Journal of hazardous materials letters最新文献_第6页

Aerobic biodegradation of chlorinated ethenes by Pseudonocardia sp. D17: Biodegradation ability without auxiliary substrates and concurrent biodegradation with 1,4-dioxane D17 假心皮藻对氯化烯烃的好氧生物降解：无辅助底物生物降解能力以及与 1,4-二恶烷同时进行的生物降解

Journal of hazardous materials letters Pub Date : 2024-11-01 Epub Date: 2024-03-09 DOI: 10.1016/j.hazl.2024.100106

Daisuke Inoue, Ryugo Nishimine, Shinpei Fujiwara, Kousuke Minamizono, Michihiko Ike

{"title":"Aerobic biodegradation of chlorinated ethenes by Pseudonocardia sp. D17: Biodegradation ability without auxiliary substrates and concurrent biodegradation with 1,4-dioxane","authors":"Daisuke Inoue, Ryugo Nishimine, Shinpei Fujiwara, Kousuke Minamizono, Michihiko Ike","doi":"10.1016/j.hazl.2024.100106","DOIUrl":"https://doi.org/10.1016/j.hazl.2024.100106","url":null,"abstract":"<div><p>Bioremediation is a promising approach for mitigating commingled contaminations of chlorinated ethenes (CEs) and 1,4-dioxane (DX). However, aerobic bioremediation to simultaneously remove CEs and DX remains challenging. This study aimed to explore the ability of <em>Pseudonocardia</em> sp. D17 (D17) to aerobically degrade CEs and its applicability for concurrent removal of CEs and DX. Aerobic degradation experiments of individual CEs revealed that D17 could degrade trichloroethene (TCE), three isomers of dichloroethene (DCE), and vinyl chloride (VC), and the trend of its degradation ability was <em>cis</em>-1,2-DCE (cDCE) > VC > TCE > <em>trans</em>-1,2-DCE > 1,1-DCE. Notably, the CE-degrading activity of D17 was expressed even without any auxiliary substrates. Further, when TCE, cDCE, or VC was co-present with DX (each at 1 mg/L), D17 could degrade both compounds without any significant inhibition (for TCE and cDCE) or with only a transient and reversible suspension of its DX degradation ability (for VC). These findings indicated that D17 is a promising agent for the aerobic bioremediation of CEs and DX co-contamination and provide novel insights into the future development of efficient aerobic bioremediation strategies.</p></div>","PeriodicalId":93463,"journal":{"name":"Journal of hazardous materials letters","volume":"5 ","pages":"Article 100106"},"PeriodicalIF":0.0,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666911024000054/pdfft?md5=2c3ed074cb9db915facd597302dc064c&pid=1-s2.0-S2666911024000054-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140113899","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

Perturbation of enzyme structure by nano-metal organic frameworks: A question mark on their safety-by-design? 纳米金属有机框架对酶结构的干扰：设计安全性的问号？

IF 6.6

Journal of hazardous materials letters Pub Date : 2024-11-01 Epub Date: 2024-09-20 DOI: 10.1016/j.hazl.2024.100127

Swaroop Chakraborty , Bashiru Ibrahim , Pankti Dhumal , Nathan Langford , Lauren Garbett , Eugenia Valsami-Jones

{"title":"Perturbation of enzyme structure by nano-metal organic frameworks: A question mark on their safety-by-design?","authors":"Swaroop Chakraborty , Bashiru Ibrahim , Pankti Dhumal , Nathan Langford , Lauren Garbett , Eugenia Valsami-Jones","doi":"10.1016/j.hazl.2024.100127","DOIUrl":"10.1016/j.hazl.2024.100127","url":null,"abstract":"<div><div>Our study investigates the interactions between nanoscale Metal-Organic Frameworks (nMOFs), specifically ZIF-8 and CuIm, and key enzymes: Acetylcholine Esterase (AChE), α-amylase. Using circular dichroism (CD) spectroscopy, we observed significant alterations in the secondary structures of these enzymes upon interaction with nMOFs. AChE showed a reduction in α-helix content from 20.1 % to a significantly lower value when exposed to 160 µg/mL of nMOFs, with a corresponding increase in β-sheet and other structural components. Enzymatic activity assays revealed that CuIm nMOFs decreased AChE activity by 67.08 % at the highest concentration tested (160 µg/mL). ZIF-8 also affected AChE activity significantly at this concentration. Similarly, α-amylase exhibited structural changes, with increasing concentrations of nMOFs leading to a near-total loss of secondary structure at 80 and 160 µg/mL. These structural changes were accompanied by a marked decrease in enzymatic activity, particularly with CuIm nMOFs showing the most substantial inhibitory effects. Our findings highlight the profound impact of nMOFs on enzyme structures and functions, emphasising the need for comprehensive assessments of nMOFs' potential toxicity and understanding the aspects of their safety-by-design.</div></div>","PeriodicalId":93463,"journal":{"name":"Journal of hazardous materials letters","volume":"5 ","pages":"Article 100127"},"PeriodicalIF":6.6,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666911024000261/pdfft?md5=a99dc6613db8094ea85d05ed5b2751e9&pid=1-s2.0-S2666911024000261-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142310292","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

Legacy and emerging per- and polyfluoroalkyl substances in tissue and toilet paper from China 中国纸巾和卫生纸中遗留的和新出现的全氟和多氟烷基物质

Journal of hazardous materials letters Pub Date : 2024-11-01 Epub Date: 2024-04-03 DOI: 10.1016/j.hazl.2024.100109

Nannan Wan , Yu Liu , Xinghui Zhang , Zhaoyang Liu , Qiyu Wang , Shuai Liu , Miao Zhang , Bixian Mai

{"title":"Legacy and emerging per- and polyfluoroalkyl substances in tissue and toilet paper from China","authors":"Nannan Wan , Yu Liu , Xinghui Zhang , Zhaoyang Liu , Qiyu Wang , Shuai Liu , Miao Zhang , Bixian Mai","doi":"10.1016/j.hazl.2024.100109","DOIUrl":"https://doi.org/10.1016/j.hazl.2024.100109","url":null,"abstract":"<div><p>Per- and polyfluoroalkyl substances (PFASs) have been found in toilet paper in Europe, the United States, and Africa; however, their presence in Chinese household paper has not been investigated. In this study, 21 legacy and 30 emerging PFASs were analyzed in tissue and toilet paper from China, including 48 samples of different origins and materials. Median concentrations of chlorinated polyfluorinated ether sulfonates (Cl-PFESAs), hexafluoropropylene oxide homologs (HFPOs), and <em>p</em>-perfluorous nonenoxybenzenesulfonate (OBS) were 0.32, 0.19, and 0.10 ng/g dry weight (dw), respectively. The detection frequencies (DFs) of Cl-PFESAs and OBS both were greater than 96%, followed by hexafluoropropylene oxide trimer acid (HFPO-TrA, DF: 85%). Notably, the level of HFPO-TrA in one sample was as high as 540 ng/g dw, indicating a potential environmental risk to humans. In addition, the concentrations of Cl-PFESAs in toilet paper were significantly higher than that in tissue (<em>p</em> < 0.05). However, no significant differences were observed in the concentrations of PFASs in tissue and toilet paper from different materials and origins. This suggests that PFASs, particularly emerging PFASs, are widely detected in tissue and toilet paper products across China, and their presence is a potential source of landfill contamination and human exposure.</p></div>","PeriodicalId":93463,"journal":{"name":"Journal of hazardous materials letters","volume":"5 ","pages":"Article 100109"},"PeriodicalIF":0.0,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S266691102400008X/pdfft?md5=c09cb73bcc04b9742f6bb2998617ca08&pid=1-s2.0-S266691102400008X-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140344709","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

Exploring the impact of organic and inorganic amendments, with foliar application of iron nanoparticles, on cadmium stabilization and growth of maize in wastewater irrigated-soil 探索有机和无机添加剂以及叶面喷施纳米铁颗粒对废水灌溉土壤中镉的稳定和玉米生长的影响

Journal of hazardous materials letters Pub Date : 2024-11-01 Epub Date: 2024-05-06 DOI: 10.1016/j.hazl.2024.100111

Sehar Razzaq , Beibei Zhou , Zakir Ullah , Muhammad Zia-ur-Rehman , Hongchao Guo , Muhammad Adil , Chen Xiaopeng , Li Wen Qian

{"title":"Exploring the impact of organic and inorganic amendments, with foliar application of iron nanoparticles, on cadmium stabilization and growth of maize in wastewater irrigated-soil","authors":"Sehar Razzaq , Beibei Zhou , Zakir Ullah , Muhammad Zia-ur-Rehman , Hongchao Guo , Muhammad Adil , Chen Xiaopeng , Li Wen Qian","doi":"10.1016/j.hazl.2024.100111","DOIUrl":"https://doi.org/10.1016/j.hazl.2024.100111","url":null,"abstract":"<div><h3>Objectives</h3><p>This study addresses the critical issue of Cd contamination in agricultural soils, posing substantial risks to crop productivity and food safety. While prior pot experiment has undertook this issue on a small scale, this study aims to evaluate the efficacy of selected best soil amendments, at a large-scale field experiment.</p></div><div><h3>Methodology</h3><p>Press mud and humic acid were applied at 0.5%, while gypsum and Fe<sub>2</sub>O<sub>3</sub> were applied at 5 mg/kg alone and with foliar application of Fe nanoparticles at 5 mg/L.</p></div><div><h3>Analysis</h3><p>Comparative analysis with control revealed the immobilization efficiency of all amendments in descending order of effectiveness as follows: 100, 102, 104, 104, 105, 102, 105, and 105% for PM, HA, GYP, Fe, PM + Fe Nps, HA + Fe Nps, GYP + Fe Nps, and Fe + Fe Nps. Additionally, reduced growth, photosynthetic activities, and elevated levels of malondialdehyde and hydrogen peroxide, indicative of oxidative damage in control plant.</p></div><div><h3>Findings</h3><p>Application of these amendments with foliar spraying of Fe Nps effectively mitigates Cd toxicity in maize crops, leading to improved growth, biomass, photosynthetic pigments, and antioxidant enzyme activities.</p></div><div><h3>Novelty/Improvement</h3><p>These findings highlight the significance of exploring innovative approach of combining different amendments with foliar application of nanoparticles to mitigate Cd contamination and enhance soil health, thereby contributing to global efforts in ensuring food safety and security.</p></div>","PeriodicalId":93463,"journal":{"name":"Journal of hazardous materials letters","volume":"5 ","pages":"Article 100111"},"PeriodicalIF":0.0,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666911024000108/pdfft?md5=5d79650156d4603b02b3ff305eef6926&pid=1-s2.0-S2666911024000108-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140880570","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

Hitchhikers on traveling microplastics: Three necessary steps for bacteria becoming dangerous invaders 微塑料旅行中的 "搭便车者"：细菌成为危险入侵者的三个必要步骤

IF 6.6

Journal of hazardous materials letters Pub Date : 2024-11-01 Epub Date: 2024-11-10 DOI: 10.1016/j.hazl.2024.100133

Xiaohan Zhang , Ying Zhang , Yongzheng Ma , Zhiguang Niu

{"title":"Hitchhikers on traveling microplastics: Three necessary steps for bacteria becoming dangerous invaders","authors":"Xiaohan Zhang , Ying Zhang , Yongzheng Ma , Zhiguang Niu","doi":"10.1016/j.hazl.2024.100133","DOIUrl":"10.1016/j.hazl.2024.100133","url":null,"abstract":"<div><div>Microplastics (MPs) have received great concern in recent years, and whether the bacteria carried by traveling MPs would cause ecological risks is a hot topic for debate. The colonized bacteria (i.e., hitchhikers) on traveling MPs which become invasive species in the new environment, need to be completed in three steps: arriving, falling, and growing. However, most previous studies only focused on the first step, which we think is insufficient to discuss species invasion. Thus, in this frontier review, we reviewed the progress of the current research on the uniqueness of bacterial communities on MPs, and we summarized that the uniqueness of the plastisphere was not as high as previously thought. Moreover, we explained why the three steps were necessary to complete the bacterial species invasion. Furthermore, we analyzed the technical difficulties hindering discussing MPs as invasive species carriers, as well as the perspectives in future research. Therefore, this frontier review presents new insights into the role of MPs as bacterial carriers, and suggests study directions for future research.</div></div>","PeriodicalId":93463,"journal":{"name":"Journal of hazardous materials letters","volume":"5 ","pages":"Article 100133"},"PeriodicalIF":6.6,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142651888","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

Understanding arsenic toxicity: Implications for environmental exposure and human health 了解砷毒性:对环境暴露和人类健康的影响

Journal of hazardous materials letters Pub Date : 2024-11-01 Epub Date: 2023-11-04 DOI: 10.1016/j.hazl.2023.100090

Ravidarshdeep kaur , Atul Garkal , Lopmudra Sarode , Priyanka Bangar , Tejal Mehta , Dhirendra Pratap Singh , Rakesh Rawal

引用次数: 0

Cyanide and chloroform detection through J-aggregates based aggregation induced emission probe with real sample applications 基于聚合诱导发射探针的氰化物和氯仿检测与实际样品应用

IF 6.6

Journal of hazardous materials letters Pub Date : 2024-11-01 Epub Date: 2024-10-20 DOI: 10.1016/j.hazl.2024.100132

Aqsa Pervaiz , Sohail Anjum Shahzad , Mohammed A. Assiri , Tayyeba Javid , Hasher Irshad , Katrine Qvortrup

{"title":"Cyanide and chloroform detection through J-aggregates based aggregation induced emission probe with real sample applications","authors":"Aqsa Pervaiz , Sohail Anjum Shahzad , Mohammed A. Assiri , Tayyeba Javid , Hasher Irshad , Katrine Qvortrup","doi":"10.1016/j.hazl.2024.100132","DOIUrl":"10.1016/j.hazl.2024.100132","url":null,"abstract":"<div><div>Isopthalamide based probe <strong>DPI</strong> has been synthesized by an easy two-step substitution reaction. Unique fluorescence properties of probe <strong>DPI</strong> were exploited for sensing of CNˉ and chloroform. Various spectroscopic techniques such as NMR, LC-MS, SEM, DLS, UV-<em>Vis</em>. and fluorescence spectroscopy in combination with DFT studies were used to confirm efficient detection of CN‾ through a non-covalent interaction of cyanide with probe. Furthermore, probe showed fluorescence emission at 360 nm which shifted significantly to 415 nm upon addition of water exhibiting unique AIE characteristics and formation of desired J-aggregates. Mechanistically, CN‾ and chloroform were selectively detected through fluorescence quenching with 9 nM and 0.2 % v/v limit of detection (LOD), respectively. Photoinduced electron transfer (PET) was proven to be involved as a sensing mechanism. Moreover, <strong>DPI</strong> exhibited interesting solvatochromism properties. <strong>DPI</strong> was proven to be a highly sensitive probe which showed solid-state and vapor phase on-field detection of CN‾. Similar sensing behavior of <strong>DPI</strong> probe towards CN‾ was seen in food and water samples.</div></div>","PeriodicalId":93463,"journal":{"name":"Journal of hazardous materials letters","volume":"5 ","pages":"Article 100132"},"PeriodicalIF":6.6,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142529683","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

Investigating the toxicological effects of nanomaterials in food packaging associated with human health and the environment 调查食品包装中的纳米材料对人类健康和环境的毒理学影响

IF 6.6

Journal of hazardous materials letters Pub Date : 2024-11-01 Epub Date: 2024-09-12 DOI: 10.1016/j.hazl.2024.100125

Rakesh Kumar Gupta, Proshanta Guha, Prem Prakash Srivastav

{"title":"Investigating the toxicological effects of nanomaterials in food packaging associated with human health and the environment","authors":"Rakesh Kumar Gupta, Proshanta Guha, Prem Prakash Srivastav","doi":"10.1016/j.hazl.2024.100125","DOIUrl":"10.1016/j.hazl.2024.100125","url":null,"abstract":"<div><p>Nanomaterials (NMs) have revolutionized food packaging by offering unique properties such as enhanced barrier functions, antimicrobial activity, and prolonged shelf life. However, concerns over the potential adverse effects of these materials on human health and the environment have prompted extensive research. This review explores the toxicological implications of NMs used in food packaging, focusing on their migration mechanisms, interactions with biological systems, and environmental impact. NMs, due to their small size and high surface area-to-volume ratio, can migrate from packaging materials into food under various conditions, potentially leading to human exposure through ingestion. Studies have highlighted the ability of certain NMs, such as silver nanoparticles (AgNPs), titanium dioxide nanoparticles (TiO<sub>2</sub> NPs), and zinc oxide nanoparticles (ZnO NPs), to induce oxidative stress, inflammation, genotoxicity, and cellular dysfunction in vitro and in vivo. Furthermore, the environmental release of NMs during manufacturing, use, and disposal stages poses risks to ecosystems and human health. This review synthesizes current knowledge, identifies research gaps, and discusses regulatory challenges associated with the safe use of NMs in food packaging. Future research directions are proposed to enhance the understanding of NM toxicity, improve risk assessment methodologies, and develop sustainable packaging alternatives. By addressing these issues, stakeholders can effectively manage the risks while harnessing the benefits of nanotechnology in food packaging innovation.</p></div>","PeriodicalId":93463,"journal":{"name":"Journal of hazardous materials letters","volume":"5 ","pages":"Article 100125"},"PeriodicalIF":6.6,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666911024000248/pdfft?md5=247b71c3360475cb8185154b20477f7c&pid=1-s2.0-S2666911024000248-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142241870","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

Fast and highly selective anionic azo dye removal over unique PVDF/MIL-100(Cr) mixed matrix membranes 通过独特的 PVDF/MIL-100(Cr)混合基质膜快速、高选择性地去除阴离子偶氮染料

Journal of hazardous materials letters Pub Date : 2024-11-01 Epub Date: 2024-03-17 DOI: 10.1016/j.hazl.2024.100107

Fuja Sagita , Kholifatul Mukhoibibah , Witri Wahyu Lestari , Aep Patah , Cynthia L. Radiman , Grandprix T.M. Kadja

{"title":"Fast and highly selective anionic azo dye removal over unique PVDF/MIL-100(Cr) mixed matrix membranes","authors":"Fuja Sagita , Kholifatul Mukhoibibah , Witri Wahyu Lestari , Aep Patah , Cynthia L. Radiman , Grandprix T.M. Kadja","doi":"10.1016/j.hazl.2024.100107","DOIUrl":"https://doi.org/10.1016/j.hazl.2024.100107","url":null,"abstract":"<div><p>Water pollution is a major challenge in the industrial era that gained the attention of researchers, especially for dye wastewater. Membrane technology is applied to address this issue due to its efficient and effective process. MIL-100(Cr) is a metal-organic framework that becomes an interesting material in membrane technology due to its highly porous characteristics (pore sizes of 24 Å and 29 Å), large surface area, and decent stability. In this study, polyvinylidene fluoride (PVDF) was modified with MIL-100(Cr) to fabricate PVDF/MIL-100(Cr) mixed matrix membranes (MMMs) for congo red (CR) dye removal. Furthermore, the membrane performances were determined by its permeability, selectivity, and antifouling properties. The results show that adding MIL-100(Cr) could enhance the membrane’s porosity and average pore size, which led to a boost in membrane permeability. Interestingly, the rejection of the membrane is maintained at a remarkably high level, above 95%, because of the electrostatic repulsion between the membrane surface with anionic congo red. The optimum concentration of MIL-100(Cr) is 1% (w/w), with a permeability of 50.90 L m<sup>−2</sup> h<sup>−1</sup> and rejection of 99.9%. Moreover, the flux recovery ratio (FRR) is around 90%, showing notable resistance to the fouling phenomena.</p></div>","PeriodicalId":93463,"journal":{"name":"Journal of hazardous materials letters","volume":"5 ","pages":"Article 100107"},"PeriodicalIF":0.0,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666911024000066/pdfft?md5=0ddd6febea3f60c0d980292dfd084700&pid=1-s2.0-S2666911024000066-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140180465","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

Uranium and arsenic bioremediation potential of plastic associated multi-metal tolerant Bacillus sp. EIKU23 与塑料相关的耐多金属芽孢杆菌 EIKU23 的铀和砷生物修复潜力

Journal of hazardous materials letters Pub Date : 2024-11-01 Epub Date: 2023-12-29 DOI: 10.1016/j.hazl.2023.100101

Atif Aziz Chowdhury , Nilendu Basak , Ekramul Islam

{"title":"Uranium and arsenic bioremediation potential of plastic associated multi-metal tolerant Bacillus sp. EIKU23","authors":"Atif Aziz Chowdhury , Nilendu Basak , Ekramul Islam","doi":"10.1016/j.hazl.2023.100101","DOIUrl":"https://doi.org/10.1016/j.hazl.2023.100101","url":null,"abstract":"<div><p>Plastic waste accumulation is a significant environmental concern as it promotes microbial growth and acts as a carrier for heavy metals. This study focuses on a <em>Bacillus</em> sp. strain isolated from the surface of a used plastic bottle, tolerant to various potential toxic elements (PTEs) such as chromium, nickel, cobalt, copper, zinc, arsenite [As(III)], but sensitive to uranium (U) and arsenate [As(V)] toxicity. The strain demonstrates growth under different abiotic stress conditions, with the optimal pH range of 5.0–8.0 and a temperature of 30 °C. It shows remarkable removal capabilities, removing > 23.3% of U, > 38% of As(III)), and > 22.6% of As(V) from an initial dose of 100 mg L<sup>−1</sup> in an aqueous solution. The biosorption capacity for U, As(III), and As(V) is 3.12, 3.1, and 1.8 mg g<sup>−1</sup> of biomass, respectively. Kinetic modelling suggests that the biosorption of U and As(V) follows a pseudo-second-order mechanism, while As(III) biosorption follows a pseudo-first-order mechanism. Moreover, the strain has the ability to precipitate > 38.1% and ∼67% of U using bacterially released phosphate from inorganic and organic sources, respectively. These findings highlight the strain's potential for bioremediation of PTE-contaminated environments, providing valuable insights for optimizing metal removal and immobilization processes in future research.</p></div>","PeriodicalId":93463,"journal":{"name":"Journal of hazardous materials letters","volume":"5 ","pages":"Article 100101"},"PeriodicalIF":0.0,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666911023000278/pdfft?md5=00aa0ff43d77569d99ac4894ac3b04a7&pid=1-s2.0-S2666911023000278-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139100678","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