Journal of Hazardous Materials最新文献_第9页

Target Immobilized Phases of Heavy Metals in Hazardous Waste Based Lightweight Aggregate 基于危险废物的轻质骨料中重金属的目标固定化阶段

IF 13.6 1区环境科学与生态学

Journal of Hazardous Materials Pub Date : 2024-11-14 DOI: 10.1016/j.jhazmat.2024.136522

Baodong Li, Shouwei Jian, Xin Gao, Jianxiang Huang, Liming Huang, Amrita Hazarika, Arezou Babaahmadi

{"title":"Target Immobilized Phases of Heavy Metals in Hazardous Waste Based Lightweight Aggregate","authors":"Baodong Li, Shouwei Jian, Xin Gao, Jianxiang Huang, Liming Huang, Amrita Hazarika, Arezou Babaahmadi","doi":"10.1016/j.jhazmat.2024.136522","DOIUrl":"https://doi.org/10.1016/j.jhazmat.2024.136522","url":null,"abstract":"The potential leaching risk poses a concern for the large-scale recycling of hazardous waste as lightweight aggregates (LWAs). This paper investigated the combination state of heavy metals in target immobilized phases of LWA through both theoretical calculations and experimental verification. Results reveal that Pb can enter the feldspar crystal cell to form stable interstitial solid solutions, while Cu, Cr, and Ni can replace specific ions in spinel to form replacement solid solutions. The addition of target immobilized phases generally weakened the physical performance of LWAs, while reducing the leaching risk. The appropriate amount of the spinel phase favored the immobilization of Cu, Cr, and Ni, whereas albite contributed to the immobilization of Pb with low leaching values. Due to the lower melting temperature, albite could facilitate the introduction of a high-temperature liquid phase, enhancing the migration of Pb²⁺ for better immobilization in glassy phase. In contrast, anorthite exhibited a higher viscosity at 1100 °C, leading to ineffective physical encapsulation of heavy metal ions by the liquid phase. Heavy metal ions react with additional spinel phase at high temperatures to form stable solid solution phases. This study provides a novel method for regulating heavy metal leaching in hazardous waste-based LWA.","PeriodicalId":361,"journal":{"name":"Journal of Hazardous Materials","volume":"128 1","pages":""},"PeriodicalIF":13.6,"publicationDate":"2024-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142637808","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A review of enhanced adsorption removal of odor contaminants with low ppm concentration levels: the key to technological breakthrough as well as challenges 低ppm浓度水平的臭味污染物强化吸附去除技术综述：技术突破的关键与挑战

IF 13.6 1区环境科学与生态学

Journal of Hazardous Materials Pub Date : 2024-11-14 DOI: 10.1016/j.jhazmat.2024.136512

Wenying Li, Jianing Lv, Yang Yue, Yao Wang, Jia Zhang, Guangren Qian

{"title":"A review of enhanced adsorption removal of odor contaminants with low ppm concentration levels: the key to technological breakthrough as well as challenges","authors":"Wenying Li, Jianing Lv, Yang Yue, Yao Wang, Jia Zhang, Guangren Qian","doi":"10.1016/j.jhazmat.2024.136512","DOIUrl":"https://doi.org/10.1016/j.jhazmat.2024.136512","url":null,"abstract":"The industrial production processes often produce different concentrations and types of odorous pollutants. Most odors have a low odor threshold, and the human sense of smell can still have a strong, unpleasant odor even at low ppb concentrations. The main challenges in low ppm concentration odor purification are short contact time, high air volume, low equilibrium adsorption capacity, and easy physical desorption. For the first time, this work reviews the technical paths how to purify four typical types of low concentrations of odors such as H<sub>2</sub>S, NH<sub>3</sub>, CH<sub>3</sub>SH, and CH<sub>3</sub>SCH<sub>3</sub> from low ppm concentration levels to low ppb, with the view of the odor sources, the development of treatment technology, international permissible emission standards, and the recent status of adsorbent materials. To begin, Citespace software is employed to analyze the progress, hotspots, and technology trends in the field of odor pollutant research over the past 28 years and the factors that affect removal efficiency of low-concentration odorous pollutants are discussed in detail. Then, taking activated carbon, molecular sieve, and metal-organic frameworks as target adsorbents, how to strengthen the integrated ways of physical adsorption and chemical adsorption of these adsorbents are suggested starting from the synergistic effects of modifications for pore structure, surface chemical functional groups, and complexation and redox reactions of metal ions. As a practice, the application cases of purifying low-concentration odorous pollutants by the adsorption are briefly introduced. Finally, the challenges of developing novel adsorption materials and technologies to purify low-concentration odorous pollutants toward lower than odor threshold are presented.","PeriodicalId":361,"journal":{"name":"Journal of Hazardous Materials","volume":"21 1","pages":""},"PeriodicalIF":13.6,"publicationDate":"2024-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142637809","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Changes in global NO2 pollution by shipping during the COVID-19 lockdown: Implication for sustainable marine operations COVID-19 封锁期间全球航运 NO2 污染的变化：对可持续海洋作业的影响

IF 12.2 1区环境科学与生态学

Journal of Hazardous Materials Pub Date : 2024-11-13 DOI: 10.1016/j.jhazmat.2024.136482

S. Athul , J. Kuttippurath , V.K. Patel

{"title":"Changes in global NO2 pollution by shipping during the COVID-19 lockdown: Implication for sustainable marine operations","authors":"S. Athul , J. Kuttippurath , V.K. Patel","doi":"10.1016/j.jhazmat.2024.136482","DOIUrl":"10.1016/j.jhazmat.2024.136482","url":null,"abstract":"<div><div>Severe restrictions on human travel and consumption during the lockdown (LD) have affected global marine traffic and operations. The LD period is ideal for studying the emissions as there were restricted human activities. Although several pollutants are emitted by ships, the most important is nitrogen dioxide (NO<sub>2</sub>), and can be considered an indicator of shipping emissions. Therefore, we examine the changes in NO<sub>2</sub> pollution over the shipping lanes, ports and coasts across the globe during LD. Here, we find a significant decline in NO<sub>2</sub> during LD over the major lanes, including the USA–Europe trade routes through the North Atlantic Ocean, Asia–Middle East through the Arabian Sea, Interasia, and Intereuropean through the North Sea and Baltic Sea, about 10–20%, as analysed form the TROPOMI satellite measurements. A similar reduction over the sea straight pass, such as the Cape of Good Hope and the Strait of Malacca is also estimated. Furthermore, the major global ports of Callao, Santos, Antwerp, Rotterdam, Busan, Tubarao, Richards Bay, Barcelona, Durban and Chennai exhibit a significant decrease in NO<sub>2</sub> during LD, about 30%. The decline in NO<sub>2</sub> over the shipping routes and ports can be attributed to reduced cargo, passenger, fishing and tanker vessel density due to the LD restrictions; consistent with the emission inventory analysis. Henceforth, this study suggests strict environmental policies in the shipping sector to curb emissions, as pollution is a great concern for public health in the port cities and coastal regions.</div></div>","PeriodicalId":361,"journal":{"name":"Journal of Hazardous Materials","volume":"481 ","pages":"Article 136482"},"PeriodicalIF":12.2,"publicationDate":"2024-11-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142601524","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Mechanisms of nano zero-valent iron in enhancing dibenzofuran degradation by a Rhodococcus sp.: Trade-offs between ATP production and protection against reactive oxygen species 纳米零价铁在促进罗氏球菌降解二苯并呋喃中的作用机制ATP 生产与保护活性氧之间的权衡

IF 12.2 1区环境科学与生态学

Journal of Hazardous Materials Pub Date : 2024-11-13 DOI: 10.1016/j.jhazmat.2024.136502

Xu Wang , Yaning Che , Yonglan Xu , Yanan Wu , Hangzhou Xu , Li Li

{"title":"Mechanisms of nano zero-valent iron in enhancing dibenzofuran degradation by a Rhodococcus sp.: Trade-offs between ATP production and protection against reactive oxygen species","authors":"Xu Wang , Yaning Che , Yonglan Xu , Yanan Wu , Hangzhou Xu , Li Li","doi":"10.1016/j.jhazmat.2024.136502","DOIUrl":"10.1016/j.jhazmat.2024.136502","url":null,"abstract":"<div><div>Nano zero-valent iron (nZVI) can enhance pollutants biodegradation, but it displays toxicity towards microorganisms. Gram-positive (G<sup>+</sup>) bacteria exhibit greater resistance to nZVI than Gram-negative bacteria. However, mechanisms of nZVI accelerating pollutants degradation by G<sup>+</sup> bacteria remain unclear. Herein, we explored effects of nZVI on a G<sup>+</sup> bacterium, <em>Rhodococcus</em> sp. strain p52, and mechanisms by which nZVI accelerates biodegradation of dibenzofuran, a typical polycyclic aromatic compound. Electron microscopy and energy dispersive spectroscopy analysis revealed that nZVI could penetrate cell membranes, which caused damage and growth inhibition. nZVI promoted dibenzofuran biodegradation at certain concentrations, while higher concentration functioned later due to the delayed reactive oxygen species (ROS) mitigation. Transcriptomic analysis revealed that cells adopted response mechanisms to handle the elevated ROS induced by nZVI. ATP production was enhanced by accelerated dibenzofuran degradation, providing energy for protein synthesis related to antioxidant stress and damage repair. Meanwhile, electron transport chain (ETC) was adjusted to mitigate ROS accumulation, which involved downregulating expression of ETC complex I-related genes, as well as upregulating expression of the genes for the ROS-scavenging cytochrome bd complex and ETC complex II. These findings revealed the mechanisms underlying nZVI-enhanced biodegradation by G<sup>+</sup> bacteria, offering insights into optimizing bioremediation strategies involving nZVI.</div></div>","PeriodicalId":361,"journal":{"name":"Journal of Hazardous Materials","volume":"481 ","pages":"Article 136502"},"PeriodicalIF":12.2,"publicationDate":"2024-11-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142601505","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Pavement wear generates microplastics in stormwater runoff 路面磨损在雨水径流中产生微塑料

IF 12.2 1区环境科学与生态学

Journal of Hazardous Materials Pub Date : 2024-11-13 DOI: 10.1016/j.jhazmat.2024.136495

Kelsey Smyth , Shuyao Tan , Tim Van Seters , Vimy Henderson , Elodie Passeport , Jennifer Drake

{"title":"Pavement wear generates microplastics in stormwater runoff","authors":"Kelsey Smyth , Shuyao Tan , Tim Van Seters , Vimy Henderson , Elodie Passeport , Jennifer Drake","doi":"10.1016/j.jhazmat.2024.136495","DOIUrl":"10.1016/j.jhazmat.2024.136495","url":null,"abstract":"<div><div>Tire and road wear particles are a major source of microplastics to urban stormwater. They are composed of hetero-aggregates of abraded tire and pavement particles that are difficult to distinguish. While tire wear is a known source of microplastics, little is known on the contribution of pavement wear. This two-year field study with complementary lab testing evaluates the effects of pavement degradation on microplastic generation in stormwater from different pavement types: asphalt, concrete, and recycled rubber pavers. Pavement specimens from each site were collected and underwent degradation testing. We directly demonstrated that pavement wear is a source of microplastics in stormwater separate from tire wear. We showed that the rubber pavement released the most microplastics in lab testing, suggesting that the formulation of such novel recycled-tire pavers must undergo thorough testing before wide application. The asphalt pavement was the most susceptible to rutting and released the most microplastics in the field, including a large proportion of tire wear particles. Both land-use and pavement surface characteristics influenced microplastic generation. These results demonstrate the need to consider microplastic generation during pavement material selection and mitigate the spread of microplastics from pavement wear to nearby environments.</div></div>","PeriodicalId":361,"journal":{"name":"Journal of Hazardous Materials","volume":"481 ","pages":"Article 136495"},"PeriodicalIF":12.2,"publicationDate":"2024-11-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142601499","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Bioaerosol emission characteristics and potential risks during composting: Focus on pathogens and antimicrobial resistance 堆肥过程中的生物气溶胶排放特征和潜在风险：关注病原体和抗菌剂耐药性

IF 12.2 1区环境科学与生态学

Journal of Hazardous Materials Pub Date : 2024-11-12 DOI: 10.1016/j.jhazmat.2024.136466

Ruonan Ma , Lijuan Peng , Ruolan Tang , Tao Jiang , Jiali Chang , Guoxue Li , Jiani Wang , Yan Yang , Jing Yuan

{"title":"Bioaerosol emission characteristics and potential risks during composting: Focus on pathogens and antimicrobial resistance","authors":"Ruonan Ma , Lijuan Peng , Ruolan Tang , Tao Jiang , Jiali Chang , Guoxue Li , Jiani Wang , Yan Yang , Jing Yuan","doi":"10.1016/j.jhazmat.2024.136466","DOIUrl":"10.1016/j.jhazmat.2024.136466","url":null,"abstract":"<div><div>In this study, we analyzed bioaerosol emission characteristics and potential risks of antimicrobial resistance (AMR) during composting using the impaction culture method and metagenomic sequencing. The results showed that the highly saturated water vapor in the emission gas mitigated particulate matter emission during the thermophilic period. About the bioaerosols, the airborne aerobic bacterial emissions were suppressed as composting enters the mature period, and the airborne fungi are usually present as single-cell or small-cell aggregates (< 3.3 µm). In addition, the microbial community structure in bioaerosols was stable and independent of composting time. Most importantly, the PM<sub>2.5</sub> in bioaerosols contained large amounts of antibiotic resistance genes (ARGs), potential pathogens, and multidrug resistant pathogens, which were diverse and present in high concentrations. Among them, ARGs concentrations encoding 21 antibiotics ranged from – 4.50 to 0.70 ppm/m<sup>3</sup> (Log<sub>10</sub> ARGs). Among the 89 potential human pathogens detected, <em>Escherichia coli, Salmonella enterica, Klebsiella pneumoniae</em>, and <em>Staphylococcus aureus</em> were the only culturable potentially multidrug resistant pathogens carrying multiple ARGs encoding resistance at high concentrations (– 0.57 to 1.15 ppm/m<sup>3</sup> (Log<sub>10</sub> ARGs)), and were more likely to persist and multiply in oligotrophic environments. Our findings indicate that composting technology can transfer AMR from solid compost to gas phase and increase the risk of AMR transmission.</div></div>","PeriodicalId":361,"journal":{"name":"Journal of Hazardous Materials","volume":"481 ","pages":"Article 136466"},"PeriodicalIF":12.2,"publicationDate":"2024-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142599635","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Harnessing landfill-derived Bacillus subtilis (LLS-04) for bio-electrodegradation of di-butyl phthalate: Comprehensive toxicity assessment across multiple biological models 利用垃圾填埋场产生的枯草芽孢杆菌（LLS-04）对邻苯二甲酸二丁酯进行生物电降解：多种生物模型的综合毒性评估

IF 12.2 1区环境科学与生态学

Journal of Hazardous Materials Pub Date : 2024-11-12 DOI: 10.1016/j.jhazmat.2024.136480

Harshavardhan Mohan , Pavithra Muthukumar Sathya , Satabdi Acharya , Hyeon-Jin Jeong , Gwang-Min Lee , Jung-Hee Park , Kamala-Kannan Seralathan , Byung-Taek Oh

{"title":"Harnessing landfill-derived Bacillus subtilis (LLS-04) for bio-electrodegradation of di-butyl phthalate: Comprehensive toxicity assessment across multiple biological models","authors":"Harshavardhan Mohan , Pavithra Muthukumar Sathya , Satabdi Acharya , Hyeon-Jin Jeong , Gwang-Min Lee , Jung-Hee Park , Kamala-Kannan Seralathan , Byung-Taek Oh","doi":"10.1016/j.jhazmat.2024.136480","DOIUrl":"10.1016/j.jhazmat.2024.136480","url":null,"abstract":"<div><div>Di-butyl phthalate (DBP), a pervasive environmental contaminant, poses significant ecological and health risks due to its persistence and toxicity. This study investigates the potential of a landfill-derived <em>Bacillus subtilis</em> strain (LLS-04) in bio-electrodegradation of DBP, alongside a comprehensive toxicity assessment across multiple biological models. Bio-electrodegradation efficiency was compared to biodegradation and electrodegradation, revealing that bio-electrodegradation achieved a remarkable 98.57 % reduction in DBP concentration significantly outperforming the other methods. This enhanced degradation was attributed to improved microbial activity and enzyme production, as indicated by higher protein content and increased esterase and dehydrogenase activities in the bio-electrodegradation system. The optimized conditions facilitated efficient degradation, with HPLC-MS/MS analysis confirming the breakdown of DBP into non-toxic end products <em>via</em> a proposed metabolic pathway. A comprehensive toxicity assessment, including <em>in-silico</em> analysis, <em>in-vitro</em> cytotoxicity and brine shrimp lethality assays, demonstrated a significant reduction in toxicity of BES treated effluent compared to DBP untreated effluent. Furthermore, <em>in-vivo</em> toxicity studies using animal model supported these findings, demonstrating reduced toxicity in the BES treated effluent compared to the DBP untreated effluent. Overall, these findings highlight the potential application of bio-electrodegradation in bioremediation strategies for phthalate pollution, offering an effective solution for reducing both DBP concentration and its environmental toxicity.</div></div>","PeriodicalId":361,"journal":{"name":"Journal of Hazardous Materials","volume":"481 ","pages":"Article 136480"},"PeriodicalIF":12.2,"publicationDate":"2024-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142601529","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Thermally regulated flocculation-coalescence process by temperature-responsive cationic polymeric surfactant for enhanced crude oil-water separation 利用温度响应型阳离子聚合物表面活性剂的热调节絮凝-凝聚过程增强原油-水分离效果

IF 12.2 1区环境科学与生态学

Journal of Hazardous Materials Pub Date : 2024-11-12 DOI: 10.1016/j.jhazmat.2024.136491

Xianwu Zhang , Yijun Cao , Dan Yang , Wenshuai Yang , Bin Yan , Ling Zhang

{"title":"Thermally regulated flocculation-coalescence process by temperature-responsive cationic polymeric surfactant for enhanced crude oil-water separation","authors":"Xianwu Zhang , Yijun Cao , Dan Yang , Wenshuai Yang , Bin Yan , Ling Zhang","doi":"10.1016/j.jhazmat.2024.136491","DOIUrl":"10.1016/j.jhazmat.2024.136491","url":null,"abstract":"<div><div>Polymeric surfactants play a crucial role in the flocculation-assisted coalescence process due to their unique bridging effect. However, the steric hindrance induced by their large molecules severely impedes the coalescence of oil droplets. Herein, temperature-responsive polymeric surfactants (quaternary ammonium chitosan-g-PNIPAM, Q-g-PN) with thermally-modulated structure were designed by integrating thermal responsive moieties onto cationic chitosan. The as-prepared Q-g-PN exhibited enhanced oil-water separation efficiency through a thermally regulated flocculation-coalescence process. At low temperatures, the thermal-responsive Q-g-PN remains in a flexible hydrophilic extended state, facilitating the flocculation of dispersed oil droplets through bridging via electrostatic interaction. At high temperatures, the Q-g-PN structure collapses into a hydrophobic coil state, reducing steric hindrance and enhancing hydrogen bonding to asphaltenes, thus effectively promoting oil droplet coalescence. Bottle tests demonstrated that the demulsification performance of Q-g-PN could reach up to 94 % with the Q-g-PN concentration only of 0.001 wt% via the proposed temperature-regulated flocculation-coalescence process, which was further confirmed by investigating oil droplet behavior and phase transition of Q-g-PN during through molecular dynamic (MD) simulation of the reaction process. This work presents new insights into enhancing oil-water separation efficiency by regulating the flocculation-coalescence process through precise modulation of the molecular interactions between polymeric surfactants and emulsion droplets.</div></div>","PeriodicalId":361,"journal":{"name":"Journal of Hazardous Materials","volume":"481 ","pages":"Article 136491"},"PeriodicalIF":12.2,"publicationDate":"2024-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142601535","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Interface mechanism of Cd bioavailability by porewater prediction in paddy field system 水稻田系统孔隙水预测镉生物利用率的界面机制

IF 12.2 1区环境科学与生态学

Journal of Hazardous Materials Pub Date : 2024-11-07 DOI: 10.1016/j.jhazmat.2024.136453

Xiaguo Wei , Shuqiong Kong , Dawei Cai , Bing Bai , Ruiqi Liu , Yiyi Chen , Jie Chen , Zhihao Yi

{"title":"Interface mechanism of Cd bioavailability by porewater prediction in paddy field system","authors":"Xiaguo Wei , Shuqiong Kong , Dawei Cai , Bing Bai , Ruiqi Liu , Yiyi Chen , Jie Chen , Zhihao Yi","doi":"10.1016/j.jhazmat.2024.136453","DOIUrl":"10.1016/j.jhazmat.2024.136453","url":null,"abstract":"<div><div>Cadmium (Cd) contamination poses a significant threat to human health. Predicting the risk of Cd in rice grains is challenging due to the heterogeneity and complexity of bioavailable Cd in paddy soils. We proposed that porewater during the grain-filling period can effectively predict Cd bioavailability in rice (R<sup>2</sup> > 0.5, p < 0.05). The prediction mechanism was elucidated through soil-porewater interface characterization analysis and DFT calculations. Key factors determining Cd bioavailability included Cd<sup>2+</sup> and SO<sub>4</sub><sup>2−</sup> concentration, pH, and ORP of porewater, with pH showing the highest correlation. As porewater pH increased from 5 to 9, typical mineral surfaces gradually deprotonated and formed complexation bonds {<img>SOCd<sup>+</sup>} instead of {<img>SOH} or {<img>SOH<sub>2</sub><sup>+</sup>}. Additionally, the complexation energy between montmorillonite and Cd was 1.57–1.78 eV higher than that between goethite and Cd, while the protonation activation energy barrier on montmorillonite was 1.33–1.52 eV lower than on goethite. Therefore, {H<sup>+</sup>} concentration in porewater had the potential to quantify {<img>SOCd<sup>+</sup>} content and binding capacity, aiding Cd bioavailability prediction. This study outlines the mechanism of predicting heavy metal health risks in rice grains through porewater and offers a potential regulation approach for agricultural product safety.</div></div>","PeriodicalId":361,"journal":{"name":"Journal of Hazardous Materials","volume":"481 ","pages":"Article 136453"},"PeriodicalIF":12.2,"publicationDate":"2024-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142597717","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A review of liquid crystal monomers (LCMs) as emerging contaminants: Environmental occurrences, emissions, exposure routes and toxicity 回顾作为新兴污染物的液晶单体 (LCM)：环境发生率、排放、接触途径和毒性

IF 12.2 1区环境科学与生态学

Journal of Hazardous Materials Pub Date : 2024-09-19 DOI: 10.1016/j.jhazmat.2024.135894

Yulin Wang , Qianqian Jin , Huiju Lin , Xiaotong Xu , Kenneth M.Y. Leung , Kurunthachalam Kannan , Yuhe He

{"title":"A review of liquid crystal monomers (LCMs) as emerging contaminants: Environmental occurrences, emissions, exposure routes and toxicity","authors":"Yulin Wang , Qianqian Jin , Huiju Lin , Xiaotong Xu , Kenneth M.Y. Leung , Kurunthachalam Kannan , Yuhe He","doi":"10.1016/j.jhazmat.2024.135894","DOIUrl":"10.1016/j.jhazmat.2024.135894","url":null,"abstract":"<div><p>The widespread occurrence of liquid crystal monomers (LCMs) in the environment has raised concerns about their persistence, bioaccumulation, and toxicity (PBT). Here we review the lifecycle of environmental LCMs, focusing on their occurrences, emission sources, human exposure routes, and toxicity. Industrial emissions from Liquid Crystal Display (LCD) manufacturing and e-waste recycling are the primary point sources of LCMs. In addition, emissions from LCD products, air conditioning units, wastewater treatment plants, and landfills contribute to environmental occurrence of LCMs as secondary sources. Dietary routes were identified as the primary exposure pathways to humans. E-waste dismantling workers and infants/children are vulnerable populations to LCMs exposure. Exposure to LCMs has been shown to potentially induce oxidative stress, metabolic disorders, and endocrine disruption. Accumulation of LCMs in the brain and liver tissues of exposed animals highlights the need for toxicokinetic studies.</p></div>","PeriodicalId":361,"journal":{"name":"Journal of Hazardous Materials","volume":"480 ","pages":"Article 135894"},"PeriodicalIF":12.2,"publicationDate":"2024-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142246193","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0