Environmental Technology & Innovation最新文献

{"title":"The application years of biochar affect CH4 emission by negatively methanogens and increased rice yield","authors":"Kai Zhang ,&nbsp;Zhongcheng Zhang ,&nbsp;Yanghui Sui ,&nbsp;Jialing Wang ,&nbsp;Xiaobo Pei ,&nbsp;Yanze Zhao ,&nbsp;Jiping Gao ,&nbsp;Wenzhong Zhang","doi":"10.1016/j.eti.2025.104099","DOIUrl":"10.1016/j.eti.2025.104099","url":null,"abstract":"<div><div>Biochar influences CH₄ emissions, methane-associated microbial communities, and rice yields. However, the effects of biochar application over different durations remain unclear. This study investigated the impact of biochar application on CH₄ emissions, methane-associated microbial communities, and rice yield across different years. Five treatments were assessed based on the year of biochar application (NB: applied in April 2023; FB: applied in April 2016) along with three biochar application rates (CK: 0 t‧ha⁻¹; NB15, FB15: 15 t‧ha⁻¹; NB45, FB45: 45 t‧ha⁻¹). Biochar application improved the physical and chemical properties of the soil, with NB45 exhibiting the most pronounced effect. Compared with CK, CH₄ emissions increased under NB conditions but decreased under FB conditions. Additionally, emissions were higher at lower biochar application rates than at higher rates across all years. These trends were associated with shifts in the abundance of methanogenic and methane-oxidising bacteria in the soil. Biochar reduced the <em>pmoA</em>/<em>mcrA</em> ratio in paddy soil, with FB45 showing the greatest reduction. The composition of methanogenic and methane-oxidising bacterial species differed significantly between NB and FB soils, with <em>Chloroflexota</em> exhibiting the highest relative abundance in both bacterial groups. Biochar application enhanced CH₄ metabolism in methanogenic and methane-oxidising bacteria, with the strongest effect observed under the NB treatment. Moreover, biochar application significantly improved rice yield, increasing by 9.27 %, 12.58 %, 13.50 %, and 14.68 % under the NB15, NB45, FB15, and FB45 treatments, respectively. Overall, biochar effectively reduced CH₄ emissions, modulated the structure and function of methane-associated microbial communities, and enhanced rice yield.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"38 ","pages":"Article 104099"},"PeriodicalIF":6.7,"publicationDate":"2025-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143510070","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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}

{"title":"Dynamic evolution of residents' garbage sorting behavior under policy-driven change: Evidence from multi-wave data deduction in Shanghai","authors":"Wu Su ,&nbsp;Yao Wang ,&nbsp;Jianing Lv ,&nbsp;Junnan Ji ,&nbsp;Luying Xiao ,&nbsp;Jun Zhao ,&nbsp;Yongyou Nie ,&nbsp;Guangren Qian","doi":"10.1016/j.eti.2025.104095","DOIUrl":"10.1016/j.eti.2025.104095","url":null,"abstract":"<div><div>The cultivation of residents' garbage sorting behavior (RGSB) is a long-term process. Shanghai's garbage sorting spans 20 years, and different external force policies have been implemented. Taking Shanghai as a case, this work deduces the effectiveness of external force combination policies into continuous three stages. For the first time, an extended theory of planned behavior (TPB) model with multi-wave data is developed to analyze how external policies affect the RGSB through the action of internal elements during three stages. Unlike internal driving elements, there are differences in the effectiveness of external driving elements on the RGSB at different stages. Face-to-face publicity and education by instructors and incentive measure are effective in the first stage, but in the third stage they become inefficient. By longitudinal analysis, the overall trend of the attitude (ATT), perceived behavioral control (PBC), and garbage sorting intention (GSI) increases over time, while the RGSB increases and then decreases. Importantly, the GSI and the RGSB of floating population during the third stage should be much stressed. The novelty of this work resides in its comprehensive analysis of the dynamic evolution mechanisms of the RGSB, influenced by both internal and external driving elements.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"38 ","pages":"Article 104095"},"PeriodicalIF":6.7,"publicationDate":"2025-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143478928","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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}

{"title":"Assessment of Arctic sea ice dynamics and their impacts on precipitation moisture sources using deep learning approaches","authors":"Mojtaba Heydarizad ,&nbsp;Zhongfang Liu ,&nbsp;Mason Parker ,&nbsp;Rogert Sorí ,&nbsp;Thiago Mora ,&nbsp;Edward Thakur","doi":"10.1016/j.eti.2025.104088","DOIUrl":"10.1016/j.eti.2025.104088","url":null,"abstract":"<div><div>Stable isotopes of water (¹⁸O and ²H) are essential for analyzing the Arctic water cycle and climate variations. However, the link between sea ice extent changes as an important factor influencing Arctic climate and the isotopic composition of Arctic precipitation remains unclear. This study examined how sea ice extent in different Arctic marine regions affects precipitation isotopes at stations belonging to the Global Network of Isotopes in Precipitation (GNIP) across the Arctic. The main objective of this study was to evaluate the influence of sea ice extent variability on moisture sources and the isotopic composition of precipitation, with a particular focus on <em>d</em>-excess. Advanced deep learning techniques, including Long Short-Term Memory (LSTM), Deep Neural Network (DNN), and Recurrent Neural Network (RNN), were employed to analyze how variations in sea ice coverage impact the isotopic content in Arctic precipitation. To enhance prediction accuracy, Entropy Model Averaging (EMA) was used to ensemble the outputs of the models. Interpolated maps of the simulated isotope values were generated using Inverse Distance Weighting (IDW) to visualize spatial patterns. This study demonstrated the influence of sea ice changes on the isotopic composition of Arctic precipitation and simulated <em>d</em>-excess values. The reduction in sea ice increased Arctic moisture proportion (AMP) in precipitation, altering its isotopic composition. Analysis of <em>d</em>-excess revealed lower values in locally sourced precipitation and higher values in precipitation from subtropical sources. These findings highlight the key role of sea ice extent changes in influencing moisture sources and the isotopic composition of Arctic precipitation.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"38 ","pages":"Article 104088"},"PeriodicalIF":6.7,"publicationDate":"2025-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143578434","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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}

{"title":"Insights into tomato growth stimulation and induced resistance against Fusarium oxysporum f. sp. lycopersici by magnetite nanoparticles","authors":"Mengmeng Kong ,&nbsp;Fuli Wang ,&nbsp;Hairong Jing ,&nbsp;Huilian Xu ,&nbsp;Xiaoyong Liu ,&nbsp;Melanie Kah ,&nbsp;Jason C. White ,&nbsp;Yu Shen","doi":"10.1016/j.eti.2025.104103","DOIUrl":"10.1016/j.eti.2025.104103","url":null,"abstract":"<div><div>Agricultural productivity faces increasing challenges from fungal diseases and nutrient deficiencies, necessitating innovative solutions. While iron oxide nanoparticles show promise in agriculture, their effects on hormone-mediated growth regulation and disease resistance remain poorly understood. This study investigated the effects of Fe₃O₄ NPs on tomato growth and resistance against <em>Fusarium oxysporum</em> f. sp. <em>lycopersici Fol</em>. Tomato seedlings were hydroponically grown and treated with 0.5 and 1.0 mg/L Fe₃O₄ NPs or equivalent FeCl₃ concentrations. Treatment with 0.5 mg/L Fe₃O₄ NPs enhanced root length by 100 % and shoot length by 40 % compared to controls, outperforming FeCl₃ treatments which increased root and shoot length by only 36.7 % and 8.5 %, respectively. Fe₃O₄ NPs downregulated ABA-related genes, with <em>FMO</em>, <em>MYB71</em>, and <em>DnaJ1</em> expression decreasing by 71 %, 46 %, and 55 % respectively after 24 hours. Seedlings treated with 0.5 mg/L Fe₃O₄ NPs before <em>Fol</em> inoculation showed a 62.9 % reduction in disease severity as measured by AUDPC value of 1.3 versus 3.7 in controls and a 5-fold increase in ROS accumulation at 48 hours post-infection. Fe₃O₄ NPs strongly induced defense-related genes, with <em>PR1a</em>, <em>LoxC</em>, and <em>AOC</em> showing 14-fold, 182.1 %, and 111.2 % increased expression respectively within 12 hours of treatment. SA levels increased by 56.1 % and 68.6 % at 12- and 24-hours post-treatment. This priming effect was amplified when NP-treated plants were challenged with <em>Fol</em>. These findings demonstrate Fe₃O₄ NPs’ potential as a multifunctional nano-fertilizer, promoting both growth and disease resistance through modulation of phytohormone pathways.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"38 ","pages":"Article 104103"},"PeriodicalIF":6.7,"publicationDate":"2025-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143463612","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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}

{"title":"Real-time monitoring of methyl orange degradation in non-thermal plasma by integrating Raman spectroscopy with a hybrid machine learning model","authors":"Fan Zhou ,&nbsp;Jiangnan Chu ,&nbsp;Fu Lu ,&nbsp;Wenchong Ouyang ,&nbsp;Qi Liu ,&nbsp;Zhengwei Wu","doi":"10.1016/j.eti.2025.104100","DOIUrl":"10.1016/j.eti.2025.104100","url":null,"abstract":"<div><div>Researchers have developed a hybrid machine learning (ML) model that has been integrated with Raman spectroscopy to enable real-time prediction of methyl orange (MO) degradation concentrations in a non-thermal plasma (NTP) environment. The model combines three ML algorithms, including Linear Regression (LR), Partial Least Squares (PLS), and Decision Trees (DT), and has been created and optimized to study the degradation process. The model demonstrates excellent predictive performance, achieving an even lower <em>RMSE</em> of 0.0209 and 0.0381 g/L and higher <em>R</em>^<em>2</em> values of 0.9984 and 0.9969 for the training and test datasets, respectively. Based on this system, the impact of different plasma treatment parameters on MO degradation efficiency has been investigated. Among the results, MO (0.5 g/L) degraded completely whin 200 s when treated with an air plasma at a flow rate of 1 L/min and the applied discharge voltage of 20 kV. Furthermore, to understand the underlying mechanism of MO degradation, the individual contributions of different reactive oxygen species (ROS) to decomposition processes have been evaluated by employing effective scavengers, and the proposed degradation pathway was analyzed based on the identified intermediate products. This research introduces an innovative and highly efficient methodology for conducting online observation of pollutant degradation, optimizing the operational parameters of wastewater treatment in plasma, and enhancing their overall treatment effectiveness. Additionally, it establishes a solid foundation for integrating intelligent control systems, paving the way for fully automated decontamination processes.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"38 ","pages":"Article 104100"},"PeriodicalIF":6.7,"publicationDate":"2025-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143453607","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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}

{"title":"Enhancement of cadmium uptake in Cinnamomum camphora seedlings through the regulation of physiological resistance by three exogenous plant growth regulators","authors":"Chenyang Zhang ,&nbsp;Jihai Zhou ,&nbsp;Meng Na ,&nbsp;Shangqi Xu ,&nbsp;Xiaoping Li ,&nbsp;Shoubiao Zhou","doi":"10.1016/j.eti.2025.104098","DOIUrl":"10.1016/j.eti.2025.104098","url":null,"abstract":"<div><div>This study examined the effects of three exogenous plant growth regulators on the resistance physiology of <em>Cinnamomum camphora</em> (<em>C. camphora</em>) seedlings and their cadmium (Cd) absorption and transport under Cd stress. To this end, the efficacies of several plant growth regulators in the remediation of Cd-polluted soil were compared. This paper also provides a theoretical foundation for the ecological restoration of <em>C. camphora</em> and the incorporation of plant growth regulators in mining-abandoned and industrially polluted lands. The findings revealed that the application of 20 mg kg^–1 3-indole acetic acid (IAA), gibberellin (GA₃), and 6-benzylaminopurine (6-BA) facilitated plant growth and enhanced the photosynthesis of <em>C. camphora</em> seedlings. Furthermore, the antioxidant capacity of <em>C. camphora</em> seedlings was improved: the superoxide dismutase activity decreased by 1.0 %, 11.7 %, and 24.4 %. Similarly, the ascorbic acid content decreased by 39.0 %, 17.9 %, and 22.2 %, respectively. These changes effectively boosted the ability of <em>C. camphora</em> seedlings to restore Cd-contaminated soil, consequently promoting Cd accumulation in plant organs and lowering soil Cd residue by 30.8 %, 12.9 %, and 18.1 %, respectively. The treatments also enabled Cd accumulation in the aboveground and underground parts of the seedlings, effectively increasing their resistance against Cd. These results demonstrate that applying plant growth regulators is a promising approach for strengthening phytoremediation in contaminated soils.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"38 ","pages":"Article 104098"},"PeriodicalIF":6.7,"publicationDate":"2025-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143478929","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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}

{"title":"Biochar-based urea enhances nitrogen use efficiency and mitigates nitrogen leaching in greenhouse vegetable production","authors":"Ruiying Guo ,&nbsp;Wange Gong ,&nbsp;Shuai Qi ,&nbsp;Jianhui Xu ,&nbsp;Zhanhuan Shang ,&nbsp;Stephen Joseph","doi":"10.1016/j.eti.2025.104104","DOIUrl":"10.1016/j.eti.2025.104104","url":null,"abstract":"<div><div>The sustainable development of greenhouse vegetable systems relies on enhancing nitrogen use efficiency (NUE) and minimizing nitrogen losses, especially leaching losses. Biochar-based fertilizers (BBFs) offer a promising solution to these challenges. This study addresses the research gap in biochar-based nitrogen fertilizers by developing granular biochar-based urea (BU), which integrates urea, biochar, and attapulgite for use in greenhouse vegetable production. ¹⁵N isotope microlysimeter experiments were performed to compare the effects of BU and traditional urea on garland chrysanthemum yields, N leaching and ¹⁵N recovery at different application rates (380, 310 and 190 mg N/kg soil). BU applciation significantly enhanced the fresh yield and dry matter content of garland chrysanthemum by 25.1 % and 22.8 %, respectively, compared to urea treatment. BU application also improved overall plant ¹⁵N recovery by 94.6 %. However, plant ¹⁵N recovery decreased as the N application rate increased. In the 0–0.4 m soil layer, the ¹⁵N recovery of BU ranged from 31.1 % to 35.3 %, compared to 19.2–28.3 % for urea-N. High urea-N application reduced soil ¹⁵N recovery, while BU increased it. BU application notably decreased inorganic N leaching and unaccounted ¹⁵N losses by an average of 35.2 % and 76.0 % compared with urea treatment. At the same N application rate (380 mg N kg⁻¹), the coapplication of biochar and urea reduced both plant and soil ¹⁵N recovery and increased ¹⁵N loss compared with those of BU application. This research highlights the potential of biochar-based urea fertilizers as a sustainable alternative to conventional chemical fertilizers in greenhouse production.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"38 ","pages":"Article 104104"},"PeriodicalIF":6.7,"publicationDate":"2025-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143478927","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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}

{"title":"Low nitrogen MICP remediation of Pb contaminated water by multifunctional microbiome UN-1","authors":"He-Wei Song ,&nbsp;Jia-Qi Sha ,&nbsp;Shu-He Wei ,&nbsp;Jing An","doi":"10.1016/j.eti.2025.104097","DOIUrl":"10.1016/j.eti.2025.104097","url":null,"abstract":"<div><div>Microbial induced carbonate precipitation (MICP), is an efficient remediation method for Pb^2 + polluted water proposed in recent years. However, the NH₄⁺-N produced during MICP process is an important challenge for this method. To solve this problem, our study prepared a multifunctional microbiome UN-1 with both function of MICP and NH₄⁺-N degradation, revealed the Pb²⁺ removal and the NH₄⁺-N degradation rule of UN-1, characterized the morphology and composition of PbCO₃ from MICP, and clarified the influence factor on MICP reaction. Through this study, the following conclusions are drawn: UN-1 contains MICP model bacteria <em>Sporosarcina</em> (24.35 %) and NH₄⁺-N degrading model bacteria <em>Nitrospira</em> (11.09 %). UN-1-mediated MICP completely remove Pb²⁺ with c(Pb²⁺) &lt; 200 mg/L, and the concentration of NH₄⁺-N decreased to less than 50 mg/L after 120 h. The degradation of NH₄⁺-N by UN-1 undergoes nitrification and denitrification and is regulated by a variety of nitrogen degrading enzymes. The MICP products are irregular cubes mineral with single crystal structure developed with a long axial length of 200–300 nm and short axial 100–150 nm. The crystal faces of (132), (112), (200), (202) and (313) of mineral are developed, and the XRD and XPS patterns are consistent with the mineral characteristics of PbCO₃. The optimal pH value and temperature range of UN-1-mediated MICP are 5.0–9.0 and 20–40℃. NH₄⁺-N concentration can maintain a low level under most pH and temperature conditions. Our study proposes a new method for resolving NH₄⁺-N generated during MICP, which will remove obstacles for the practical application of MICP technology.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"38 ","pages":"Article 104097"},"PeriodicalIF":6.7,"publicationDate":"2025-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143463610","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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}

{"title":"Nanoparticles as modulators of stress tolerance: Physiological and molecular insights into TiO₂ and ZnO effects in Cucumis melo L. subjected to salt shock","authors":"Lorena Albaladejo-Marico ,&nbsp;Afwa Thameur ,&nbsp;Antonio Garcia-Martinez ,&nbsp;Micaela Carvajal ,&nbsp;Lucia Yepes-Molina","doi":"10.1016/j.eti.2025.104101","DOIUrl":"10.1016/j.eti.2025.104101","url":null,"abstract":"<div><div>Nanoparticles (NPs) have emerged as innovative tools in agriculture to enhance plant productivity and stress tolerance under challenging conditions. This study aimed to evaluate the short-term effects of TiO₂ and ZnO-NPs on melon plants (<em>Cucumis melo L.</em>) under control and salt stress shock conditions. Plants were treated with NPs via root application in hydroponically system, and physiological, biochemical, and molecular responses were analysed. TiO₂-NPs increased biomass, enhanced water potential, and the maintained photosynthetic efficiency during salt shock. In contrast, ZnO-NPs did not promote growth but triggered protective responses, including reduced lipid peroxidation and improved membrane stability. Transmission electron microscopy confirmed NPs localization in root and leaves, primarily near membranes and within vacuoles, suggesting their involvement in transport and redistribution mechanisms. NPs up-regulated root aquaporins, particularly <em>CmNIP5;1</em>, correlating with improved water transport and potential. TiO₂-NPs enhanced Fe redistribution in leaves, while ZnO-NPs reduced Cu levels and triggered an increase in Ca under salinity. Additionally, TiO₂-NPs promoted phenolic compound accumulation, enhancing antioxidant defences, whereas ZnO-NPs reduced these metabolites. In conclusion, TiO₂ and ZnO-NPs modulate key physiological and biochemical responses, improving stress tolerance and nutrient dynamics. These findings highlight their potential as innovative tools for sustainable agriculture and warrant further investigation into their mechanisms of action.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"38 ","pages":"Article 104101"},"PeriodicalIF":6.7,"publicationDate":"2025-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143479044","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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}

{"title":"Low-cost preparation of ethylene glycol-modified micro-nano porous calcium carbonate with excellent removal of Cadmium in wastewater","authors":"Xuehong Zhang ,&nbsp;Ming Wang ,&nbsp;Jinyun He ,&nbsp;Fei Long ,&nbsp;Yanwu Wang","doi":"10.1016/j.eti.2025.104105","DOIUrl":"10.1016/j.eti.2025.104105","url":null,"abstract":"<div><div>Contamination, migration, and bioaccumulation of cadmium ion [Cd(II)] in aquatic environments seriously threaten human health and ecological systems. Although eliminating Cd(II) via an adsorption process is a promising strategy, developing cost-effective, efficient, and eco-friendly adsorbents, particularly those enabling safe cadmium disposal, remains a huge challenge. In this work, a novel adsorbent, ethylene glycol - modified micro-nano porous calcium carbonate (EG-NCaC), is fabricated from natural limestone via a mechanical activation-calcination-precipitation process. Compared to the traditional NCaC, both grain sizes and aggregation of the EG-NCaC (50–150 nm) can be reduced. When EG-NCaC with 1.0 g L⁻¹ is applied for simulated wastewater treatment (concentration: 50 mg L⁻¹ pH: 6.0), the removal efficiency of Cd(II) reached 98.90 % after 60 min adsorption. Adsorption isotherm matched well with the Langmuir model, with the maximum theoretical Cd(II) adsorption capacity (<em>q</em>_<em>m</em>) of 75.20 mg g⁻¹ at 298 K. Kinetic studies are fitted well with pseudo-first-order and pseudo-second-order models. The Elovich model proves that Cd(II) can be adsorbed rapidly by the EG-NCaC in the initial adsorption and strong Cd(II) binding. Intra-particle diffusion analysis suggested that the adsorbed Cd(II) can be transported to the inner EG-NCaC via pore diffusion until equilibrium. However, coexisting ions and organic impurity significantly affected adsorption efficiency. Furthermore, conventional acid-base post-treatment processes were inappropriate for the recycle application of the EG-NCaC, whereas the Cd(II)-saturated adsorbent can be utilized as ceramic additives. This study provides valuable theoretical and technical insights for the effective removal of Cd(II) from aquatic environments and the safe disposal of cadmium.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"38 ","pages":"Article 104105"},"PeriodicalIF":6.7,"publicationDate":"2025-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143510187","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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}