Journal of hazardous materials最新文献_第4页

Characteristics of biofilms on polylactic acid microplastics and their inhibitory effects on the growth of rice seedlings: A comparative study of petroleum-based microplastics. 聚乳酸微塑料上生物膜的特征及其对水稻秧苗生长的抑制作用：石油基微塑料比较研究。

Journal of hazardous materials Pub Date : 2024-10-05 Epub Date: 2024-08-09 DOI: 10.1016/j.jhazmat.2024.135469

Yizhuo Chen, Bo Cui, Yuhang Dou, Huiyu Fan, Yanjun Fang, Lei Wang, Zhenghua Duan

{"title":"Characteristics of biofilms on polylactic acid microplastics and their inhibitory effects on the growth of rice seedlings: A comparative study of petroleum-based microplastics.","authors":"Yizhuo Chen, Bo Cui, Yuhang Dou, Huiyu Fan, Yanjun Fang, Lei Wang, Zhenghua Duan","doi":"10.1016/j.jhazmat.2024.135469","DOIUrl":"10.1016/j.jhazmat.2024.135469","url":null,"abstract":"Increasing evidence highlights the negative effects of microplastics (MPs) on crops and bio-based plastics offer an alternative to conventional plastics. However, there is limited knowledge on the impacts and mechanisms of bio-based MPs on crop physiology. In this study, bio-based polylactic acid (PLA) and petroleum-based MPs [polyamide (PA) and polypropylene (PP)] were added to hydroponic cultures planted with rice (Oryza sativa L.) seedlings to assess their toxicity. Compared to PA and PP MPs, PLA MPs experienced greater aging after 28 days of exposure, and their surfaces were loaded with more rod-shaped microorganisms with potential plastic degradation ability, such as Proteobacteria and Bacteroidota, which competed with rice seedlings for carbon and nitrogen sources for self-multiplication, thus altering the carbon fixation and nitrogen cycling processes during rice seedling growth. Down-regulation of amino acid and lipid metabolisms in the PLA treatment inhibited the normal synthesis of chlorophyll in rice seedling leaves. Consequently, decreases in the biomass and height of rice seedling roots and shoots were observed in the PLA MP treatment. This study provides evidence that bio-based MPs may have a more severe impact on crop growth than petroleum-based MPs.","PeriodicalId":94082,"journal":{"name":"Journal of hazardous materials","volume":"478 ","pages":"135469"},"PeriodicalIF":0.0,"publicationDate":"2024-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142038099","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

Multi-targets detection via combination of multi-stimulus-response engineered bacteria and hydrogel-based separation platform. 结合多刺激响应工程细菌和水凝胶分离平台进行多目标检测。

Journal of hazardous materials Pub Date : 2024-10-05 Epub Date: 2024-08-18 DOI: 10.1016/j.jhazmat.2024.135578

Huachao Che, Xike Tian, Yulun Nie, Yong Li, Liqiang Lu, Yuguang Hu

{"title":"Multi-targets detection via combination of multi-stimulus-response engineered bacteria and hydrogel-based separation platform.","authors":"Huachao Che, Xike Tian, Yulun Nie, Yong Li, Liqiang Lu, Yuguang Hu","doi":"10.1016/j.jhazmat.2024.135578","DOIUrl":"10.1016/j.jhazmat.2024.135578","url":null,"abstract":"Establishing a method similar to ICP-MS that can quantitatively analyze multiple heavy metals simultaneously, conveniently, and in situ is highly anticipated. In this study, we integrated the sensing elements of multiple targets and different fluorescence reporting elements to construct an engineered Escherichia coli. When these targets are present, the engineered bacteria can emit a fluorescent signal at the corresponding wavelength. To avoid the inability to accurately distinguish and quantify the content of each target due to the overlap of fluorescence signals when multiple targets coexist, a hydrogel-based separation platform similar to a separation column was constructed. The hydrogel platform can change the detection limit (LOD) and sensitivity by adjusting the adsorption strength towards different targets, so as to realize the differentiation and recognition of their respective detection signals. The LODs of this new detection method for Cd(II), Hg(II), As(III), and Pb(II) are 1.249, 0.380, 3.917, and 0.755 μg/L, respectively. In addition, this biosensor system was applied to detect coexisting Cd(II), Hg(II), As(III), and Pb(II) in actual samples with a recovery rate of 85.61-110.30 %, which is consistent with the classical ICP-MS detection results, confirming the accuracy and reliability of the method for detecting multiple heavy metal coexisting samples.","PeriodicalId":94082,"journal":{"name":"Journal of hazardous materials","volume":"478 ","pages":"135578"},"PeriodicalIF":0.0,"publicationDate":"2024-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142038106","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

Effects of active silicon amendment on Pb(II)/Cd(II) adsorption: Performance evaluation and mechanism. 活性硅修正对铅（II）/镉（II）吸附的影响：性能评估与机理。

Journal of hazardous materials Pub Date : 2024-10-05 Epub Date: 2024-08-23 DOI: 10.1016/j.jhazmat.2024.135614

Xueqin Jiang, Zhenyuan Liu, Bo Yan, Lingzhi Zhao, Tao Chen, Xiaofan Yang

{"title":"Effects of active silicon amendment on Pb(II)/Cd(II) adsorption: Performance evaluation and mechanism.","authors":"Xueqin Jiang, Zhenyuan Liu, Bo Yan, Lingzhi Zhao, Tao Chen, Xiaofan Yang","doi":"10.1016/j.jhazmat.2024.135614","DOIUrl":"10.1016/j.jhazmat.2024.135614","url":null,"abstract":"In this study, a high-Si (Si) adsorbent (APR@Sam) was prepared by acid leaching slag (APR) from lead-zinc (Pb-Zn) tailings based on high-temperature alkali melting technology. The synthesized Si-based materials were applied to aqueous solutions contaminated with Pb and cadmium (Cd) to investigate the crucial role of active Si in sequestering heavy metals. The adsorption capacities of APR@Sam and the Si-depleted material (APR@Sam-NSi) were studied under different pH and temperature conditions. The results showed that as the pH increased from 3 to 7, the adsorption capacity increased, the active Si content in the solution increased by 63 %, and the maximum pH of the solution after adsorption was 7.12. After the removal of active Si, the Pb (II) and Cd (II) adsorption capacities of APR@Sam decreased by 45 % and 11.96 %, respectively. OH- promoted the release of Si into the solution, enhancing the material's adsorption efficiency. The reaction mechanism is mainly attributed to surface complexation guided by Si-O and Si-O-Si bonds, metal cation exchange, and bidentate coordination. The results indicated that the Si component is critical for the removal of Pb (II) and Cd (II) by APR@Sam and provide valuable insights into resource recovery strategies from leaching residues.","PeriodicalId":94082,"journal":{"name":"Journal of hazardous materials","volume":"478 ","pages":"135614"},"PeriodicalIF":0.0,"publicationDate":"2024-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142074891","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

Hydrogen bonding-mediated interaction underlies the enhanced membrane toxicity of chemically transformed polystyrene microplastics by cadmium. 氢键介导的相互作用是镉增强化学转化聚苯乙烯微塑料膜毒性的基础。

Journal of hazardous materials Pub Date : 2024-10-05 Epub Date: 2024-08-22 DOI: 10.1016/j.jhazmat.2024.135562

Wanqing Zhao, Tong Ye, Jianwen Zhou, Xuan Zhang, Ke Wang, Hong Zhang, Jiansheng Cui, Shuping Zhang, Lixin Wang

{"title":"Hydrogen bonding-mediated interaction underlies the enhanced membrane toxicity of chemically transformed polystyrene microplastics by cadmium.","authors":"Wanqing Zhao, Tong Ye, Jianwen Zhou, Xuan Zhang, Ke Wang, Hong Zhang, Jiansheng Cui, Shuping Zhang, Lixin Wang","doi":"10.1016/j.jhazmat.2024.135562","DOIUrl":"10.1016/j.jhazmat.2024.135562","url":null,"abstract":"The global attention on microplastic pollution and its implications for human health has grown in recent years. Additionally, the co-existence of heavy metals may significantly alter microplastics' physicochemical characteristics, potentially amplifying their overall toxicity-a facet that remains less understood. In this study, we focused the membrane toxicity of modified polystyrene microplastics (PS-MPs) following cadmium (Cd) pretreatment. Our findings revealed that Cd-pretreated PS-MPs exacerbated their toxic effects, including diminished membrane integrity and altered phase fluidity in simulated lipid membrane giant unilamellar vesicles (GUVs), as well as heightened membrane permeability, protein damage, and lipid peroxidation in red blood cells and macrophages. Mechanistically, these augmented membrane toxicities can be partially ascribed to modifications in the surface roughness and hydrophilicity of Cd-pretreated PS-MPs, as well as to interactions between PS-MPs and lipid bilayers. Notably, hydrogen bonds emerged as a crucial mechanism underlying the enhanced interaction of PS-MPs with lipid bilayers.","PeriodicalId":94082,"journal":{"name":"Journal of hazardous materials","volume":"478 ","pages":"135562"},"PeriodicalIF":0.0,"publicationDate":"2024-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142047716","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

Synergism of endophytic microbiota and plants promotes the removal of polycyclic aromatic hydrocarbons from the Alfalfa rhizosphere. 内生微生物群与植物的协同作用促进了紫花苜蓿根瘤菌群对多环芳烃的清除。

Journal of hazardous materials Pub Date : 2024-10-05 Epub Date: 2024-08-20 DOI: 10.1016/j.jhazmat.2024.135513

Xianghui Cheng, Longfei Jiang, Xuan Zhao, Shuang Wang, Jibing Li, Chunling Luo, Gan Zhang

{"title":"Synergism of endophytic microbiota and plants promotes the removal of polycyclic aromatic hydrocarbons from the Alfalfa rhizosphere.","authors":"Xianghui Cheng, Longfei Jiang, Xuan Zhao, Shuang Wang, Jibing Li, Chunling Luo, Gan Zhang","doi":"10.1016/j.jhazmat.2024.135513","DOIUrl":"10.1016/j.jhazmat.2024.135513","url":null,"abstract":"Endophytic bacteria can promote plant growth and accelerate pollutant degradation. However, it is unclear whether endophytic consortia (Consortium_E) can stabilize colonisation and degradation. We inoculated Consortium_E into the rhizosphere to enhance endophytic bacteria survival and promote pollutant degradation. Rhizosphere-inoculated Consortium_E enhanced polycyclic aromatic hydrocarbon (PAH) degradation rates by 11.5-13.1 % compared with sole bioaugmentation and plant treatments. Stable-isotope-probing (SIP) showed that the rhizosphere-inoculated Consortium_E had the largest number of degraders (8 amplicon sequence variants). Furthermore, only microbes from Consortium_E were identified among the degraders in bioaugmentation treatments, indicating that directly participated in phenanthrene metabolism. Interestingly, Consortium_E reshaped the community structure of degraders without significantly altering the rhizosphere community structure, and strengthened the core position of degraders in the network, facilitating close interactions between degraders and non-degraders in the rhizosphere, which were crucial for ensuring stable functionality. The synergistic effect between plants and Consortium_E significantly enhanced the upregulation of aromatic hydrocarbon degradation and auxiliary degradation pathways in the rhizosphere. These pathways showed a non-significant increasing trend in the uninoculated rhizosphere compared with the control, indicating that Consortium_E primarily promotes rhizosphere effects. Our results explore the Consortium_E bioaugmentation mechanism, providing a theoretical basis for the ecological restoration of contaminated soils.","PeriodicalId":94082,"journal":{"name":"Journal of hazardous materials","volume":"478 ","pages":"135513"},"PeriodicalIF":0.0,"publicationDate":"2024-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142047725","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

For aqueous/soil cadmium immobilization under acid attack, does the hydroxyapatite converted from Pseudochrobactrum sp. DL-1 induced vaterite necessarily show higher stability? 对于在酸性侵蚀下固定水体/土壤中的镉，由假包囊杆菌 DL-1 诱导的水苏石转化而成的羟基磷灰石是否一定具有更高的稳定性？

Journal of hazardous materials Pub Date : 2024-10-05 Epub Date: 2024-08-22 DOI: 10.1016/j.jhazmat.2024.135631

Mingping Sheng, Yikai Liu, Guoquan Zeng, Qingquan Zhang, He Peng, Ling Lei, Huakang Liu, Nan He, Heng Xu, Hongyan Guo

{"title":"For aqueous/soil cadmium immobilization under acid attack, does the hydroxyapatite converted from Pseudochrobactrum sp. DL-1 induced vaterite necessarily show higher stability?","authors":"Mingping Sheng, Yikai Liu, Guoquan Zeng, Qingquan Zhang, He Peng, Ling Lei, Huakang Liu, Nan He, Heng Xu, Hongyan Guo","doi":"10.1016/j.jhazmat.2024.135631","DOIUrl":"10.1016/j.jhazmat.2024.135631","url":null,"abstract":"Microbial induced carbonate precipitation (MICP) technology was widely applied to immobilize heavy metals, but its long-term stability is tough to maintain, particularly under acid attack. This study successfully converted Pseudochrobactrum sp. DL-1 induced vaterite (a rare crystalline phase of CaCO3) to hydroxyapatite (HAP) at 30 ℃. The predominant conversion mechanism was the dissolution of CdCO3-containing vaterite and the simultaneous recrystallization of Ca4.03Cd0.97(PO4)3(OH)-containing HAP. For aqueous Cd immobilization, stability test at pH 2.0-10.0 showed that the Cd2+ desorption rate of Cd-adsorbed vaterite (3.96-4.35 ‱) were 7.13-20.84 times greater than that of Cd-adsorbed HAP (0.19-0.61 ‱). For soil Cd immobilization under 60 days of acid-rain erosion, the highest immobilization rate (51.00 %) of exchangeable-Cd and the lowest dissolution rate (-0.18 %) of carbonate-Cd were achieved with 2 % vaterite, while the corresponding rates were 16.78 % and 1.31 % with 2 % HAP, respectively. Furthermore, vaterite outperformed HAP in terms of soil ecological thorough evaluation. In conclusion, for Cd immobilization by MICP under acid attack, DL-1 induced vaterite displayed direct application value due to its exceptional stability in soil and water, while the mineral conversion strategy we presented is useful for further enhancing the stability in water.","PeriodicalId":94082,"journal":{"name":"Journal of hazardous materials","volume":"478 ","pages":"135631"},"PeriodicalIF":0.0,"publicationDate":"2024-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142057621","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

Comprehensive design and performance validation of a wind tunnel for advanced respirable dust deposition investigations. 用于高级可吸入粉尘沉积研究的风洞的综合设计和性能验证。

Journal of hazardous materials Pub Date : 2024-10-05 Epub Date: 2024-08-13 DOI: 10.1016/j.jhazmat.2024.135516

Ahmed Aboelezz, Maria Beltran, Michael J Hargather, Mostafa Hassanalian, Pedram Roghanchi

{"title":"Comprehensive design and performance validation of a wind tunnel for advanced respirable dust deposition investigations.","authors":"Ahmed Aboelezz, Maria Beltran, Michael J Hargather, Mostafa Hassanalian, Pedram Roghanchi","doi":"10.1016/j.jhazmat.2024.135516","DOIUrl":"10.1016/j.jhazmat.2024.135516","url":null,"abstract":"This study presents the comprehensive design and performance validation of a wind tunnel specifically developed for advanced investigations into respirable dust deposition pertinent to coal mining environments. The design integrates a constant particle delivery system engineered to maintain uniform particle dispersion, which is critical for replicating real-world conditions in coal mines. Our methodology involved using ANSYS Fluent for the design and optimization of a blowing-type wind tunnel, with a focus on controlling turbulence levels and minimizing pressure drops, which are crucial for accurate dust behaviour simulation. The core of our research emphasizes the deployment of the Aerosol Lung Deposition Apparatus (ALDA) alongside a custom dust injection system to measure particle distributions within the test section. This setup enabled us to simulate the inhalation of coal dust particles, providing a realistic scenario for assessing potential hazards to miners. Validation of the tunnel's performance was achieved through extensive testing with dust sensors and a hot-wire anemometer, which verified the airflow velocity and turbulence against the initial design specifications. The findings affirm the wind tunnel's capability to effectively model dust deposition and its impacts, thereby offering opportunities for enhancing miner safety and health standards.","PeriodicalId":94082,"journal":{"name":"Journal of hazardous materials","volume":"478 ","pages":"135516"},"PeriodicalIF":0.0,"publicationDate":"2024-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142057685","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

The new region demarcation framework for implementing the joint prevention and control of groundwater pollution: A case study in western of Bohai Bay, China. 实施地下水污染联防联控的新区域划分框架：中国渤海湾西部案例研究。

Journal of hazardous materials Pub Date : 2024-10-05 Epub Date: 2024-08-18 DOI: 10.1016/j.jhazmat.2024.135565

Bin Hu, Panwen Li, Ruihui Chen, Yinan Zheng, Jiao Li, Yi Li

{"title":"The new region demarcation framework for implementing the joint prevention and control of groundwater pollution: A case study in western of Bohai Bay, China.","authors":"Bin Hu, Panwen Li, Ruihui Chen, Yinan Zheng, Jiao Li, Yi Li","doi":"10.1016/j.jhazmat.2024.135565","DOIUrl":"10.1016/j.jhazmat.2024.135565","url":null,"abstract":"The joint groundwater pollution prevention and control (GPPC) strategy has been extensively implemented to address the coastal region groundwater pollution challenges in China. However, regional groundwater pollution control and treatment efficiency cannot achieve the expected results due to the lack of regional priority control orders and accurate restoration levels. Thus, this study developed a new region demarcation framework method for delineating GPPC zones, in tandem with a comprehensive pollution index method, the DRASTIC model, source apportionment. To validate the new methodological framework, a case study of groundwater pollution in Qinhuangdao, the western of Bohai Bay, China, was implemented to calculate pollution prevention and control zoning. In total, 340 groundwater samples from shallow aquifers with 9 target pollutants (NO3-, NO2-, NH4+, As, Cd, Cr, Cu, Pb, and Ni) were selected as the dataset for GPPC regionalization. The results showed that GPPC zoning further clarified the direction of groundwater pollution protection and management in Qinhuangdao. Compared to the traditional method, the new GPPC zoning better reflects groundwater mobility characteristics and pollution transport and enrichment patterns in terms of groundwater functional integrity and delineation. This new regional demarcation framework method contributes to providing support for the fine division of groundwater pollution zoning and precise pollution control for groundwater resource management in China.","PeriodicalId":94082,"journal":{"name":"Journal of hazardous materials","volume":"478 ","pages":"135565"},"PeriodicalIF":0.0,"publicationDate":"2024-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142038065","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

Contributions from typical sources to microplastics in surface water of a semiarid urban river. 半干旱城市河流地表水中微塑料的典型来源。

Journal of hazardous materials Pub Date : 2024-10-05 Epub Date: 2024-08-17 DOI: 10.1016/j.jhazmat.2024.135570

Zheng Liu, Ying Bai, Xiaojiong Zhao, Xianyu Liu, Huijuan Wei, Mingxia Wei, Yang Ma

{"title":"Contributions from typical sources to microplastics in surface water of a semiarid urban river.","authors":"Zheng Liu, Ying Bai, Xiaojiong Zhao, Xianyu Liu, Huijuan Wei, Mingxia Wei, Yang Ma","doi":"10.1016/j.jhazmat.2024.135570","DOIUrl":"10.1016/j.jhazmat.2024.135570","url":null,"abstract":"Urban regions are suggested to be the main source of microplastic pollution in rivers. Thus, we investigated the spatiotemporal distribution of microplastics in the surface water of the Lanzhou section of the Yellow River in a semiarid region and the contributions of typical sources. The average concentration of microplastics in the surface water of the river was 0.98 particles (p) L-1. The daily quantity flux and mass flux were 3.63 × 109 p d-1 and 95.38 kg d-1, respectively. Most of the microplastics in the river were fibers and fragments, composed of polyethylene terephthalate, polyamide, polypropylene and polyethylene. A large quantity and mass of microplastics were found in the high-flow period of the river. The hotspots of microplastic pollution were residential and tourist reaches. The spatial distribution of microplastics was influenced by anthropogenic factors. However, the main factor influencing the temporal distribution of microplastics was precipitation seasonality. Most of the microplastics in the surface water originated from drainage ditches. The direct contribution of microplastics from atmospheric deposition was also considerable. Our results suggest that the contribution of microplastics from atmospheric deposition to urban rivers is worthy of attention.","PeriodicalId":94082,"journal":{"name":"Journal of hazardous materials","volume":"478 ","pages":"135570"},"PeriodicalIF":0.0,"publicationDate":"2024-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142038101","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

Decomposition of waterside plants greatly affects the transformation and mobility of sedimentary antimony in water-sediment systems after emergency treatment: A microcosm study. 水边植物的分解在很大程度上影响着应急处理后水沙系统中沉积锑的转化和迁移：一项微观世界研究。

Journal of hazardous materials Pub Date : 2024-10-05 Epub Date: 2024-08-22 DOI: 10.1016/j.jhazmat.2024.135598

Jining Li, Mengdi Liu, Lizhi Tong, Yiwen Zhou, Linghao Kong

{"title":"Decomposition of waterside plants greatly affects the transformation and mobility of sedimentary antimony in water-sediment systems after emergency treatment: A microcosm study.","authors":"Jining Li, Mengdi Liu, Lizhi Tong, Yiwen Zhou, Linghao Kong","doi":"10.1016/j.jhazmat.2024.135598","DOIUrl":"10.1016/j.jhazmat.2024.135598","url":null,"abstract":"Polyferric sulfate (PFS) coagulation has proven to be effective in addressing antimony (Sb) water pollution accidents; however, the impact of waterside plant decomposition on its effectiveness has not been adequately elucidated. This study investigated the effects of Alternanthera philoxeroides (AP) and Digitaria sanguinalis (DS) decomposition on Sb cycling after PFS treatment. Without plant decomposition, the Fe(OH)3 hydrolysate-associated Sb remained stable, and the sediment continued to exhibit Sb sink properties. Plant residue decomposition facilitated sedimentary Sb release, and DS decomposition had a greater impact than AP decomposition. The strong decomposition phases triggered abiotic/biotic reduction processes, leading to Fe(OH)3 dissolution and subsequent Sb(V) release. Concurrently, sulfate reduction and dissolved organic matter (DOM) release regulated Sb mobility. In addition, Sb(V) reduction occurred, and Sb(III) was elevated in the overlying water. The Sb(III) levels gradually decreased during the later aerobic stages, however, did not completely disappear within a short timeframe. Furthermore, the role of the sediment as an Sb sink was significantly hindered, maintaining relatively high levels of dissolved Sb. Sedimentary Sb speciation analysis revealed that plant decomposition induced a shift in Fe-oxyhydroxide-bound Sb to more bioavailable and stable fractions. Our results indicate that plant residue decomposition easily deteriorates PFS efficiency and increases the risk of secondary Sb pollution in water-sediment systems.","PeriodicalId":94082,"journal":{"name":"Journal of hazardous materials","volume":"478 ","pages":"135598"},"PeriodicalIF":0.0,"publicationDate":"2024-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142047714","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