Bioresource Technology最新文献_第2页

Effect of light intensity on performance, microbial community and metabolic pathway of algal-bacterial symbiosis in sequencing batch biofilm reactor treating mariculture wastewater 光照强度对序批式生物膜反应器处理海水养殖废水性能、微生物群落及藻-菌共生代谢途径的影响

IF 9.7 1区环境科学与生态学

Bioresource Technology Pub Date : 2025-05-26 DOI: 10.1016/j.biortech.2025.132726

Qianzhi Wang , GuangYu Chu , Chang Gao , Taotao Tian , Wenchen Zhang , Wenzheng Chen , Mengchun Gao

{"title":"Effect of light intensity on performance, microbial community and metabolic pathway of algal-bacterial symbiosis in sequencing batch biofilm reactor treating mariculture wastewater","authors":"Qianzhi Wang , GuangYu Chu , Chang Gao , Taotao Tian , Wenchen Zhang , Wenzheng Chen , Mengchun Gao","doi":"10.1016/j.biortech.2025.132726","DOIUrl":"10.1016/j.biortech.2025.132726","url":null,"abstract":"<div><div>An algal-bacterial symbiosis (ABS) system was constructed in a sequencing batch biofilm reactor for mariculture wastewater treatment, and its performance, microbial community and metabolic pathway were analyzed under different light intensities. The ammonia oxidation rate and nitrate reduction rate under 7000 Lux light intensity were higher than other light intensities. Functional microorganisms including <em>Nitrosomonas</em>, <em>Nitrospira</em>, <em>Alterinioella</em>, and <em>Chlorella vulgaris</em> were enriched under 7000 Lux. Metabolism was the primary functional pathway based on Kyoto Encyclopedia of Genes and Genomes. Tricarboxylic acid (TCA) cycle, nitrogen metabolism and photosynthesis pathways belonging to Metabolism were promoted under 7000 Lux light intensity. The enhancement of light intensity promoted the algal photosynthesis, TCA cycle, electron generation, and nitrogen transformation. The TCA cycle and electron generation offered energy and electron donors for nitrogen transformation. This research provides fundamental knowledge to select optimal light intensity for ABS system treating mariculture wastewater.</div></div>","PeriodicalId":258,"journal":{"name":"Bioresource Technology","volume":"433 ","pages":"Article 132726"},"PeriodicalIF":9.7,"publicationDate":"2025-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144172278","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Bioeconomic potential of lignocellulosic by-products: Steam explosion-based fractionation into solid and liquid phases for fiber and methane production 木质纤维素副产品的生物经济潜力：蒸汽爆炸分馏成固液相用于纤维和甲烷生产

IF 9.7 1区环境科学与生态学

Bioresource Technology Pub Date : 2025-05-26 DOI: 10.1016/j.biortech.2025.132723

Fabian Orth , Benedikt Hülsemann , Jayen Aris Kriswantoro , Ting-Wu Ko , Chen-Yeon Chu

{"title":"Bioeconomic potential of lignocellulosic by-products: Steam explosion-based fractionation into solid and liquid phases for fiber and methane production","authors":"Fabian Orth , Benedikt Hülsemann , Jayen Aris Kriswantoro , Ting-Wu Ko , Chen-Yeon Chu","doi":"10.1016/j.biortech.2025.132723","DOIUrl":"10.1016/j.biortech.2025.132723","url":null,"abstract":"<div><div>This study examines lignocellulosic by-products from agriculture and food industry for methane production. Banana peels, cacao bean shells, rice straw, tomato plant residues, and wheat straw underwent steam explosion treatment (SE) at 160 °C and 10 min followed by solid–liquid separation. Specific methane yield increased between 8.6 % to 19.6 % for rice and wheat straw and cacao bean shells after SE treatment, while decreasing for banana peels (14.1 %). The liquid phase demonstrated high specific methane yield potential, with SMY between 227 and 336 L<sub>CH4</sub> kg<sub>ODM</sub><sup>−1</sup>. Meanwhile, the fiber-rich solid phase offers potential for both energy applications and material utilization. The process supports both bioeconomic strategies and greenhouse gas reduction efforts through sustainable valorization of agricultural waste streams in circular economy models. However, further research is needed to optimize SE conditions and investigate other applications for the solid such as peat substitution.</div></div>","PeriodicalId":258,"journal":{"name":"Bioresource Technology","volume":"433 ","pages":"Article 132723"},"PeriodicalIF":9.7,"publicationDate":"2025-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144169289","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Near-infrared spectroscopy as a green analytical tool for sustainable biomass characterization for biofuels and bioproducts: An overview 近红外光谱作为生物燃料和生物产品可持续生物质表征的绿色分析工具：综述

IF 9.7 1区环境科学与生态学

Bioresource Technology Pub Date : 2025-05-25 DOI: 10.1016/j.biortech.2025.132722

Md Wadud Ahmed , Vijay Singh , Mohammed Kamruzzaman

{"title":"Near-infrared spectroscopy as a green analytical tool for sustainable biomass characterization for biofuels and bioproducts: An overview","authors":"Md Wadud Ahmed , Vijay Singh , Mohammed Kamruzzaman","doi":"10.1016/j.biortech.2025.132722","DOIUrl":"10.1016/j.biortech.2025.132722","url":null,"abstract":"<div><div>Biomass, a widely used renewable energy source, requires characterization to optimize biofuel and bioproduct processes, customize feedstocks, and ensure economic and environmental sustainability. Conventional wet-chemistry methods for biomass analysis are slow, expensive, and require significant reagents and skilled personnel. In contrast, near-infrared (NIR) spectroscopy, a faster, cost-effective, and reagent-free green technology, enables non-destructive biomass analysis with minimal sample preparation. This study provides an overview of the fundamentals of NIR spectroscopy and explores its recent applications for analyzing various biomass properties important to the biofuel and bioproduct industry. The study also critically evaluates the challenges and opportunities of using NIR spectroscopy for biomass analysis. This review aims to guide future research for rapid and high throughput characterization of biomass in the biomass industry, supporting the United Nations’ sustainable development goal (SDG) 7: producing affordable and sustainable energy.</div></div>","PeriodicalId":258,"journal":{"name":"Bioresource Technology","volume":"433 ","pages":"Article 132722"},"PeriodicalIF":9.7,"publicationDate":"2025-05-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144139494","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Upcycling glycerol into succinic acid: sustainable integration with biodiesel mills. 将甘油升级为琥珀酸：与生物柴油工厂的可持续整合。

IF 9.7 1区环境科学与生态学

Bioresource Technology Pub Date : 2025-05-24 DOI: 10.1016/j.biortech.2025.132716

Diego A R Ordóñez, Francisco J B T L Strunck, Luciana S Dutra, Amanda L T Brandão

{"title":"Upcycling glycerol into succinic acid: sustainable integration with biodiesel mills.","authors":"Diego A R Ordóñez, Francisco J B T L Strunck, Luciana S Dutra, Amanda L T Brandão","doi":"10.1016/j.biortech.2025.132716","DOIUrl":"https://doi.org/10.1016/j.biortech.2025.132716","url":null,"abstract":"<p><p>This study explores the industrial potential of producing bio-based succinic acid (SA) from crude glycerol, a low-value byproduct of Brazil's biodiesel industry. By integrating green chemistry and biotechnology, the research aims to upcycle crude glycerol into high-value SA. Using Yarrowia lipolytica as a natural SA producer, the study assesses standalone facilities and systems integrated into biodiesel mills. Results show that producing SA from crude glycerol (S1) reduces climate change impact by 47% compared to using pure glycerol (S2), despite lower productivity. Integrating SA production with biodiesel operations (S3) improves economic performance but raises CO<sub>2</sub> emissions by 54% relative to standalone biodiesel production (S1). All scenarios are economically feasible, with payback periods under seven years. Energy use and solvent recovery optimization remain essential to boost competitiveness. This work underscores the potential to upcycle crude glycerol, supporting circular economy strategies and informing sustainable biorefinery development and policy.</p>","PeriodicalId":258,"journal":{"name":"Bioresource Technology","volume":" ","pages":"132716"},"PeriodicalIF":9.7,"publicationDate":"2025-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144148902","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Engineered mycosporine-based glucoconjugates by enzymatic cascade: Towards innovative ultraviolet filters and antioxidant compounds. 酶级联工程菌素葡萄糖缀合物：创新紫外线过滤器和抗氧化化合物。

IF 9.7 1区环境科学与生态学

Bioresource Technology Pub Date : 2025-05-24 DOI: 10.1016/j.biortech.2025.132721

Elodie Bascans, Etienne Séverac, David Guieysse, Marion Claverie, Sylvie Blanc, Magali Remaud-Simeon, Susana C M Fernandes, Claire Moulis

{"title":"Engineered mycosporine-based glucoconjugates by enzymatic cascade: Towards innovative ultraviolet filters and antioxidant compounds.","authors":"Elodie Bascans, Etienne Séverac, David Guieysse, Marion Claverie, Sylvie Blanc, Magali Remaud-Simeon, Susana C M Fernandes, Claire Moulis","doi":"10.1016/j.biortech.2025.132721","DOIUrl":"https://doi.org/10.1016/j.biortech.2025.132721","url":null,"abstract":"<p><p>Mycosporine-serinol (MSer(OH)) is a small natural molecule with unique ultraviolet (UV) absorbing and antioxidant properties, but its hydrophilic and instable structure hampers its formulation for applications. Inspired by the fact that certain mycosporines are naturally glycosylated, this work assessed the development of an enzymatic route for the glucosylation of MSer(OH) using sucrose, a cheap and abundant resource. The newly characterized α-transglucosylase GS-D Δ1, from Ligilactobacillus animalis DSM 20602, stood out for its ability to glucosylate 96 % of MSer(OH) by grafting 1 to 3 glucosyl units. Then, an enzymatic cascade was established to produce various glucosylated-MSer(OH) differing in terms of linkage specificity and chain length. Their photostability and antioxidant capacities match those of free MSer(OH) or well-known antioxidants, making them potential competitors to commercial sunscreens. Notably, a MSer(OH)-based dextran chain over 10<sup>8</sup> g.mol<sup>-1</sup> exhibited promising properties for cosmetic or medical formulations, as well as anti-UV bio-based materials.</p>","PeriodicalId":258,"journal":{"name":"Bioresource Technology","volume":" ","pages":"132721"},"PeriodicalIF":9.7,"publicationDate":"2025-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144148899","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Dynamics of lignocellulose degradation by acid: Kinetic insights into high-solid acid pretreatment at normal temperatures 酸降解木质纤维素的动力学：常温下高固体酸预处理的动力学见解

IF 9.7 1区环境科学与生态学

Bioresource Technology Pub Date : 2025-05-24 DOI: 10.1016/j.biortech.2025.132720

Qianqian Yang , Rui Zhai , Yihang Tian , Mingjie Jin

{"title":"Dynamics of lignocellulose degradation by acid: Kinetic insights into high-solid acid pretreatment at normal temperatures","authors":"Qianqian Yang , Rui Zhai , Yihang Tian , Mingjie Jin","doi":"10.1016/j.biortech.2025.132720","DOIUrl":"10.1016/j.biortech.2025.132720","url":null,"abstract":"<div><div>Conventional acid pretreatment at high temperatures (>100 °C) and low solid–liquid ratios, often leads to excessive inhibitor formation. In this study, a high-solid, normal-temperature acid (HSNTA) pretreatment was developed to enhance digestibility while minimizing inhibitor generation. Corn stover was pretreated at 50 °C for 14 days with a solid–liquid ratio of 1.30 (56.5 % w/w solid loading), resulting in a total sugar recovery of 90.9 %. Enzymatic hydrolysis yielded 89.5 % glucan and 81.2 % xylan conversion. Kinetic analysis revealed that, under high-solid conditions, cellulose was primarily hydrolyzed into <em>gluco</em>-oligomers due to limited acid diffusion constraints. Xylan exhibited biphasic degradation comprising fast- and slow-reacting fractions, while lignin degradation was selective, occurring mainly in accessible regions. Kinetic models were established to quantitatively interpret the degradation behavior of individual components. These findings highlight the unique challenges and dynamics of biomass degradation under high-solid, normal-temperature conditions, addressing the importance of optimizing pretreatment parameters to maximize sugar yield.</div></div>","PeriodicalId":258,"journal":{"name":"Bioresource Technology","volume":"433 ","pages":"Article 132720"},"PeriodicalIF":9.7,"publicationDate":"2025-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144139496","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Integrated insights into a novel dual-functioning heterotrophic nitrification-aerobic denitrification strain Glutamicibacter halophytocola MD1: Performance and metabolic mechanisms of synchronous nitrogen and phosphorus removal 新型异养硝化-好氧反硝化菌株MD1的综合研究：同步脱氮除磷的性能和代谢机制。

IF 9.7 1区环境科学与生态学

Bioresource Technology Pub Date : 2025-05-23 DOI: 10.1016/j.biortech.2025.132714

Pengyi Lyu , Xiaoman Li , Xiao Luo , Jiansheng Cui

{"title":"Integrated insights into a novel dual-functioning heterotrophic nitrification-aerobic denitrification strain Glutamicibacter halophytocola MD1: Performance and metabolic mechanisms of synchronous nitrogen and phosphorus removal","authors":"Pengyi Lyu , Xiaoman Li , Xiao Luo , Jiansheng Cui","doi":"10.1016/j.biortech.2025.132714","DOIUrl":"10.1016/j.biortech.2025.132714","url":null,"abstract":"<div><div><em>Glutamicibacter halophytocola</em> MD1, a novel heterotrophic nitrification-aerobic denitrification and phosphate removal bacterium was isolated. MD1 exhibited high nitrogen and phosphorus removal efficiency across different nitrogen sources. Under optimal conditions, it achieved 100.0 % removal of NO<sub>3</sub><sup>−</sup>-N and PO<sub>4</sub><sup>3−</sup>-P. Multi-omics and nitrogen balance analyses revealed that ammonia assimilation was the main heterotrophic nitrification pathway for MD1, while the aerobic denitrification pathway followed NO<sub>3</sub><sup>−</sup>-N → NO<sub>2</sub><sup>−</sup>-N → NH<sub>4</sub><sup>+</sup>-N → glutamate. The multi-omics analysis revealed that MD1 possessed a phosphate transport gene cluster <em>pstSCAB</em>; phosphate transformation genes <em>ppk1</em>, <em>ppk2</em> and <em>ppx</em>. P element fate analysis indicated that approximately 75.5 % of the P taken up by MD1 was stored intracellularly as orthophosphate and phosphodiester, mainly whereas approximately 19.4 % was stored in the extracellular polymeric substances in the form of orthophosphate and monoesters. The discovery of strain MD1 offers novel insights into the development of technologies for the simultaneous removal of nitrogen and phosphorus.</div></div>","PeriodicalId":258,"journal":{"name":"Bioresource Technology","volume":"433 ","pages":"Article 132714"},"PeriodicalIF":9.7,"publicationDate":"2025-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144140972","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Biodegradation of polycyclic aromatic hydrocarbons enhanced by a newly isolated Acinetobacter sp. YY-1 and exogenous quorum sensing signaling molecule N-acyl-homoserine lactones. 新分离的不动杆菌sp. y -1和外源群体感应信号分子n -酰基-高丝氨酸内酯促进多环芳烃的生物降解。

IF 9.7 1区环境科学与生态学

Bioresource Technology Pub Date : 2025-05-23 DOI: 10.1016/j.biortech.2025.132718

Zhixiong Huang, Xiaolong Yu, Yunjie Ma, Jianqiao Wang, Yan Zheng

{"title":"Biodegradation of polycyclic aromatic hydrocarbons enhanced by a newly isolated Acinetobacter sp. YY-1 and exogenous quorum sensing signaling molecule N-acyl-homoserine lactones.","authors":"Zhixiong Huang, Xiaolong Yu, Yunjie Ma, Jianqiao Wang, Yan Zheng","doi":"10.1016/j.biortech.2025.132718","DOIUrl":"https://doi.org/10.1016/j.biortech.2025.132718","url":null,"abstract":"<p><p>Remediation of persistent organic pollutants like polycyclic aromatic hydrocarbons (PAHs) remains a great challenge, but biodegradation offers the best hope. Enhancing bacterial activity is crucial for successful microbe-based remediation. Quorum sensing (QS), a microbial communication mechanism, enables synchronized metabolic activities that may facilitate the adaptation of microbial communities to PAHs-contaminated environments. Its role in degrading two PAHs compounds, phenanthrene and pyrene, is investigated here. Acinetobacter sp. YY-1, newly isolated from activated sludge here, was found to be a QS-regulated PAHs degrader with high PAHs tolerance, maintaining stable bioactivity in the presence of 50-400 mg/L phenanthrene. Genomic analysis of YY-1 identified N-acyl-homoserine lactones (AHLs) synthase and receptor genes, with 2.4 % of genes linked to aromatic compound degradation. PAHs degradation experiment showed that, with the addition of 40 μmol/L exogenous mixed AHLs, YY-1's phenanthrene (100 mg/L) removal rose from 28.4 % to 43.7 % in 7 days, while pyrene (20 mg/L) removal increased from 13.4 % to 36.8 % in 7 days; QS inhibitors reduced the phenanthrene degradation to 16 %. Metabolomics analysis of phenanthrene biodegradation metabolites suggested that exogenous AHLs likely increased the hydrophobicity of YY-1's membrane and stress resilience, thereby enhancing PAHs biodegradation. This study linked the relationship between QS regulation and the enhanced PAHs biodegradation, which offers insights into utilizing QS-mediated biodegraders for enhanced removal of xenobiotic organic pollutants.</p>","PeriodicalId":258,"journal":{"name":"Bioresource Technology","volume":" ","pages":"132718"},"PeriodicalIF":9.7,"publicationDate":"2025-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144141028","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Global transcriptomics reveals carbon footprint of food waste in the bioconversion of ecofriendly polymers 全球转录组学揭示了食物垃圾在生态友好聚合物生物转化中的碳足迹

IF 9.7 1区环境科学与生态学

Bioresource Technology Pub Date : 2025-05-23 DOI: 10.1016/j.biortech.2025.132719

Tianzheng Liu, Kaiming Ye, Sha Jin

{"title":"Global transcriptomics reveals carbon footprint of food waste in the bioconversion of ecofriendly polymers","authors":"Tianzheng Liu, Kaiming Ye, Sha Jin","doi":"10.1016/j.biortech.2025.132719","DOIUrl":"10.1016/j.biortech.2025.132719","url":null,"abstract":"<div><div>Food waste is a major source of environmental pollution, as its landfills attribute to greenhouse gas emissions. This study developed a robust upcycling bioprocess that converts food waste into lactic acid through autochthonous fermentation and further produces biodegradable polymer polyhydroxybutyrate (PHB). Food can be stored without affecting its bioconversion to lactic acid, making it feasible for industrial application. Mapping autochthonous microbiota in the food waste fermentation before and after storage revealed lactic-acid-producing microorganisms dominate during the indigenous fermentation. Furthermore, through global transcriptomic and gene set enrichment analyses, it was discovered that coupling lactic acid as carbon source with ammonium sulfate as nitrogen source in <em>Cupriavidus necator</em> culture upregulates pathways, including PHB biosynthesis, CO<sub>2</sub> fixation, carbon metabolism, pyruvate metabolism, and energy metabolism compared to pairing with ammonium nitrate. There was ∼90 % PHB content in the biomass. Overall, the study provides crucial insights into establishing a bioprocess for food waste repurposing.</div></div>","PeriodicalId":258,"journal":{"name":"Bioresource Technology","volume":"433 ","pages":"Article 132719"},"PeriodicalIF":9.7,"publicationDate":"2025-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144139495","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Understanding diurnal variability in organic matter processing by microalgal-bacterial granular sludge in lake water remediation. 了解湖泊水体修复中微藻-细菌颗粒污泥处理有机物的日变化。

IF 9.7 1区环境科学与生态学

Bioresource Technology Pub Date : 2025-05-23 DOI: 10.1016/j.biortech.2025.132717

Changqing Chen, Yuting Shi, Bingheng Chen, Anjie Li, Quan Meng, Yu Jiang, Bin Ji

{"title":"Understanding diurnal variability in organic matter processing by microalgal-bacterial granular sludge in lake water remediation.","authors":"Changqing Chen, Yuting Shi, Bingheng Chen, Anjie Li, Quan Meng, Yu Jiang, Bin Ji","doi":"10.1016/j.biortech.2025.132717","DOIUrl":"https://doi.org/10.1016/j.biortech.2025.132717","url":null,"abstract":"<p><p>This study investigates the diurnal variability of organic matter removal by microalgal-bacterial granular sludge (MBGS) in lake water remediation. Results showed that daytime removal efficiencies for NH<sub>4</sub><sup>+</sup>-N, NO<sub>3</sub><sup>-</sup>-N, NO<sub>2</sub><sup>-</sup>-N, TN, and TP reached 72.1%, 73.2%, 91.5%, 60.5%, and 52.8%, respectively, exceeding nighttime values of 52.7%, 55.8%, 88.4%, 37.9%, and 39.9%. However, chemical oxygen demand (COD) exhibited a net release during daylight, contrasting with removal during night conditions. Significant microbial community shifts, notably increased Bacteroidota abundance, were driven by fluctuations in dissolved oxygen and organic carbon levels. Additionally, the upregulation of fatty acid metabolism-related genes like paaF and ACSL mechanistically supported COD removal efficiency. These findings suggest that optimizing MBGS operation through diurnal parameter regulation can enhance lake restoration efficacy and provide a theoretical foundation for developing sustainable engineering strategies in aquatic ecosystem management.</p>","PeriodicalId":258,"journal":{"name":"Bioresource Technology","volume":" ","pages":"132717"},"PeriodicalIF":9.7,"publicationDate":"2025-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144141035","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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