Chemosphere最新文献_第4页

Co-grown novel S-scheme tubular P-UCN/S-TCN homojunction mediates photocatalysis-PMS activation synergistic system for efficient degradation of antibiotic. 共同生长的新型 S 型管状 P-UCN/S-TCN 同质结介导光催化-PMS 激活协同系统，实现抗生素的高效降解。

Chemosphere Pub Date : 2024-11-11 DOI: 10.1016/j.chemosphere.2024.143731

Ting Wu, Zhifeng Liu, Binbin Shao, Yuan Pan, Qingyun He, Xiansheng Zhang, Lingfeng Zhou, Yunze Wang, Teng Li, Sheng Liu

{"title":"Co-grown novel S-scheme tubular P-UCN/S-TCN homojunction mediates photocatalysis-PMS activation synergistic system for efficient degradation of antibiotic.","authors":"Ting Wu, Zhifeng Liu, Binbin Shao, Yuan Pan, Qingyun He, Xiansheng Zhang, Lingfeng Zhou, Yunze Wang, Teng Li, Sheng Liu","doi":"10.1016/j.chemosphere.2024.143731","DOIUrl":"https://doi.org/10.1016/j.chemosphere.2024.143731","url":null,"abstract":"The low photogenerated carrier separation and transport ability of the photocatalyst are the main factors inhibiting the photocatalytic activity. The construction of composite photocatalysts can effectively improve the efficiency of photogenerated carriers. However, the problem of reduced photocatalyst stability and catalytic activity due to easy separation of unstable composite interfaces has not been well solved for a long time. Therefore, in this work, a co-growth strategy was put forward to thermally co-polymerize sulfur-containing tubular supramolecular precursors with urea in order to achieve the growth of porous g-C3N4 nanoparticles (P-UCN) on the sulfur-doped tubular g-C3N4 (S-TCN), thus to successfully prepare P-UCN/S-TCN homojunction photocatalysts with chemically bonded stable composite interfaces. Furthermore, a coupled photocatalytic-peroxymonosulfate (PMS) activation system was constructed to further promote the photogenerated carrier separation of P-UCN/S-TCN as well as the catalytic activity of the reaction system through the electron donor-acceptor relationship between P-UCN/S-TCN and PMS. Experimental characterization and DFT theoretical calculations together revealed the band gap structural characteristics and the direction of electron flow of the P-UCN/S-TCN S-scheme homojunction, and confirmed the successful construction of a stable chemically bonded homojunction interface. Then the results of catalytic activity test of P-UCN1/S-TCN1 showed a high tetracycline hydrochloride (TCH) degradation efficiency (93.5%) within 30 min, and also demonstrated 100% degradation efficiency for Rhodamine B (RhB). This work made important progress in the design of a novel stable S-scheme homojunction interface and provided a reference for the application of photocatalysis-PMS coupling system in environmental remediation.","PeriodicalId":93933,"journal":{"name":"Chemosphere","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142634121","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

Use of ²H-labeled nanoplastics to study their accumulation and toxicity in Daphnia magna. 使用 2H 标记的纳米塑料研究其在大型蚤体内的积累和毒性。

Chemosphere Pub Date : 2024-11-11 DOI: 10.1016/j.chemosphere.2024.143658

Roxane Danquigny, Bruno Grassl, Séverine Le Faucheur, Javier Jiménez-Lamana, Marc Metian, Stéphanie Reynaud

{"title":"Use of 2H-labeled nanoplastics to study their accumulation and toxicity in Daphnia magna.","authors":"Roxane Danquigny, Bruno Grassl, Séverine Le Faucheur, Javier Jiménez-Lamana, Marc Metian, Stéphanie Reynaud","doi":"10.1016/j.chemosphere.2024.143658","DOIUrl":"https://doi.org/10.1016/j.chemosphere.2024.143658","url":null,"abstract":"Understanding the interactions between nanoplastics (NP) and biota is essential for risk assessment. However, NP quantification in complex matrices remains a challenge, especially when they are not labeled. Most labeling strategies consists in adding another compound (fluorophore, metal, lanthanide…) to the polymer, which can alter the NP properties and poses a risk of leaching phenomena. In the present study, we synthesized spherical and monodisperse 2H-labeling NP (129 nm) with carboxyl groups at their surface (8.7 nm-2) using surfactant-free polymerization. A pyrolysis coupled with gas chromatography/mass spectrometry method was developed to enable their quantification (limit of detection = 7.4 ng), without extensive sample preparation or significant matrix effects. The 2H-labeled NP were then used to study their toxicity and accumulation in the planktonic crustaceans Daphnia magna (D. magna). Daphnids were exposed for 48 hours to the deuterated NP at different concentrations, including environmentally realistic ones (from 0.03 to 36 mg kg-1). Little to no acute toxicity were observed in this range of concentration. During the experiment, adsorption on polycarbonate well walls was observed, suggesting that the NP concentration during exposure experiments with organisms should be monitored to take into account possible loss. The NP accumulation (mainly in the digestive tract) increased with the exposure concentration, tending to a plateau at higher concentrations. The depuration was also investigated and was significantly higher (97 % against 59 % in average) when the daphnids have access to algae, which highlight the need to add food in D. magna depuration studies to study the NP fate in these organisms. The present study demonstrated the advantages of stable isotope-labeled NP to better understand the processes controlling NP accumulation and impacts on aquatic biota.","PeriodicalId":93933,"journal":{"name":"Chemosphere","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142634425","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

Phytotoxicity of HNTs to rice (Oryza sativa L.): Effects on rice growth and development. HNTs 对水稻（Oryza sativa L.）的植物毒性：对水稻生长和发育的影响

Chemosphere Pub Date : 2024-11-11 DOI: 10.1016/j.chemosphere.2024.143735

Jiawei Huang, Ming Huang, ZiYing Guan, Linhong Chen, Jie Chen, Lihua Lv, Mingxian Liu

{"title":"Phytotoxicity of HNTs to rice (Oryza sativa L.): Effects on rice growth and development.","authors":"Jiawei Huang, Ming Huang, ZiYing Guan, Linhong Chen, Jie Chen, Lihua Lv, Mingxian Liu","doi":"10.1016/j.chemosphere.2024.143735","DOIUrl":"https://doi.org/10.1016/j.chemosphere.2024.143735","url":null,"abstract":"The phytotoxicity of halloysite nanotubes (HNTs) to rice (Oryza sativa L.) was evaluated at several stages from germination, seedling growth to spike setting, and the seedling stage was selected to study the effect of HNTs on the growth of rice. Rice was cultured using different concentrations of HNTs dispersions and a blank control group was cultured with deionized water. It was found that HNTs did not affect the germination of rice seeds, and at the seedling stage, the low concentration of HNTs dispersion (0.1 mg·mL-1) promoted the growth of rice. This significantly increased the biomass and root system of rice seedlings and also promoted the development of stems and leaves of rice seedlings. However, high concentration of HNTs dispersion (100 mg·mL-1) had an inhibitory effect on rice growth, resulting in a significant decrease in rice biomass, causing oxidative damage (increase in H2O2 content and malondialdehyde content, and disruption of cell membrane permeability), and causing a decrease in chlorophyll content in rice. The rice seedlings treated with HNTs were transplanted into the soil, and it was found that all the rice could grow healthily. The growth trend was consistent with the seedling stage, and all groups of rice were able to produce spikes, which indicated that the effect of HNTs on rice was slight. In total, this work displayed the toxicity of HNTs to rice, which lays the foundation for the application of HNTs in agricultural field.","PeriodicalId":93933,"journal":{"name":"Chemosphere","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142634365","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

State of the Science and Regulatory Acceptability for PFAS Residual Management Options: PFAS Disposal or Destruction Options. 全氟辛烷磺酸残留物管理方案的科学现状和法规可接受性：PFAS 处置或销毁方案。

Chemosphere Pub Date : 2024-11-10 DOI: 10.1016/j.chemosphere.2024.143726

Mahsa Modiri, Pavankumar Challa Sasi, Kyle A Thompson, Linda Lee, Katie Marjanovic, Graeme Hystad, Huoston Marsh, Kamruzzaman Khan, John Norton

{"title":"State of the Science and Regulatory Acceptability for PFAS Residual Management Options: PFAS Disposal or Destruction Options.","authors":"Mahsa Modiri, Pavankumar Challa Sasi, Kyle A Thompson, Linda Lee, Katie Marjanovic, Graeme Hystad, Huoston Marsh, Kamruzzaman Khan, John Norton","doi":"10.1016/j.chemosphere.2024.143726","DOIUrl":"https://doi.org/10.1016/j.chemosphere.2024.143726","url":null,"abstract":"This systematic review covers the urgent challenges posed by per- and polyfluoroalkyl substances (PFAS) in managing residuals from municipal, industrial, and waste treatment sources. It covers regulatory considerations, treatment technologies, residual management strategies, and critical conclusions and recommendations. A rigorous methodology was employed, utilizing scientific search engines and a wide array of peer-reviewed journal articles, technical reports, and regulatory guidance, to ensure the inclusion of the most relevant and up-to-date information on PFAS management of impacted residuals. The increasing public and regulatory focus underscores the persistence and environmental impact of PFAS. Emerging technologies for removing and sequestrating PFAS from environmental media are evaluated, and innovative destruction methods for addressing the residual media and the concentrated waste streams generated from such treatment processes are reviewed. Additionally, the evolving regulatory landscape in the United States is summarized and insights into the complexities of PFAS in residual management are discussed. Overall, this systematic review serves as a vital resource to inform stakeholders, guide research, and facilitate responsible PFAS management, emphasizing the pressing need for effective residual management solutions amidst evolving regulations and persistent environmental threats.","PeriodicalId":93933,"journal":{"name":"Chemosphere","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142634382","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

In vitro evaluation of interactions between cylindrospermopsin and water contaminants, arsenic and cadmium, in two human immune cell lines. 在两种人类免疫细胞系中对圆柱孢霉烯与水污染物砷和镉之间的相互作用进行体外评估。

Chemosphere Pub Date : 2024-11-10 DOI: 10.1016/j.chemosphere.2024.143727

Antonio Casas-Rodríguez, Tjaša Šentjurc, Leticia Diez-Quijada, Silvia Pichardo, Bojana Žegura, Angeles Jos, Ana María Cameán

{"title":"In vitro evaluation of interactions between cylindrospermopsin and water contaminants, arsenic and cadmium, in two human immune cell lines.","authors":"Antonio Casas-Rodríguez, Tjaša Šentjurc, Leticia Diez-Quijada, Silvia Pichardo, Bojana Žegura, Angeles Jos, Ana María Cameán","doi":"10.1016/j.chemosphere.2024.143727","DOIUrl":"https://doi.org/10.1016/j.chemosphere.2024.143727","url":null,"abstract":"Cylindrospermopsin (CYN), a cyanotoxin with worldwide distribution, is gaining increased attention due to its bioaccumulation potential and toxicological effects. Previous research suggests that CYN may interact with other environmental contaminants, potentially amplifying its toxicity. To address this concern, the present study investigated the combined effects of CYN with arsenic (As) and cadmium (Cd) on human immune cell lines, Jurkat and THP-1. Cytotoxicity tests showed that As and Cd significantly decreased the viability of both cell lines after 24 and 48 h of exposure. The EC50 (24 h) values for Jurkat cells were 13.15 ± 1.97 (As) and 36.92 ± 3.77μM (Cd), respectively, while for THP-1, the EC50 (24 h) values were 46.48 ± 0.17 for As and 55.09 ± 4.98μM for Cd. Furthermore, individual contaminants and their mixtures with CYN impaired monocyte differentiation into macrophages. The effect on mRNA expression of some cytokines (TNF-α, INF-γ, IL-2, IL-6 and IL-8) was also assessed. In the Jurkat cell line, As upregulated IL-8 expression while Cd increased the expression of all interleukins. Exposure to binary combinations (CYN + As, and CYN + Cd) increased IL-2 and INF-γ expression. In THP-1 cells, As elevated IL-8 and INF-γ expression, whereas Cd caused an increase in TNF-α and INF-γ expression. Exposure to CYN + As up-regulated IL-8 and INF-γ expression, while the CYN + Cd combination down-regulated TNF-α expression. These findings highlight the complex interactions between contaminants, emphasizing the need for evaluating combined effects in risk assessments.","PeriodicalId":93933,"journal":{"name":"Chemosphere","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142634388","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

Characterization of Potentially toxic elements in Leachates from active and closed landfills in Nigeria and their effects on groundwater systems using spatial, indexical, chemometric and Health risk techniques. 利用空间、指数、化学计量和健康风险技术确定尼日利亚在用和已关闭垃圾填埋场渗滤液中潜在有毒元素的特征及其对地下水系统的影响。

Chemosphere Pub Date : 2024-11-09 DOI: 10.1016/j.chemosphere.2024.143678

Toheeb Lekan Jolaosho

{"title":"Characterization of Potentially toxic elements in Leachates from active and closed landfills in Nigeria and their effects on groundwater systems using spatial, indexical, chemometric and Health risk techniques.","authors":"Toheeb Lekan Jolaosho","doi":"10.1016/j.chemosphere.2024.143678","DOIUrl":"https://doi.org/10.1016/j.chemosphere.2024.143678","url":null,"abstract":"This study examines potentially toxic elements (PTEs) in leachates from three landfills (active and closed sites) to quantify and compare their degree of toxicity and percolation effects on aquifer groundwater based on distance zonation. The finding revealed that the active landfill leachates had higher concentrations (P < 0.05) of PTEs, with EC, TDS, Cd, Cu, Fe, Zn, Pb, and Mn being above the standard limits for wastewater. The leachate pollution index confirmed high toxicity of the active sites. The geospatial maps suggest that the aquifer was influenced by leachate migration effects, with the groundwater situated within 100 m of the landfills exceeding the regulatory limits. Based on the Ficklin-Caboi assessment, the groundwaters were categorized into \"low metals-near neutral\" and \"high metals-near neutral.\" The contamination degree, heavy metal contamination index, groundwater quality index, and water pollution index denote that over 40% of the groundwaters are \"highly to extremely\" polluted and are unfit for drinking, while over 50% are \"excellently pure.\" The geospatial maps revealed that all the groundwaters within 100 m of the landfills are polluted, especially those near the active landfills. The prevailing factors impairing the quality of groundwater were Pb > Cd > TDS > Fe > EC > Cr > pH > Mn > Se > Co. The correlation coefficients, principal components, and cluster analyses confirmed the heterogeneous nature of the landfills and that the solid wastes were mainly from industrial, commercial, and household sources. Aside from the migration effect of leachates, other anthropogenic and geological factors are influencing the aquifer systems. The health risk assessment showed that the groundwaters within 100 to 500 m of the landfills are capable of causing noncarcinogenic and cancer health risks in exposed populations, with children and those within the distance of 100 m being the most vulnerable groups.","PeriodicalId":93933,"journal":{"name":"Chemosphere","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142633966","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

Iron separation from iron-rich manganese ore leachate: Comprehensive optimization of operating parameters and economic viability. 从富铁锰矿浸出液中分离铁：全面优化操作参数和经济可行性。

Chemosphere Pub Date : 2024-11-07 DOI: 10.1016/j.chemosphere.2024.143608

Zhisheng Zhao, Jiancheng Shu, Xiangfei Zeng, Mengjun Chen, Ling Hu, Zongyu Deng, Liang Ma, Shengjie Wang, Yong Yang, Hanke Wei

{"title":"Iron separation from iron-rich manganese ore leachate: Comprehensive optimization of operating parameters and economic viability.","authors":"Zhisheng Zhao, Jiancheng Shu, Xiangfei Zeng, Mengjun Chen, Ling Hu, Zongyu Deng, Liang Ma, Shengjie Wang, Yong Yang, Hanke Wei","doi":"10.1016/j.chemosphere.2024.143608","DOIUrl":"10.1016/j.chemosphere.2024.143608","url":null,"abstract":"In the current electrolytic manganese industry, iron separation and reuse from iron-rich manganese ore leachate (IRMOL) has become one of the most pressing challenges. This study aimed to investigate the optimal conditions for iron separation from IRMOL and to assess the economic and practical advantages of iron separation or removal in industrial manufacturing. To identify more cost-effective and technologically advanced production circumstances, we examined five key elements that weaken Fe(OH)3 colloidal production conditions in enterprises: reaction temperature, pH, crystal species, aging and reaction time. The screening results showed that when the conditions were optimized, the efficiency of reducing manganese loss decreased from 6.15% to 4.69%. Additionally, the generation of iron-rich electrolytic manganese residue (IREMR) was decreased by 44.32%, and the filtration velocity of IREMR increased from 0.0030 to 0.0220 mL/(s·cm2) compared to the production conditions before optimization at the enterprises. Through multiphase equilibria modeling with Visual MINTEQ, we have determined that raising the temperature and pH levels increases the expenses associated with chemicals and energy usage and results in an elevation of Fe(OH)2+ concentration. This can lead to the creation of Fe(OH)3 colloidal, causing a high water content in IREMR, inefficient filtration, and significant loss of manganese. This strategy is highly significant for the production of electrolytic manganese and the reduction of electrolytic manganese residue.","PeriodicalId":93933,"journal":{"name":"Chemosphere","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142559737","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

Uranium adsorption by iron modified zeolite and zeolite composite membranes. 铁改性沸石和沸石复合膜对铀的吸附。

Chemosphere Pub Date : 2024-11-07 DOI: 10.1016/j.chemosphere.2024.143711

Akhil Gopalakrishnan, Stephen Asare, Francis Adu-Boahene, Andrea I Schäfer

{"title":"Uranium adsorption by iron modified zeolite and zeolite composite membranes.","authors":"Akhil Gopalakrishnan, Stephen Asare, Francis Adu-Boahene, Andrea I Schäfer","doi":"10.1016/j.chemosphere.2024.143711","DOIUrl":"https://doi.org/10.1016/j.chemosphere.2024.143711","url":null,"abstract":"Composite membranes incorporated with high-performance adsorbents are promising for uranium removal. The impact of speciation and ionic strength on uranium adsorption by zeolites was investigated in both static adsorption and composite membrane filtration. Zeolites with high Si/Al ratios exhibited the highest uranium adsorption capacity. Iron-modified zeolite, BEA-Fe30 completely removed uranium at a concentration of 0.6 g/L in static adsorption, with uranium uptake ranging from 125 to 130 μg/g at pH values between 6 and 12. At lower pH values, uptake decreased, dropping to 3 μg/g at pH 2. The increased uranium uptake between pH 6 and 12 is attributed to the formation of a ternary complex involving U(VI), carbonate, and Fe oxide surface (hydr)oxo sites. High ionic strength did not impact the adsorption of uranium. Additionally, PHREEQC modeling was employed to simulate uranium speciation and adsorption behavior under varying pH and ionic strength conditions, further validating experimental findings. Zeolite-loaded microfiltration/ultrafiltration (MF/UF) membranes achieved the WHO guideline of 30 μg/L uranium in the permeate, using less zeolite compared to static adsorption. With 0.25 g of zeolite, the MF/UF process achieved a uranium uptake of 699 μg/g, significantly higher than the 256 μg/g observed in static adsorption. However, uranium removal decreased with increased flow rates, suggesting mass transfer limitations during filtration. The study highlights the potential of composite membranes with high-performance zeolites for efficient uranium removal, contributing to advancements in water purification technologies and addressing environmental contamination.","PeriodicalId":93933,"journal":{"name":"Chemosphere","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142634421","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

Exposure of Bromus hordeaceus to fossil and plant-based micro- and nanoplastics: Impacts and plant-plastic interactions vary depending on polymer type and growth phase. Bromus hordeaceus 接触化石和植物基微塑料和纳米塑料的情况：影响以及植物与塑料之间的相互作用因聚合物类型和生长阶段而异。

Chemosphere Pub Date : 2024-11-07 DOI: 10.1016/j.chemosphere.2024.143715

Inés María Alonso-Crespo, Alicia Mateos-Cárdenas

{"title":"Exposure of Bromus hordeaceus to fossil and plant-based micro- and nanoplastics: Impacts and plant-plastic interactions vary depending on polymer type and growth phase.","authors":"Inés María Alonso-Crespo, Alicia Mateos-Cárdenas","doi":"10.1016/j.chemosphere.2024.143715","DOIUrl":"https://doi.org/10.1016/j.chemosphere.2024.143715","url":null,"abstract":"Plastic pollution, especially pollution by micro- and nanoplastics, is now considered a potential threat to all ecosystems, including terrestrial ecosystems such as grassland habitats. This study investigated the impacts of micro- and nano-sized plastics on Bromus hordeaceus, a common grass species in European grasslands. The micro and nanoparticles were fossil-based polyethylene (PE) or plant-based polybutylene adipate terephthalate (PBAT), and these two plastics were used at two different concentrations. Here, we report data on plant development and plastic-plant interactions from two different experiments, (1) an in vitro experiment to test seed germination and establishment and (2) a soil experiment to test plant development and plastic-plant interactions specifically investigated as a form of perforation. Results from the in vitro experiment indicate that while seed germination success was unaffected by plastic type, the presence of all plastic particle types acted as a stimulant, increasing the total length of radicles and sprouts of germinated seeds. Conversely, results from the soil experiment showed that the growth of Bromus hordeaceus was negatively affected by the presence of microPBAT in the soil during the pot assay. Microscopic analysis confirmed that seed and plant structures interacted with all plastic particles via adsorption or perforation. This study demonstrates for the first time the ability of roots to penetrate plastics, especially microPBAT particles. Overall, our study concludes that both fossil-based and plant-based micro- and nano-plastics can influence plant growth, with effects varying based on plastic type, concentration, and plant growth phase. Further research is crucial to fully understand the intricate interactions between microplastics, soil properties, and plant development.","PeriodicalId":93933,"journal":{"name":"Chemosphere","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142634063","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

Stormwater treatment in constrained urban spaces through a hybrid Sequential Sedimentation Biofiltration System. 通过混合循序沉淀生物过滤系统处理受限城市空间的雨水。

Chemosphere Pub Date : 2024-11-07 DOI: 10.1016/j.chemosphere.2024.143696

P Jarosiewicz, A Font-Najera, J Mankiewicz-Boczek, A Chamerska, S Amalfitano, S Fazi, T Jurczak

{"title":"Stormwater treatment in constrained urban spaces through a hybrid Sequential Sedimentation Biofiltration System.","authors":"P Jarosiewicz, A Font-Najera, J Mankiewicz-Boczek, A Chamerska, S Amalfitano, S Fazi, T Jurczak","doi":"10.1016/j.chemosphere.2024.143696","DOIUrl":"https://doi.org/10.1016/j.chemosphere.2024.143696","url":null,"abstract":"Urban areas face increasing pressures on water resources, necessitating innovative approaches to climate adaptation and water quality management. Nature-based Solutions (NbS) offer a sustainable pathway, yet their integration with existing infrastructure in urban settings remains occasional. This study presents a novel hybrid system-Sequential Sedimentation Biofiltration System (SSBS)-designed for stormwater treatment within confined urban spaces. The system was adjusted to the existing stormwater infrastructure by integrating a sedimentation tank (SED), three Permeable Reactive Barriers (PRBs), and a biofiltration zone (BIO). The SSBS was evaluated for its efficiency in removing nutrients and sediments, focusing on the performance of PRBs. Our findings showed limited sediment removal in SED and PRBs due to spatial constraints and a high Hydraulic Loading Rate (HLR = 1.31 m/d), achieving an average of 13.6% Total Suspended Solids (TSS) removal. However, PRBs demonstrated effective removal of ammonium (43.4%) and phosphate (59.3%), potentially due to sorption and biofilm activity, with dominant microbial communities including Proteobacteria, Bacteroidetes, and nutrient-transforming taxa such as Nitrospirae. Interestingly, PRBs increased nitrite levels (57.1%) but did not significantly impact nitrate, chloride, or TSS. The BIO zone further enhanced nutrient retention (56% PO4-P) and served as a sink for TSS (52%). This study underscores the potential for integrating traditional urban infrastructure with NbS in a sequential stormwater treatment system, demonstrating its effectiveness in space-constrained urban environments.","PeriodicalId":93933,"journal":{"name":"Chemosphere","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142607765","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