Environmental Technology & Innovation最新文献

{"title":"Performance and mechanism of tetracycline removal by peroxymonosulfate-assisted double Z-scheme LaFeO3/g-C3N4/ZnO heterojunction under visible light drive","authors":"Jie Wang ,&nbsp;Jiahua Zhang ,&nbsp;Guofeng Cheng ,&nbsp;Kai Zhang ,&nbsp;Xingguo Liu","doi":"10.1016/j.eti.2025.104302","DOIUrl":"10.1016/j.eti.2025.104302","url":null,"abstract":"<div><div>The photocatalytic persulfate activation technology has attracted attention due to the synergistic effect that can be generated by the coupling of photocatalysis and persulfate. In this study, a ternary heterostructure LaFeO₃/g-C₃N₄/ZnO was successfully formed, and a coupled photocatalytic/PMS system was constructed. The coupled system exhibited synergistic effect and achieved high tetracycline removal efficiency and quick kinetic, as 85.89 % tetracycline was degraded within 40 min. Additionally, the coupled system has a wider pH adaptation range and can better resist the influence of coexisting ions (Cl⁻, <span><math><msubsup><mrow><mi>CO</mi></mrow><mrow><mn>3</mn></mrow><mrow><mn>2</mn><mo>−</mo></mrow></msubsup></math></span>) and humic acid. Mechanism investigation indicated that the double-Z scheme heterojunction between LaFeO₃, g-C₃N₄ and ZnO provides driving force for charge transfer and improves the separation of photogenerated electron-hole pairs, and PMS can act as an electron acceptor to prevent photogenerated electron hole recombination. <span><math><msubsup><mrow><mi>•</mi><mi>SO</mi></mrow><mrow><mn>4</mn></mrow><mrow><mo>−</mo></mrow></msubsup></math></span>, <span><math><mi>•</mi></math></span>OH, <span><math><msubsup><mrow><mi>•</mi><mi>O</mi></mrow><mrow><mn>2</mn></mrow><mrow><mo>−</mo></mrow></msubsup></math></span>, h⁺, and ¹O₂ work together in photocatalysis/PMS coupled system, with <span><math><mi>•</mi></math></span>OH and <span><math><msubsup><mrow><mi>•</mi><mi>SO</mi></mrow><mrow><mn>4</mn></mrow><mrow><mo>−</mo></mrow></msubsup></math></span> play a major role. Compared to solo photocatalytic system, the toxicity of tetracycline degradation intermediate products is lower and the mineralization degree of tetracycline is higher in the coupled system. Besides, LaFeO₃/g-C₃N₄/ZnO also exhibiting superior photocatalytic performance after four cycles. This work provides reference for photocatalytic persulfate activation technology to degrade tetracycline in water.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"39 ","pages":"Article 104302"},"PeriodicalIF":6.7,"publicationDate":"2025-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144189806","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":"New findings on the high dissolved oxygen stimulation of dissimilatory nitrate/nitrite reduction to ammonium","authors":"Cerong Wang ,&nbsp;Ying Wang ,&nbsp;Tengxia He ,&nbsp;Pan Wu ,&nbsp;Xingzhou Xu ,&nbsp;Manman Zhang","doi":"10.1016/j.eti.2025.104301","DOIUrl":"10.1016/j.eti.2025.104301","url":null,"abstract":"<div><div>Dissimilatory nitrate reduction to ammonium (DNRA) is a green technology for energy-efficient ammonium production. This reaction is performed by some microorganisms that contain functional nitrite reductase. In areas with nitrogen deficiencies, the unlimited DNRA potential of microorganisms has attracted much interest. However, the ability of actinomycetes to perform DNRA under aerobic conditions has been overlooked compared with that of bacteria. The metabolic process of microbial DNRA reportedly occurs mainly under anaerobic conditions. Here, we describe the ability of <em>Streptomyces mediolani</em> EM-B2 to produce high levels of ammonium under aerobic conditions. A higher ratio of nitrite to nitrate was more favorable for the DNRA process. The DNRA efficiency of strain EM-B2 reached 80.24 % under aerobic conditions, but this ability was lost under anaerobic conditions. These results show that efficient DNRA processes can occur under aerobic conditions. Strain EM-B2 can efficiently convert nitrate/nitrite into ammonium at a rate several times that of any previously reported wild-type aerobic DNRA microorganisms. This is the first report of actinomycetes production of ammonium in large quantities under aerobic conditions. This knowledge could be applied to manage nitrogen fertilizer use around the world.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"39 ","pages":"Article 104301"},"PeriodicalIF":6.7,"publicationDate":"2025-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144185698","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":"A methodology to estimate REE contents in post-mining soils by diffuse reflectance spectroscopy and machine learning","authors":"L. Salgado ,&nbsp;J.R. Rodríguez-Pérez ,&nbsp;C.A. López-Sánchez ,&nbsp;K.B. Mejía-Correal ,&nbsp;R. Forján ,&nbsp;J.R. Gallego","doi":"10.1016/j.eti.2025.104288","DOIUrl":"10.1016/j.eti.2025.104288","url":null,"abstract":"<div><div>Here we evaluated the capacity of diffuse reflectance spectroscopy (DRS) to predict the content of rare earth elements (REEs), namely Y, La, Ce, Pr, and Nd, in post-mining soils susceptible to be revisited for secondary mining. This technology was combined with machine learning (ML) data processing to achieve REE measurements using a non-destructive, rapid, and portable methodology as an alternative to geochemical surveys. A former mining site with a notable variability of substrates was selected to demonstrate the methodology. Spectral reflectance was recorded at 1-nm intervals from Visible and Near-Infrared (VIS-NIR), 350–2500 nm, and classical geochemical data were achieved to evaluate the performance of DRS. The REE content was adjusted by optimizing sample preparation (sieving at 2 mm was found to be the most adequate approach), transformation of spectral data (first-derivative transformation was selected), and the most appropriate ML technique to obtain fitted models (non-parametric techniques yielded models with a better fit than parametric ones). Random Forest (RF) provided non-biased models for La, Ce, Pr, and Nd and Generalized Boosting Models (GBMs) for Y, with <em>R</em>^<em>2</em> and <em>rRMSE</em> ranging from 0.840 to 0.890 and from 10.98 to 6.74, respectively. The models with the best performance revealed that NIR spectral region, specifically long-wave near infrared (LNIR), was the most important for determining REE content. Also, some wavelength ranges within the spectrum were identified for each REE. This reliable methodology emerges as a rapid approach to evaluate REE concentrations in secondary mining soils and has possible applications in primary mining exploration, environmental remediation, metallurgy, and materials science.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"39 ","pages":"Article 104288"},"PeriodicalIF":6.7,"publicationDate":"2025-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144185697","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":"Complex porous natural rubber foam composites with modified titanium dioxide for photocatalytic xylene removal","authors":"Aunnuda Lanna ,&nbsp;Sassawat Mailaeeiad ,&nbsp;Jobish Johns ,&nbsp;Siriluk Chiarakorn ,&nbsp;Yeampon Nakaramontri","doi":"10.1016/j.eti.2025.104300","DOIUrl":"10.1016/j.eti.2025.104300","url":null,"abstract":"<div><div>Natural rubber (NR) composite foams were fabricated using the Dunlop process to enhance their volatile solvent absorption capabilities. Modified titanium dioxide (TiO₂) derivatives, specifically zinc oxide-TiO₂ (ZnO-TiO₂) and silver doped–TiO₂ (Ag-TiO₂), were incorporated into the foams at varying concentrations. The characteristics of the modified and unmodified TiO₂ were confirmed through particle size analysis, Fourier transform infrared spectroscopy, and surface area measurements. The mechanical properties, air permeability, morphology, photocatalytic activity, and xylene absorption and removal efficiencies of the NR/TiO₂ composite foams were systematically evaluated. Incorporating both types of TiO₂ significantly improved the mechanical and photocatalytic properties of the foams. Adding 10 phr of the modified TiO₂ enhanced the modulus at 100 % elongation and tensile strength. Under ultraviolet and visible light irradiation, the NR foams containing ZnO-TiO₂ exhibited superior xylene absorption and removal. Including TiO₂ in the NR matrix increased the xylene gas degradation rate by 1.7 times compared to foams without TiO₂. These findings underscore the potential of modified TiO₂ for NR foam-based materials in applications such as furniture and filtration systems.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"39 ","pages":"Article 104300"},"PeriodicalIF":6.7,"publicationDate":"2025-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144229783","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":"Straw return enhances the global warming potential in paddy soil under the regulation of functional genes","authors":"Ziying Cui ,&nbsp;Jingli Wei ,&nbsp;Yukun Pan ,&nbsp;Wen Zhang ,&nbsp;Jialong Lv ,&nbsp;Yajun Yang","doi":"10.1016/j.eti.2025.104293","DOIUrl":"10.1016/j.eti.2025.104293","url":null,"abstract":"<div><div>Straw return enhances soil carbon storage but raises concerns over greenhouse gas (GHG) emissions. This study examined the impact of milk vetch (ZYY), wheat (XM), and rape (YC) straws on GHG emissions from paddy soils via incubation experiment. The dynamics of functional genes and bacterial communities were analyzed. Results indicated that straw addition significantly increased total organic carbon (TOC) by 51.7 %–70.4 % and dissolved organic carbon by 318.5 %–445.1 %, compared to CK. This led to elevated CO₂ and CH₄ emissions but reduced N₂O emissions. The XM treatment showed the highest global warming potential (GWP), 53.4 % and 25.0 % higher than ZYY and YC, respectively. TOC and soil microbial biomass nitrogen explained 6.8 % of CO₂ and 8.0 % of N₂O emissions. Straw addition also intensified the citrate cycle and pentose phosphate pathway, further promoting CO₂ emissions. The gene <em>mcrA</em> was the primary factor influencing CH₄ emissions, with <em>Ignavibacteriae</em> and <em>Anaerolinea</em> identified as its main hosts. Straw addition likely suppressed N₂O emissions by regulating denitrification-related species (e.g., <em>Anaeromyxobacter</em>, <em>Geobacter</em>). N₂O emissions were also influenced by <em>mcrA</em>, <em>pmoA</em>, and their hosts, potentially linked to anaerobic ammonium oxidation. This study offers insights into straw's effects on GHG emissions through functional gene and microbial regulation in paddy soils.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"39 ","pages":"Article 104293"},"PeriodicalIF":6.7,"publicationDate":"2025-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144167280","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":"Biodegradable planting bags composed of a biocomposite film using cassava starch and soy protein isolate: Design, production, and application","authors":"Rinlanee Kraisitthisirintr ,&nbsp;Wissuta Choeybandit ,&nbsp;Thomas Karbowiak ,&nbsp;Sukanya Wongwat ,&nbsp;Niramon Suntipabvivattana ,&nbsp;Pimonpan Kaewprachu ,&nbsp;Pornchai Rachtanapun ,&nbsp;Kittisak Jantanasakulwong ,&nbsp;Asadullah ,&nbsp;Duangjai Noiwan ,&nbsp;Wirongrong Tongdeesoontorn","doi":"10.1016/j.eti.2025.104299","DOIUrl":"10.1016/j.eti.2025.104299","url":null,"abstract":"<div><div>Biodegradable packaging materials were produced using blends of cassava starch (CS) and soy protein isolate (SPI) in varying proportions (20 %, 30 %, and 40 % SPI by weight) through an extrusion process, utilizing a regulated heating system to maintain uniform thermomechanical processing of the biopolymer mixtures. XRD and SEM were used to evaluate polymer characteristics and interactions. The mechanical and physicochemical parameters, including tensile strength (TS), elongation at break (EB), contact angle, film solubility, and film thickness, were examined. The XRD analysis indicated that incorporating protein improved crosslinking between starch and protein chains and increased crystallinity. SEM images revealed a rise in surface roughness corresponding to the increase in SPI %. The tensile strength of the CS-SPI film with 30 % SPI increased to 27.4 MPa, whereas the inclusion of 40 % SPI reduced tensile strength to 19.5 MPa. Conversely, the incorporation of 20 % SPI resulted in a higher EB of 117.9 %. The water solubility of 30 % SPI exceeded that of 20 % SPI by 38.5 %. All film samples were hydrophilic when measured by contact angle with water; however, 30 % SPI was the least hydrophilic. Through protein dispersion, SPI increased film opacity and decreased yellowness. Planting treatments on commercial bags and CS-SPI films were compared. Statistics showed no difference (p &gt; 0.05) in plant height and growth. The CS-SPI film showed that a higher SPI content increased planting bag durability under identical conditions without affecting plant development compared to a commercial nursery bag. However, the film's physical properties should be optimized.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"39 ","pages":"Article 104299"},"PeriodicalIF":6.7,"publicationDate":"2025-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144254687","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":"Unveiling the intrinsic relationship between ammonia and hydrogen sulfide generation during composting","authors":"Yue Sun,&nbsp;Zihan Xu,&nbsp;Nan Zhang,&nbsp;Dongdong Hu,&nbsp;Yao Liang,&nbsp;Chang Liu,&nbsp;Yinxi Zhu,&nbsp;Xiaomeng Chen","doi":"10.1016/j.eti.2025.104298","DOIUrl":"10.1016/j.eti.2025.104298","url":null,"abstract":"<div><div>Microbial nitrogen and sulfur metabolism release foul gases (NH₃ and H₂S) during manure composting, which causes environmental pollution and element loss. The synergistic reduction of NH₃ and H₂S emissions is of great significance. However, it is yet unclear whether NH₃ and H₂S generation are relevant and co-regulable during composting. Therefore, this study supplemented available nitrate (N) and nitrate + cysteine lyase inhibitor (NI) to explore their effects on foul gases emission. Compared to CK composting, H₂S cumulative release reduced by 55.05 % and 62.27 % during N and NI composting, respectively, and NH₃ cumulative release reduced by 61.86 % and 59.55 %. Additionally, the fitted curves results suggested that nitrate supplementation enhanced the correlations between microbial nitrate reduction, sulfate reduction and oxidation. Therefore, this study revealed that there was an intrinsic relationship between NH₃ and H₂S generation during composting, and the regulation of microbial structure and metabolism contributed to the co-reduction of foul gases.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"39 ","pages":"Article 104298"},"PeriodicalIF":6.7,"publicationDate":"2025-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144167822","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":"Green AgNPs from grapevine pruning waste: Synthesis and activity against P. aeruginosa","authors":"Anna Miskovska,&nbsp;Marketa Kulisova,&nbsp;Olga Matatkova,&nbsp;Jana Michailidu,&nbsp;Alena Cejkova,&nbsp;Irena Jarosova Kolouchova","doi":"10.1016/j.eti.2025.104287","DOIUrl":"10.1016/j.eti.2025.104287","url":null,"abstract":"<div><div>The scientific literature increasingly emphasizes environmentally sustainable treatments, circular economy principles, and effective waste management strategies. Grapevine (<em>Vitis vinifera</em>) is one of the most extensively cultivated crops worldwide, generating substantial amounts of waste rich in bioactive compounds. In this study, we investigate the stability and application of <em>V. vinifera</em> shoot extract for the green synthesis of silver nanoparticles (AgNPs). Key reaction parameters influencing nanoparticle stability—including temperature, pH, and light exposure—were systematically evaluated. Optimal synthesis was achieved at pH 7.5 and room temperature producing AgNPs with sizes ranging from 7 to 80 nm, depending on conditions. AgNPs synthesized at pH 7.5 exhibited excellent homogeneity and long-term stability, with no significant changes in UV-Vis absorbance after 24 months. Furthermore, the antibacterial activity of the AgNPs, the <em>V. vinifera</em> extract, and their combination was assessed against <em>Pseudomonas aeruginosa</em> strains. Our findings revealed a synergistic inhibitory effect, with the combined use of the extract and nanoparticles—without their separation from the reaction mixture—enhancing antimicrobial efficacy. This approach offers a promising and practical strategy for biomedical and environmental applications.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"39 ","pages":"Article 104287"},"PeriodicalIF":6.7,"publicationDate":"2025-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144167821","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":"Long-term exposure to PM2.5 and its components on human high low-density lipoprotein cholesterolemia: A 10-year cohort study in southwest China","authors":"Qinyu An ,&nbsp;Hui Liu ,&nbsp;Fuyan Zhang ,&nbsp;Qingqing Zhan ,&nbsp;Xiaoxue Li ,&nbsp;Lihua Yin ,&nbsp;Tao Liu","doi":"10.1016/j.eti.2025.104294","DOIUrl":"10.1016/j.eti.2025.104294","url":null,"abstract":"<div><h3>Background</h3><div>Limited research has focused on the independent effects of PM_2.5 chemical components sulfate (SO₄^2-), nitrate (NO₃^-), ammonium (NH₄⁺), organic matter (OM), and black carbon (BC) on high low-density lipoprotein cholesterolemia. Therefore, our research aims to investigate the potential casual links between long-term PM_2.5 and its components exposure and high low-density lipoprotein cholesterolemia, while identifying potentially susceptible subpopulations.</div></div><div><h3>Methods</h3><div>The study included 5442 participants from the Guizhou Population Health Cohort Study (GPHCS), which lasted for 10 years. A time-dependent Cox proportional hazards regression model was applied to calculate hazard ratios (HRs) and 95 % confidence intervals (CIs) for the risk of high low-density lipoprotein cholesterolemia. General linear models (GLMs) were utilized to evaluate the association between PM_2.5 and its components with low density lipoprotein cholesterol (LDL-C) levels.</div></div><div><h3>Results</h3><div>There was a total of 17,339.94 person-years (PYs), among which 1299 cases of high low-density lipoprotein cholesterolemia were found. All pollutants were associated with the incidence of high low-density lipoprotein cholesterolemia (<em>P</em> &lt; 0.05) except for BC. Each 1 SD increase in PM_2.5 (4.51 μg/m³₎ and PM_2.5 chemical components, including SO₄^2- (2.14 μg/m³) NO₃^- (1.36 μg/m³) NH₄⁺ (0.92 μg/m³) OM (2.57 μg/m³) and BC(0.70 μg/m³), was associated with increased LDL-C levels by 0.78 mmol/L (95 % CI: 0.73–0.84), 0.42 mmol/L (95 % CI: 0.36–0.48), 0.58 mmol/L (95 % CI: 0.53–0.62), 0.50 mmol/L (95 % CI: 0.46–0.55), 0.40 mmol/L (95 % CI: 0.34–0.45), and 0.31 mmol/L (95 % CI: 0.25–0.37), respectively. Subgroup analysis revealed long-term exposure to PM_2.5 and its components had a more substantial impact on minority population, individuals without exhaust ventilation, and those not using clean fuels.</div></div><div><h3>Conclusion</h3><div>This study shows that long-term exposure to PM_2.5 and its components was associated with an increased risk of high low-density lipoprotein cholesterolemia and elevated LDL-C levels, especially among minorities and those without exhaust ventilation or clean fuels.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"39 ","pages":"Article 104294"},"PeriodicalIF":6.7,"publicationDate":"2025-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144297332","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":"Partial substitution of biogas slurry for chemical fertilizer increased wheat grain yield while alleviating N2O emissions by improving soil quality and regulating N cycling genes","authors":"Eba Muluneh Sorecha,&nbsp;Renjie Ruan,&nbsp;Yue Yuan,&nbsp;Yaosheng Wang","doi":"10.1016/j.eti.2025.104286","DOIUrl":"10.1016/j.eti.2025.104286","url":null,"abstract":"<div><div>Overuse of chemical fertilizers (CF) degrades soil and environmental quality.Replacing chemical fertilizer (CF) with biogas slurry (BS), an organic alternative, offers a sustainable solution. However, the mechanisms by which BS balances yield benefits with N₂O emissions, along with metagenomic insights, remain unclear. This study examined six fertigation strategies including control,100 %CF, and 25 %, 50 %, 75 %, and 100 % BS substitution for CF, on soil quality index (SQI), nitrogen use efficiency (NUE), wheat growth and nutrient uptake, grain yield, and N₂O emissions, along with metagenomic analysis. The results showed that 50 % BS substitution significantly (<em>p</em> &lt; 0.001) increased wheat tillers (43.5 %), dry matter (21.6 %), N uptake (52.6 %), NUE (32.2 %), and grain yield (24.4 %) compared to 100 %CF. Furthermore, it also reduced N₂O emissions by 26.9 % and yield-scaled N₂O emissions by 44.8 %. The structural equation modeling (SEM) demonstrated that the enhanced SQI (57.8 %) significantly boosted grain yield and NUE, which was ascribed to the N₂O emission reduction. The 50 %BS treatment significantly reduced archaeal ammonia monooxygenase (Arch-<em>amoA</em>) abundance compared to 100 %CF, with metagenomic analysis revealing that N₂O emissions were mainly attributed to Arch-<em>amoA</em>. SEM analysis confirmed that N₂O emissions were mainly driven by Arch-<em>amoA</em> over the bacterial ammonia monooxygenase (Bac-<em>amoA</em>) in nitrification and <em>nosZ</em> over <em>nirS</em> in denitrification, significantly reducing emissions. Random Forest analysis identified that available N (NH₄⁺‐N and NO₃^--N) dominantly moderated grain yield, while soil pH, C:N, available N, and total N importantly regulated N₂O emissions. Replacing 50 % CF with BS in wheat sustainably enhances yield, reduces N₂O emissions, and promotes environmental sustainability.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"39 ","pages":"Article 104286"},"PeriodicalIF":6.7,"publicationDate":"2025-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144185695","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}