Environmental Technology & Innovation最新文献

{"title":"Fertiliser nitrogen source and the use of nitrification inhibitors are tools to reduce nitrous oxide emissions and improve agronomic performance in temperate grassland","authors":"Dumsane Themba Matse ,&nbsp;Dominika J. Krol ,&nbsp;Karl G. Richards ,&nbsp;Martin Danaher ,&nbsp;Enda Cummins ,&nbsp;Xin Wang ,&nbsp;Patrick J. Forrestal","doi":"10.1016/j.eti.2025.104232","DOIUrl":"10.1016/j.eti.2025.104232","url":null,"abstract":"<div><div>The application of nitrogen (N) fertilisers to agricultural soils is a common practice that can result in significant nitrous oxide (N₂O) emissions. Nitrogen source and the use of nitrification inhibitors (NIs) have shown potential to reduce N₂O emissions from agricultural soils. However, to date most studies conducted in temperate grassland have tested one or two NIs in isolation, often with one N source such as urea. Hence, the present study tests the effect of four NIs: 3, 4-dimethylpyrazole phosphate (DMPP), dicyandiamide (DCD), nitrapyrin (NP) and a novel new NI 5-methoxy-3-methyl-1H-pyrazole (MMP) with both urea and urea ammonium nitrate (UAN) applied in autumn and spring seasons. Calcium ammonium nitrate (CAN) was included as a common N fertiliser used in Europe and also an acidified liquid amide-N (Flex-N) that is also in use but limited trial work has been published. This is the first study to report on N₂O emissions and agronomic performance of the NI MMP, doing so with both solid and liquid fertiliser, and the acidified liquid amide N product (Flex-N). The urea, Flex-N and UAN fertilisers lowered the N₂O-N emission factor (EF) by 84, 78 and 68 %, respectively compared to CAN across seasons. In autumn, urea and UAN treated with NIs reduced the N₂O-N EF by up to 64 % and by up to 60 % compared to untreated urea and UAN, respectively. In spring, urea and UAN treated with NIs reduced N₂O-N EF by up to 88 % and by up to 37 % compared to untreated urea and UAN, respectively. Inclusion of NIs increased pasture yield and N uptake in both seasons. These study results suggest that fertiliser N source and the use of NIs are effective tools for reducing N₂O emissions while improving yields and N utilisation.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"39 ","pages":"Article 104232"},"PeriodicalIF":6.7,"publicationDate":"2025-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143903714","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":"Algorithms for source location source location and chemical oxygen demand concentration over time along the river","authors":"E. Bonet,&nbsp;M.T. Yubero,&nbsp;L. Sanmiquel,&nbsp;M. Bascompta","doi":"10.1016/j.eti.2025.104230","DOIUrl":"10.1016/j.eti.2025.104230","url":null,"abstract":"<div><div>The global use of freshwater has increased six-fold in the past 100 years and has been growing by about 1 % per year since the 1980s. Meanwhile, rapid urbanization, climate change, and inefficient water management have contributed to a 20 % decline in per capita freshwater availability in recent decades reducing the water resources even more. The scarcity of water in the coming decades is exacerbated by human actions, including thousands of accidental pollution spills and intentional illegal discharges into surface waters. To address this challenge, a Monitoring and Mitigation Framework (MMF) was developed to minimize damage from contaminant spills, identify contaminant sources in real time, and estimate Chemical Oxygen Demand (COD) flow concentration rates in real time. The MMF was specifically designed to detect environmental crimes, track companies responsible for contamination spills, and facilitate the scheduling of mitigation actions in coordination with law enforcement authorities for ongoing and future events. This real-time framework uses Inverse Estimation (IE) algorithms built with Artificial Neural Networks algorithms to detect contamination source location and estimate COD flow concentration at source location over time. This provides real-time evidence for identifying potential companies involved in environmental crimes according to local police of the Malaga City Council (Spain). Both algorithms were trained on a Learning Database build from over 13,000 simulations, and generated by an algorithm called Launching Multiple Scenarios algorithm also developed in this work. The MMF was developed and tested at Llobregat river (Barcelona, Spain), and it was considered 2621 test cases with different spill location and COD concentrations ranging from 0.1 to 80,000 mg/l. In those tests, IE algorithms were able to estimate COD concentration at the source with a mean absolute error (MAE) lower than 2.6 mg/l and a Mean Square Relative Error (MSRE) lower than 10 mg/l, correctly identifying the contamination source location in more than 85 % of cases.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"39 ","pages":"Article 104230"},"PeriodicalIF":6.7,"publicationDate":"2025-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143891987","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":"Nature-based stormwater management for aquifer recharge: Exploring bioclogging-induced challenges","authors":"Yuhui Wu ,&nbsp;Ying Lu ,&nbsp;Zihan Yan ,&nbsp;Min Shi ,&nbsp;Qiandan Wang ,&nbsp;Tao Lyu ,&nbsp;Ruoyu Jia ,&nbsp;Ling Huang ,&nbsp;Zhiliang Chen ,&nbsp;Jianyu Chen ,&nbsp;Xiaoming Song ,&nbsp;Yuesuo Yang","doi":"10.1016/j.eti.2025.104228","DOIUrl":"10.1016/j.eti.2025.104228","url":null,"abstract":"<div><div>Utilising excess urban stormwater to recharge groundwater can effectively mitigate the problems caused by the over-exploitation of subsurface environments while simultaneously making full use of valuable water resources. However, bioclogging can significantly reduce the efficiency of recharge projects in practical applications. This study is distinguished by its comprehensive consideration of unsaturated hydraulic conditions during stormwater recharge, which can influence microbial activities and the evolution of bioclogging, setting it apart from the predominant focus on saturated conditions in previous research. Microbial activity in the media became more vigorous under unsaturated conditions, and the cell volume decreased to 33–50 % of that under saturated conditions. Under unsaturated conditions, microbial EPS exhibited a curled morphology. At 60 % saturation, the contents of LB-EPS and polysaccharides increased by 141.23 and 187.47 μg/g sand, respectively, compared to saturated conditions. The reduction in saturation weakened microbial migration, promoted their deposition on the media surfaces, and reduced the non-uniformity of interlayer distribution. Simultaneously, unsaturated seepage conditions attenuated the effect of flow velocity (0.5–2 mL/min) changes on microbial migration and deposition. Bioclogging under unsaturated seepage conditions was governed by both EPS action and the EPS-bacterial interaction, with EPS secretion significantly influencing the degree of internal bioclogging development. This work contributes to a more comprehensive understanding of the bioclogging mechanisms under the unique hydrodynamic conditions of stormwater recharge, enabling more precise prevention and control of bioclogging during artificial stormwater recharge.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"39 ","pages":"Article 104228"},"PeriodicalIF":6.7,"publicationDate":"2025-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143906667","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":"Biodegradation of dinitroaniline herbicides: A comprehensive review","authors":"Cheng Zhang ,&nbsp;Boya Jin ,&nbsp;Jiaqi Liu ,&nbsp;Qiuping Wang ,&nbsp;Bing Tian","doi":"10.1016/j.eti.2025.104225","DOIUrl":"10.1016/j.eti.2025.104225","url":null,"abstract":"<div><div>Dinitroaniline herbicides are a class of highly efficient and broad-spectrum herbicides, and due to their large-scale use, their residue has become an important environmental problem. Degradation by microorganisms is the main manner in which they can be decomposed in the environment, and microorganisms’ advantages of high efficiency, non-toxicity, and no pollution confer upon them broad potential for development in pesticide degradation. Therefore, the isolation and screening of strains that can efficiently degrade dinitroaniline herbicides and the analysis of their degradation pathways and mechanisms can improve the theoretical basis for the remediation of dinitroaniline herbicide pollution. To promote research on the biodegradation of dinitroaniline herbicides, this paper presents a review on the progress in the research on dinitroaniline-degrading microbial strains, metabolic degradation pathways, and degradation-related genes and enzymes. We also discuss the current problems in the microbial degradation of dinitroaniline herbicides and the direction of future research, aiming to provide a reference for in-depth studies on this topic.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"39 ","pages":"Article 104225"},"PeriodicalIF":6.7,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143868843","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":"Electrifying greenhouse agriculture: Cold atmospheric pressure plasma technology for Pythium ultimum control","authors":"Sean Watson ,&nbsp;Fady Abdelmalek ,&nbsp;Élodie Larouche ,&nbsp;Mylène Généreux ,&nbsp;Julie Monette ,&nbsp;Caroline Côté ,&nbsp;Emilie Bédard ,&nbsp;Jason Robert Tavares ,&nbsp;Michael R. Wertheimer ,&nbsp;Stephan Reuter","doi":"10.1016/j.eti.2025.104222","DOIUrl":"10.1016/j.eti.2025.104222","url":null,"abstract":"<div><div>Hydroponic growth of food plants in greenhouses is of rapidly increasing importance to assure future autonomy of food supply, especially in harsher climate zones. Greenhouse culture yields are drastically reduced by pathogenic microorganisms that cause root rot in plants. In Canada, the fungus <em>Pythium ultimum,</em> which can survive harsh winter conditions, has a particularly large impact on food production. In this work, we present cold physical plasma treatment of liquids with a gliding arc plasma as a novel approach for combating <em>pythium</em> growth in liquid media. This study is based on exploring air or other N₂ + O₂ mixtures as a parameter to identify which plasma treatment is best suited for its anti-fungal activity in different media. If sourced from renewable energy and water, the proposed treatment is intrinsically sustainable. 3 media conditions are explored: first distilled water, to identify the production of highly reactive oxygen species (ROS) and reactive nitrogen species (RNS). Second, an inoculated distilled water is used in conjunction with an ELISA assay as a quick response indicator. Third, a Sabouroud 2 % dextrose broth, is used as a culture media in which oomycetes are grown subsequent to plasma treatment, and hyphal mass is compared between untreated and treated samples. Extracting a subset of 80+ chemical reactions from the available literature and databases, a reaction scheme is proposed accounting for liquid-vapor equilibria (through Henry’s coefficients) and reaction rate analysis. The most promising plasma treatment condition was found to be using a 95 % N₂: 5 % O₂ gas mixture with a treatment time of 30 min, reducing hyphal mass growth from 1.8 g to 0.4 g over 1 week in Sabouroud broth. The pythium degradation process was observed through scanning electron microscopy (SEM) analysis, showing that Sporangium or oogonia containing structures that terminate the pythium’s hyphae have been broken and significantly reduced after plasma treatment.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"39 ","pages":"Article 104222"},"PeriodicalIF":6.7,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143906817","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":"Organic management improves soil P availability via increasing inorganic P solubilization in tea plantations","authors":"Yunni Chang ,&nbsp;Zhidan Wu ,&nbsp;Josep Peñuelas ,&nbsp;Jordi Sardans ,&nbsp;Yuzhen Chen ,&nbsp;Fuying Jiang ,&nbsp;Feng Wang","doi":"10.1016/j.eti.2025.104223","DOIUrl":"10.1016/j.eti.2025.104223","url":null,"abstract":"<div><div>Organic management is a crucial practice for activating residual phosphorus (P) and enhancing its availability in soils, with microorganisms playing a central role in regulating P cycling. Despite this, the effects of long-term organic management on P availability via microbial functional traits remain insufficiently explored. This study evaluates the impact of chemical (industrial fertilizers) (CF) and organic fertilization (OF) over an extended period in tea plantations, also incorporating surrounding forestland (FD) for comparison. We analyzed soil properties, P fractions, microbial functional genes, and microbial communities involved in P cycling. Our findings demonstrated that CF and OF both significantly enhanced soil P availability and nutrient levels, with organic management showing a positive correlation with soil available P. Notably, OF significantly decreased the abundance of <em>pstS, phnC, phnD and phnE</em> compared to CF<em>,</em> suggesting the potentially inhibition of P uptake and transport system. Organic management significantly increased gene abundance of <em>ppk1, ppx</em>, <em>aphA</em> and <em>glpA</em> compared to CF, indicating the promotion of soil inorganic P solubilization and organic P mineralization. Different management did not significantly affected the functional genes relative abundance involved in P starvation response regulation. Organic management also markedly increased the abundance of <em>Actinobacteria, Gemmatimonadetes</em> and <em>Chloroflexi</em>, which were markedly positively related to soil available P. This study advances our understanding of the role of soil microbial functional genes and communities in enhancing P availability, elucidating the impacts of organic resources in subtropical tea plantations.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"39 ","pages":"Article 104223"},"PeriodicalIF":6.7,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143874896","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":"Vegetation Filters for brewery wastewater treatment: Results of a ‘lab-to-field’ procedure under Mediterranean conditions compared to a conventional WWTP","authors":"R. Pradana ,&nbsp;B.D. González-González ,&nbsp;I. González ,&nbsp;N. Oliveira ,&nbsp;H. Sixto ,&nbsp;I. De Bustamante","doi":"10.1016/j.eti.2025.104227","DOIUrl":"10.1016/j.eti.2025.104227","url":null,"abstract":"<div><div>Water is a vital element in the brewing industry, being present in all facets of its operation. This industry generates substantial wastewater quantities, requiring intensive and expensive treatment in Wastewater Treatment Plants (WWTP). Vegetation Filters (VF) are a type of Nature-Based Solution (NBS) for wastewater treatment that offers a sustainable alternative to these WWTP. In this work, an innovative ‘Lab-to-field’ procedure including several trials at different scales was conducted to assess the applicability of VFs to the brewing industry, starting from trials under greenhouse conditions to a real scale pilot plantation under Mediterranean conditions (Spain). This represents the first attempt to assess the use of VF in the brewing industry. The occurring processes during the trials under controlled conditions match those observed on the field, thus validating the experimental procedure as a quick and simple tool for new scenarios. While total phosphorous (TP), chemical oxygen demand (COD) or total suspended solids (TSS), among other parameters, were easily removed from the wastewater, nitrogen (N) leaching towards the aquifer was observed, especially during the second period of the VF operation. This was caused by the detrimental effects of the high salinity (especially sodicity) on soil and plant health, highlighting the need for rigorous control and maintenance. Minimizing the sodium (Na⁺) amounts in influent wastewater and the addition of soil amendments and proper soil and cultural management practices would be most beneficial for the overall system performance. More research is needed addressing the effects of suggested limitations on Na⁺-rich compounds during wastewater pretreatment</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"39 ","pages":"Article 104227"},"PeriodicalIF":6.7,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143868841","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":"Soil ecosystem multifunctionality and growth characteristics of Leymus chinensis were enhanced after sandy soil amendment with vermicompost and soil conditioner in soil-plant-microbe system","authors":"Feng Ai ,&nbsp;Shimei Zheng ,&nbsp;Chunmei Zeng ,&nbsp;Binbin Li ,&nbsp;Kaiyu Zhang ,&nbsp;Chenchen Zhang ,&nbsp;Qiang Li ,&nbsp;Longfei Kang","doi":"10.1016/j.eti.2025.104226","DOIUrl":"10.1016/j.eti.2025.104226","url":null,"abstract":"<div><div>The vermicompost coupled with coal-based soil conditioner has the potential to improve soil physicochemical properties and enhance the growth of plants. It plays a crucial role in facilitating the biogeochemical cycling of elements and maintaining ecological balance in ecosystems. However, there is still insufficient evidence on the specific promotion mechanisms. To investigate the effects of coal-based soil conditioners and vermicompost application on sandy soil ecosystem multifunctionality and growth characteristics of <em>Leymus chinensis</em> (Trin.) Tzvel. (<em>L. chinensis</em>), a field trial was conducted in semi-arid region. Treatments include T1 (vermicompost: soil conditioner = 1:2), T2 (1:1), T3 (2:1), and control check (CK). Study results indicated that soil properties significantly improved when vermicompost and soil conditioner were applied at a 2:1 ratio. This treatment resulted in a substantial increase in soil moisture content, nutrients content and alkaline phosphatase (ALP) enzyme activity. Soil ALP in amendment treatments significantly increased by 61.54 % compared with CK treatment. Furthermore, the growth of <em>L. chinensis</em> was improved and biomass increased form 7.3–40.6 % than CK treatment. The α-diversity and abundance of soil microorganisms in amendment treatments were superior rather than CK treatment (p &lt; 0.05). Moreover, soil microbial communities were primarily influenced by soil AvN, pH and AvK. The <em>Chloroflexi</em> was identified as the key factor when we compared between T3 and other treatments. Mantel test further showed that AvN was significantly correlated with microbial communities. Path models showed that the addition of vermicompost and coal-based conditioner enhanced the feedback effect of soil microorganisms on plant growth status in the soil-plant system. Our findings strongly demonstrated that the application of vermicompost and soil conditioner significantly improved sandy soil multifunctionality by increasing soil moisture content, enhancing nutrient contents, regulating microbial communities and facilitating plant biomass. Thus vermicompost combined with coal-based soil conditioner can be considered as a potential material to improve soil ecological functions and promote plant production.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"39 ","pages":"Article 104226"},"PeriodicalIF":6.7,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143868840","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":"Isolation and characterization of cyromazine-degrading bacteria from soil and its application in bioconversion by black soldier fly","authors":"Haixu Zhang ,&nbsp;Sen Yang ,&nbsp;Xilu Zhang ,&nbsp;Yaxin Pei ,&nbsp;Mengxiao Chen ,&nbsp;Hongge Chen ,&nbsp;Jiran Zhang","doi":"10.1016/j.eti.2025.104221","DOIUrl":"10.1016/j.eti.2025.104221","url":null,"abstract":"<div><div>Cyromazine, a widely used insect growth regulator, accumulates in livestock manure and poses risks to beneficial insects such as black soldier fly larvae (BSFL) during waste bioconversion. This study isolated two bacterial strains capable of degrading cyromazine, <em>Bacillus subtilis</em> CYR1 (CYR1) and <em>Bacillus velezensis</em> CYR2 (CYR2), from contaminated chicken manure. Both strains demonstrated significant degradation efficiency via hydrolysis of cyromazine to cyanuric acid, a less toxic metabolite. However, in chicken manure systems, degradation efficiency reached a plateau at approximately 20 %, likely due to preferential utilization of alternative nitrogen sources and inherent metabolic constraints. These findings highlight the potential of microbial remediation to mitigate cyromazine contamination while underscoring the need for strain optimization and comprehensive ecotoxicological assessments.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"39 ","pages":"Article 104221"},"PeriodicalIF":6.7,"publicationDate":"2025-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143878720","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":"Rice straw hydrolysate valorization for efficient polyhydroxyalkanoate production in a two-stage process","authors":"Fanirintsoa Herivonona Andrianantenaina ,&nbsp;Raj Morya ,&nbsp;Hwan-Hong Joo ,&nbsp;Sang-Hyoun Kim","doi":"10.1016/j.eti.2025.104217","DOIUrl":"10.1016/j.eti.2025.104217","url":null,"abstract":"<div><div>Lignocellulose hydrolysate bioconversion into Polyhydroxyalkanoates (PHAs) has emerged as a captivating alternative to petroleum-based polymers. The present work investigated PHA biosynthesis from a volatile fatty acids (VFAs)-rich titer produced from anaerobic digestion of C5-sugar rich rice straw hydrolysate (RSH). The feast and famine approach employed for PHA production produced 9.207 g COD/L PHA during famine cycle 5, resulting in a PHA yield of 0.11 g PHA/g dry rice straw. Famine conditions selectively induce stress and allow only stress-tolerant organisms to survive. The microbial community population during the maximum PHA production was dominated by genera <em>Acinetobacter Paenibacillus, Bacillus</em>, and <em>Lysinibacillus.</em> The produced PHA was analyzed by NMR and FTIR and found to be a copolymer Poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) combination of ∼55 % hydroxybutyrate (HB) and ∼45 % hydroxyvalerate. Biodegradable and biocompatible plastic products made from this PHA combination can be used in a variety of applications, including biotechnology, food packaging, and medical equipment.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"39 ","pages":"Article 104217"},"PeriodicalIF":6.7,"publicationDate":"2025-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143868842","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}