Environmental Technology & Innovation最新文献

{"title":"Proof of concept: Recovery of high-purity volatile fatty acids by membrane system from source-separated waste streams","authors":"Isaac Owusu-Agyeman ,&nbsp;Martina Fridl ,&nbsp;Anna Köttö ,&nbsp;Frederico Marques Penha ,&nbsp;Zeynep Cetecioglu","doi":"10.1016/j.eti.2025.104350","DOIUrl":"10.1016/j.eti.2025.104350","url":null,"abstract":"<div><div>Volatile fatty acids (VFAs) are platform chemicals with a higher value with wide applications. The feasibility of producing high-purity VFAs from source-separated wastewater using mixed-culture fermentation and membrane techniques was investigated. Batch studies were conducted for VFA production from blackwater and food waste under acidic and alkaline conditions. The VFA production from blackwater was higher at initial pH 9 with yield of up to 0.82 ± 0.03 gCOD/gCOD_fed due to higher buffer capacity, homogeneity, and biodegradability. The highest VFA yield from food waste was 0.36 ± 0.02 gCOD/gCOD_fed at initial pH 5. VFAs from the blackwater were dominated by acetic acid (up to 93 %), regardless of pH VFAs from the food waste were dominated by butyric acid (up to 76 %) and propionic acid (up to 52 %) at pH 5 and 9, respectively. Both the substrate types and pH influenced the microbial communities of the fermentation reactors. <em>Bacteroides</em> (up to 40 %) and <em>Atopostipes</em> (up to 51 %) were dominant genii for blackwater at initial pH 5 and 9, while <em>Clostridium_sensu_stricto</em> clusters (up to 58 %) and <em>Romboutsia</em> (up to 37 %) dominated food waste fermentation microbial communities at pH 5 and 9, respectively. VFAs were separated and purified with nanofiltration (NF) and reverse osmosis (RO). NF produced high-purity, but low-concentration permeate (900 −1500 mgCOD/L) at 50 % permeate recovery (with up to 42 % of acetic acid permeating the NF membrane). A higher concentration of pure VFAs (3x higher) was achieved with a subsequent step of RO. The study highlights the feasibility of the recovery of functional chemicals from waste.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"40 ","pages":"Article 104350"},"PeriodicalIF":6.7,"publicationDate":"2025-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144571442","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":"Life cycle assessment of solid recovered fuel for energy sector in declining coal region: Replacement of coal within the regional energy mix","authors":"Jiří Ryšavý ,&nbsp;Jakub Čespiva ,&nbsp;Lukasz Niedzwiecki ,&nbsp;David Kupka ,&nbsp;Mateusz Jackowski ,&nbsp;Cheng-Chi Wang ,&nbsp;Jenn-Kun Kuo ,&nbsp;Anna Trusek ,&nbsp;Calin-Cristian Cormos ,&nbsp;Milan Dej ,&nbsp;Wei-Hsin Chen","doi":"10.1016/j.eti.2025.104349","DOIUrl":"10.1016/j.eti.2025.104349","url":null,"abstract":"<div><div>Solid recovered fuel derived from non-recyclable waste represents an alternative energy source suitable for use in waste incineration or combustion facilities. Its adoption reduces fossil fuel consumption in heat and electricity production, thereby mitigating associated environmental impacts. This study evaluates the environmental benefits of substituting coal with SRF in the energy mix of the Moravian-Silesian Region (Czech Republic), a post-coal region currently dependent on fossil fuels. A life cycle assessment (LCA) was conducted according to the methodology outlined in EN ISO 14040 and 14044 standards, using the PEF 3.0 method and OpenLCA software, assessing three SRF composition scenarios and four energy conversion efficiency scenarios (WtE and CHP). The study focuses on key environmental indicators, such as \"climate change\" and \"resource use, fossils,\" which collectively represent over 70 % of the total environmental impacts. The findings reveal that integrating SRF into the region’s energy mix has the potential to significantly reduce the environmental footprint of electricity and heat production. Specifically, the reductions in the \"climate change\" indicator range from 4.42 % to 35.7 %, while the overall \"environmental footprint\" indicator shows reductions between 10.86 % and 40.5 %. These findings confirm SRF’s potential as a key tool in transitioning toward a more sustainable regional energy strategy.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"40 ","pages":"Article 104349"},"PeriodicalIF":6.7,"publicationDate":"2025-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144580070","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":"Assessing the impacts of motorway construction on groundwater in karst mountain areas, Southwest China","authors":"Qiong Xiao ,&nbsp;Qiong Yu ,&nbsp;Fen Huang ,&nbsp;Fajia Chen ,&nbsp;Qiang Zhang ,&nbsp;Decai Mi ,&nbsp;Qiongyao Ye","doi":"10.1016/j.eti.2025.104338","DOIUrl":"10.1016/j.eti.2025.104338","url":null,"abstract":"<div><div>Motorways in karst mountainous regions play a key role in promoting economic development and enhancing local living standards. However, the construction of motorways in these sensitive ecosystems poses substantial risks to groundwater resources. In this study, the effects of a motorway project under construction in Southwest China on karst groundwater systems. Hydrochemistry and flow rate monitoring and isotopic analysis were conducted in two groundwater watersheds serving as drinking water sources. Throughout the construction period, the hydrochemical characteristics and groundwater flow rates remained stable, and water quality met the drinking water standards of China in both watersheds. However, tunnel excavation led to increased levels of potassium (K) and sodium (Na) in tunnel drainage owing to cutting fluid used during tunnel construction. Isotopic signatures of δ¹³C-HCO₃⁻ confirmed that carbonate rock weathering is the primary source of HCO₃^- in groundwater, whereas δ¹⁵N-NO₃⁻ and δ¹⁸O-NO₃⁻ tracers identified manure and domestic sewage used in agricultural activities in recharge areas as the sources of nitrate. The study further revealed that the location of springs relative to the motorway and the degree of karstification significantly of the construction area affect the impact on groundwater. The construction motorway located downstream of the spring outlet caused no notable spring damage, whereas the motorway construction located upstream of the spring outlet, in conjunction with cave landfilling operations in highly karstification regions, induced significant hydrogeological disturbances, resulting in shifts in hydrogeochemical properties and temporary spring depletion until a new equilibrium was established. These findings provide crucial insights for mitigating impacts on groundwater resource through route planning and construction practices in karst regions.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"40 ","pages":"Article 104338"},"PeriodicalIF":6.7,"publicationDate":"2025-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144548939","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":"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}