Environmental Nanotechnology, Monitoring and Management最新文献_第6页

Adsorption of ciprofloxacin on sugarcane bagasse modified with carbon nanotubes: Influence of parameters and sorption mechanism 用碳纳米管修饰的甘蔗渣对环丙沙星的吸附：参数和吸附机理的影响

Q1 Environmental Science

Environmental Nanotechnology, Monitoring and Management

Pub Date : 2024-10-16 DOI: 10.1016/j.enmm.2024.101014

Marlon Castillo , Eulalia Vanegas , Christian Cruzat , Néstor Novoa , Ramón Arrué

The increasing occurrence of emergent pollutants in water bodies, such as ciprofloxacin (CIP), underscores the interest in the study of remediation processes. In this context, adsorption emerges as a widely utilized method, employing both economically viable biowaste and highly efficient specialized materials as adsorbents. The main objective of this research was to prepare a composite from sugarcane bagasse (SB) and carbon nanotubes to study its applicability as an adsorbent in the removal of CIP. The composite was prepared by ultrasonic dispersion of alkalinized sugarcane bagasse fibers and oxidized carbon nanotubes. The uptake of CIP was tested by a series of batch experiments with parameter variations. Surface properties were characterized by using SEM, FTIR, and XRD analysis. The composite had a pH_PZC = 6.46 with a proportion of active acid sites of 61.67 % and a phenolic groups predominance. The addition of oxidized carbon nanotubes increased the sorption capacity up to 20 % compared with SB. The study revealed enhanced sorption in the slightly acidic zone at pH values close to pH_PZC. Indeed, mechanisms favorable to sorption were π-π interaction and low CIP solubility. Process kinetics followed pseudo the second order and Weber and Morris models. Finally, experimental data seemed to fit the Langmuir model with a maximum adsorption capacity (q_m) of 16.835 mg·g⁻¹ at 30 °C, without disregarding the Freundlich mechanism since the regression factor R² is similar for both.

水体中出现越来越多的新污染物，如环丙沙星（CIP），凸显了人们对修复过程研究的兴趣。在这种情况下，吸附成为一种广泛使用的方法，既可以使用经济上可行的生物废料，也可以使用高效的特殊材料作为吸附剂。本研究的主要目的是用甘蔗渣（SB）和碳纳米管制备一种复合材料，研究其作为吸附剂去除 CIP 的适用性。该复合材料是通过超声波分散碱化甘蔗渣纤维和氧化碳纳米管制备的。通过一系列参数变化的批量实验测试了对 CIP 的吸收。利用扫描电镜、傅立叶变换红外光谱和 XRD 分析对其表面特性进行了表征。复合材料的 pHPZC = 6.46，活性酸位点比例为 61.67%，酚类基团占主导地位。与 SB 相比，氧化碳纳米管的加入使吸附能力提高了 20%。研究表明，在 pH 值接近 pHPZC 时，微酸性区域的吸附能力增强。事实上，有利于吸附的机制是 π-π 相互作用和低 CIP 溶解度。过程动力学遵循伪二阶模型和韦伯与莫里斯模型。最后，实验数据似乎与 Langmuir 模型相吻合，在 30 °C 时的最大吸附容量（qm）为 16.835 mg-g-1，但不排除 Freundlich 机制，因为两者的回归系数 R2 相似。

{"title":"Adsorption of ciprofloxacin on sugarcane bagasse modified with carbon nanotubes: Influence of parameters and sorption mechanism","authors":"Marlon Castillo , Eulalia Vanegas , Christian Cruzat , Néstor Novoa , Ramón Arrué","doi":"10.1016/j.enmm.2024.101014","DOIUrl":"10.1016/j.enmm.2024.101014","url":null,"abstract":"<div><div>The increasing occurrence of emergent pollutants in water bodies, such as ciprofloxacin (CIP), underscores the interest in the study of remediation processes. In this context, adsorption emerges as a widely utilized method, employing both economically viable biowaste and highly efficient specialized materials as adsorbents. The main objective of this research was to prepare a composite from sugarcane bagasse (SB) and carbon nanotubes to study its applicability as an adsorbent in the removal of CIP. The composite was prepared by ultrasonic dispersion of alkalinized sugarcane bagasse fibers and oxidized carbon nanotubes. The uptake of CIP was tested by a series of batch experiments with parameter variations. Surface properties were characterized by using SEM, FTIR, and XRD analysis. The composite had a pH<sub>PZC</sub> = 6.46 with a proportion of active acid sites of 61.67 % and a phenolic groups predominance. The addition of oxidized carbon nanotubes increased the sorption capacity up to 20 % compared with SB. The study revealed enhanced sorption in the slightly acidic zone at pH values close to pH<sub>PZC</sub>. Indeed, mechanisms favorable to sorption were π-π interaction and low CIP solubility. Process kinetics followed pseudo the second order and Weber and Morris models. Finally, experimental data seemed to fit the Langmuir model with a maximum adsorption capacity (q<sub>m</sub>) of 16.835 mg·g<sup>−1</sup> at 30 °C, without disregarding the Freundlich mechanism since the regression factor R<sup>2</sup> is similar for both.</div></div>","PeriodicalId":11716,"journal":{"name":"Environmental Nanotechnology, Monitoring and Management","volume":"22 ","pages":"Article 101014"},"PeriodicalIF":0.0,"publicationDate":"2024-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142529713","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}

引用次数: 0

Bismuth chalcogenide assisted Nanomaterials: A versatile platform against harmful bacteria and toxic organic moieties 卤化铋辅助纳米材料：对抗有害细菌和有毒有机分子的多功能平台

Q1 Environmental Science

Environmental Nanotechnology, Monitoring and Management

Pub Date : 2024-09-29 DOI: 10.1016/j.enmm.2024.101010

Jyoti Rai , Mukesh Kumar Verma , Munish Sharma , Raj Kumar

Water pollution caused by toxic organic compounds (Dyes, agrochemicals, antibiotics, etc.) and waterborne bacteria presents significant global challenges that demand innovative solutions. Nanomaterials have emerged as a promising alternative to traditional water treatment methods due to their unique properties, such as antimicrobial and photocatalytic activities, as well as superior adsorption capabilities. Among these, bismuth chalcogenides (Bi₂S₃, Bi₂O₃, Bi₂Se₃) have attracted considerable interest for their low toxicity, suitable band gaps in the visible spectrum, and potent antimicrobial properties. This review examines the significant role of bismuth chalcogenide-based single and multiphase nanostructures in addressing water pollution through photocatalytic degradation, adsorption, and antimicrobial processes. Despite excellent photocatalytic activity of single phase bismuth chalcogenides nanomaterials, it also enhances visible light absorption capacity of UV active materials (TiO₂, ZnO etc.) in combine state. It delves into the antimicrobial mechanisms of bismuth chalcogenides and explores their enhanced efficacy when combined with loaded drugs, natural bioactive compounds, and doped metals such as silver (Ag) and gold (Au). The review also provides an in-depth discussion on the challenges associated with synthesizing bismuth chalcogenide nanomaterials and their potential applications in water purification.

有毒有机化合物（染料、农用化学品、抗生素等）和水传播细菌造成的水污染是全球性的重大挑战，需要创新的解决方案。纳米材料因其独特的性能，如抗菌和光催化活性，以及卓越的吸附能力，已成为传统水处理方法的一种有前途的替代品。其中，铬化铋（Bi2S3、Bi2O3、Bi2Se3）因其毒性低、在可见光谱中具有合适的带隙以及强大的抗菌性能而引起了人们的极大兴趣。本综述探讨了基于铬化铋的单相和多相纳米结构在通过光催化降解、吸附和抗菌过程解决水污染问题方面的重要作用。尽管单相铬化铋纳米材料具有出色的光催化活性，但它也能增强紫外线活性材料（TiO2、ZnO 等）在结合态下的可见光吸收能力。综述深入探讨了铬化铋的抗菌机制，并探讨了它们与负载药物、天然生物活性化合物以及掺杂金属（如银（Ag）和金（Au））结合后的增强功效。综述还深入探讨了与合成铬化铋纳米材料相关的挑战及其在水净化领域的潜在应用。

{"title":"Bismuth chalcogenide assisted Nanomaterials: A versatile platform against harmful bacteria and toxic organic moieties","authors":"Jyoti Rai , Mukesh Kumar Verma , Munish Sharma , Raj Kumar","doi":"10.1016/j.enmm.2024.101010","DOIUrl":"10.1016/j.enmm.2024.101010","url":null,"abstract":"<div><div>Water pollution caused by toxic organic compounds (Dyes, agrochemicals, antibiotics, etc.) and waterborne bacteria presents significant global challenges that demand innovative solutions. Nanomaterials have emerged as a promising alternative to traditional water treatment methods due to their unique properties, such as antimicrobial and photocatalytic activities, as well as superior adsorption capabilities. Among these, bismuth chalcogenides (Bi<sub>2</sub>S<sub>3</sub>, Bi<sub>2</sub>O<sub>3</sub>, Bi<sub>2</sub>Se<sub>3</sub>) have attracted considerable interest for their low toxicity, suitable band gaps in the visible spectrum, and potent antimicrobial properties. This review examines the significant role of bismuth chalcogenide-based single and multiphase nanostructures in addressing water pollution through photocatalytic degradation, adsorption, and antimicrobial processes. Despite excellent photocatalytic activity of single phase bismuth chalcogenides nanomaterials, it also enhances visible light absorption capacity of UV active materials (TiO<sub>2</sub>, ZnO etc.) in combine state. It delves into the antimicrobial mechanisms of bismuth chalcogenides and explores their enhanced efficacy when combined with loaded drugs, natural bioactive compounds, and doped metals such as silver (Ag) and gold (Au). The review also provides an in-depth discussion on the challenges associated with synthesizing bismuth chalcogenide nanomaterials and their potential applications in water purification.</div></div>","PeriodicalId":11716,"journal":{"name":"Environmental Nanotechnology, Monitoring and Management","volume":"22 ","pages":"Article 101010"},"PeriodicalIF":0.0,"publicationDate":"2024-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142428153","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}

引用次数: 0

Valorization of Vaccinium corymbosum waste from the extraction of bioactive compounds: Nanoparticles synthesis and applications 从提取生物活性化合物中实现越橘废弃物的价值：纳米颗粒的合成与应用

Q1 Environmental Science

Environmental Nanotechnology, Monitoring and Management

Pub Date : 2024-09-29 DOI: 10.1016/j.enmm.2024.101011

Cristina Espinoza-Tongo , David Asmat-Campos , Heber Robles-Castillo , Noemi Raquel-Checca

This study presents the biogenic synthesis of silver nanoparticles (Ag NPs), zinc oxide nanoparticles (ZnO NPs), and iron oxide nanoparticles (FeO NPs) using V. corymbosum extracts as a reducing agent, varying the ultrasound extraction times (t1 = 20 min, t2 = 15 min, t3 = 10 min). Ag NPs exhibited an antimicrobial efficiency of 98.2 %, being most effective with t2 due to their smaller size. ZnO NPs demonstrated the best thermal stability with t1, and FeO NPs showed optimal magnetic properties with t3. The reduction of methylene blue by ZnO and FeO NPs was significant, with ZnO-t1 and FeO-t3 standing out. The nanoparticles exhibited distinctive optical characteristics and adequate morphology, depending on the extraction time. This work highlights the feasibility of using natural extracts to synthesize nanoparticles, promoting sustainable methods in nanoscience and nanotechnology. Future research should focus on the functionalization of NPs to expand their applications.

本研究以V. corymbosum提取物为还原剂，改变超声提取时间（t1 = 20分钟，t2 = 15分钟，t3 = 10分钟），生物合成了银纳米粒子（Ag NPs）、氧化锌纳米粒子（ZnO NPs）和氧化铁纳米粒子（FeO NPs）。Ag NPs 的抗菌效率为 98.2%，由于其尺寸较小，在 t2 时效果最好。ZnO NPs 在 t1 条件下表现出最佳的热稳定性，而 FeO NPs 在 t3 条件下表现出最佳的磁性。ZnO 和 FeO 纳米粒子对亚甲基蓝的还原效果显著，其中 ZnO-t1 和 FeO-t3 尤为突出。根据萃取时间的不同，纳米粒子表现出独特的光学特性和适当的形态。这项工作凸显了利用天然提取物合成纳米粒子的可行性，促进了纳米科学和纳米技术的可持续发展。未来的研究应侧重于纳米粒子的功能化，以扩大其应用范围。

{"title":"Valorization of Vaccinium corymbosum waste from the extraction of bioactive compounds: Nanoparticles synthesis and applications","authors":"Cristina Espinoza-Tongo , David Asmat-Campos , Heber Robles-Castillo , Noemi Raquel-Checca","doi":"10.1016/j.enmm.2024.101011","DOIUrl":"10.1016/j.enmm.2024.101011","url":null,"abstract":"<div><div>This study presents the biogenic synthesis of silver nanoparticles (Ag NPs), zinc oxide nanoparticles (ZnO NPs), and iron oxide nanoparticles (FeO NPs) using <em>V. corymbosum</em> extracts as a reducing agent, varying the ultrasound extraction times (t1 = 20 min, t2 = 15 min, t3 = 10 min). Ag NPs exhibited an antimicrobial efficiency of 98.2 %, being most effective with t2 due to their smaller size. ZnO NPs demonstrated the best thermal stability with t1, and FeO NPs showed optimal magnetic properties with t3. The reduction of methylene blue by ZnO and FeO NPs was significant, with ZnO-t1 and FeO-t3 standing out. The nanoparticles exhibited distinctive optical characteristics and adequate morphology, depending on the extraction time. This work highlights the feasibility of using natural extracts to synthesize nanoparticles, promoting sustainable methods in nanoscience and nanotechnology. Future research should focus on the functionalization of NPs to expand their applications.</div></div>","PeriodicalId":11716,"journal":{"name":"Environmental Nanotechnology, Monitoring and Management","volume":"22 ","pages":"Article 101011"},"PeriodicalIF":0.0,"publicationDate":"2024-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142428143","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}

引用次数: 0

Algae as a source of bionanofactory for the synthesis of ecofriendly nanoparticles 藻类作为合成生态友好型纳米颗粒的仿生工厂来源

Q1 Environmental Science

Environmental Nanotechnology, Monitoring and Management

Pub Date : 2024-09-28 DOI: 10.1016/j.enmm.2024.101012

K. Riazunnisa , C. Madhuri , A. Swarna Latha , N. Rajesh , Habeeb Khadri , T. Chandrasekhar , V. Anu Prasanna , M. Subhosh Chandra

Nanoparticle synthesis using biological systems has become increasingly popular because of its simplicity, cost effectiveness, and eco-friendliness. Nanoparticles have unique properties and are hence being increasingly explored for various applications, including medicine, cosmetics, agriculture, and bioremediation. In particular, the use of algae for the production of nanoparticles has recently drawn increased amounts of attention because of the possible advantages of this process over conventional methods. The current review aims to document, update, and uncover all the details pertaining to algal nanoparticle synthesis, characterization and applications. Algae have substantial economic value for large-scale manufacturing of various components. It has been used to synthesize a variety of nanoparticles, such as iron, zinc, copper, gold, and silver. Several algal metal and metal oxide nanoparticles have been shown to exhibit anticancer, antibacterial, antifungal, antibiofilm, antiplasmodial, antioxidant, and catalytic properties. Although there has been some success in obtaining nanoparticle production from algal species, there are still some unexplored facts that need to be uncovered to improve production. Therefore, this article reviews the recent advances in synthesizing and characterizing nanoparticles from algae and their potential applications.

利用生物系统合成纳米粒子因其简单、成本效益高和生态友好而越来越受欢迎。纳米粒子具有独特的性质，因此在医药、化妆品、农业和生物修复等各种应用领域的探索日益增多。特别是，由于利用藻类生产纳米粒子的工艺可能比传统方法更具优势，因此最近引起了越来越多的关注。本综述旨在记录、更新和揭示有关藻类纳米粒子合成、表征和应用的所有细节。藻类在大规模制造各种成分方面具有巨大的经济价值。它已被用于合成各种纳米粒子，如铁、锌、铜、金和银。一些藻类金属和金属氧化物纳米粒子已被证明具有抗癌、抗菌、抗真菌、抗生物膜、抗原生质、抗氧化和催化等特性。尽管在利用藻类生产纳米粒子方面取得了一定的成功，但仍有一些尚未探索的事实需要揭示，以提高产量。因此，本文综述了从藻类中合成和表征纳米粒子的最新进展及其潜在应用。

{"title":"Algae as a source of bionanofactory for the synthesis of ecofriendly nanoparticles","authors":"K. Riazunnisa , C. Madhuri , A. Swarna Latha , N. Rajesh , Habeeb Khadri , T. Chandrasekhar , V. Anu Prasanna , M. Subhosh Chandra","doi":"10.1016/j.enmm.2024.101012","DOIUrl":"10.1016/j.enmm.2024.101012","url":null,"abstract":"<div><div>Nanoparticle synthesis using biological systems has become increasingly popular because of its simplicity, cost effectiveness, and eco-friendliness. Nanoparticles have unique properties and are hence being increasingly explored for various applications, including medicine, cosmetics, agriculture, and bioremediation. In particular, the use of algae for the production of nanoparticles has recently drawn increased amounts of attention because of the possible advantages of this process over conventional methods. The current review aims to document, update, and uncover all the details pertaining to algal nanoparticle synthesis, characterization and applications. Algae have substantial economic value for large-scale manufacturing of various components. It has been used to synthesize a variety of nanoparticles, such as iron, zinc, copper, gold, and silver. Several algal metal and metal oxide nanoparticles have been shown to exhibit anticancer, antibacterial, antifungal, antibiofilm, antiplasmodial, antioxidant, and catalytic properties. Although there has been some success in obtaining nanoparticle production from algal species, there are still some unexplored facts that need to be uncovered to improve production. Therefore, this article reviews the recent advances in synthesizing and characterizing nanoparticles from algae and their potential applications.</div></div>","PeriodicalId":11716,"journal":{"name":"Environmental Nanotechnology, Monitoring and Management","volume":"22 ","pages":"Article 101012"},"PeriodicalIF":0.0,"publicationDate":"2024-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142428144","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}

引用次数: 0

Microplastics in ecological system: Their prevalence, health effects, and remediation 生态系统中的微塑料：它们的普遍性、对健康的影响和补救措施

Q1 Environmental Science

Environmental Nanotechnology, Monitoring and Management

Pub Date : 2024-09-19 DOI: 10.1016/j.enmm.2024.101007

Aris Ismanto , Tony Hadibarata , Risky Ayu Kristanti , Muhammad Zainuri , Denny Nugroho Sugianto , Wulan Kusumastuti , Malya Asoka Anindita

Water is a fundamental component of human physiological processes, playing a crucial role in functions such as nutrient assimilation and metabolic activities. Furthermore, it plays a crucial role in guaranteeing a plentiful food supply for all organisms. In addition to its duty in providing nutrition, water serves as a home for many life forms and plays a vital part in establishing a conducive living environment. However, the introduction of plastic materials has led to the occurrence of microplastics (MPs) in aquatic environments, which has become a global issue that has attracted significant interest from both the scientific community and the general public. The increasing worldwide demand for plastics can be ascribed to its multifunctionality in commercial and industrial contexts, combined with its cost-effectiveness. Members of Parliament have been identified through multiple sources, including but not limited to cosmetic products, industrial wastes, and fishing operations. The primary aim of this research is to conduct a thorough examination of the consequences resulting from the widespread presence of MPs on both terrestrial and marine ecosystems, as well as the impact on human welfare. Therefore, it is crucial to develop efficient mitigation measures in order to remove MPs from water reservoirs, protect ecological integrity, and provide a safer environment for future generations. Furthermore, this work evaluates the benefits and limitations of utilized methodologies, elucidating the inherent difficulties in MPs research that require resolution in order to achieve a thorough comprehension of these particles. International collaboration plays a crucial role in efficiently resolving concerns related to marine pollutants, as they have the ability to disperse by wind and sea currents, leading to possible repercussions that are difficult to predict.

水是人体生理过程的基本组成部分，在营养同化和新陈代谢活动等功能中发挥着至关重要的作用。此外，水在保证所有生物的充足食物供应方面也发挥着至关重要的作用。除了提供营养之外，水还是许多生命形式的家园，在建立有利的生活环境方面发挥着至关重要的作用。然而，塑料材料的引入导致水生环境中出现了微塑料（MPs），这已成为一个全球性问题，引起了科学界和公众的极大关注。全世界对塑料的需求日益增长，这是因为塑料在商业和工业领域具有多功能性，而且成本效益高。议员们已从多个来源发现了塑料，包括但不限于化妆品、工业废物和捕鱼作业。这项研究的主要目的是彻底检查议会成员的广泛存在对陆地和海洋生态系统造成的后果，以及对人类福祉的影响。因此，制定有效的缓解措施至关重要，以便清除水库中的 MPs，保护生态完整性，为子孙后代提供更安全的环境。此外，这项工作还评估了所使用方法的优势和局限性，阐明了 MPs 研究中需要解决的固有难题，以实现对这些颗粒的透彻理解。国际合作在有效解决与海洋污染物有关的问题方面发挥着至关重要的作用，因为海洋污染物有能力随风和海流扩散，导致难以预测的可能影响。

{"title":"Microplastics in ecological system: Their prevalence, health effects, and remediation","authors":"Aris Ismanto , Tony Hadibarata , Risky Ayu Kristanti , Muhammad Zainuri , Denny Nugroho Sugianto , Wulan Kusumastuti , Malya Asoka Anindita","doi":"10.1016/j.enmm.2024.101007","DOIUrl":"10.1016/j.enmm.2024.101007","url":null,"abstract":"<div><div>Water is a fundamental component of human physiological processes, playing a crucial role in functions such as nutrient assimilation and metabolic activities. Furthermore, it plays a crucial role in guaranteeing a plentiful food supply for all organisms. In addition to its duty in providing nutrition, water serves as a home for many life forms and plays a vital part in establishing a conducive living environment. However, the introduction of plastic materials has led to the occurrence of microplastics (MPs) in aquatic environments, which has become a global issue that has attracted significant interest from both the scientific community and the general public. The increasing worldwide demand for plastics can be ascribed to its multifunctionality in commercial and industrial contexts, combined with its cost-effectiveness. Members of Parliament have been identified through multiple sources, including but not limited to cosmetic products, industrial wastes, and fishing operations. The primary aim of this research is to conduct a thorough examination of the consequences resulting from the widespread presence of MPs on both terrestrial and marine ecosystems, as well as the impact on human welfare. Therefore, it is crucial to develop efficient mitigation measures in order to remove MPs from water reservoirs, protect ecological integrity, and provide a safer environment for future generations. Furthermore, this work evaluates the benefits and limitations of utilized methodologies, elucidating the inherent difficulties in MPs research that require resolution in order to achieve a thorough comprehension of these particles. International collaboration plays a crucial role in efficiently resolving concerns related to marine pollutants, as they have the ability to disperse by wind and sea currents, leading to possible repercussions that are difficult to predict.</div></div>","PeriodicalId":11716,"journal":{"name":"Environmental Nanotechnology, Monitoring and Management","volume":"22 ","pages":"Article 101007"},"PeriodicalIF":0.0,"publicationDate":"2024-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142428152","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}

引用次数: 0

Treatment of gaseous toluene in an anoxic hybrid bioreactor: Optimization using response surface methodology 在缺氧混合生物反应器中处理气态甲苯：利用响应面方法进行优化

Q1 Environmental Science

Environmental Nanotechnology, Monitoring and Management

Pub Date : 2024-09-19 DOI: 10.1016/j.enmm.2024.101006

Pallavi Chaudhary , Susant Kumar Padhi , Lopa Pattanaik

This study focuses on treating gaseous toluene emissions from chemical and petrochemical industries using an anoxic hybrid bioreactor (AnHBR) and optimizing the process using response surface methodology (RSM). By varying the gas flow rate (0.05–0.25 LPM) of toluene, the gas residence time (GRT) within the AnHBR ranged from 0.53 to 2.67 h, resulting in an inlet loading rate (ILR) between 0.36 to 14.33 g/m³ h. Simultaneously, the hydraulic retention time (HRT) of the liquid feed was varied from 24 to 72 h in the AnHBR. The operating parameters were varied to determine the optimal combination to achieve the maximum toluene removal, which remained above 96% throughout the operation. At the optimized combinations (flow rate: 0.15 LPM, GRT: 0.89 h, and HRT: 48 h) in AnHBR, toluene removal reached ∼99%, with end products generated consisting of 1.8% CO₂ and 92.9% N₂ gas. Metagenomics analysis revealed a dominance of toluene degraders (∼38%), highlighting their potential to degrade toluene in the AnHBR. The RSM enhanced toluene treatment in the AnHBR, demonstrating robustness in handling high pollutant loads and its potential for industrial applications.

本研究的重点是利用缺氧混合生物反应器（AnHBR）处理化工和石化工业排放的气态甲苯，并利用响应面方法（RSM）优化工艺。通过改变甲苯的气体流速（0.05-0.25 LPM），AnHBR 中的气体停留时间（GRT）从 0.53 到 2.67 h 不等，从而使入口装载率（ILR）从 0.36 到 14.33 g/m3 h 不等。通过改变操作参数来确定最佳组合，以实现最大的甲苯去除率，在整个操作过程中，甲苯去除率始终保持在 96% 以上。在 AnHBR 中的优化组合（流速：0.15 LPM，GRT：0.89 h，HRT：48 h）下，甲苯去除率达到 99%，生成的最终产品包括 1.8% 的 CO2 和 92.9% 的 N2 气体。元基因组学分析表明，甲苯降解剂占主导地位（38%），突出了它们在 AnHBR 中降解甲苯的潜力。RSM 增强了 AnHBR 中的甲苯处理能力，证明了其在处理高污染物负荷时的稳健性及其在工业应用中的潜力。

{"title":"Treatment of gaseous toluene in an anoxic hybrid bioreactor: Optimization using response surface methodology","authors":"Pallavi Chaudhary , Susant Kumar Padhi , Lopa Pattanaik","doi":"10.1016/j.enmm.2024.101006","DOIUrl":"10.1016/j.enmm.2024.101006","url":null,"abstract":"<div><div>This study focuses on treating gaseous toluene emissions from chemical and petrochemical industries using an anoxic hybrid bioreactor (AnHBR) and optimizing the process using response surface methodology (RSM). By varying the gas flow rate (0.05–0.25 LPM) of toluene, the gas residence time (GRT) within the AnHBR ranged from 0.53 to 2.67 h, resulting in an inlet loading rate (ILR) between 0.36 to 14.33 g/m<sup>3</sup> h. Simultaneously, the hydraulic retention time (HRT) of the liquid feed was varied from 24 to 72 h in the AnHBR. The operating parameters were varied to determine the optimal combination to achieve the maximum toluene removal, which remained above 96% throughout the operation. At the optimized combinations (flow rate: 0.15 LPM, GRT: 0.89 h, and HRT: 48 h) in AnHBR, toluene removal reached ∼99%, with end products generated consisting of 1.8% CO<sub>2</sub> and 92.9% N<sub>2</sub> gas. Metagenomics analysis revealed a dominance of toluene degraders (∼38%), highlighting their potential to degrade toluene in the AnHBR. The RSM enhanced toluene treatment in the AnHBR, demonstrating robustness in handling high pollutant loads and its potential for industrial applications.</div></div>","PeriodicalId":11716,"journal":{"name":"Environmental Nanotechnology, Monitoring and Management","volume":"22 ","pages":"Article 101006"},"PeriodicalIF":0.0,"publicationDate":"2024-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142318885","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}

引用次数: 0

Green biosynthesis of Ag-doped hetero-metallic oxide nanocomposite for efficient sunlight-driven photo-adsorptive degradation of carcinogenic naphthalene and phenanthrene 绿色生物合成掺银杂质金属氧化物纳米复合材料，用于在阳光驱动下高效光吸附降解致癌物质萘和菲

Q1 Environmental Science

Environmental Nanotechnology, Monitoring and Management

Pub Date : 2024-09-19 DOI: 10.1016/j.enmm.2024.101008

Sudha Choudhary , Manviri Rani , Uma Shanker

One of the most significant issues facing the world today is environmental contamination due to the polycyclic aromatic hydrocarbons, or PAHs release of reactive chemicals into the environment. Here, a green technology was used to synthesis the Ag doped Bi₂O₃@Co₃O₄ nanocomposite utilizing an extract from Azadirachta indica leaves. The morphological and structural examination of Ag doped Co₃O₄@Bi₂O₃ revealed an image in the form of a hollow spherical or flake adsorbed on a Ag surface with an increase surface area. New peaks in the FT-IR spectra of Ag–O and Co–O–Bi at 678 cm⁻¹ and 1130 cm⁻¹, respectively, show the coupling of Ag. Following this, under various reaction conditions (pollutant: 10–30 mg/L; catalyst: 10–30 mg; pH: 3–11, dark sunlight) the doped nanocomposite was assessed for the efficient removal of NAP and PHE. Ag doped Co₃O₄@Bi₂O₃ displayed maximum degradation of NAP (96 %) and PHE (94 %) at 10 mg/L conc. of each PAH with a 25 mg catalytic dose at neutral pH in the presence of direct sunlight. First-order kinetics followed by initial Langmuir adsorption constituted the degradation process. Predominant reactive species and safer metabolite formation in the photocatalysis process of PAHs were studied by scavenger and GC–MS analysis. The green nano photocatalyst that was created demonstrated excellent stability, sensitivity, and reusability (up to 8th cycles) during the degrading process, which likely qualified it for use in industrial uses.

当今世界面临的最重要问题之一是由于多环芳烃（PAHs）向环境释放活性化学物质而造成的环境污染。在此，我们采用一种绿色技术，利用 Azadirachta indica 叶子的提取物合成了 Ag 掺杂 Bi2O3@Co3O4 纳米复合材料。通过对掺银 Co3O4@Bi2O3 的形态和结构进行检测，发现其在银表面形成了中空球状或片状吸附图像，且比表面积增大。在 Ag-O 和 Co-O-Bi 的傅立叶变换红外光谱中，分别在 678 cm-1 和 1130 cm-1 处出现了新的峰值，表明了 Ag 的耦合作用。随后，在不同的反应条件下（污染物：10-30 毫克/升；催化剂：10-30 毫克；pH 值：3-11，暗光），对掺杂纳米复合材料高效去除 NAP 和 PHE 的效果进行了评估。掺银 Co3O4@Bi2O3 在中性 pH 值、阳光直射的条件下，当每种多环芳烃的浓度为 10 毫克/升、催化剂剂量为 25 毫克时，NAP（96%）和 PHE（94%）的降解率最高。降解过程为一阶动力学，然后是初始朗缪尔吸附。通过清除剂和气相色谱-质谱分析，研究了多环芳烃光催化过程中的主要反应物和更安全代谢物的形成。所制备的绿色纳米光催化剂在降解过程中表现出卓越的稳定性、灵敏度和可重复使用性（最多可循环使用 8 次），这使其有资格用于工业用途。

{"title":"Green biosynthesis of Ag-doped hetero-metallic oxide nanocomposite for efficient sunlight-driven photo-adsorptive degradation of carcinogenic naphthalene and phenanthrene","authors":"Sudha Choudhary , Manviri Rani , Uma Shanker","doi":"10.1016/j.enmm.2024.101008","DOIUrl":"10.1016/j.enmm.2024.101008","url":null,"abstract":"<div><div>One of the most significant issues facing the world today is environmental contamination due to the polycyclic aromatic hydrocarbons, or PAHs release of reactive chemicals into the environment. Here, a green technology was used to synthesis the Ag doped Bi<sub>2</sub>O<sub>3</sub>@Co<sub>3</sub>O<sub>4</sub> nanocomposite utilizing an extract from Azadirachta indica leaves. The morphological and structural examination of Ag doped Co<sub>3</sub>O<sub>4</sub>@Bi<sub>2</sub>O<sub>3</sub> revealed an image in the form of a hollow spherical or flake adsorbed on a Ag surface with an increase surface area. New peaks in the FT-IR spectra of Ag–O and Co–O–Bi at 678 cm<sup>−1</sup> and 1130 cm<sup>−1</sup>, respectively, show the coupling of Ag. Following this, under various reaction conditions (pollutant: 10–30 mg/L; catalyst: 10–30 mg; pH: 3–11, dark sunlight) the doped nanocomposite was assessed for the efficient removal of NAP and PHE. Ag doped Co<sub>3</sub>O<sub>4</sub>@Bi<sub>2</sub>O<sub>3</sub> displayed maximum degradation of NAP (96 %) and PHE (94 %) at 10 mg/L conc. of each PAH with a 25 mg catalytic dose at neutral pH in the presence of direct sunlight. First-order kinetics followed by initial Langmuir adsorption constituted the degradation process. Predominant reactive species and safer metabolite formation in the photocatalysis process of PAHs were studied by scavenger and GC–MS analysis. The green nano photocatalyst that was created demonstrated excellent stability, sensitivity, and reusability (up to 8th cycles) during the degrading process, which likely qualified it for use in industrial uses.</div></div>","PeriodicalId":11716,"journal":{"name":"Environmental Nanotechnology, Monitoring and Management","volume":"22 ","pages":"Article 101008"},"PeriodicalIF":0.0,"publicationDate":"2024-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142312914","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}

引用次数: 0

Preparation of low-cost metal-loaded adsorbent using post-consumer waste plastics: Experimental and modelling studies 利用消费后废塑料制备低成本金属吸附剂：实验和模型研究

Q1 Environmental Science

Environmental Nanotechnology, Monitoring and Management

Pub Date : 2024-09-18 DOI: 10.1016/j.enmm.2024.101009

Sreeja Sarkar, Naba Kumar Mondal

Fluoride contamination in drinking water is a world-wide problem which causes dangerous irreversible diseases called fluorosis. The present study highlighted the efficacy of metals (Al and Zn) impregnated thermally degraded products of polyethylene terephthalate (PET) towards the removal of fluoride from the solution. Synthesized metal impregnated carbonaceous materials was characterised by pHzpc, proximate analysis, SEM, EDX and FTIR studies. A batch adsorption study with operating variables such as initial concentration, pH, adsorbent dose, contact time, temperature and agitation speed were undertaken. Then an optimization study was performed through Response Surface Methodology (RSM). The results revealed that the adsorption isotherm and kinetics followed Langmuir Isotherm model (R² = 0.968) and pseudo-second order kinetics (R² = 0.995), respectively with adsorption capacity 6.793 mg/g. The thermodynamics of fluoride adsorption reveal that the adsorption was spontaneous and endothermic in nature. The RSM results demonstrated the optimization of operating parameters such as initial concentration (9.95 mg/L), adsorbent dose (0.01 g/50 mL), contact time (11.42 min) and temperature (331 K). The result from perturbation plot indicate that the most influential parameters are initial concentration followed by temperature and adsorbent dose and the least influential parameter is contact time. Finally, it can be concluded that waste PET plastics could be a valuable adsorbent for decontamination of pollutants from aqueous medium.

饮用水中的氟污染是一个世界性的问题，它会导致不可逆转的危险疾病--氟中毒。本研究强调了浸渍聚对苯二甲酸乙二酯（PET）热降解产物的金属（铝和锌）从溶液中去除氟化物的功效。通过 pHzpc、近似分析、扫描电镜、EDX 和傅立叶变换红外光谱研究对合成的金属浸渍碳质材料进行了表征。对初始浓度、pH 值、吸附剂剂量、接触时间、温度和搅拌速度等操作变量进行了批量吸附研究。然后通过响应面法（RSM）进行了优化研究。结果表明，吸附等温线和动力学分别遵循 Langmuir 等温线模型（R2 = 0.968）和假二阶动力学（R2 = 0.995），吸附容量为 6.793 mg/g。氟化物吸附热力学表明，吸附是自发的，具有内热性质。RSM 结果表明，对初始浓度（9.95 毫克/升）、吸附剂剂量（0.01 克/50 毫升）、接触时间（11.42 分钟）和温度（331 K）等操作参数进行了优化。扰动图结果表明，影响最大的参数是初始浓度，其次是温度和吸附剂剂量，影响最小的参数是接触时间。最后，可以得出结论：废 PET 塑料可以作为一种有价值的吸附剂来净化水介质中的污染物。

{"title":"Preparation of low-cost metal-loaded adsorbent using post-consumer waste plastics: Experimental and modelling studies","authors":"Sreeja Sarkar, Naba Kumar Mondal","doi":"10.1016/j.enmm.2024.101009","DOIUrl":"10.1016/j.enmm.2024.101009","url":null,"abstract":"<div><div>Fluoride contamination in drinking water is a world-wide problem which causes dangerous irreversible diseases called fluorosis. The present study highlighted the efficacy of metals (Al and Zn) impregnated thermally degraded products of polyethylene terephthalate (PET) towards the removal of fluoride from the solution. Synthesized metal impregnated carbonaceous materials was characterised by pHzpc, proximate analysis, SEM, EDX and FTIR studies. A batch adsorption study with operating variables such as initial concentration, pH, adsorbent dose, contact time, temperature and agitation speed were undertaken. Then an optimization study was performed through Response Surface Methodology (RSM). The results revealed that the adsorption isotherm and kinetics followed Langmuir Isotherm model (R<sup>2</sup> = 0.968) and pseudo-second order kinetics (R<sup>2</sup> = 0.995), respectively with adsorption capacity 6.793 mg/g. The thermodynamics of fluoride adsorption reveal that the adsorption was spontaneous and endothermic in nature. The RSM results demonstrated the optimization of operating parameters such as initial concentration (9.95 mg/L), adsorbent dose (0.01 g/50 mL), contact time (11.42 min) and temperature (331 K). The result from perturbation plot indicate that the most influential parameters are initial concentration followed by temperature and adsorbent dose and the least influential parameter is contact time. Finally, it can be concluded that waste PET plastics could be a valuable adsorbent for decontamination of pollutants from aqueous medium.</div></div>","PeriodicalId":11716,"journal":{"name":"Environmental Nanotechnology, Monitoring and Management","volume":"22 ","pages":"Article 101009"},"PeriodicalIF":0.0,"publicationDate":"2024-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142324079","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}

引用次数: 0

Absorption of commercial and nanoparticulate ZnO and MgO synthesized by combustion reaction applied to maize soil 应用于玉米土壤的商品和通过燃烧反应合成的纳米微粒氧化锌和氧化镁的吸收率

Q1 Environmental Science

Environmental Nanotechnology, Monitoring and Management

Pub Date : 2024-09-13 DOI: 10.1016/j.enmm.2024.101005

T.E.P. Alves , A.G.A. Diniz , G.M.V.V. Safadi , C.M. Silva-Neto

Nanotechnology has rapidly expanded across various fields, yet its application in agriculture remains underexplored. This study investigates the impact of zinc oxide (ZnO) and magnesium oxide (MgO) nanoparticles on maize cultivation, comparing commercial samples with those synthesized by combustion reaction. Synthesized ZnO and ZnO/MgO (1:1 by mass) were characterized using X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), and transmission electron microscopy (TEM) to determine particle size and morphology. The experimental design assessed the effects of different treatments on magnesium and zinc uptake in maize roots and leaves, using atomic absorption spectrometry (AAS) for analysis. Results indicate that commercial ZnO significantly increased Zn absorption compared to synthesized samples and the control group, highlighting the influence of particle size and surface area on nutrient uptake. This study provides valuable insights into the potential of nanomaterials into the plant’s absorption mechanism as well as show that the availability of Zn NP synthesized contributes to the absorption of zinc by the plant without competing with Mg. On the other hand, when in Zn commercial, Mg absorption may be impaired.

纳米技术已在各个领域迅速发展，但其在农业中的应用仍未得到充分探索。本研究比较了商用样品和通过燃烧反应合成的样品，研究了氧化锌（ZnO）和氧化镁（MgO）纳米颗粒对玉米栽培的影响。使用 X 射线衍射 (XRD)、傅立叶变换红外光谱 (FTIR) 和透射电子显微镜 (TEM) 对合成的氧化锌和氧化锌/氧化镁（质量比为 1:1）进行表征，以确定粒度和形态。实验设计采用原子吸收光谱分析法（AAS）评估了不同处理对玉米根和叶镁和锌吸收的影响。结果表明，与合成样品和对照组相比，商用氧化锌能显著提高锌的吸收率，突出了颗粒大小和表面积对养分吸收的影响。这项研究为了解纳米材料在植物吸收机制中的潜力提供了有价值的见解，并表明合成的锌氧化物有助于植物对锌的吸收，而不会与镁发生竞争。另一方面，在锌商业化的情况下，镁的吸收可能会受到影响。

{"title":"Absorption of commercial and nanoparticulate ZnO and MgO synthesized by combustion reaction applied to maize soil","authors":"T.E.P. Alves , A.G.A. Diniz , G.M.V.V. Safadi , C.M. Silva-Neto","doi":"10.1016/j.enmm.2024.101005","DOIUrl":"10.1016/j.enmm.2024.101005","url":null,"abstract":"<div><p>Nanotechnology has rapidly expanded across various fields, yet its application in agriculture remains underexplored. This study investigates the impact of zinc oxide (ZnO) and magnesium oxide (MgO) nanoparticles on maize cultivation, comparing commercial samples with those synthesized by combustion reaction. Synthesized ZnO and ZnO/MgO (1:1 by mass) were characterized using X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), and transmission electron microscopy (TEM) to determine particle size and morphology. The experimental design assessed the effects of different treatments on magnesium and zinc uptake in maize roots and leaves, using atomic absorption spectrometry (AAS) for analysis. Results indicate that commercial ZnO significantly increased Zn absorption compared to synthesized samples and the control group, highlighting the influence of particle size and surface area on nutrient uptake. This study provides valuable insights into the potential of nanomaterials into the plant’s absorption mechanism as well as show that the availability of Zn NP synthesized contributes to the absorption of zinc by the plant without competing with Mg. On the other hand, when in Zn commercial, Mg absorption may be impaired.</p></div>","PeriodicalId":11716,"journal":{"name":"Environmental Nanotechnology, Monitoring and Management","volume":"22 ","pages":"Article 101005"},"PeriodicalIF":0.0,"publicationDate":"2024-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142239955","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}

引用次数: 0

A critical review of occurrence, sources, fate, ecological risk, and health effect of emerging contaminants in water and wastewater 对水和废水中新出现的污染物的发生、来源、归宿、生态风险和健康影响的严格审查

Q1 Environmental Science

Environmental Nanotechnology, Monitoring and Management

Pub Date : 2024-09-11 DOI: 10.1016/j.enmm.2024.100994

Gurudatta Singh, Anubhuti Singh, Virendra Kumar Mishra

Emerging contaminants (ECs) are a diverse group of chemicals that have recently been identified as potential threats to human health and the environment. ECs are typically found at low concentrations (ng/L to ug/L) in water and wastewater, but they can bioaccumulate and biomagnified in the food chain, posing a risk to aquatic life and humans. Sources of these contaminants are diverse, with pharmaceuticals and personal care products entering the environment through human excretion, while industrial chemicals and pesticides are introduced through manufacturing processes and agricultural runoff. Wastewater treatment plants (WWTPs) are often unable to remove ECs effectively so that they can increase in surface water, groundwater, and drinking water. The fate of ECs in the environment is complex. It depends on various factors, including the chemical properties of the EC, the environmental conditions, and the presence of other chemicals. ECs can be transported long distances in water and persist in the environment for years or even decades.

Developing countries like India have limited information about most of the ECs. The ecological risks of ECs are not fully understood, but there is growing concern that they can have a negative impact on aquatic life and human health. Furthermore, the EC has undergone a detailed risk assessment examination, and the risk quotient (RQ) for different aquatic species with respect to corresponding contaminants is also calculated. Results imply that Paracetamol and Bisphenol-A have high RQ values for algae, fish and daphnia. Algae have shown substantially greater resilience to the action of ECs among the selected aquatic species.

新出现的污染物（ECs）是最近被确认为对人类健康和环境具有潜在威胁的一类化学品。ECs在水和废水中的浓度通常很低（纳克/升至微克/升），但它们可以在食物链中进行生物累积和生物放大，从而对水生生物和人类构成风险。这些污染物的来源多种多样，药品和个人护理产品通过人类排泄物进入环境，而工业化学品和杀虫剂则通过生产过程和农业径流进入环境。污水处理厂通常无法有效去除氨基甲酸乙酯，因此地表水、地下水和饮用水中的氨基甲酸乙酯含量会增加。氨基甲酸乙酯在环境中的去向十分复杂。这取决于多种因素，包括氨基甲酸乙酯的化学性质、环境条件和其他化学物质的存在。氨基甲酸乙酯可随水远距离迁移，并在环境中存留数年甚至数十年。人们尚未完全了解氨基甲酸乙酯的生态风险，但越来越担心它们会对水生生物和人类健康造成负面影响。此外，还对氨基甲酸乙酯进行了详细的风险评估检查，并计算了相应污染物对不同水生物种的风险商数。结果表明，扑热息痛和双酚 A 对藻类、鱼类和水蚤的 RQ 值较高。在选定的水生物种中，藻类对氨基甲酸乙酯作用的复原力更强。

{"title":"A critical review of occurrence, sources, fate, ecological risk, and health effect of emerging contaminants in water and wastewater","authors":"Gurudatta Singh, Anubhuti Singh, Virendra Kumar Mishra","doi":"10.1016/j.enmm.2024.100994","DOIUrl":"10.1016/j.enmm.2024.100994","url":null,"abstract":"<div><p>Emerging contaminants (ECs) are a diverse group of chemicals that have recently been identified as potential threats to human health and the environment. ECs are typically found at low concentrations (ng/L to ug/L) in water and wastewater, but they can bioaccumulate and biomagnified in the food chain, posing a risk to aquatic life and humans. Sources of these contaminants are diverse, with pharmaceuticals and personal care products entering the environment through human excretion, while industrial chemicals and pesticides are introduced through manufacturing processes and agricultural runoff. Wastewater treatment plants (WWTPs) are often unable to remove ECs effectively so that they can increase in surface water, groundwater, and drinking water. The fate of ECs in the environment is complex. It depends on various factors, including the chemical properties of the EC, the environmental conditions, and the presence of other chemicals. ECs can be transported long distances in water and persist in the environment for years or even decades.</p><p>Developing countries like India have limited information about most of the ECs. The ecological risks of ECs are not fully understood, but there is growing concern that they can have a negative impact on aquatic life and human health. Furthermore, the EC has undergone a detailed risk assessment examination, and the risk quotient (RQ) for different aquatic species with respect to corresponding contaminants is also calculated. Results imply that Paracetamol and Bisphenol-A have high RQ values for algae, fish and daphnia. Algae have shown substantially greater resilience to the action of ECs among the selected aquatic species.</p></div>","PeriodicalId":11716,"journal":{"name":"Environmental Nanotechnology, Monitoring and Management","volume":"22 ","pages":"Article 100994"},"PeriodicalIF":0.0,"publicationDate":"2024-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142239954","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}

引用次数: 0