Environmental Science and Ecotechnology最新文献

{"title":"PAHs removal by soil washing with thiacalix[4]arene tetrasulfonate","authors":"Le-Yao Xing ,&nbsp;Guan-Han Meng ,&nbsp;Ji-Xian Yang ,&nbsp;Ming-Han Xu ,&nbsp;Yi-Ming Xu ,&nbsp;Hai-Xiao Xie ,&nbsp;Ai-Jie Wang ,&nbsp;Yi-Lu Sun","doi":"10.1016/j.ese.2024.100422","DOIUrl":"10.1016/j.ese.2024.100422","url":null,"abstract":"<div><p>Remediating soil contaminated with polycyclic aromatic hydrocarbons (PAHs) presents a significant environmental challenge due to their toxic and carcinogenic properties. Traditional PAHs remediation methods—chemical, thermal, and bioremediation—along with conventional soil-washing agents like surfactants and cyclodextrins face challenges of cost, ecological harm, and inefficiency. Here we show an effective and environmentally friendly calixarene derivative for PAHs removal through soil washing. Thiacalix[4]arene tetrasulfonate (TCAS) has a unique molecular structure of a sulfonate group and a sulfur atom, which enhances its solubility and facilitates selective binding with PAHs. It forms host-guest complexes with PAHs through π-π stacking, OH-π interactions, hydrogen bonding, van der Waals forces, and electrostatic interactions. These interactions enable partial encapsulation of PAH molecules, aiding their desorption from the soil matrix. Our results show that a 0.7% solution of TCAS can extract approximately 50% of PAHs from contaminated soil while preserving soil nutrients and minimizing adverse environmental effects. This research unveils the pioneering application of TCAS in removing PAHs from contaminated soil, marking a transformative advancement in resource-efficient and sustainable soil remediation strategies.</p></div>","PeriodicalId":34434,"journal":{"name":"Environmental Science and Ecotechnology","volume":"21 ","pages":"Article 100422"},"PeriodicalIF":12.6,"publicationDate":"2024-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S266649842400036X/pdfft?md5=96bac56bc159130941db8e4b33781ba9&pid=1-s2.0-S266649842400036X-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140788486","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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":"Evaluating a river's ecological health: A multidimensional approach","authors":"Qiuyun Zhao ,&nbsp;Yangyang Zhang ,&nbsp;Xiuwen Li ,&nbsp;Xiaodong Hu ,&nbsp;Rui Huang ,&nbsp;Jixiong Xu ,&nbsp;Zilong Yin ,&nbsp;Xinjie Gu ,&nbsp;Yuncheng Xu ,&nbsp;Jinbao Yin ,&nbsp;Qing Zhou ,&nbsp;Aimin Li ,&nbsp;Peng Shi","doi":"10.1016/j.ese.2024.100423","DOIUrl":"10.1016/j.ese.2024.100423","url":null,"abstract":"<div><p>Evaluating the health of river surface water is essential, as rivers support significant biological resources and serve as vital drinking water sources. While the Water Quality Index (WQI) is commonly employed to evaluate surface water quality, it fails to consider biodiversity and does not fully capture the ecological health of rivers. Here we show a comprehensive assessment of the ecological health of surface water in the lower Yangtze River (LYR), integrating chemical and biological metrics. According to traditional WQI metrics, the LYR's surface water generally meets China's Class II standards. However, it also contains 43 high-risk emerging contaminants; nitrobenzenes are found at the highest concentrations, representing 25–90% of total detections, while polycyclic aromatic hydrocarbons present the most substantial environmental risks, accounting for 81–93% of the total risk quotient. Notably, the plankton-based index of biological integrity (P-IBI) rates the ecological health of the majority of LYR water samples (59.7%) as ‘fair’, with significantly better health observed in autumn compared to other seasons (<em>p</em> &lt; 0.01). Our findings suggest that including emerging contaminants and P-IBI as additional metrics can enhance the traditional WQI analysis in evaluating surface water's ecological health. These results highlight the need for a multidimensional assessment approach and call for improvements to LYR's ecological health, focusing on emerging contaminants and biodiversity rather than solely on reducing conventional indicators.</p></div>","PeriodicalId":34434,"journal":{"name":"Environmental Science and Ecotechnology","volume":"21 ","pages":"Article 100423"},"PeriodicalIF":12.6,"publicationDate":"2024-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666498424000371/pdfft?md5=71500d96c1a838a39a4a75c1d01233ed&pid=1-s2.0-S2666498424000371-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140789594","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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":"Biochar-based composites for removing chlorinated organic pollutants: Applications, mechanisms, and perspectives","authors":"Qingqing Song ,&nbsp;Fanying Kong ,&nbsp;Bing-Feng Liu ,&nbsp;Xueting Song ,&nbsp;Hong-Yu Ren","doi":"10.1016/j.ese.2024.100420","DOIUrl":"10.1016/j.ese.2024.100420","url":null,"abstract":"<div><p>Chlorinated organic pollutants constitute a significant category of persistent organic pollutants due to their widespread presence in the environment, which is primarily attributed to the expansion of agricultural and industrial activities. These pollutants are characterized by their persistence, potent toxicity, and capability for long-range dispersion, emphasizing the importance of their eradication to mitigate environmental pollution. While conventional methods for removing chlorinated organic pollutants encompass advanced oxidation, catalytic oxidation, and bioremediation, the utilization of biochar has emerged as a prominent green and efficacious method in recent years. Here we review biochar's role in remediating typical chlorinated organics, including polychlorinated biphenyls (PCBs), triclosan (TCS), trichloroethene (TCE), tetrachloroethylene (PCE), organochlorine pesticides (OCPs), and chlorobenzenes (CBs). We focus on the impact of biochar material properties on the adsorption mechanisms of chlorinated organics. This review highlights the use of biochar as a sustainable and eco-friendly method for removing chlorinated organic pollutants, especially when combined with biological or chemical strategies. Biochar facilitates electron transfer efficiency between microorganisms, promoting the growth of dechlorinating bacteria and mitigating the toxicity of chlorinated organics through adsorption. Furthermore, biochar can activate processes such as advanced oxidation or nano zero-valent iron, generating free radicals to decompose chlorinated organic compounds. We observe a broader application of biochar and bioprocesses for treating chlorinated organic pollutants in soil, reducing environmental impacts. Conversely, for water-based pollutants, integrating biochar with chemical methods proved more effective, leading to superior purification results. This review contributes to the theoretical and practical application of biochar for removing environmental chlorinated organic pollutants.</p></div>","PeriodicalId":34434,"journal":{"name":"Environmental Science and Ecotechnology","volume":"21 ","pages":"Article 100420"},"PeriodicalIF":12.6,"publicationDate":"2024-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666498424000346/pdfft?md5=4fa753d162d645e74b728ba849d8fbc8&pid=1-s2.0-S2666498424000346-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140758131","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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":"Deep learning-based detection of indicator species for monitoring biodiversity in semi-natural grasslands","authors":"Deepak H. Basavegowda ,&nbsp;Inga Schleip ,&nbsp;Paul Mosebach ,&nbsp;Cornelia Weltzien","doi":"10.1016/j.ese.2024.100419","DOIUrl":"https://doi.org/10.1016/j.ese.2024.100419","url":null,"abstract":"<div><p>Deep learning (DL) has huge potential to provide valuable insights into biodiversity changes in species-rich agricultural ecosystems such as semi-natural grasslands, helping to prioritize and plan conservation efforts. However, DL has been underexplored in grassland conservation efforts, hindered by data scarcity, intricate ecosystem interactions, and limited economic incentives. Here, we developed a DL-based object-detection model to identify indicator species, a group of vascular plant species that serve as surrogates for biodiversity assessment in high nature value (HNV) grasslands. We selected indicator species <em>Armeria maritima, Campanula patula, Cirsium oleraceum,</em> and <em>Daucus carota</em>. To overcome the hurdle of limited data, we grew indicator plants under controlled greenhouse conditions, generating a sufficient dataset for DL model training. The model was initially trained on this greenhouse dataset. Then, smaller datasets derived from an experimental grassland plot and natural grasslands were added to the training to facilitate the transition from greenhouse to field conditions. Our optimized model achieved remarkable average precision (AP) on test datasets, with 98.6 AP₅₀ on greenhouse data, 98.2 AP₅₀ on experimental grassland data, and 96.5 AP₅₀ on semi-natural grassland data. Our findings highlight the innovative application of greenhouse-grown specimens for the in-situ identification of plants, bolstering biodiversity monitoring in grassland ecosystems. Furthermore, the study illuminates the promising role of DL techniques in conservation programs, particularly as a monitoring tool to support result-based agri-environment schemes.</p></div>","PeriodicalId":34434,"journal":{"name":"Environmental Science and Ecotechnology","volume":"21 ","pages":"Article 100419"},"PeriodicalIF":12.6,"publicationDate":"2024-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666498424000334/pdfft?md5=22845bfb8d365054e1e1168c6cbae9f7&pid=1-s2.0-S2666498424000334-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140647738","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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":"Ecological filter walls for efficient pollutant removal from urban surface water","authors":"Menglong Liao ,&nbsp;Ye Qiu ,&nbsp;Yan Tian ,&nbsp;Zeng Li ,&nbsp;Tongtong liu ,&nbsp;Xinlei Feng ,&nbsp;Guohong Liu ,&nbsp;Yujie Feng","doi":"10.1016/j.ese.2024.100418","DOIUrl":"10.1016/j.ese.2024.100418","url":null,"abstract":"<div><p>Urban surface water pollution poses significant threats to aquatic ecosystems and human health. Conventional nitrogen removal technologies used in urban surface water exhibit drawbacks such as high consumption of carbon sources, high sludge production, and focus on dissolved oxygen (DO) concentration while neglecting the impact of DO gradients. Here, we show an ecological filter walls (EFW) that removes pollutants from urban surface water. We utilized a polymer-based three-dimensional matrix to enhance water permeability, and emergent plants were integrated into the EFW to facilitate biofilm formation. We observed that varying aeration intensities within the EFW's aerobic zone resulted in distinct DO gradients, with an optimal DO control at 3.19 ± 0.2 mg L⁻¹ achieving superior nitrogen removal efficiencies. Specifically, the removal efficiencies of total organic carbon, total nitrogen, ammonia, and nitrate were 79.4%, 81.3%, 99.6%, and 79.1%, respectively. Microbial community analysis under a 3 mg L⁻¹ DO condition revealed a shift in microbial composition and abundance, with genera such as <em>Dechloromonas</em>, <em>Acinetobacter</em>, unclassified_f__Comamonadaceae, <em>SM</em>1<em>A</em>02 and <em>Pseudomonas</em> playing pivotal roles in carbon and nitrogen elimination. Notably, the EFW facilitated shortcut nitrification-denitrification processes, predominantly contributing to nitrogen removal. Considering low manufacturing cost, flexible application, small artificial trace, and good pollutant removal ability, EFW has promising potential as an innovative approach to urban surface water treatment.</p></div>","PeriodicalId":34434,"journal":{"name":"Environmental Science and Ecotechnology","volume":"21 ","pages":"Article 100418"},"PeriodicalIF":12.6,"publicationDate":"2024-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666498424000322/pdfft?md5=e75f43df3d21068cf23cb1dd55bac951&pid=1-s2.0-S2666498424000322-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140398950","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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":"Gut pathobiome mediates behavioral and developmental disorders in biotoxin-exposed amphibians","authors":"Qianqian Pan ,&nbsp;Tianxing Lv ,&nbsp;Haorong Xu ,&nbsp;Hongda Fang ,&nbsp;Meng Li ,&nbsp;Jiaping Zhu ,&nbsp;Yue Wang ,&nbsp;Xiaoyan Fan ,&nbsp;Ping Xu ,&nbsp;Xiuguo Wang ,&nbsp;Qiangwei Wang ,&nbsp;Haruna Matsumoto ,&nbsp;Mengcen Wang","doi":"10.1016/j.ese.2024.100415","DOIUrl":"10.1016/j.ese.2024.100415","url":null,"abstract":"<div><p>Emerging evidence suggests a link between alterations in the gut microbiome and adverse health outcomes in the hosts exposed to environmental pollutants. Yet, the causal relationships and underlying mechanisms remain largely undefined. Here we show that exposure to biotoxins can affect gut pathobiome assembly in amphibians, which in turn triggers the toxicity of exogenous pollutants. We used <em>Xenopus laevis</em> as a model in this study. Tadpoles exposed to tropolone demonstrated notable developmental impairments and increased locomotor activity, with a reduction in total length by 4.37%–22.48% and an increase in swimming speed by 49.96%–84.83%. <em>Fusobacterium</em> and <em>Cetobacterium</em> are predominant taxa in the gut pathobiome of tropolone-exposed tadpoles. The tropolone-induced developmental and behavioral disorders in the host were mediated by assembly of the gut pathobiome, leading to transcriptome reprogramming. This study not only advances our understanding of the intricate interactions between environmental pollutants, the gut pathobiome, and host health but also emphasizes the potential of the gut pathobiome in mediating the toxicological effects of environmental contaminants.</p></div>","PeriodicalId":34434,"journal":{"name":"Environmental Science and Ecotechnology","volume":"21 ","pages":"Article 100415"},"PeriodicalIF":12.6,"publicationDate":"2024-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666498424000292/pdfft?md5=ccd67366a751807b56159dbd629a711c&pid=1-s2.0-S2666498424000292-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140274280","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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":"Nonmetallic modified zero-valent iron for remediating halogenated organic compounds and heavy metals: A comprehensive review","authors":"Zimin Yan ,&nbsp;Jia Ouyang ,&nbsp;Bin Wu ,&nbsp;Chenchen Liu ,&nbsp;Hongcheng Wang ,&nbsp;Aijie Wang ,&nbsp;Zhiling Li","doi":"10.1016/j.ese.2024.100417","DOIUrl":"10.1016/j.ese.2024.100417","url":null,"abstract":"<div><p>Zero Valent Iron (ZVI), an ideal reductant treating persistent pollutants, is hampered by issues like corrosion, passivation, and suboptimal utilization. Recent advancements in nonmetallic modified ZVI (NM-ZVI) show promising potential in circumventing these challenges by modifying ZVI's surface and internal physicochemical properties. Despite its promise, a thorough synthesis of research advancements in this domain remains elusive. Here we review the innovative methodologies, regulatory principles, and reduction-centric mechanisms underpinning NM-ZVI's effectiveness against two prevalent persistent pollutants: halogenated organic compounds and heavy metals. We start by evaluating different nonmetallic modification techniques, such as liquid-phase reduction, mechanical ball milling, and pyrolysis, and their respective advantages. The discussion progresses towards a critical analysis of current strategies and mechanisms used for NM-ZVI to enhance its reactivity, electron selectivity, and electron utilization efficiency. This is achieved by optimizing the elemental compositions, content ratios, lattice constants, hydrophobicity, and conductivity. Furthermore, we propose novel approaches for augmenting NM-ZVI's capability to address complex pollution challenges. This review highlights NM-ZVI's potential as an alternative to remediate water environments contaminated with halogenated organic compounds or heavy metals, contributing to the broader discourse on green remediation technologies.</p></div>","PeriodicalId":34434,"journal":{"name":"Environmental Science and Ecotechnology","volume":"21 ","pages":"Article 100417"},"PeriodicalIF":12.6,"publicationDate":"2024-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666498424000310/pdfft?md5=b27dddca977e1053426d0a8ce1b91c0a&pid=1-s2.0-S2666498424000310-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140273382","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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":"Cobalt single-atom catalyst tailored ceramic membrane for selective removal of emerging organic contaminants","authors":"Jiaxuan Yang ,&nbsp;Jing Zhao ,&nbsp;Hesong Wang ,&nbsp;Yatao Liu ,&nbsp;Junwen Ding ,&nbsp;Tianyi Wang ,&nbsp;Jinlong Wang ,&nbsp;Han Zhang ,&nbsp;Langming Bai ,&nbsp;Heng Liang","doi":"10.1016/j.ese.2024.100416","DOIUrl":"10.1016/j.ese.2024.100416","url":null,"abstract":"<div><p>Water reuse is an effective way to solve the issues of current wastewater increments and water resource scarcity. Ultrafiltration, a promising method for water reuse, has the characteristics of low energy consumption, easy operation, and high adaptability to coupling with other water treatment processes. However, emerging organic contaminants (EOCs) in municipal wastewater cannot be effectively intercepted by ultrafiltration, which poses significant challenges to the effluent quality and sustainability of ultrafiltration process. Here, we develop a cobalt single-atom catalyst-tailored ceramic membrane (Co₁-NCNT-CM) in conjunction with an activated peroxymonosulfate (PMS) system, achieving excellent EOCs degradation and anti-fouling performance. An interfacial reaction mechanism effectively mitigates membrane fouling through a repulsive interaction with natural organic matter. The generation of singlet oxygen at the Co-N₃-C active sites through a catalytic pathway (PMS→PMS∗→OH∗→O∗→OO∗→¹O₂) exhibits selective oxidation of phenols and sulfonamides, achieving &gt;90% removal rates. Our findings elucidate a multi-layered functional architecture within the Co₁-NCNT-CM/PMS system, responsible for its superior performance in organic decontamination and membrane maintenance during secondary effluent treatment. It highlights the power of integrating Co₁-NCNT-CM/PMS systems in advanced wastewater treatment frameworks, specifically for targeted EOCs removal, heralding a new direction for sustainable water management.</p></div>","PeriodicalId":34434,"journal":{"name":"Environmental Science and Ecotechnology","volume":"21 ","pages":"Article 100416"},"PeriodicalIF":12.6,"publicationDate":"2024-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666498424000309/pdfft?md5=55cddcbb8ce1da56fba8af79b81dca4b&pid=1-s2.0-S2666498424000309-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140271153","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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":"Enhancing nitrogen removal in constructed wetlands: The role of influent substrate concentrations in integrated vertical-flow systems","authors":"Tongtong Liu ,&nbsp;Da Li ,&nbsp;Yan Tian ,&nbsp;Jiajie Zhou ,&nbsp;Ye Qiu ,&nbsp;Dongyi Li ,&nbsp;Guohong Liu ,&nbsp;Yujie Feng","doi":"10.1016/j.ese.2024.100411","DOIUrl":"https://doi.org/10.1016/j.ese.2024.100411","url":null,"abstract":"<div><p>Recent advancements in constructed wetlands (CWs) have highlighted the imperative of enhancing nitrogen (N) removal efficiency. However, the variability in influent substrate concentrations presents a challenge in optimizing N removal strategies due to its impact on removal efficiency and mechanisms. Here we show the interplay between influent substrate concentration and N removal processes within integrated vertical-flow constructed wetlands (IVFCWs), using wastewaters enriched with NO₃⁻-N and NH₄⁺-N at varying carbon to nitrogen (C/N) ratios (1, 3, and 6). In the NO₃⁻-N enriched systems, a positive correlation was observed between the C/N ratio and total nitrogen (TN) removal efficiency, which markedly increased from 13.46 ± 2.23% to 87.00 ± 2.37% as the C/N ratio escalated from 1 to 6. Conversely, in NH₄⁺-N enriched systems, TN removal efficiencies in the A-6 setup (33.69 ± 4.83%) were marginally 1.25 to 1.29 times higher than those in A-3 and A-1 systems, attributed to constraints in dissolved oxygen (DO) levels and alkalinity. Microbial community analysis and metabolic pathway assessment revealed that anaerobic denitrification, microbial N assimilation, and dissimilatory nitrate reduction to ammonium (DNRA) predominated in NO₃⁻-N systems with higher C/N ratios (C/N ≥ 3). In contrast, aerobic denitrification and microbial N assimilation were the primary pathways in NH₄⁺-N systems and low C/N NO₃⁻-N systems. A mass balance approach indicated denitrification and microbial N assimilation contributed 4.12–47.12% and 8.51–38.96% in NO₃⁻-N systems, respectively, and 0.55–17.35% and 7.83–33.55% in NH₄⁺-N systems to TN removal. To enhance N removal, strategies for NO₃⁻-N dominated systems should address carbon source limitations and electron competition between denitrification and DNRA processes, while NH₄⁺-N dominated systems require optimization of carbon utilization pathways, and ensuring adequate DO and alkalinity supply.</p></div>","PeriodicalId":34434,"journal":{"name":"Environmental Science and Ecotechnology","volume":"21 ","pages":"Article 100411"},"PeriodicalIF":12.6,"publicationDate":"2024-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666498424000255/pdfft?md5=2f1e9b9a567b5a15c78ccb35312d8faa&pid=1-s2.0-S2666498424000255-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140842848","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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":"In situ single iron atom doping on Bi2WO6 monolayers triggers efficient photo-fenton reaction","authors":"Wei Liu ,&nbsp;Peifang Wang ,&nbsp;Juan Chen ,&nbsp;Xin Gao ,&nbsp;Huinan Che ,&nbsp;Xiaozhi Su ,&nbsp;Bin Liu ,&nbsp;Yanhui Ao","doi":"10.1016/j.ese.2024.100414","DOIUrl":"https://doi.org/10.1016/j.ese.2024.100414","url":null,"abstract":"<div><p>Developing an efficient photocatalytic system for hydrogen peroxide (H₂O₂) activation in Fenton-like processes holds significant promise for advancing water purification technologies. However, challenges such as high carrier recombination rates, limited active sites, and suboptimal H₂O₂ activation efficiency impede optimal performance. Here we show that single-iron-atom dispersed Bi₂WO₆ monolayers (SIAD-BWOM), designed through a facile hydrothermal approach, can offer abundant active sites for H₂O₂ activation. The SIAD-BWOM catalyst demonstrates superior photo-Fenton degradation capabilities, particularly for the persistent pesticide dinotefuran (DNF), showcasing its potential in addressing recalcitrant organic pollutants. We reveal that the incorporation of iron atoms in place of tungsten within the electron-rich [WO₄]²⁻ layers significantly facilitates electron transfer processes and boosts the Fe(II)/Fe(III) cycle efficiency. Complementary experimental investigations and theoretical analyses further elucidate how the atomically dispersed iron induces lattice strain in the Bi₂WO₆ monolayer, thereby modulating the d-band center of iron to improve H₂O₂ adsorption and activation. Our research provides a practical framework for developing advanced photo-Fenton catalysts, which can be used to treat emerging and refractory organic pollutants more effectively.</p></div>","PeriodicalId":34434,"journal":{"name":"Environmental Science and Ecotechnology","volume":"20 ","pages":"Article 100414"},"PeriodicalIF":12.6,"publicationDate":"2024-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666498424000280/pdfft?md5=a1901490d979b42f5bae0ab9ae762938&pid=1-s2.0-S2666498424000280-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140537100","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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}