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Acute, chronic, and behavioral toxicity of fluorine-free foams to earthworm species Eisenia fetida and Dendrobaena veneta
IF 8.1 2区 环境科学与生态学
Chemosphere Pub Date : 2024-12-01 DOI: 10.1016/j.chemosphere.2024.143860
Roger Yeardley , Michael Penrose , Paola Rodríguez Montoyo , Mohamed Ateia
{"title":"Acute, chronic, and behavioral toxicity of fluorine-free foams to earthworm species Eisenia fetida and Dendrobaena veneta","authors":"Roger Yeardley ,&nbsp;Michael Penrose ,&nbsp;Paola Rodríguez Montoyo ,&nbsp;Mohamed Ateia","doi":"10.1016/j.chemosphere.2024.143860","DOIUrl":"10.1016/j.chemosphere.2024.143860","url":null,"abstract":"<div><div>Aqueous film-forming foams (AFFF) containing per- and polyfluoroalkyl substances (PFAS) are widely used as fire suppressants. Due to rising health and environmental concerns, fluorine-free foams (F3) are being developed and tested as safer alternatives. However, the impact of these replacement products on ecologically important earthworms has not been adequately studied. This study addresses this gap by comparing the acute, chronic, and behavioral effects of two F3 formulations, BioEx Ecopol and Angus Fire Jetfoam, with a commonly used PFAS-containing AFFF, Buckeye, on two species of earthworms. Soil treated with BioEx Ecopol and Buckeye at the maximum 3% concentration did not cause significant acute mortality in <em>Eisenia fetida</em>, whereas Angus Fire Jetfoam resulted in 100% mortality at the same concentration. In a 28-day chronic test, weight loss was observed in <em>Dendrobaena veneta</em> worms exposed to soil treated with Angus Fire Jetfoam. Additionally, both <em>Eisenia fetida</em> and <em>Dendrobaena veneta</em> demonstrated almost complete avoidance of soils treated with any of the three foams at 3% concentration, indicating potential ecological effects despite lack of acute toxicity by two of the products. The differences in toxicity are likely due to the distinct chemical compositions and surfactant concentrations in these foams. BioEx Ecopol and Buckeye, despite their differing surfactant mixtures, exhibited lower acute toxicity, whereas Angus Fire Jetfoam's high mortality rate points to a potentially problematic chemical formulation. By understanding the toxicity of current formulations, this study supports the ongoing development and evaluation of new fire suppression products, supporting the creation of safer technologies.</div></div>","PeriodicalId":276,"journal":{"name":"Chemosphere","volume":"369 ","pages":"Article 143860"},"PeriodicalIF":8.1,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142743142","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
New insights into typical biodegradable plastics in rapid pyrolysis: Kinetics, product evolution and transformation mechanism
IF 8.1 2区 环境科学与生态学
Chemosphere Pub Date : 2024-12-01 DOI: 10.1016/j.chemosphere.2024.143834
Jiuli Ruan , Zheng Liu , Kang Gao , Lingling She , Jingyang Liu , Yuwen Guo , Feilong Zhang
{"title":"New insights into typical biodegradable plastics in rapid pyrolysis: Kinetics, product evolution and transformation mechanism","authors":"Jiuli Ruan ,&nbsp;Zheng Liu ,&nbsp;Kang Gao ,&nbsp;Lingling She ,&nbsp;Jingyang Liu ,&nbsp;Yuwen Guo ,&nbsp;Feilong Zhang","doi":"10.1016/j.chemosphere.2024.143834","DOIUrl":"10.1016/j.chemosphere.2024.143834","url":null,"abstract":"<div><div>Biodegradable plastics (BP) have undergone rapid development in the field of replacing traditional packaging plastics. However, their recycling and disposal systems are unclear, and the standards are different, causing new environmental pollution. The rapid and appropriate disposal of BP has become a worthy direction of exploration. Here, rapid pyrolysis technology was used to explore the recycling of BP, and the product evolution and transformation mechanism of typical BP (BP1∼BP4) were analyzed. The results show that the main reaction stages of BP pyrolysis are concentrated at approximately 260∼450 °C. Most of the heat treatment stages of BP conform to the random nucleation and nuclear growth model An (n = 1.5, 2, 2.5. 3). The gaseous products of BP pyrolysis were mainly 1, 3-butadiene. The top four pyrolysis components are the same for the liquid products of BP1, BP2, and BP4, which are mainly benzoic acid (42.54%–44.67%). However, the proportion of polycyclic aromatic substances in the products of the BP3 pyrolysis solution was as high as 63.85%. For the transformation mechanism, BP containing polylactic acid (PLA) and polybutylene terephthalate-adipate (PBAT) is mainly composed of C–O bond fractures at the ester group and intramolecular hydrogen transfer to form a carboxyl group and C<img>C. This study of BP pyrolysis provides an important scientific basis and theoretical reference for its rational and rapid treatment and product recovery and reuse.</div></div>","PeriodicalId":276,"journal":{"name":"Chemosphere","volume":"369 ","pages":"Article 143834"},"PeriodicalIF":8.1,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142743227","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Progress on the removal of PFAS contamination in water by different forms of iron-modified biochar
IF 8.1 2区 环境科学与生态学
Chemosphere Pub Date : 2024-12-01 DOI: 10.1016/j.chemosphere.2024.143844
Binglu Teng , Zhenhua Zhao , Liling Xia , Jiangxuan Wu , Hailong Wang
{"title":"Progress on the removal of PFAS contamination in water by different forms of iron-modified biochar","authors":"Binglu Teng ,&nbsp;Zhenhua Zhao ,&nbsp;Liling Xia ,&nbsp;Jiangxuan Wu ,&nbsp;Hailong Wang","doi":"10.1016/j.chemosphere.2024.143844","DOIUrl":"10.1016/j.chemosphere.2024.143844","url":null,"abstract":"<div><div>Per- and polyfluoroalkyl substances (PFAS) contamination poses a significant threat to human health. Iron-modified biochar is an eco-friendly, cost-effective, and efficient adsorption material. There is a beneficial interaction between iron groups and biochar to remove PFAS from water through adsorption and degradation. The removal mechanism of the iron-modified biochar mainly includes advanced oxidation, iron group reduction, and adsorption. The adsorption mechanism shifted from being dominated by hydrophobic interactions to electrostatic interactions and ion exchange. Different forms of iron-modified biochar showed excellent removal of short-chain PFAS, which is not found in other modified biochar. Few existing studies have systematically investigated the role of various forms of iron-modified biochar in PFAS removal. Accordingly, this review explores the following areas, the synthesis methods of different forms of iron-modified biochar, the removal effect on long and short-chain PFAS, the key factors affecting removal capacity and the mechanisms of their interaction, the mechanism of PFAS removal, and the regeneration capacity of the composites. In this study, the potential of different forms of iron-modified biochar for PFAS remediation was explored in depth. To provide new ideas for subsequent studies of PFAS removal using iron-modified biochar.</div></div>","PeriodicalId":276,"journal":{"name":"Chemosphere","volume":"369 ","pages":"Article 143844"},"PeriodicalIF":8.1,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142756055","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Pollutants in urban runoff: Scientific evidence on toxicity and impacts on freshwater ecosystems 城市径流中的污染物:关于毒性和对淡水生态系统影响的科学证据。
IF 8.1 2区 环境科学与生态学
Chemosphere Pub Date : 2024-12-01 DOI: 10.1016/j.chemosphere.2024.143806
Lorena Cojoc , Núria de Castro-Català , Ioar de Guzmán , Julene González , Maite Arroita , Neus Besolí-Mestres , Isabel Cadena , Anna Freixa , Oriol Gutiérrez , Aitor Larrañaga , Isabel Muñoz , Arturo Elosegi , Mira Petrovic , Sergi Sabater
{"title":"Pollutants in urban runoff: Scientific evidence on toxicity and impacts on freshwater ecosystems","authors":"Lorena Cojoc ,&nbsp;Núria de Castro-Català ,&nbsp;Ioar de Guzmán ,&nbsp;Julene González ,&nbsp;Maite Arroita ,&nbsp;Neus Besolí-Mestres ,&nbsp;Isabel Cadena ,&nbsp;Anna Freixa ,&nbsp;Oriol Gutiérrez ,&nbsp;Aitor Larrañaga ,&nbsp;Isabel Muñoz ,&nbsp;Arturo Elosegi ,&nbsp;Mira Petrovic ,&nbsp;Sergi Sabater","doi":"10.1016/j.chemosphere.2024.143806","DOIUrl":"10.1016/j.chemosphere.2024.143806","url":null,"abstract":"<div><div>Urban runoff effluents transport multiple pollutants collected from urban surfaces. which ultimately reach freshwater ecosystems. We here collect the existing scientific evidence on the urban runoff impacts on aquatic organisms and ecosystem functions, assessed the potential toxicity of the most common pollutants present in urban runoff, and characterized the ecotoxicological risk for freshwaters. We used the Toxic Units models to estimate the toxicity of individual chemicals to freshwater biota and observed that the highest ecotoxicological risk of urban runoff was associated to metals, polycyclic aromatic hydrocarbons (PAHs) and pesticides and, in a few cases, to phthalates. The potential risk was highest for copper and zinc, as well as for anthracene, fluoranthene, Di(2-ethylhexyl) phthlate (DEHP), imidacloprid, cadmium, mercury, and chromium. These pollutants had contrasting effects on freshwater biological groups, though the risk overall decreased from basal to upper trophic levels. Our analysis evidenced a lack of data on ecotoxicological effects of several pollutants present in urban runoff effluents, caused by lack of toxicity data and by the inadequate representation of biological groups in the ecotoxicological databases. Nevertheless, evidence indicates that urban runoff presents ecotoxicological risk for freshwater biota, which might increase if hydrological patterns become extreme, such as long dry periods and floods. Our study highlights the importance of considering both the acute and chronic toxicity of urban effluent pollutants, as well as recognizing the interplay with other environmental stressors, to design adequate environmental management strategies on urban freshwater ecosystems receiving urban runoff.</div></div>","PeriodicalId":276,"journal":{"name":"Chemosphere","volume":"369 ","pages":"Article 143806"},"PeriodicalIF":8.1,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142741632","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Response of bacterial communities in desert grassland soil profiles to acid mine drainage pollution
IF 8.1 2区 环境科学与生态学
Chemosphere Pub Date : 2024-12-01 DOI: 10.1016/j.chemosphere.2024.143831
Jianfei Shi , Wenting Qian , Zhibin Zhou , Zhengzhong Jin
{"title":"Response of bacterial communities in desert grassland soil profiles to acid mine drainage pollution","authors":"Jianfei Shi ,&nbsp;Wenting Qian ,&nbsp;Zhibin Zhou ,&nbsp;Zhengzhong Jin","doi":"10.1016/j.chemosphere.2024.143831","DOIUrl":"10.1016/j.chemosphere.2024.143831","url":null,"abstract":"<div><div>Acid mine drainage (AMD) causes serious environmental pollution, which imposes stresses on soil ecosystems. Therefore, it is critical to study the responses of soil bacterial communities to AMD pollution in ecologically fragile desert grasslands. Here, the bacterial community composition, structure, and assembly processes in vertical soil profiles of an AMD contaminated desert grassland were explored using 16S rRNA high-throughput sequencing. The results showed that the surface layers of the profiles exhibited lower pH and higher heavy metals (HMs) content due to AMD influence. The AMD contamination led to reduced bacterial diversity in the surface soil layer of the profiles and significantly changed the bacterial community composition and structure. Gradients in pH, TK, TN, and HMs were the main factors driving bacterial community variability. In contrast to the uncontaminated profile, deterministic processes were important in shaping soil bacterial community in the AMD contaminated profiles. These findings will enhance understanding about the responses of soil bacteria in desert grassland soil to the environmental changes caused by AMD contamination and will improve the remediation of AMD contaminated soil.</div></div>","PeriodicalId":276,"journal":{"name":"Chemosphere","volume":"369 ","pages":"Article 143831"},"PeriodicalIF":8.1,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142743755","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Trace element uptake by macroalgae: Organic colloids as a source of metals, including Fe and rare earth elements
IF 8.1 2区 环境科学与生态学
Chemosphere Pub Date : 2024-12-01 DOI: 10.1016/j.chemosphere.2024.143849
Jean-Alix Barrat , Thierry Heulin , Germain Bayon , Matthieu Waeles , Laurent Chauvaud , Marie-Laure Rouget
{"title":"Trace element uptake by macroalgae: Organic colloids as a source of metals, including Fe and rare earth elements","authors":"Jean-Alix Barrat ,&nbsp;Thierry Heulin ,&nbsp;Germain Bayon ,&nbsp;Matthieu Waeles ,&nbsp;Laurent Chauvaud ,&nbsp;Marie-Laure Rouget","doi":"10.1016/j.chemosphere.2024.143849","DOIUrl":"10.1016/j.chemosphere.2024.143849","url":null,"abstract":"<div><div>We determined the concentrations of trace elements including Fe, Al, rare earth elements and Y (REY), in <em>Ascophyllum nodosum</em>, one of the most abundant brown macroalgae in the North Atlantic. Samples were collected in the Bay of Brest (Brittany, France) and in the estuary of its main contributing river. The Y/Ho, Al/Ga, and Zr/Hf ratios display values distinctive from seawater, but similar to the continental crust; an observation which we show cannot be explained by the incorporation of terrigenous particles, nor inorganic colloids. On the other hand, REY, Ga, Al, as well as other trace elements such as Th, Sc, Pb and Cr, correlate strongly with Fe abundances. Since all these elements are chiefly carried by organic colloids, we propose that colloidal uptake onto the surface of the algae controls the bioaccumulation of these metals. Their assimilation or internalization by algae requires biological pathways yet to be determined. This process is vital for these organisms, as organic colloids appear to be their main source of Fe, an essential nutrient. However, it also allows the accumulation of some potentially toxic metals in algae (e.g., Pb), with implications on the overall health of coastal ecosystems.</div></div>","PeriodicalId":276,"journal":{"name":"Chemosphere","volume":"369 ","pages":"Article 143849"},"PeriodicalIF":8.1,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142756765","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Probing the potential mechanism of permethrin exposure on Alzheimer's disease through enantiomer-specific network toxicology, multi-spectroscopic, and docking approaches 通过对映体特异性网络毒理学、多光谱和对接方法,探索接触氯菊酯对阿尔茨海默病的潜在影响机制。
IF 8.1 2区 环境科学与生态学
Chemosphere Pub Date : 2024-12-01 DOI: 10.1016/j.chemosphere.2024.143786
Tianzhu Guan , Ning Li , Ya Gao , Mingyuan Gao , Qin Hu , Yajun Gao , Lixia Xiao , Zhenquan Yang , Qiaoquan Liu
{"title":"Probing the potential mechanism of permethrin exposure on Alzheimer's disease through enantiomer-specific network toxicology, multi-spectroscopic, and docking approaches","authors":"Tianzhu Guan ,&nbsp;Ning Li ,&nbsp;Ya Gao ,&nbsp;Mingyuan Gao ,&nbsp;Qin Hu ,&nbsp;Yajun Gao ,&nbsp;Lixia Xiao ,&nbsp;Zhenquan Yang ,&nbsp;Qiaoquan Liu","doi":"10.1016/j.chemosphere.2024.143786","DOIUrl":"10.1016/j.chemosphere.2024.143786","url":null,"abstract":"<div><div>Latest observations indicated that exposure of organic environmental neurotoxins may increase the potential risk of Alzheimer's diseases (AD). As a suspected food-derived risk factor, permethrin, composed of <em>cis</em>-isomer and <em>trans</em>-isomer, is widely used as a broad-spectrum pyrethroid insecticide in agricultural crops for the arthropod pests controlling. Thus, evaluating the impact of permethrin exposure is of great importance to human health. In this study, we performed the toxicological network approach to decipher AD-related mechanisms of <em>cis</em>-permethrin and <em>trans</em>-permethrin. Based on the toxicological network construction and central network topological analysis, human serum albumin (HSA) was selected as the core targets in AD-related developing. From the analysis of the steady state and time-resolved fluorescence quenching of HSA in presence of permethrin mixture, it has been inferred that the nature of the quenching mainly originates from the dynamic modes. Experimentally, the thermodynamic parameters revealed hydrophobic interactions and van der Waals forces played a major role during quenching process. Tryptophan synchronous fluorescence spectra were blue shifted whereas the position of tyrosine synchronous spectra was red shifted during the complex formation. Three-dimensional fluorescence together with FT-IR experiment confirmed that permethrin caused the secondary structure changes in HSA. To better understand the binding patterns between HSA and <em>cis/trans</em> -permethrin, theoretical calculation and molecular docking were implemented. According to the electrostatic potential map, the electrophilic attack region corresponds for electron rich oxygen atoms, while the nucleophilic attack regions were mainly located at over the benzene rings and methyl on cyclopropane ring of permethrins. Docking results shown that <em>cis</em>-permethrin and <em>trans</em>-permethrin located in hydrophobic pocket nearby Domain IIA with the different binding affinity (−7.6 and −9.2 kcal/mol), which consistent with the competitive displacement experiment. All these findings generated in the present study facilitated the elucidation of the molecular mechanism details between permethrin mixture and HSA, which provided fresh insights into the links between environmental exposure and AD-related adverse health outcomes.</div></div>","PeriodicalId":276,"journal":{"name":"Chemosphere","volume":"369 ","pages":"Article 143786"},"PeriodicalIF":8.1,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142718067","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Valorization of waste pistachio shells to bimetallic magnetic hydrochar for sustainable dual-action wastewater remediation: A comprehensive study with mechanistic insights and life cycle assessment
IF 8.1 2区 环境科学与生态学
Chemosphere Pub Date : 2024-12-01 DOI: 10.1016/j.chemosphere.2024.143818
Monark Bhatt , Harshil Thakkar , Janki Patel , Miraj Patel , Sonal Thakore
{"title":"Valorization of waste pistachio shells to bimetallic magnetic hydrochar for sustainable dual-action wastewater remediation: A comprehensive study with mechanistic insights and life cycle assessment","authors":"Monark Bhatt ,&nbsp;Harshil Thakkar ,&nbsp;Janki Patel ,&nbsp;Miraj Patel ,&nbsp;Sonal Thakore","doi":"10.1016/j.chemosphere.2024.143818","DOIUrl":"10.1016/j.chemosphere.2024.143818","url":null,"abstract":"<div><div>This research outlines an integrated experimental and theoretical strategy for converting Pistachio-shells by hydrothermal carbonization into a bimetallic magnetic hydrochar (BMHC), for effective adsorptive-degradation of organic pollutants. Environmental sustainability of BMHC is supported by life cycle assessment(LCA). Adsorption experiments showed rapid and efficient dye (MB, CV) and antibiotic (TC) removal within 50 min, with &gt;97% efficiency. The catalytic properties of BMHC, facilitated Peroxymonosulfate (PMS)-driven complete degradation of targeted contaminants, through ROS generation. DFT calculations demonstrated the regioselectivity for targeted moieties. The degradation intermediates were identified by LCMS and possible degradation pathways were derived. <em>In-silico</em> toxicity assessment of these intermediates confirmed the process safety. Employing 'Hook and Destroy' approach, BMHC demonstrated magnetic separation and reusability over five cycles. This extensive research demonstrates waste-to-resource conversion of Pistachio-shells to BMHC, with dual functionality in adsorption and degradation, as well as magnetic recoverability, which advocates its potency for water treatment solutions.</div></div>","PeriodicalId":276,"journal":{"name":"Chemosphere","volume":"369 ","pages":"Article 143818"},"PeriodicalIF":8.1,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142743756","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Cobalt doped g-C3N4 activated peroxymonosulfate for organic pollutant degradation: Alterations in cobalt species and reactive oxygen species 掺钴 g-C3N4 活化过硫酸盐降解有机污染物:钴物种和活性氧物种的变化。
IF 8.1 2区 环境科学与生态学
Chemosphere Pub Date : 2024-12-01 DOI: 10.1016/j.chemosphere.2024.143763
Yuesen Wang , Yanchun Huang , Yi Chen , Luming Dou , Yi Ren , Naiwen Li , Bo Lai , Bo Tan
{"title":"Cobalt doped g-C3N4 activated peroxymonosulfate for organic pollutant degradation: Alterations in cobalt species and reactive oxygen species","authors":"Yuesen Wang ,&nbsp;Yanchun Huang ,&nbsp;Yi Chen ,&nbsp;Luming Dou ,&nbsp;Yi Ren ,&nbsp;Naiwen Li ,&nbsp;Bo Lai ,&nbsp;Bo Tan","doi":"10.1016/j.chemosphere.2024.143763","DOIUrl":"10.1016/j.chemosphere.2024.143763","url":null,"abstract":"<div><div>Cobalt-based materials are promising catalysts for activating peroxymonosulfate (PMS) to degrade organic pollutants. Among various cobalt-based catalysts, the alteration in cobalt species and the reactive species produced are not fully understood. Herein, four materials were synthesized by controlling synthesis methods and doping of g-C<sub>3</sub>N<sub>4</sub> to regulate cobalt species. Through two methods, ZIF/Co and Co<sub>3</sub>O<sub>4</sub>, whose main cobalt species are Co–O/Co–N and Co<img>O/O–Co<img>O, were synthesized. On this basis, ZIF/Co–CN and Co<sub>3</sub>O<sub>4</sub>–CN were synthesized by adding g-C<sub>3</sub>N<sub>4</sub>. Then, the four materials were used to activate PMS for carbamazepine (CBZ) degradation, focusing on the correlation between active sites and reactive species. Co<img>O/O–Co<img>O mainly led to the formation of free radicals, while Co–N tended to produce non-free radicals. The addition of g-C<sub>3</sub>N<sub>4</sub> would facilitate non-free radical catalysis by promoting the conversion of Co–O to Co–N and enhancing the catalytic role of C and N. Finally, the systems with a high proportion of non-free radicals showed better degradation performance when multiple pollutants co-existed, and reactive species may be selective to different pollutants. The findings have significance for the synthesis design of cobalt-based catalysts and the regulation of reactive species to degrade different pollutants practically.</div></div>","PeriodicalId":276,"journal":{"name":"Chemosphere","volume":"369 ","pages":"Article 143763"},"PeriodicalIF":8.1,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142712065","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
3D Pt@ZnAl-LDH catalyst on low-grade charcoal: A novel electrochemical platform for efficient textile dye degradation and glycerol oxidation 低级木炭上的 3D Pt@ZnAl-LDH 催化剂:高效纺织染料降解和甘油氧化的新型电化学平台。
IF 8.1 2区 环境科学与生态学
Chemosphere Pub Date : 2024-12-01 DOI: 10.1016/j.chemosphere.2024.143807
Mohammad Hossein Shahabifard , Sajjad Eftekhari , Kiana Parchami , Fatemeh Bahrami , Mohammad Askarian-Amiri , Azam Pirkarami , Nargess Yousefi-Limaee
{"title":"3D Pt@ZnAl-LDH catalyst on low-grade charcoal: A novel electrochemical platform for efficient textile dye degradation and glycerol oxidation","authors":"Mohammad Hossein Shahabifard ,&nbsp;Sajjad Eftekhari ,&nbsp;Kiana Parchami ,&nbsp;Fatemeh Bahrami ,&nbsp;Mohammad Askarian-Amiri ,&nbsp;Azam Pirkarami ,&nbsp;Nargess Yousefi-Limaee","doi":"10.1016/j.chemosphere.2024.143807","DOIUrl":"10.1016/j.chemosphere.2024.143807","url":null,"abstract":"<div><div>The development of sustainable and efficient electrochemical processes is crucial for addressing global challenges related to water scarcity. In this study, we present a novel 3D core-shell electrocatalyst, Pt@ZnAl-LDH, supported on low-grade charcoal (LGC), which exhibits exceptional electrocatalytic activity for the degradation and decolorization of dye and the electrocatalytic conversion of glycerol to valuable C<sub>3</sub> chemicals. The electrocatalytic degradation of methylene blue dye from water was investigated with a focus on the impact of temperature, pH, and dye concentration. The Pt@ZnAl-LDH/LGC anode demonstrates high selectivity for converting glucose into lactate and other C<sub>3</sub> products, achieving an impressive 85% conversion rate at 0.5 V <em>vs</em>. Furthermore, the electrode achieves an exceptionally high level of selectivity for C<sub>3</sub> products, reaching 86% at 2.2 V <em>vs</em>, significantly outperforming other electrodes. Theoretical calculations and electrochemical in situ techniques reveal that the incorporation of ZnAl-LDH enhances the adsorption of hydroxyl species, leading to improved glucose oxidation reaction performance. The 3D Pt@ZnAl-LDH/LGC catalyst optimizes glycerol adsorption, preventing the formation of unwanted intermediates and ensuring high activity and selectivity for C<sub>3</sub> products. This work presents a novel electrocatalytic compound for the degradation of toxic dyes and the production of valuable C<sub>3</sub> products using an inexpensive aqueous glucose oxidation method.</div></div>","PeriodicalId":276,"journal":{"name":"Chemosphere","volume":"369 ","pages":"Article 143807"},"PeriodicalIF":8.1,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142741553","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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