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}