环境科学与生态学最新文献_第7页

Sustainable solution for microplastic removal: Sequential biodegradation and detoxification of polyethylene terephthalate microplastics by two natural microbial consortia. 微塑料去除的可持续解决方案：两种天然微生物群落对聚对苯二甲酸乙二醇酯微塑料的顺序生物降解和解毒。

IF 6.1 2区环境科学与生态学

Ecotoxicology and Environmental Safety Pub Date : 2025-09-01 Epub Date: 2025-07-25 DOI: 10.1016/j.ecoenv.2025.118738

Minoo Giyahchi, Hamid Moghimi

{"title":"Sustainable solution for microplastic removal: Sequential biodegradation and detoxification of polyethylene terephthalate microplastics by two natural microbial consortia.","authors":"Minoo Giyahchi, Hamid Moghimi","doi":"10.1016/j.ecoenv.2025.118738","DOIUrl":"10.1016/j.ecoenv.2025.118738","url":null,"abstract":"Polyethylene terephthalate (PET) is a widely used plastic polymer, and its microplastics pose significant threats to ecosystems. One promising approach to addressing this issue is biodegradation using microbial consortia. This study implemented a two-stage biodegradation strategy using microbial consortia to degrade PET microplastics and detoxify their by-products. In the first stage, a bacterial/fungal consortium dominated by Ralstonia, Bradyrhizobium, Exophiala, and Vanrija achieved a 28 ± 2 % degradation efficiency over 60 days, converting PET into medium-chain alkanes (as confirmed by GC-MS analysis), with a maximum CO2 evolution rate of 722 ppm. Physical and chemical analyses, including Scanning electron microscopy (SEM), Brunauer-Emmett-Teller (BET) analysis, and Fourier transform infrared (FTIR) spectroscopy, revealed structural destruction, mesopore formation, and ester bond breakage of the microplastics. Toxicity assessment of by-products showed a 40 % reduction in human endothelial cell viability, necessitating further detoxification. The second stage utilized a bacterial consortium dominated by Ochrobacterium and Achromobacter, which effectively reduced toxic by-products to 20 %. This study emphasizes the dual focus on efficient PET degradation and the safe decomposition of harmful by-products, showcasing the potential of sequential biodegradation strategies as sustainable solutions for microplastic pollution.","PeriodicalId":303,"journal":{"name":"Ecotoxicology and Environmental Safety","volume":"302 ","pages":"118738"},"PeriodicalIF":6.1,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144717111","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

Overlooked risk of antibiotic resistance genes in typical landfill plumes and their influencing factors. 典型垃圾掩埋柱中抗生素耐药基因被忽视的风险及其影响因素。

IF 6.1 2区环境科学与生态学

Ecotoxicology and Environmental Safety Pub Date : 2025-09-01 Epub Date: 2025-07-28 DOI: 10.1016/j.ecoenv.2025.118765

Dongsheng Shen, Xin Gao, Cai Hui, Yuyang Long, Jiali Shentu, Li Lu, Shengqi Qi

{"title":"Overlooked risk of antibiotic resistance genes in typical landfill plumes and their influencing factors.","authors":"Dongsheng Shen, Xin Gao, Cai Hui, Yuyang Long, Jiali Shentu, Li Lu, Shengqi Qi","doi":"10.1016/j.ecoenv.2025.118765","DOIUrl":"10.1016/j.ecoenv.2025.118765","url":null,"abstract":"Landfills are one of the primary reservoirs of antibiotic resistance genes (ARGs). Previous studies always focus on the distribution of ARGs in landfill leachate, while the distribution of ARGs in groundwater around the landfill and the corresponding influencing factors are always overlooked. In this study, seven groundwater samples and one leachate sample were collected from a typical landfill in Yueqing, China. Sulfonamide was the most abundant antibiotic in groundwater with its concentration of 1.2-23.1 ng L-1. Metagenomic analysis revealed 13 major types and 88 subtypes of antibiotic resistance genes (ARGs) in the leachate and surrounding groundwater. Multidrug (23.2-51.4 %), sulfonamide (2.6-24.1 %), tetracycline (3.0-35.8 %), macrolides-lincosamide-streptogramin (MLS, 1.1-26.3 %) and aminoglycoside (0.9-13.1 %) resistance genes were the top five types in the detected ARGs, while the ARGs abundance in groundwater increased with landfill age. Heavy metals (Ni, Pb, Cr, Cd) were strongly correlated with certain ARG subtypes, while no significant correlations were observed between antibiotics and their corresponding ARGs due to their low concentrations. Through co-occurrence network analysis, it was found that ARGs were tightly correlated with mobile genetic elements (MGEs), while several types of virulence factors such as flmH, cylG and clbF were also tightly correlated with MGEs. Besides, ARGs were also correlated with some denitrification genes such as nirB and norC, showing that the denitrification process would enhance the dissemination of ARGs. This study provides important insights for assessing the risk of ARGs spreading through leachate leakage in groundwater and can help optimize the management strategy of landfill.","PeriodicalId":303,"journal":{"name":"Ecotoxicology and Environmental Safety","volume":"302 ","pages":"118765"},"PeriodicalIF":6.1,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144740694","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

Biochar promotes removal of intracellular and extracellular antibiotic resistance genes in sludge compost: Reshaping microbial communities. 生物炭促进污泥堆肥中细胞内和细胞外抗生素抗性基因的去除：重塑微生物群落。

IF 8.4 2区环境科学与生态学

Journal of Environmental Management Pub Date : 2025-09-01 Epub Date: 2025-07-30 DOI: 10.1016/j.jenvman.2025.126781

Xinxin Wu, Zhurui Tang, Yuqian Li, Zhe Du, Wei Li, Simiao Wang, Caihong Huang

{"title":"Biochar promotes removal of intracellular and extracellular antibiotic resistance genes in sludge compost: Reshaping microbial communities.","authors":"Xinxin Wu, Zhurui Tang, Yuqian Li, Zhe Du, Wei Li, Simiao Wang, Caihong Huang","doi":"10.1016/j.jenvman.2025.126781","DOIUrl":"10.1016/j.jenvman.2025.126781","url":null,"abstract":"Antibiotic resistance genes (ARGs), as emerging pollutants, jeopardize ecological and public health. Extracellular ARGs (eARGs) pose heightened risks due to their mobility, accelerating resistance spread. However, studying eARGs remains challenging given extracellular DNA's environmental instability. While aerobic composting of sewage sludge reduces ARGs, resurgence of certain genes (e.g., sulfonamide resistance) in later stages may exacerbate resistance risks. This study investigated the effects of sludge-derived biochar and commercial biochar on the reduction of intracellular and extracellular sulfonamide ARGs during sludge composting. After the addition of both biochars, intracellular ARGs (iARGs) gradually decreased as composting progressed, while eARGs initially increased before subsequently declining. The biochars reshaped the microbial community in sludge composting, significantly increasing the number of differentially enriched microbial species, altering community assembly processes, and reducing bacterial diversity and richness-key factors in ARGs reduction. The addition of both biochars also decreased the abundance of intl1, and combined with the inactivation of certain microorganisms and disruption of cell membranes, effectively suppressed the horizontal gene transfer (HGT) of eARGs. However, compared to commercial biochar, the application of sludge-derived biochar led to an increase in potential host microorganisms for ARGs, highlighting a potential risk associated with the production of biochar from sludge. Additionally, the biochars modified environmental factors such as moisture and organic content, further enhancing eARG removal. This study proposes a \"waste-to-waste\" circular economy model. By reusing sludge-derived biochar in composting, it not only suppresses the spread of ARGs but also achieves high-value utilization of sludge, enabling synergistic pollution control.","PeriodicalId":356,"journal":{"name":"Journal of Environmental Management","volume":"392 ","pages":"126781"},"PeriodicalIF":8.4,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144758779","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

Chloride leaching and strength development of alkali-activated materials with municipal solid waste incineration fly ash, red mud and carbide slag. 城市生活垃圾焚烧飞灰、赤泥和电石渣对碱活性材料的氯浸及强度发展。

IF 8.4 2区环境科学与生态学

Journal of Environmental Management Pub Date : 2025-09-01 Epub Date: 2025-07-30 DOI: 10.1016/j.jenvman.2025.126766

Wei Zhang, Caihong Xue, Dezhi Zhao, Hui Ye, Yueyao Jia, Qingxin Zhao

{"title":"Chloride leaching and strength development of alkali-activated materials with municipal solid waste incineration fly ash, red mud and carbide slag.","authors":"Wei Zhang, Caihong Xue, Dezhi Zhao, Hui Ye, Yueyao Jia, Qingxin Zhao","doi":"10.1016/j.jenvman.2025.126766","DOIUrl":"10.1016/j.jenvman.2025.126766","url":null,"abstract":"Using as an alkaline activator to produce alkali-activated materials (AAMs) for construction and buildings provides an economic strategy for the treatment of hazardous municipal solid waste incineration fly ash (MSWI FA). In this study, Al2O3-rich red mud (RM) and CaO-rich carbide slag (CS) were used to tackle the chloride leaching issue of AAMs with MSWI FA arising from the Cl in MSWI FA. The optimal content of RM and CS for achieving higher compressive strength and less chloride leaching was determined. FTIR, XRD and TGA were employed to reveal the variation in phase assemblage with the raw materials and carbonation treatment. The results showed that the system with 10 % CS, 20 %RM, 20 % MSWI FA and 50 % GGBS achieved the maximum compressive strength at 56 days (27.5 MPa) and the minimal water-soluble chloride concentration (3.5 %). RM provided alkalis to activate GGBS also Si and Al to generate additional gels; the calcium from CS facilitated the precipitation of Friedel's salt, thereby reducing the chloride leaching, but more CS than 10 % negatively impacted the compressive strength due to excessive alkalinity. Whilst an appropriate carbonation treatment densified the matrix, it increased the chloride leaching as a consequence of the replacement of Cl- by CO32- in the chloride binding phases. The results obtained offer technical assistance for better management of solid wastes.","PeriodicalId":356,"journal":{"name":"Journal of Environmental Management","volume":"392 ","pages":"126766"},"PeriodicalIF":8.4,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144758780","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

Does peer pressure increase pro-environmental engagement? An extended stimulus-organism-response model. 同辈压力会增加亲环境的参与吗？一个扩展的刺激-生物体-反应模型。

IF 8.4 2区环境科学与生态学

Journal of Environmental Management Pub Date : 2025-09-01 Epub Date: 2025-07-30 DOI: 10.1016/j.jenvman.2025.126719

Kaiqin Li, Xiaoling Zhang, Yingying Wen

{"title":"Does peer pressure increase pro-environmental engagement? An extended stimulus-organism-response model.","authors":"Kaiqin Li, Xiaoling Zhang, Yingying Wen","doi":"10.1016/j.jenvman.2025.126719","DOIUrl":"10.1016/j.jenvman.2025.126719","url":null,"abstract":"A large number of individuals and organizations have gradually realized the severity of climate change and environmental degradation and have engaged in pro-environmental behaviors (PEBs) to alleviate environmental problems. However, less effort has been paid to detect the internal psychological processes inside the effect of different interventions on individual PEBs. Therefore, based on the stimulus-organism-response (SOR) theory, we discuss the impact of peer pressure (stimulus) on easy PEBs and difficult PEBs (response) through the psychological distance to the environment (organism). To further understand the contexts of the stimulus-response relations, we discuss the moderating role of social interaction in the influence of peer pressure on easy and difficult PEBs. However, social interaction can only moderate the impact of peer pressure on easy PEBs (green lifestyles), while it doesn't work on difficult PEBs (willingness to pay). Our results extend the applicability of the SOR theory in easy and difficult PEBs by verifying the applicability of stimulus-organism-response theory in green lifestyles and willingness to pay for the environment besides green consumption and tourism. The introduction of social interaction expands the theory in the context of general PEBs, in addition to green consumption and tourism. The study can offer references for policymakers to encourage PEBs by reducing the psychological distance to the environment and creating an environment-friendly atmosphere.","PeriodicalId":356,"journal":{"name":"Journal of Environmental Management","volume":"392 ","pages":"126719"},"PeriodicalIF":8.4,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144758852","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

Effects of different monochromatic light on anaerobic ammonia oxidation systems: performance, microbial characteristics and mechanism. 不同单色光对厌氧氨氧化系统的影响：性能、微生物特性及机理。

IF 8.4 2区环境科学与生态学

Journal of Environmental Management Pub Date : 2025-09-01 Epub Date: 2025-07-30 DOI: 10.1016/j.jenvman.2025.126773

Leipeng Shen, Ziyan Liang, Zena Peng, Qiucai Jiang, Xingling Huang, Tong Lu, Xuqi Pan, Guangwei Yu, Yuhai Liang

{"title":"Effects of different monochromatic light on anaerobic ammonia oxidation systems: performance, microbial characteristics and mechanism.","authors":"Leipeng Shen, Ziyan Liang, Zena Peng, Qiucai Jiang, Xingling Huang, Tong Lu, Xuqi Pan, Guangwei Yu, Yuhai Liang","doi":"10.1016/j.jenvman.2025.126773","DOIUrl":"10.1016/j.jenvman.2025.126773","url":null,"abstract":"The weak resistance of anaerobic ammonia oxidizing bacteria (AnAOB) to harsh environment is the key problem facing the application of AnAOB process. In order to elucidate the mechanism of the effect of light on anammox systems, the nitrogen removal performance and microbial succession at different wavelengths were investigated. The results showed that the nitrogen removal performance of the UV light reactor significantly decreased, while that of the green light reactor increased. The average total nitrogen removal rate (TNRR) of green light reactor was 10.71 × 10-3 mg TN/(mg MLSS·h) and increased by 22.04 % compared to that of dark conditions. Additionally, microalgae growth was observed in the warm-white light, purple light and red light reactors. The combined effects of ROS and microalgae affect the TNRR of anammox system. When the synergies of microalgae, AnAOB and other microorganisms are greater than the competition, the system shows better nitrogen removal performance. When competition is greater than synergy, the nitrogen removal performance of the system may be reduced.","PeriodicalId":356,"journal":{"name":"Journal of Environmental Management","volume":"392 ","pages":"126773"},"PeriodicalIF":8.4,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144758855","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

Blockchain-driven innovations of carbon emission management in cement supply chain: Evidence from China. 水泥供应链碳排放管理的区块链驱动创新：来自中国的证据。

IF 8.4 2区环境科学与生态学

Journal of Environmental Management Pub Date : 2025-09-01 Epub Date: 2025-07-31 DOI: 10.1016/j.jenvman.2025.126795

Zhihan Yang, Xiao Li, Yimin Zhu, Xiaodong Li

{"title":"Blockchain-driven innovations of carbon emission management in cement supply chain: Evidence from China.","authors":"Zhihan Yang, Xiao Li, Yimin Zhu, Xiaodong Li","doi":"10.1016/j.jenvman.2025.126795","DOIUrl":"10.1016/j.jenvman.2025.126795","url":null,"abstract":"Carbon emission management (CEM) in the cement supply chain (CSC) is crucial for promoting sustainable construction and addressing climate change. Blockchain technology, as a disruptive tool for environmental data governance across multiple stakeholders, provides a promising pathway to enhance the transparency, traceability, and reliability of carbon emission information. This study systematically evaluates its adaptability to the specific scenarios and CEM needs of different stakeholders in CSC and identifies critical prerequisites for successful implementation, which remain underexplored but essential for effective adoption. Drawing on semi-structured interviews and structured questionnaires with experts from professional institutions in China, this research identifies critical drivers and barriers based on management practices and innovation adoption theories. The findings reveal that blockchain's potential extends beyond carbon accounting and footprint tracking, particularly when integrated into collaborative emission reduction mechanisms. Five prerequisites for effective implementation are identified as scientific and reasonable application methods, market-based incentive mechanisms, targeted technical breakthroughs, talent and institutional support, and the spread of awareness and concepts. By bridging the gap between emerging digital technologies and practical carbon emission strategies, this study contributes to both theoretical and practical advancements in blockchain-enhanced CEM and sustainable-oriented innovation within the CSC and broader construction supply chain.","PeriodicalId":356,"journal":{"name":"Journal of Environmental Management","volume":"392 ","pages":"126795"},"PeriodicalIF":8.4,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144764288","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

New approach methodologies for risk assessment of urinary occurring toxicants. 尿中毒性物质风险评估的新方法。

IF 6.1 2区环境科学与生态学

Ecotoxicology and Environmental Safety Pub Date : 2025-09-01 Epub Date: 2025-07-31 DOI: 10.1016/j.ecoenv.2025.118649

Maximilian Jobst, Irís Guerreiro, Delphine Payros, Isabelle P Oswald, Ana S Fernandes, Benedikt Warth, Giorgia Del Favero

{"title":"New approach methodologies for risk assessment of urinary occurring toxicants.","authors":"Maximilian Jobst, Irís Guerreiro, Delphine Payros, Isabelle P Oswald, Ana S Fernandes, Benedikt Warth, Giorgia Del Favero","doi":"10.1016/j.ecoenv.2025.118649","DOIUrl":"10.1016/j.ecoenv.2025.118649","url":null,"abstract":"The reduction, refinement, and replacement of animal-based toxicological studies is becoming an essential requirement at academic, industrial, and governmental levels, turning new approach methodologies (NAMs) from alternatives into necessities. New strategies for hazard characterization and exposure assessment have been developed in this wake, including among others, sophisticated organ-on-chip platforms, or holistic human biomonitoring programs. This review summarizes state-of-the-art methods of NAMs for hazard characterization and advances in exposure assessment in the context of toxicants occurring in human urine. Considering that urine collects a wide variety of excretion products, it can harbor chemically diverse compounds including heavy metals and metalloids, foodborne mycotoxins and phytotoxins, as well as synthetic and process chemicals. Hence, urine analysis is a precious element for exposure assessment and the urinary excretory organs are highly relevant toxicological targets. Especially for environmental or foodborne contaminants, the classical regulatory framework is challenged by natural variability of the producing organisms, climate change, global trade, and obviously heterogeneous exposure landscape related to an individual's lifestyle and diet. In this light, NAMs represent an unprecedented opportunity to support and speed up risk assessment. The aim of this review is to summarize current knowledge, in order to identify gaps on hazard profiling for selected urinary occurring contaminants, as well as for their exposure assessment. Furthermore, it aims at identifying the challenges in the field from both the toxicological and analytical perspectives in light of next generation risk assessment (NGRA).","PeriodicalId":303,"journal":{"name":"Ecotoxicology and Environmental Safety","volume":"302 ","pages":"118649"},"PeriodicalIF":6.1,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144764255","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

Determinants of carbon footprint in the USA: The role of public energy technology R&D, energy security risk, renewable energy transition, and population density. 美国碳足迹的决定因素：公共能源技术研发、能源安全风险、可再生能源转型和人口密度的作用。

IF 8.4 2区环境科学与生态学

Journal of Environmental Management Pub Date : 2025-09-01 Epub Date: 2025-08-01 DOI: 10.1016/j.jenvman.2025.126803

Yasin Sogut, Tunahan Degirmenci, Mucahit Aydin

{"title":"Determinants of carbon footprint in the USA: The role of public energy technology R&D, energy security risk, renewable energy transition, and population density.","authors":"Yasin Sogut, Tunahan Degirmenci, Mucahit Aydin","doi":"10.1016/j.jenvman.2025.126803","DOIUrl":"10.1016/j.jenvman.2025.126803","url":null,"abstract":"Reducing the carbon footprint is essential to mitigating environmental degradation. This study investigates the determinants of the carbon footprint in the United States over the period 1974-2021, focusing on four main drivers: public energy technology R&D, renewable energy transition, energy security risk, and population density. Using the Fourier-augmented ARDL (A-ARDL) model, empirical results confirm a significant cointegration among the variables. Notably, energy security risk, renewable energy transition, and population density are found to significantly reduce the carbon footprint, while public R&D in energy technology has no statistically significant impact. These findings are further validated by robustness checks using FMOLS and CCR estimators. The study emphasizes that while innovation efforts are crucial, their effectiveness in reducing emissions depends on the pace of technological adoption and supporting infrastructure. Based on these results, the study recommends prioritizing renewable energy expansion and investing in energy storage technologies to strengthen environmental sustainability in the USA.","PeriodicalId":356,"journal":{"name":"Journal of Environmental Management","volume":"392 ","pages":"126803"},"PeriodicalIF":8.4,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144768202","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

Lauric acid controls nitrogen release and inhibits nitrification in wastewater-enriched compost. 月桂酸控制氮释放，抑制富废水堆肥的硝化作用。

IF 8.4 2区环境科学与生态学

Journal of Environmental Management Pub Date : 2025-09-01 Epub Date: 2025-08-01 DOI: 10.1016/j.jenvman.2025.126778

Oshadhi L Rajapakshe, Sun K Gurung, James O'Connor, Bede S Mickan, Pankaj K Singh, Ian S Waite, Courtney De Mascio, Lynette K Abbott, Sasha N Jenkins

{"title":"Lauric acid controls nitrogen release and inhibits nitrification in wastewater-enriched compost.","authors":"Oshadhi L Rajapakshe, Sun K Gurung, James O'Connor, Bede S Mickan, Pankaj K Singh, Ian S Waite, Courtney De Mascio, Lynette K Abbott, Sasha N Jenkins","doi":"10.1016/j.jenvman.2025.126778","DOIUrl":"10.1016/j.jenvman.2025.126778","url":null,"abstract":"Compost is a sustainable soil amendment but typically lacks sufficient nitrogen (N) to function as a fertiliser. In this study, compost granules were enriched with NH4NO3-rich wastewater, increasing total N content from 1.28 % to 10 %. To regulate N release and potentially reduce environmental losses, lauric acid (LA) was applied as a coating at 5 %, 10 %, and 15 % (w/w). A 42-day glasshouse experiment with kikuyu grass evaluated N availability through shoot biomass, shoot N content, soil mineral N concentrations, and microbial responses. The modified compost (CGWW) produced the highest shoot N content (59.3 mg/pot) and biomass (3.75 g/pot). LA-coated compost treatments reduced shoot N content by 22-30 % and biomass by up to 17 % compared to CGWW, indicating lower plant N uptake due to delayed N release. Similar soil NH4+-N and NO3--N levels at harvest suggest more organic N remained locked up in CGWWLA, likely due to microbial immobilisation. LA application suppressed ammonia-oxidising bacteria (Nitrosomonadaceae), with the most significant reduction observed in the 15 % LA-only treatment (log2-fold change = -50.8). This microbial inhibition aligns with reduced shoot N content and supports the role of LA as a nitrification inhibitor. However, the 5 % LA coating was equally effective as higher rates, highlighting cost-efficiency. The findings highlight LA's potential in delaying N release and inhibiting ammonia oxidation, making it an effective agent for reducing N losses in fertilisers.","PeriodicalId":356,"journal":{"name":"Journal of Environmental Management","volume":"392 ","pages":"126778"},"PeriodicalIF":8.4,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144768228","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