Environmental Technology & Innovation最新文献_第5页

MXene-based aqueous ethanolamine nanosuspension as new class of CO2 absorption media mxeni基乙醇胺纳米悬浮液作为新型CO2吸收介质

IF 6.7 2区环境科学与生态学

Environmental Technology & Innovation Pub Date : 2025-06-03 DOI: 10.1016/j.eti.2025.104304

A. Arifutzzaman , Nur Azni Farhana Mazri , Mohamed Kheireddine Aroua , Mohd Azlan Kassim

{"title":"MXene-based aqueous ethanolamine nanosuspension as new class of CO2 absorption media","authors":"A. Arifutzzaman , Nur Azni Farhana Mazri , Mohamed Kheireddine Aroua , Mohd Azlan Kassim","doi":"10.1016/j.eti.2025.104304","DOIUrl":"10.1016/j.eti.2025.104304","url":null,"abstract":"<div><div>In this study, for the first time, MXene-monoethanolamine (MEA) nanofluid was employed to enhance carbon dioxide (CO₂) absorption capacity. MXene's 2D structure provides a large surface area and tunable surface chemistry, facilitating CO₂ adsorption and improving its overall absorption efficiency. The MXene nanoparticles were characterized using high-resolution transmission electron microscopy (HRTEM), X-ray diffraction (XRD), Brunauer–Emmett–Teller (BET) surface area analysis, Fourier-transform infrared spectroscopy (FTIR), and X-ray photoelectron spectroscopy (XPS). The nanoparticles were then dispersed in an aqueous MEA solution at specified concentrations using ultrasonication. The density and viscosity of the nanofluids were also measured. The effects of MXene incorporation on CO₂ loading were systematically evaluated. Experiments were conducted at 25 °C and 50–150 psi to assess CO₂ absorption under elevated pressure conditions. CO₂ absorption increased with MXene concentration until an optimum of 0.1 vol% was reached. The highest enhancement of approximately 23 % was observed at 150 psi. This improvement is attributed to MXene’s ability to disrupt the gas-liquid interface, reduce bubble coalescence, and increase the effective contact area, thereby enhancing mass transfer efficiency. These findings suggest that MXene-MEA nanofluids could improve industrial CO₂ capture efficiency, paving the way for more effective carbon mitigation strategies.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"39 ","pages":"Article 104304"},"PeriodicalIF":6.7,"publicationDate":"2025-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144220814","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Magnetic supramolecular solvents: An efficient tool for extraction and photocatalytic degradation of dyes in textile wastewater 磁性超分子溶剂：一种萃取及光催化降解纺织废水染料的有效工具

IF 6.7 2区环境科学与生态学

Environmental Technology & Innovation Pub Date : 2025-06-02 DOI: 10.1016/j.eti.2025.104311

Lourdes Algar, María Dolores Sicilia, Soledad Rubio

{"title":"Magnetic supramolecular solvents: An efficient tool for extraction and photocatalytic degradation of dyes in textile wastewater","authors":"Lourdes Algar, María Dolores Sicilia, Soledad Rubio","doi":"10.1016/j.eti.2025.104311","DOIUrl":"10.1016/j.eti.2025.104311","url":null,"abstract":"<div><div>The textile industry produces wastewater containing high levels of toxic dyes, which need to be removed before being discharged into the environment. In this study, supramolecular solvents (SUPRAS) with unique properties (magnetism, photocatalytic activity, nanostructures irreversibility, multiple polar/apolar/ionic binding sites, and reusability) were first developed for the simultaneous removal of neutral and charged dyes from textile effluents. The SUPRASs were synthesized using undecylenate oligomers as the basic unit for both chemisorption on magnetic iron oxide nanoparticles (MNPs) and coacervation induced by tetraalkylammonium salts. The tetrahexylammonium-induced magnetic SUPRASs showed an exceptional capability for the simultaneous extraction of cationic, anionic and neutral dyes under a wide range of experimental conditions (pH 3–9; NaCl 0.05–1 M; dye 10–250 mg L<sup>−1</sup>), at V<sub>SUPRAS</sub>/V<sub>water</sub> ratios as low as 0.0025. The SUPRASs showed the same extraction efficiency for dyes in synthetic textile effluents (e.g. 98.9 % for acid red 88). The supramolecular aggregates making up the SUPRAS were highly stable; no residual oligomer or tetrahexylammonium ion were present in the treated water. The SUPRASs extracts containing the dyes were magnetically separated and subjected to UV light irradiation for dye degradation. Up to 97 % of acid red 88 was effectively degraded in the SUPRAS extract. Both dye extraction and degradation were virtually complete for at least three consecutive cycles using the SUPRAS, with no need for regeneration treatment. This research presents an innovative extraction-photocatalytic approach for efficiently removing dyes from textile wastewater that can easily be scaled up without raising environmental or health concerns.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"39 ","pages":"Article 104311"},"PeriodicalIF":6.7,"publicationDate":"2025-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144220963","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Modeling spatiotemporal hotspots and impact of cobalt contamination in European soils 欧洲土壤中钴污染的时空热点及其影响模拟

IF 6.7 2区环境科学与生态学

Environmental Technology & Innovation Pub Date : 2025-06-01 DOI: 10.1016/j.eti.2025.104307

Chongchong Qi , Kechao Li , Tao Hu , Qiusong Chen , Zhang Lin , Liyuan Chai

{"title":"Modeling spatiotemporal hotspots and impact of cobalt contamination in European soils","authors":"Chongchong Qi , Kechao Li , Tao Hu , Qiusong Chen , Zhang Lin , Liyuan Chai","doi":"10.1016/j.eti.2025.104307","DOIUrl":"10.1016/j.eti.2025.104307","url":null,"abstract":"<div><div>Soil cobalt contamination poses severe environmental and health risks. However, large-scale spatiotemporal variations in soil cobalt concentration remain poorly understood. Here, an attention-based deep learning model and four machine learning models were developed to generate cobalt concentration maps from soil spectra, covering European soils in 2009 and 2015. The dataset in 2009 comprised 18,675 samples, while the dataset in 2015 included 21,782 sample points. The deep learning model exhibited the optimal performance, with a mean squared error of 0.293, a mean absolute error of 0.146, and a coefficient of determination of 0.688, indicating robust predictive accuracy and model fit. Southern Europe, including Greece and Italy, had the highest soil cobalt concentrations. The validated model uncovered a significant increase in cobalt concentrations between 2009 and 2015, rising from a mean of 5.58 mg/kg to 10.49 mg/kg (P < 0.0001). Soil cobalt contamination (concentrations >20 mg/kg) was mainly found in Poland, Germany, and Italy in 2015, with Poland experiencing the largest increase. The model predicted that 1.5 million tons of crops produced and 12.3 million European people may have been potentially affected by cobalt contamination in 2015. This model can help identify regions requiring vigorous soil-remediation measures, while also raising awareness about reversing soil cobalt contamination.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"39 ","pages":"Article 104307"},"PeriodicalIF":6.7,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144220962","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Integrating optimal fertilizer placement strategy and row configuration for high yield, high economic benefits and fewer environmental footprints in direct-seeded rice 综合优化施肥策略和行形，实现水稻高产、高经济效益和低环境足迹

IF 6.7 2区环境科学与生态学

Environmental Technology & Innovation Pub Date : 2025-06-01 DOI: 10.1016/j.eti.2025.104309

Bin Wang , Solomon Yokamo , Xiaoqin Chen , Yiliu Wang , Muhammad Irfan , Xinyuan Lu , Yujie Zha , Dianjun Lu , Xiaoqi Jin , Huoyan Wang

{"title":"Integrating optimal fertilizer placement strategy and row configuration for high yield, high economic benefits and fewer environmental footprints in direct-seeded rice","authors":"Bin Wang , Solomon Yokamo , Xiaoqin Chen , Yiliu Wang , Muhammad Irfan , Xinyuan Lu , Yujie Zha , Dianjun Lu , Xiaoqi Jin , Huoyan Wang","doi":"10.1016/j.eti.2025.104309","DOIUrl":"10.1016/j.eti.2025.104309","url":null,"abstract":"<div><div>Conventional multi-split nitrogen (N) application by broadcasting (CSB) often leads to reduced yields and lower nitrogen use efficiency (NUE) in direct-seeded rice. One-time root zone targeted fertilization (ORZTF) has been suggested as an effective alternative to improve grain yields and NUE. However, the optimal fertilization distance and its systematic impacts on productivity and environmental sustainability under ORZTF in direct-seeded rice remain unexplored. To address this, two field experiments were conducted at Huanghai Farm in Jiangsu Province. The first experiment (2021–2022) evaluated the effects of ORZTF at key distances (10 cm, 14 cm, 18 cm, and 22 cm) on yield and NUE. The second experiment (2021 −2023) assessed an alternative row (AR) fertilization approach, rigorously evaluating ORZTF’s effects on yield, economic viability, and environmental impact. Results demonstrated that ORZTF at 14 cm achieved the highest yield by maintaining productive tiller numbers, chlorophyll content, and enhancing N uptake compared to CSB. Additionally, the AR approach based on a 14 cm distance increased average yield by 6.8 % over three years by improving root development and raised net economic benefits by 12.6 %. Furthermore, every-row (ER) fertilization significantly boosted <sup>15</sup>N accumulation in plants and soil by 76.9 % and 48.9 %, respectively, while reducing potential <sup>15</sup>N loss by 39.5 % compared to CSB. Both ER and AR minimized N concentrations in floodwater and reduced ammonia volatilization (NH<sub>3</sub>) to levels comparable to no-N treatment. In summary, optimizing fertilizer placement intervals and row configuration can enhance yields, economic benefits, and environmental sustainability in direct-seeded rice.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"39 ","pages":"Article 104309"},"PeriodicalIF":6.7,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144254690","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Complete degradation of 3-amino-1,2,4-triazol-5-one (ATO) by manganese oxide 氧化锰完全降解3-氨基-1,2,4-三唑-5-酮（ATO）

IF 6.7 2区环境科学与生态学

Environmental Technology & Innovation Pub Date : 2025-06-01 DOI: 10.1016/j.eti.2025.104308

Mitchell P. Miller , Robert A. Root , Reyes Sierra-Alvarez , Jon Chorover , Jim A. Field

{"title":"Complete degradation of 3-amino-1,2,4-triazol-5-one (ATO) by manganese oxide","authors":"Mitchell P. Miller , Robert A. Root , Reyes Sierra-Alvarez , Jon Chorover , Jim A. Field","doi":"10.1016/j.eti.2025.104308","DOIUrl":"10.1016/j.eti.2025.104308","url":null,"abstract":"<div><div>Insensitive high-explosive compounds like 3-nitro-1,2,4-triazol-5-one (NTO) can contaminate soil and water at military sites. This study compared the ability of synthesized and commercial MnO<sub>2</sub> materials to degrade the reduced daughter product of NTO, 3-amino-1,2,4-triazol-5-one (ATO), and characterized the solid-phase transformations that govern the products formed in continuous-flow reactors. Synthetic birnessite degraded ATO fastest (<em>k</em> = 15.0 h<sup>−1</sup>) but had poor hydraulic characteristics. Whereas the commercial material Pro-OX™️ had a good degradation rate (<em>k</em> = 0.64 h<sup>−1</sup>) and its granular morphology ensured good hydraulic performance. Results show ATO is oxidized by MnO<sub>2</sub>-type minerals to benign end-products (urea, NH<sub>4</sub><sup>+,</sup> CO<sub>2(g)</sub>, and N<sub>2(g)</sub>). Spent Mn oxides were fully regenerated using KMnO<sub>4</sub> or NaOCl, restoring or even surpassing their original oxidative capacity. Further investigation of Pro-OX in packed-bed columns under a simulated wastewater treatment regime (1 mM ATO, empty bed contact time [EBCT]= 1 h) showed that the column reached breakthrough (C/C<sub>0</sub> ≥ 0.05) at 2400 pore volumes (PVs), with a capacity to degrade 190 mg ATO g<sup>−1</sup>. Under accelerated groundwater flow regime (0.1 mM ATO, EBCT= 24 h), the reactor removed ATO effectively for the duration of operation (660 PVs). After reacting with ATO, the Mn oxide material initially dominated by Mn<sup>(IV)</sup> (e.g., pyrolusite, ramsdellite, todorokite) was converted to Mn<sup>(III)</sup> minerals (e.g., groutite, manganite) and soluble Mn<sup>(II)</sup> (recovered in effluent) indicating reduction of MnO<sub>2</sub> concurrent with ATO oxidation. Collectively, these findings demonstrate that MnO<sub>2</sub> is a promising material for application in permeable reactive barriers or packed-bed filters to treat waters contaminated with ATO at military sites.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"39 ","pages":"Article 104308"},"PeriodicalIF":6.7,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144204204","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Enhancing leafy green vegetable growth and quality through the foliar application of copper oxide nanoparticles 通过叶面施用氧化铜纳米颗粒促进绿叶蔬菜生长和品质

IF 6.7 2区环境科学与生态学

Environmental Technology & Innovation Pub Date : 2025-06-01 DOI: 10.1016/j.eti.2025.104310

Shang Gao , Heping Shang , Chaoyi Deng , Ian Eggleston , Jason C. White , Masoud Hashemi , Yi Wang , Baoshan Xing

{"title":"Enhancing leafy green vegetable growth and quality through the foliar application of copper oxide nanoparticles","authors":"Shang Gao , Heping Shang , Chaoyi Deng , Ian Eggleston , Jason C. White , Masoud Hashemi , Yi Wang , Baoshan Xing","doi":"10.1016/j.eti.2025.104310","DOIUrl":"10.1016/j.eti.2025.104310","url":null,"abstract":"<div><div>The application of nanotechnology to enhance crop yield has garnered growing interest. The present work investigated the effects of copper oxide nanoparticles (CuO NPs) on the development of Chinese cabbage (<em>Brassica pekinensis</em> (Lour.) Rupr.) and spinach (<em>Spinacia oleracea</em> L.). In the greenhouse study, upon a foliar treatment with CuO NPs (80 mg/L), the fresh shoot biomass of Chinese cabbage and spinach was significantly increased by 29.06 % and 26.34 % respectively, compared to the untreated control. Meanwhile, no significant differences were observed between the foliar treatments with CuSO<sub>4</sub>, bulk CuO, and the untreated control. Notably, CuO NPs enhanced the concentrations of Fe, Mg, and Zn by 112.3 %, 37.9 %, and 36.5 % in Chinese cabbage, and 59.4 %, 30.3 %, 15.4 % in spinach, and increased the levels of organic compounds such as vitamin C and carotene in leaves by 51.89 % and 42.24 % as compared to the untreated control, which are beneficial for human health. Compared to the untreated control, the concentration of carotene in spinach leaves increased by 42.24 %, and the concentration of vitamin C in Chinese cabbage leaves increased by 51.89 %. Taken together, our findings provide valuable information and an approach for improving the yield and quality of leafy green vegetables.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"39 ","pages":"Article 104310"},"PeriodicalIF":6.7,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144220964","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Enhancing water retention performance of biochar modified by alkali-treated coal fly ash: Pyrolysis behavior, field simulation, and metal leaching assessment 碱处理粉煤灰改性生物炭提高保水性能：热解行为、现场模拟和金属浸出评价

IF 6.7 2区环境科学与生态学

Environmental Technology & Innovation Pub Date : 2025-06-01 DOI: 10.1016/j.eti.2025.104306

Pu Yang , Hao Xu , Mengzhu Yu , Kanokwan Yamsomphong , M Ismail Bagus Setyawan , Fumitake Takahashi

{"title":"Enhancing water retention performance of biochar modified by alkali-treated coal fly ash: Pyrolysis behavior, field simulation, and metal leaching assessment","authors":"Pu Yang , Hao Xu , Mengzhu Yu , Kanokwan Yamsomphong , M Ismail Bagus Setyawan , Fumitake Takahashi","doi":"10.1016/j.eti.2025.104306","DOIUrl":"10.1016/j.eti.2025.104306","url":null,"abstract":"<div><div>Biochar, produced from biomass pyrolysis, is widely recognized as an effective soil amendment due to its ability to enhance soil water retention capacity. To further improve biochar’s performance, catalytic pyrolysis using coal fly ash (CFA), as a low-cost and promising additive owing to its containing catalytically active minerals, was explored in this study. CFA was expected to enhance pyrolysis efficiency and serve as a soil conditioner. Raw CFA (RCFA) and KOH-modified CFA (KC11) were tested in pyrolysis of rice straw. The addition of KC11 reduced the apparent activation energy (166.19 KJ/mol) of RS pyrolysis and promoted gas production (2.14 ± 0.3 g), while RCFA increased liquid yields. Heavy metal leaching tests suggested minimal environmental risk associated with the application of biochar. The modification increased the potassium content in biochar and enhanced its water retention properties. Notably, while specific surface area (SSA) and hydrophilic functional groups may not be dominant in soil water retention. Soils amended with KC11-derived biochar (B-KC11) extended the first evaporation stage (12.3–19.3 h) and exhibited the highest evaporation mitigation capacity (EMC) (1115.66 hr), which represents the ability to mitigate physical evaporative water loss. A field simulation based on experimental water evaporation profiles confirmed the temperature-dependent benefits of biochar application, and evaporation could be reduced by up to 30.32 % in biochar-amended soil. Overall, this study demonstrates that CFA, particularly in its alkali-modified form, can serve as an effective catalyst and soil amendment, offering a sustainable strategy to enhance biochar’s water retention capacity and agronomic value.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"39 ","pages":"Article 104306"},"PeriodicalIF":6.7,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144220965","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Trisynergy of photosynthetic biogas upgrading, anaerobic digestate bioremediation, and pigment biosynthesis 光合沼气升级、厌氧消化生物修复和色素生物合成的三协同作用

IF 6.7 2区环境科学与生态学

Environmental Technology & Innovation Pub Date : 2025-05-30 DOI: 10.1016/j.eti.2025.104305

Viktoriia Komarysta , Silvia Bolado Rodriguez , Raúl Muñoz Torre

{"title":"Trisynergy of photosynthetic biogas upgrading, anaerobic digestate bioremediation, and pigment biosynthesis","authors":"Viktoriia Komarysta , Silvia Bolado Rodriguez , Raúl Muñoz Torre","doi":"10.1016/j.eti.2025.104305","DOIUrl":"10.1016/j.eti.2025.104305","url":null,"abstract":"<div><div>Integrating environmental biotechnologies with valuable product biosynthesis can enhance the economic feasibility of environmental protection while reducing the costs of bioactive compound production. This study presents the first proof of concept for photosynthetic biogas upgrading and nutrient removal from anaerobic digestate, coupled with pigment biosynthesis in algae and cyanobacteria cultures. Pre-cultivation with aerobic activated sludge mitigated the toxicity of NH<sub>4</sub><sup>+</sup> from the liquid fraction of anaerobic digestate and H<sub>2</sub>S from biogas, protecting pigment-producing strains. Partial pre-nitrification of NH<sub>4</sub><sup>+</sup> followed by complete H<sub>2</sub>S pre-oxidation with aerobic activated sludge supported the growth of <em>Chlorella</em> sp. and <em>Coelastrella</em> sp., while <em>Arthrospira platensis</em> required complete pre-nitrification to grow with both clean and H<sub>2</sub>S-laden biogases. In the liquid fraction of anaerobic digestate, sulfur supplementation via H<sub>2</sub>S-laden biogas stimulated the propagation of all cultures. Under these conditions, the complete removal of H<sub>2</sub>S by aerobic activated sludge was recorded, while final CO<sub>2</sub> levels of 6.0 %, 2.4 %, and 0.07 % were observed in <em>Chlorella</em> sp., <em>Coelastrella</em> sp., and <em>A. platensis</em> tests, correspondingly. <em>Chlorella</em> sp. and <em>Coelastrella</em> sp., respectively, removed 79 and 70 % nitrogen and 64 and 65 % of phosphorus under clean biogas, while <em>A. platensis</em> achieved 82 % nitrogen and 73 % phosphorus removals under pre-desulfurized H<sub>2</sub>S-laden biogas. These findings support the development of efficient cultivation strategies for biogas upgrading and the remediation of the liquid fraction of anaerobic digestate using pigment-producing strains.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"39 ","pages":"Article 104305"},"PeriodicalIF":6.7,"publicationDate":"2025-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144189870","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Dual-functional remediation of ammonia nitrogen contamination in ionic rare earth mines: Efficient washing and soil stabilization using lignosulfonates 离子稀土矿氨氮污染的双功能修复：木质素磺酸盐的高效洗涤和土壤稳定

IF 6.7 2区环境科学与生态学

Environmental Technology & Innovation Pub Date : 2025-05-29 DOI: 10.1016/j.eti.2025.104297

Chunfu Kang , Jiahao Pan , Yuxia Luo , Xinyi Xie , Youwei Yang , Zhiqiang Zou , Xuefu Zhao , Ming Chen , Chunying Wang

{"title":"Dual-functional remediation of ammonia nitrogen contamination in ionic rare earth mines: Efficient washing and soil stabilization using lignosulfonates","authors":"Chunfu Kang , Jiahao Pan , Yuxia Luo , Xinyi Xie , Youwei Yang , Zhiqiang Zou , Xuefu Zhao , Ming Chen , Chunying Wang","doi":"10.1016/j.eti.2025.104297","DOIUrl":"10.1016/j.eti.2025.104297","url":null,"abstract":"<div><div>Ammonia nitrogen (NH₄⁺-N) pollution from in-situ leaching of ionic rare earth mines poses severe ecological risks, including soil acidification and groundwater contamination. This study proposes a novel dual-functional strategy using lignosulfonates—calcium lignosulfonate (CLS) and sodium lignosulfonate (SLS)—to simultaneously remove NH₄⁺-N and stabilize soil structure. Batch and column experiments revealed that CLS washed 297.70 mg NH₄⁺-N (compared to 170.23 mg by water washing) from simulated contaminated soil, while SLS removed 306.79 mg. Kinetic modeling using the Elovich and Two-constant equations (<em>R</em>² = 0.910–0.941) indicated that NH₄⁺-N removal was primarily governed by heterogeneous diffusion and cation exchange processes. CLS outperformed SLS in soil stabilization, increasing shear strength by 114 % and reducing soil porosity by 49.40 % through particle aggregation. Field-collected soil experiments validated CLS's robust performance, achieving > 91 % removal of exchangeable NH₄⁺-N while maintaining a neutral pH (7.54 compared to SLS-induced pH 10.08), avoiding secondary alkalization risks. Mechanistic analysis highlighted Ca²⁺-mediated ion exchange, electrostatic interactions with sulfonic groups, and hydrogen bonding as key pathways. This work provides a sustainable solution leveraging industrial byproducts (lignosulfonates) for eco-friendly mine remediation, aligning with circular economy principles.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"39 ","pages":"Article 104297"},"PeriodicalIF":6.7,"publicationDate":"2025-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144204201","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Green Technology Transfer for Firms in a Multi-layer Network Perspective: The Dual Impact of Knowledge Resources and Regional Environment 多层网络视角下的企业绿色技术转移：知识资源和区域环境的双重影响

IF 6.7 2区环境科学与生态学

Environmental Technology & Innovation Pub Date : 2025-05-29 DOI: 10.1016/j.eti.2025.104291

Xiaoyi shi , Feixue Sui , Xiaoxia Huang

{"title":"Green Technology Transfer for Firms in a Multi-layer Network Perspective: The Dual Impact of Knowledge Resources and Regional Environment","authors":"Xiaoyi shi , Feixue Sui , Xiaoxia Huang","doi":"10.1016/j.eti.2025.104291","DOIUrl":"10.1016/j.eti.2025.104291","url":null,"abstract":"<div><div>Green technology transfer has become a critical approach for energy conservation and emission reduction. This study examines how micro-level knowledge resources and macro-level regional environments jointly influence firms' green technology transfer processes. Drawing on social network theory, resource-based theory, and regional innovation system theory, this study constructs a multi-layer network model that integrates knowledge elements, firms, and cities. We employ the Exponential Random Graph Model (ERGM) to analyze the mechanisms influencing inter-firm green technology transfer. The findings show that, at the micro level, knowledge diversity promotes technology adoption but hinders technology output; specialized knowledge enhances technology adoption; firms' knowledge combined potential and knowledge uniqueness weaken their ability to absorb external technology but facilitate outbound technology transfer. At the macro level, geographical distance significantly hinders technology transfer. In summary, firms' green technology transfer is constrained by both knowledge resources and geographical proximity. This study provides a theoretical foundation for enterprises to optimize knowledge management strategies and for policymakers to enhance technology transfer support systems. By integrating micro-level knowledge resource systems and macro-level regional environments into a unified network model, the study overcomes the limitations of traditional single-level analyses and broadens the scope of technology transfer research by incorporating a multidimensional perspective.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"39 ","pages":"Article 104291"},"PeriodicalIF":6.7,"publicationDate":"2025-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144167281","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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}

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