Environmental Technology & Innovation最新文献

{"title":"Retention of per- and polyfluoroalkyl substances (PFAS) and influencing factors by conventional and modified constructed wetlands treating municipal wastewater effluent","authors":"Luca M. Ofiera ,&nbsp;Thomas Wintgens ,&nbsp;Christian Kazner","doi":"10.1016/j.eti.2025.104319","DOIUrl":"10.1016/j.eti.2025.104319","url":null,"abstract":"<div><div>Per- and polyfluoroalkyl substances (PFAS) are a broadly applied group of fluorinated compounds that are characterised by extreme persistence and environmental toxicity. Conventional wastewater treatment plants (WWTPs) are designed to remove oxygen-depleting compounds, as well as nutrients, but lack the specific capabilities to effectively remove PFAS. Nature-based solutions are an established technology to further treat WWTP effluent and are gaining attention for the removal of PFAS. However, significant knowledge gaps remain regarding the ability of constructed wetlands (CWs) to remove PFAS and the mechanisms involved. This study investigated the occurrence of 11 PFAS in a conventional WWTP effluent and the efficacy of PFAS removal in a conventional vertical subsurface flow CW and four different CWs modified by biochar, granular activated carbon (GAC) and natural zeolite. The average concentration of the 11 selected PFAS in the WWTP effluent was 177 ± 83 ng/L, with the highest levels observed for 6:2-fluorotelomersulfonic acid (H4-PFOS) at 72 ± 46 ng/L and perfluorohexanoic acid (PFHxA) at 28 ± 7 ng/L. The results indicate that modified CWs that incorporate biochar, GAC, and natural zeolite are significantly more effective in removing bulk organics, nitrate, phosphate, and PFAS from municipal wastewater. While long-chain PFAS ≥ 8 C-atoms were partly retained in the conventional (5–59 %) and the zeolite-containing wetland (39–76 %), shorter PFAS exhibited negative removal. The combined adsorbent CW demonstrated the highest removal rates below the limit of quantification (LOQ) across all sampling campaigns due to synergistic effects of enhanced water retention, adsorption and ion exchange.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"39 ","pages":"Article 104319"},"PeriodicalIF":6.7,"publicationDate":"2025-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144281016","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}

{"title":"Screening lentil genotypes for chromium resilience: A study of growth characteristics, oxidative stress responses, and expression analysis","authors":"Fawad Ali ,&nbsp;Yiren Zhao ,&nbsp;Shah Zeb ,&nbsp;Obaid Ullah Shah ,&nbsp;Mian Abdur Rehman Arif ,&nbsp;Arif Ali ,&nbsp;Li Liao ,&nbsp;Zhiyong Wang","doi":"10.1016/j.eti.2025.104318","DOIUrl":"10.1016/j.eti.2025.104318","url":null,"abstract":"<div><div>Plants face environmental challenges from the deposition of heavy metals in soil that hinder growth and compromise yield. Despite the significant losses caused by chromium (Cr) stress, the development of efficient screening methods, as well as the identification of tolerant lentil germplasm and resistance genes remains inadequate. To tackle this, we screened 200 lentil genotypes for Cr tolerance at the seedling stage using a completely randomized block design with three replications under hydroponic condition. The results showed significant genetic diversity among the genotypes, with reductions in morphological traits under Cr stress ranging from 5.66 % for relative water (RW) content to 58.14 % for fresh shoot (FS) weight compared to controls. Principal component analysis identified four key traits contributing to stress tolerance: fresh shoot (FS) weight (0.0657 g), dry shoot (DS) weight (0.0084 g), shoot length (SL) (8.9315 cm), and dry root (DR) weight (0.0084 g). These traits were positively correlated with each other and can serve as selection criteria for identifying elite tolerant genotypes. Genotypes were clustered into four groups, and five Cr-tolerant genotypes were selected based on a stress tolerance index (STI) value of &gt; 0.65 for all studied traits. These selected genotypes exhibited efficient antioxidant activities, indicating inherent defense mechanisms. Antioxidant enzyme levels increased significantly, except for ascorbate peroxidase (APX), which decreased compared to controls. Under Cr stress, osmolyte and antioxidant enzyme accumulation increased, while total protein and flavonoid content decreased. Cr toxicity is believed to induce oxidative damage, as evidenced by elevated antioxidant enzyme levels and reduced photosynthetic pigments. RNA-seq data analysis revealed five Cr stress tolerance genes, which were further validated through RT-qPCR. These findings suggest that the five genotypes identified could serve as potential lines for developing Cr-tolerant lentils. Additionally, the roles of five Cr stress tolerance genes warrant further investigation to better understand their functional mechanisms under Cr stress in lentils.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"39 ","pages":"Article 104318"},"PeriodicalIF":6.7,"publicationDate":"2025-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144291593","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}

{"title":"Can the plastic-eating insect Alphitobius diaperinus be used as a new biodegradation agent for synthetic plastic insulator wastes?","authors":"Chloé M.C. Richard ,&nbsp;David Renault ,&nbsp;Hervé Colinet","doi":"10.1016/j.eti.2025.104315","DOIUrl":"10.1016/j.eti.2025.104315","url":null,"abstract":"<div><div>The long lifespan and inadequate waste management of plastics are responsible for a global environmental pollution and have significant consequences for ecosystems. Several insect species are avid plastivores, as for instance Tenebrionids which can biodegrade polystyrene and polyethylene. The lesser mealworm, <em>Alphitobius diaperinus</em>, is a pest of <em>poultry farming</em> facilities where it damages isolation panels. In this study, lesser mealworms were offered four different insulating plastic materials as food source and their effects on growth, energy stores and chemical biodegradation were studied. Both larvae and adults were observed consuming plastics, but with a clear preference for polystyrene and an absence of consumption for the dense polyisocyanurate material. Polystyrene consumption was 1.9 ± 0.77 mg per larva (over 30 days) and 5.5 ± 1.7 mg per adult (over 40 days). Plastic ingestion alone did not provide sufficient nutrients to the insect resulting in mortality, body mass loss, as well as reduced body reserves (glucose and triglycerides). We demonstrated partial biodegradation of polystyrene within larvae’ and adults’ gut, as indicated by chemical modifications observed in FTIR spectra and the degradation products identified through pyrolysis GC/MS analysis. In conclusion, <em>A. diaperinus</em> demonstrated the ability to consume and partially biodegrade plastics, particularly polystyrene. However, detrimental effects on survival, body weight, and energy reserves suggested that it is unlikely to be a viable solution for biodegrading plastic wastes if fed only with polystyrene. However, when provided with other nutrients such as cereals, it could potentially serve a beneficial role.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"39 ","pages":"Article 104315"},"PeriodicalIF":6.7,"publicationDate":"2025-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144270125","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}

{"title":"Differences in N fate and net eco-economic value between common urea and humic acid urea: Combined experiments using 15N tracer and field lysimeter","authors":"Min Liu ,&nbsp;Meng Xu ,&nbsp;Jiukai Xu,&nbsp;Shuiqin Zhang,&nbsp;Yanting Li,&nbsp;Liang Yuan,&nbsp;Bingqiang Zhao","doi":"10.1016/j.eti.2025.104316","DOIUrl":"10.1016/j.eti.2025.104316","url":null,"abstract":"<div><div>Compared to the limited performance of other high-efficiency urea products, humic acid urea (HAU) increased the grain yield of winter wheat as well as of summer maize. However, the effect of adding different amounts of humic acid (HA) on the fate of urea and comprehensive economic and environmental evaluations remains unclear. Four treatments (no urea (CK), common urea (U), HAU0.5, and HAU5) were compared in a 2-year winter wheat–summer maize rotation system. Compared to U, the grain yield of HAU treatments increased by 4.48–11.25 %, regardless of crop type, planting year, or HA addition level; this was partly attributable to the increased storage of soil available N, as confirmed by a simultaneous ¹⁵N tracing microplot experiment in the first winter wheat season. HAU inhibited the loss of reactive N (NH₃ volatilization, N₂O emission, and NO₃^--N leaching loss). The C footprint based on the yield and areas calculations for HAUs was 7.01–13.48 % and 3.53–5.54 % lower than that of U, respectively. Annual environmental damage costs and annual net ecosystem economic benefits were decreased and increased by 14.89 %–19.11 % and 6.38 %–9.23 %, respectively. Few agronomic and environmental differences were found between HAU5 and HAU0.5, although the former locked more ¹⁵N nutrients in the topsoil. This combined experiment using ¹⁵N tracer and field lysimeters showed that more nutrients from HAU were absorbed by crops and converted into grains, reducing the environmental risk of greenhouse gas emissions due to the release of unused nutrients from common U into farmland.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"39 ","pages":"Article 104316"},"PeriodicalIF":6.7,"publicationDate":"2025-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144254689","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}

{"title":"Quantification of microbial community contributions to phosphorus speciation transformation in plateau lake sediments: Evidence from phosphate oxygen isotope fractionation and 16S rRNA gene sequencing","authors":"Yiwen Sang ,&nbsp;Ziteng Wang ,&nbsp;Fuhong Sun ,&nbsp;Aoping Mao ,&nbsp;Xiuyuan Chen ,&nbsp;Hong Chang ,&nbsp;Yiding Guo","doi":"10.1016/j.eti.2025.104312","DOIUrl":"10.1016/j.eti.2025.104312","url":null,"abstract":"<div><div>Understanding multiform phosphorus (P) biogeochemical cycling processes is crucial for mitigating eutrophication in aquatic environments. However, research on quantifying the contributions of different microbial genera to P migration and transformation is insufficient. This study aimed to investigate microbe-mediated P cycling processes in the sediments of a typical eutrophic lake, Dianchi, China, using 16S rRNA gene sequencing and phosphate oxygen isotope techniques. The results showed that phyla Proteobacteria, Acidobacteria, Firmicutes, and Chloroflexi were the key microbial communities influencing P cycling processes in the sediments. Phosphate oxygen isotope analysis revealed the potential proportions of external P inputs, with livestock farming (46.3 %) and P mining (30.1 %) identified as the largest contributors. Random forest analysis, used to characterize microbe-mediated fractionation processes of different P forms, revealed that microorganisms most strongly influenced H₂O-P and NaHCO₃-P, followed by NaOH-P. In contrast, their impact on the more stable HCl-P was minimal. Structural equation modeling was used to quantitatively determine the weight order of key microbial taxa as Actinobacteria &gt; Proteobacteria &gt; Acidobacteria &gt; Ignavibacteriae. Notably, environmental factors (chemical oxygen demand, total nitrogen, and dissolved oxygen) may modulate microbial community composition and metabolism, thereby indirectly regulating P cycling. A significant correlation between most environmental factors and NaHCO₃-P was observed. For example, total nitrogen contributed 14 % in NaHCO₃-P compared with 1 % in NaOH-P. This study highlights the complex interactions between microbial communities and P cycling in natural environments, providing novel insights into the microbial mechanisms of P cycling and offering a theoretical basis for managing ecological restoration in eutrophic lakes.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"39 ","pages":"Article 104312"},"PeriodicalIF":6.7,"publicationDate":"2025-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144254688","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}

{"title":"Temporal responses of DOM molecular characteristics to conversion from dryland to paddy field: Insights from soil aggregate size fractionation","authors":"Shuhe Chen ,&nbsp;Yiman Gao ,&nbsp;Xuemin Ma ,&nbsp;Dan Li ,&nbsp;Fei Fang ,&nbsp;Ying Yuan ,&nbsp;Beidou Xi ,&nbsp;Wenbing Tan","doi":"10.1016/j.eti.2025.104314","DOIUrl":"10.1016/j.eti.2025.104314","url":null,"abstract":"<div><div>Dissolved organic matter (DOM) is predominantly present within soil aggregates and its structure critically influence the environmental behavior of pollutants. However, the long-term evolution of DOM structure across aggregate sizes following dryland-to-paddy conversion remains unclear. This study examined the structure characteristics of DOM in paddy soils at land use change sequence (5, 12, 21, 29, 41, and 53 years) across different aggregate size fractions (&lt;2, 2–53, 53–250 and 250–2000 μm). Three-dimensional fluorescence spectroscopy, UV–visible spectroscopy, and elemental composition analysis were employed. The results showed that &lt; 2 μm aggregates contained protein-like, tryptophan-like, LVA-like humic substances (Longer wavelength humic-like component), humic acid-like, and LVC-like humic substances (Lower wavelength humic-like component), with &lt; 5 % variation throughout the conversion; 2–53 μm aggregates exhibited relatively uniform DOM component distribution; 53–250 μm aggregates were dominated by LVC-like humic substances and humic acid-like components (collectively 60 %); 250–2000 μm aggregates primarily contained humic acid-like and LVA-like humic substances. Spectral parameter analysis (SUVA₂₅₄, E₄/E₆, and A_240–400, S_R and HIX) elucidated the co-evolutionary dynamics of DOM structure with aggregate size fractions and land-use conversion chronology. The results demonstrated that DOM in smaller aggregates (&lt;2 μm and 2–53 μm) exhibited elevated aromaticity and stabilized humification features, while the 250–2000 μm fraction was dominated by high-molecular-weight DOM with pronounced aromaticity fluctuations across conversion stages. Two-way ANOVA confirmed significant time-size interactive effects (<em>P</em> &lt; 0.001). These findings offer new insights into DOM structure dynamics during paddy soil evolution, with implications for carbon pool management in agroecosystems.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"39 ","pages":"Article 104314"},"PeriodicalIF":6.7,"publicationDate":"2025-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144229782","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}

{"title":"Effects of nano-selenium on greenhouse gas emissions during composting: Insights into microbial subcommunities of different richness","authors":"Muqing Zhan ,&nbsp;Haochen Shao ,&nbsp;Qianting Zhuo ,&nbsp;Guangqun Huang ,&nbsp;Xiaoli Wang ,&nbsp;Sanwei Yang ,&nbsp;Chen Fang","doi":"10.1016/j.eti.2025.104313","DOIUrl":"10.1016/j.eti.2025.104313","url":null,"abstract":"<div><div>Nano-selenium, which has low toxicity and high biological activity, has become an important source of plant selenium supplementation. In this study, four groups, namely, CK, Se_L, Se_M and Se_H with nano-selenium levels of 0 μg/kg, 75 μg/kg, 150 μg/kg and 300 μg/kg (based on wet weight), respectively, were established to investigate the effects of nano-selenium on greenhouse gas emissions. The results found that the Se_M group had the highest fermentation temperature and the lowest greenhouse gas emission rate of the four groups. Compared with those in the CK group, cumulative emissions of carbon dioxide, methane and nitrous oxide in the Se_M group decreased by 13.69 %, 19.43 % and 46.32 %, respectively. Levels of the five most abundant genera in the rare subcommunity were significantly negatively correlated with the methane emission rate, whereas most bacterial genera in abundant and subdominant subcommunities were significantly positively correlated with gas emission rates. The addition of 75 μg/kg nano-selenium had a strong influence on the succession of the rare subcommunity, and promoted the growth and reproduction of the dominant genus <em>Luteimonas</em>. According to the above findings, nano-selenium at an appropriate concentration can reduce greenhouse gas emissions by regulating microbial communities. The production of nano-selenium organic fertilizer was conducive to the coordinated development of selenium-enriched and low-carbon agriculture.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"39 ","pages":"Article 104313"},"PeriodicalIF":6.7,"publicationDate":"2025-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144229781","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}

{"title":"MXene-based aqueous ethanolamine nanosuspension as new class of CO2 absorption media","authors":"A. Arifutzzaman ,&nbsp;Nur Azni Farhana Mazri ,&nbsp;Mohamed Kheireddine Aroua ,&nbsp;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}

{"title":"Magnetic supramolecular solvents: An efficient tool for extraction and photocatalytic degradation of dyes in textile wastewater","authors":"Lourdes Algar,&nbsp;María Dolores Sicilia,&nbsp;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⁻¹), at V_SUPRAS/V_water 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}

{"title":"Modeling spatiotemporal hotspots and impact of cobalt contamination in European soils","authors":"Chongchong Qi ,&nbsp;Kechao Li ,&nbsp;Tao Hu ,&nbsp;Qiusong Chen ,&nbsp;Zhang Lin ,&nbsp;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 &lt; 0.0001). Soil cobalt contamination (concentrations &gt;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}