Bioresource Technology最新文献_第6页

Unlocking the potential of purple phototrophic bacterial for microbial electrochemical system performance by waste-derived materials. 释放紫色光养细菌在废物来源材料的微生物电化学系统性能方面的潜力。

IF 9 1区环境科学与生态学

Bioresource Technology Pub Date : 2025-10-06 DOI: 10.1016/j.biortech.2025.133450

Yamei Cai, Yolanda Segura, Yaqian Zhao, Amanda Prado de Nicolas, Lola Gonzalez Olias, Daniel Puyol, Asheesh K Yadav, Fernando Martinez

{"title":"Unlocking the potential of purple phototrophic bacterial for microbial electrochemical system performance by waste-derived materials.","authors":"Yamei Cai, Yolanda Segura, Yaqian Zhao, Amanda Prado de Nicolas, Lola Gonzalez Olias, Daniel Puyol, Asheesh K Yadav, Fernando Martinez","doi":"10.1016/j.biortech.2025.133450","DOIUrl":"https://doi.org/10.1016/j.biortech.2025.133450","url":null,"abstract":"Purple Phototrophic Bacteria (PPB), owing to their unique metabolism and electron transfer capabilities, hold great promise for application in microbial electrochemical systems (MES). This study proposes a new strategy by incorporating solid waste-derived materials (HySludge, HyGreen, and HyOrange) produced by HydroThermal Carbonization (HTC), as functional electroactive carbonaceous materials in PPB-based MES. The study focuses on evaluating the impact of these materials on PPB growth, electrochemical reaction, and microbial community composition under both non-polarized and polarized conditions, with Graphite serving as a control. This study addresses 3 core issues: a) the potential of hydrochars to serve as a stable platform for attachment and electron exchange between PPB and electroactive bacteria (EAB); b) the feasibility of achieving effective extracellular electron transfer (EET) through surface functional groups, despite low electrical conductivity of materials; and c) the capacity of hydrochars to generate electron output under light-driven conditions. The results indicate that HySludge (sludge-derived hydrochar) supported efficient PPB growth and nutrient uptake under non-polarized conditions, achieving removal efficiencies of 95.2 % for acetate and 91.9 % for NH4+. Polarization further enhanced the synergistic coexistence of photoelectroactive and EAB communities such as Rhodopseudomonas, Cereibacter, and Pseudomonas in HySludge systems. It achieved complete removal of acetate and NH4+, generated current density of 1.6 A/m3 with a coulombic efficiency of 1.1 %. Although its conductivity is inferior to that of Graphite, HySludge still demonstrated electrochemical functionality and biological compatibility, indicating its potential as a viable alternative to conventional electrode material.","PeriodicalId":258,"journal":{"name":"Bioresource Technology","volume":" ","pages":"133450"},"PeriodicalIF":9.0,"publicationDate":"2025-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145249122","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

Deciphering functional adaptability of Microalgal-Bacterial granular sludge under salicylic acid stress. 解读水杨酸胁迫下微藻-细菌颗粒污泥的功能适应性。

IF 9 1区环境科学与生态学

Bioresource Technology Pub Date : 2025-10-05 DOI: 10.1016/j.biortech.2025.133444

Hua Liang, Wen Pan, Shulian Wang, Anjie Li, Shenbin Cao, Bin Ji

{"title":"Deciphering functional adaptability of Microalgal-Bacterial granular sludge under salicylic acid stress.","authors":"Hua Liang, Wen Pan, Shulian Wang, Anjie Li, Shenbin Cao, Bin Ji","doi":"10.1016/j.biortech.2025.133444","DOIUrl":"https://doi.org/10.1016/j.biortech.2025.133444","url":null,"abstract":"In this study, the impact of salicylic acid (SA), a prevalent non-steroidal anti-inflammatory drug metabolite, on microalgal-bacterial granular sludge (MBGS) systems was systematically investigated. Results demonstrated that the MBGS system exhibited high pollutant removal efficiency in both synthetic and real wastewater containing 1 mg/L SA, achieving 81.6 % organics, 72.3 % nitrogen, and 77.1 % phosphorus removal. This performance was attributed to increased extracellular polymeric substance secretion and the proliferation of stress-tolerant Proteobacteria, Cyanobacteria and Bacteroidota, which helped alleviate SA toxicity. Critically, 1 mg/L SA promoted nitrogen removal through microbial assimilation by modulating the abundance of key functional genes. Further analyses identified SA biodegradation into pyruvate, catechol, and gentisate, with multiple pathways ultimately entering the tricarboxylic acid cycle. This study confirms the efficacy of MBGS for treating SA-contaminated wastewater and highlights its potential as a sustainable strategy for mitigating pharmaceutical and other emerging contaminants in engineered ecosystems.","PeriodicalId":258,"journal":{"name":"Bioresource Technology","volume":" ","pages":"133444"},"PeriodicalIF":9.0,"publicationDate":"2025-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145243414","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

Fungal fermentation: The blueprint for transforming industrial side streams and residues. 真菌发酵：改造工业边流和残留物的蓝图。

IF 9 1区环境科学与生态学

Bioresource Technology Pub Date : 2025-10-04 DOI: 10.1016/j.biortech.2025.133426

Kasra Khatami, Zeinab Qazanfarzadeh, Amparo Jiménez-Quero

{"title":"Fungal fermentation: The blueprint for transforming industrial side streams and residues.","authors":"Kasra Khatami, Zeinab Qazanfarzadeh, Amparo Jiménez-Quero","doi":"10.1016/j.biortech.2025.133426","DOIUrl":"https://doi.org/10.1016/j.biortech.2025.133426","url":null,"abstract":"The escalating generation of industrial side streams and organic residues presents both a challenge and an opportunity for sustainable biotechnological solutions. Filamentous fungi, with their metabolic versatility and ability to secrete a wide spectrum of enzymes, have emerged as promising agents for transforming diverse waste substrates into high-value products within the biorefinery concept. This review explores the multifaceted applications of fungal fermentation (submerged, solid-state, and sequential) for valorizing agri-food, lignocellulosic, and marine residues into mycoproteins, enzymes, biochemicals, biomaterials, and agricultural applications. Emphasis is placed on the scalability, functional diversity, nutritional potential, and environmental relevance of fungal-derived products, particularly in addressing global protein demand, chemicals, materials and sustainable biomanufacturing. Furthermore, challenges, substrate heterogeneity, safety concerns, and emerging tools, such as AI and multi-omics, are discussed in the context of process optimization and regulatory acceptance. This paper highlights fungal fermentation as a pivotal biotechnology tool in advancing circular bioeconomy goals by contributing to sustainable food production, resource recovery, and the development of novel compounds of interest.","PeriodicalId":258,"journal":{"name":"Bioresource Technology","volume":" ","pages":"133426"},"PeriodicalIF":9.0,"publicationDate":"2025-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145237467","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

Converting CO2 from biogas with H2 into acetic acid in a trickle bed bioreactor with Moorella thermoacetica or a homoacetogenic mixed culture 将沼气中的二氧化碳与氢气一起转化为醋酸，在热醋酸摩尔氏菌滴床生物反应器或纯醋酸混合培养基中进行

IF 11.4 1区环境科学与生态学

Bioresource Technology Pub Date : 2025-10-03 DOI: 10.1016/j.biortech.2025.133443

Angana Chaudhuri, Birgitte K. Ahring

{"title":"Converting CO2 from biogas with H2 into acetic acid in a trickle bed bioreactor with Moorella thermoacetica or a homoacetogenic mixed culture","authors":"Angana Chaudhuri, Birgitte K. Ahring","doi":"10.1016/j.biortech.2025.133443","DOIUrl":"https://doi.org/10.1016/j.biortech.2025.133443","url":null,"abstract":"Gaseous fermentation for converting carbon-dioxide (CO<ce:inf loc=\"post\">2</ce:inf>) from biogas with H<ce:inf loc=\"post\">2</ce:inf> into value-added chemicals such as acetic acid offers a sustainable solution compared to chemical upgradation. In this study we compare the performance of <ce:italic>Moorella thermoacetica</ce:italic>, a thermophilic homoacetogen employing the Wood–Ljungdahl pathway, with a mixed rumen culture enriched for homoacetogenic activity. Both cultures were evaluated for CO<ce:inf loc=\"post\">2</ce:inf>/H<ce:inf loc=\"post\">2</ce:inf> conversion efficiency, acetic acid production, and upgrading of biogas and added H<ce:inf loc=\"post\">2</ce:inf> to renewable natural gas (RNG) using a trickle bed reactor (TBR). The mixed culture achieved high hydrogen (H<ce:inf loc=\"post\">2</ce:inf>) conversion (99.4 %), and carbon-dioxide (CO<ce:inf loc=\"post\">2</ce:inf>) conversion 95.1 %, significantly outperforming <ce:italic>M. thermoacetica</ce:italic> in process stability and volumetric productivity, with acetic acid yields reaching 22.3 g/L and biomass productivity of 1.8 g/L/day. Output methane composition of the TBR reached 99.1 %. This work highlights the trade-offs between pure and mixed cultures during gas fermentation, emphasizing the mixed culture’s enhanced productivity and superior stability under fluctuating process conditions of importance for a scalable industrial application.","PeriodicalId":258,"journal":{"name":"Bioresource Technology","volume":"50 1","pages":""},"PeriodicalIF":11.4,"publicationDate":"2025-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145228802","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

Effect of carbonic anhydrase-producing microorganisms on carbonation of steel slag powder under suspension process. 产碳酸酐酶微生物对悬浮法钢渣粉碳酸化的影响。

IF 9 1区环境科学与生态学

Bioresource Technology Pub Date : 2025-10-03 DOI: 10.1016/j.biortech.2025.133437

Yijin Fan, Yangfan Xu, Chunxiang Qian

{"title":"Effect of carbonic anhydrase-producing microorganisms on carbonation of steel slag powder under suspension process.","authors":"Yijin Fan, Yangfan Xu, Chunxiang Qian","doi":"10.1016/j.biortech.2025.133437","DOIUrl":"https://doi.org/10.1016/j.biortech.2025.133437","url":null,"abstract":"Addressing the needs of carbon dioxide capture and waste residue utilization, this study tackles the low reaction rate of existing steel slag carbonation under ambient temperature and pressure, investigating microorganisms' role in the process under suspended reaction conditions. Results show microorganisms significantly accelerate the carbonation rate: the time to reach 10% amount of carbon dioxide fixation is shortened to 1/5 of that of direct carbonation. Key influencing factors include steel slag powder moisture content, reaction humidity, and carbon dioxide concentration. After carbonation, the calcium-silicon phase mainly transforms. Compared with direct carbonation, microorganisms speed up carbon dioxide dissociation-diffusion in the liquid film on steel slag particles, enhance chemical reaction rate, promote carbonation of dicalcium silicate, and improve early-stage carbonation rate. The decrease of the diffusion rate of the product layer is the main rate-limiting step in the later carbon fixation reaction. This study provides process methods and data support for promoting microorganism-assisted steel slag carbonation technology.","PeriodicalId":258,"journal":{"name":"Bioresource Technology","volume":" ","pages":"133437"},"PeriodicalIF":9.0,"publicationDate":"2025-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145231042","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

Comparison of indigenous and exogenous microbiota: necessity of inoculation for lactic acid production. 本地和外源微生物群的比较：乳酸生产接种的必要性。

IF 9 1区环境科学与生态学

Bioresource Technology Pub Date : 2025-10-03 DOI: 10.1016/j.biortech.2025.133439

Yuan Li, Yueji Chen, Zonghai Du, Jinling He, Yurong Zhang, Yonghong Ma, Shuanglan Cheng, Xianbao Xu, Wenjuan Zhang, Ai Zhang, Xiang Li, Xu Duan, Gang Xue, Jacek Makinia

{"title":"Comparison of indigenous and exogenous microbiota: necessity of inoculation for lactic acid production.","authors":"Yuan Li, Yueji Chen, Zonghai Du, Jinling He, Yurong Zhang, Yonghong Ma, Shuanglan Cheng, Xianbao Xu, Wenjuan Zhang, Ai Zhang, Xiang Li, Xu Duan, Gang Xue, Jacek Makinia","doi":"10.1016/j.biortech.2025.133439","DOIUrl":"https://doi.org/10.1016/j.biortech.2025.133439","url":null,"abstract":"Lactic acid (LA) production from food waste fermentation offers a promising route for organic waste valorization and aligns with a circular economy concept. However, the microbial metabolic interactions remain poorly understood. This study demonstrates that regulating indigenous microbiota with eggshell (EG) buffer can achieve efficient LA production (33.2 ± 2.6 g COD/L), a yield only 3.6 % lower than that obtained with anaerobic sludge inoculation. Metabolic pathway analysis indicated that EG addition not only stabilized fermentative pH but also redirected the carbon flux toward LA. High-throughput sequencing showed that homofermentative LA bacteria (Streptococcus and Enterococcus) accounted for 37.3 % of the microbial community under EG addition alone. Additionally, EG modulated genes in the Embden-Meyerhof-Parnas, the hexose monophosphate, and the hexokinase pathway. This study confirms that an EG-buffered fermentation system can activate indigenous microbiota for high-efficiency LA production, demonstrating that exogenous inoculation is non-essential and offering a cost-effective approach for sustainable LA synthesis.","PeriodicalId":258,"journal":{"name":"Bioresource Technology","volume":" ","pages":"133439"},"PeriodicalIF":9.0,"publicationDate":"2025-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145231030","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

Co-feeding phenolic acids with fatty acids for polyhydroxyalkanoate (PHA) synthesis in Pseudomonas putida KT2440 using continuous culture conditions. 在连续培养条件下，在恶臭假单胞菌KT2440中共投喂酚酸与脂肪酸合成聚羟基烷酸酯（PHA）

IF 9 1区环境科学与生态学

Bioresource Technology Pub Date : 2025-10-03 DOI: 10.1016/j.biortech.2025.133409

Mauricio Troncoso-Castellanos, Meg Walsh, Tanja Narancic, Kevin O'Connor

{"title":"Co-feeding phenolic acids with fatty acids for polyhydroxyalkanoate (PHA) synthesis in Pseudomonas putida KT2440 using continuous culture conditions.","authors":"Mauricio Troncoso-Castellanos, Meg Walsh, Tanja Narancic, Kevin O'Connor","doi":"10.1016/j.biortech.2025.133409","DOIUrl":"https://doi.org/10.1016/j.biortech.2025.133409","url":null,"abstract":"Lignin is a promising bioeconomy feedstock for the synthesis of biofuels and biobased chemicals. Pseudomonas putida KT2440, when grown in flasks with two of the main phenolic acids present in lignin (ferulate and p-coumarate), accumulated 33 % of the cell dry weight (CDW) as the biodegradable polymer polyhydroxyalkanoate (PHA). In batch cultures (1-L stirred tank bioreactor) P. putida KT2440 accumulated 37 % of CDW as PHA when supplied with a mixture of sodium- ferulate and p-coumarate (sodium phenolate mixture). Conditions were then switched to continuous fermentation mode, where PHA accumulation (10 % of CDW) was lower compared to batch-grown culture at a dilution rate of 0.1 h-1. However, the PHA productivity of the continuous culture was similar to the batch culture. When the sodium phenolate mixture feed was supplemented with glucose, the PHA titre increased modestly, whereas bacterial biomass remained at a similar level. After the sodium phenolate mixture was supplemented with sodium octanoate (+5 mM), the PHA content of cells increased over threefold under continuous culture growth conditions compared to the sole phenolate mixture. PHA productivity varied depending on the dilution rate of the continuous culture, increasing at lower dilution rates (0.06 h-1). Finally, PHA monomer composition is predominantly (R)-3-hydroxydecanoic acid (C10) when only the sodium phenolate mixture is supplied. This dramatically changed when sodium octanoate was added to the sodium phenolate mixture substrate feed with (R)-3-hydroxyoctanoate (C8) monomers predominating (90 %), suggesting that sodium octanoate is prioritised for PHA synthesis while the phenolic acids are used as energy and biomass sources.","PeriodicalId":258,"journal":{"name":"Bioresource Technology","volume":" ","pages":"133409"},"PeriodicalIF":9.0,"publicationDate":"2025-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145231086","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

Role of the global regulatory factor VeA in Cordyceps militaris and its overexpression combined with tea polyphenols to enhance cordycepin production. 全球调节因子VeA在蛹虫草中的作用及其与茶多酚的过表达促进虫草素的产生

IF 9 1区环境科学与生态学

Bioresource Technology Pub Date : 2025-10-02 DOI: 10.1016/j.biortech.2025.133438

Huanqing Niu, Xuan Xia, Yue Wang, Weiqiang Yang, Zhenyu Wang, Di Zhang, Dong Liu, Yong Chen, Hanjie Ying

{"title":"Role of the global regulatory factor VeA in Cordyceps militaris and its overexpression combined with tea polyphenols to enhance cordycepin production.","authors":"Huanqing Niu, Xuan Xia, Yue Wang, Weiqiang Yang, Zhenyu Wang, Di Zhang, Dong Liu, Yong Chen, Hanjie Ying","doi":"10.1016/j.biortech.2025.133438","DOIUrl":"10.1016/j.biortech.2025.133438","url":null,"abstract":"Cordyceps militaris has recently been regarded as a promising chassis for high-value compound production owing to its advantage in liquid fermentation, while further exploration of genetic targets and exogenous effectors is needed to enhance its productivity. This study presents the first demonstration of the global regulatory factor VeA as a key modulator of morphological development, conidiogenesis, and cordycepin biosynthesis in C. militaris. Furthermore, screening of exogenous effectors identified tea polyphenols as potent metabolic enhancers, which, when combined with veA overexpression, increased cordycepin production by 69.2% during liquid fermentation. Transcriptome analysis further revealed that this synergistic enhancement was associated with elevated metabolic fluxes through the pentose phosphate (PP) pathway and the cordycepin biosynthesis module. This study provides a feasible strategy and mechanism insights into the cooperative use of genetic and chemical interventions for optimizing C. militaris platforms.","PeriodicalId":258,"journal":{"name":"Bioresource Technology","volume":" ","pages":"133438"},"PeriodicalIF":9.0,"publicationDate":"2025-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145228391","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

Light-driven oxygen supersaturation controls microbial resilience in microalgal-bacterial granular sludge systems: Novel intermittent regulation strategy for carbon–neutral wastewater treatment 光驱动氧过饱和控制微藻-细菌颗粒污泥系统中的微生物弹性：碳中性废水处理的新型间歇调节策略

IF 9 1区环境科学与生态学

Bioresource Technology Pub Date : 2025-10-02 DOI: 10.1016/j.biortech.2025.133436

Liaofan Tang , Yufen Xue , Ning Shi , Mingming Gao , Fangying Yu , Wenxin Wang , Yuqing Zhang , Shuguang Wang , Xinhua Wang

{"title":"Light-driven oxygen supersaturation controls microbial resilience in microalgal-bacterial granular sludge systems: Novel intermittent regulation strategy for carbon–neutral wastewater treatment","authors":"Liaofan Tang , Yufen Xue , Ning Shi , Mingming Gao , Fangying Yu , Wenxin Wang , Yuqing Zhang , Shuguang Wang , Xinhua Wang","doi":"10.1016/j.biortech.2025.133436","DOIUrl":"10.1016/j.biortech.2025.133436","url":null,"abstract":"<div><div>Microalgal-bacterial granular sludge (MBGS) enables carbon–neutral wastewater treatment by replacing aeration with photosynthetic oxygen. However, excessive light can induce dissolved oxygen (DO) supersaturation and triggering oxidative stress. This study investigated the effects of lighting mode (continuous vs. intermittent) and light intensity (400 and 800 μmol/m2/s) on MBGS performance over 96 days. At both light intensities, continuous light caused severe DO accumulation (>25 mg O2/L), elevated reactive oxygen species (ROS), and reduced nutrient removal. Intermittent light effectively regulated DO, alleviated ROS stress, enhanced antioxidative enzyme activity, and restored microbial function. Under intermittent light, NH4-N, TN, and PO4-P removal efficiencies reached 99.2 %, 81.5 %, and 94.2 % (400 μmol/m2/s), and 89.7 %, 69.9 %, and 91.5 % (800 μmol/m2/s). Functional genera such as Dechloromonas, Pseudoxanthomonas and Pseudomonas were enriched under intermittent light mode. These results demonstrate that intermittent light is a feasible strategy to mitigate photo-oxygen stress and enhance nutrient removal in aeration-free MBGS systems.</div></div>","PeriodicalId":258,"journal":{"name":"Bioresource Technology","volume":"440 ","pages":"Article 133436"},"PeriodicalIF":9.0,"publicationDate":"2025-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145227661","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

Electrolyte-free electrochemical ammonia stripping integrated with flocculation for efficient nitrogen recovery from swine manure biogas slurry. 无电解电化学氨汽提-絮凝法高效回收猪粪沼液中的氮。

IF 9 1区环境科学与生态学

Bioresource Technology Pub Date : 2025-10-02 DOI: 10.1016/j.biortech.2025.133440

Haorui Zhang, Ahmed Alengebawy, Yuanhao Yang, Zhan Shi, Mohamed Samer, Yanze Zhu, Ping Ai

{"title":"Electrolyte-free electrochemical ammonia stripping integrated with flocculation for efficient nitrogen recovery from swine manure biogas slurry.","authors":"Haorui Zhang, Ahmed Alengebawy, Yuanhao Yang, Zhan Shi, Mohamed Samer, Yanze Zhu, Ping Ai","doi":"10.1016/j.biortech.2025.133440","DOIUrl":"10.1016/j.biortech.2025.133440","url":null,"abstract":"A novel electrochemical ammonia stripping (EAS) technology integrated with flocculation was developed to effectively remove and recover ammonia nitrogen from swine manure biogas slurry (SMBS) without alkali addition or heating. The optimal operational conditions were established by the suspended solids (SS) removal rate, the ammonia nitrogen removal rate (ANRR), and recovery content. The maximum SS removal rate (66 %) was achieved by adding 4 g/L of cationic polyacrylamide at pH 7 with stirring at 1000 rpm for 20 min. The pH of SMBS in the cathode could be raised beyond 12, facilitating the ammonia nitrogen removal and its recovery as (NH4)2SO4. The cathode feeding mode performed better than the anode feeding mode, increasing the ANRR from 57 % to 86 %, and a corresponding enhancement in the recovery content from 172 to 414 mg/kg. Specifically, under a 35 mA/cm2 applied current density, 0.9 L/min aeration flow rate, and 40 % absorbed sulfuric acid concentration, the ANRR reached 91 %, with a recovery content of 1151 mg/kg. The electrolyte-free configuration avoids interference from competing cations, enhancing NH4+ transport and improving ANRR (>90 %), with a recovery content of 1784 mg/kg at an applied current density of 25 mA/cm2. The economic assessment revealed that the electrolyte-free EAS system exhibited the lowest energy consumption at 0.5 kWh/kg N and a cost of $0.06/kg N, representing only 16.5 % of the expenses associated with conventional ammonia stripping. These results confirm the potential of EAS as a sustainable and eco-friendly technology for ammonia nitrogen recovery.","PeriodicalId":258,"journal":{"name":"Bioresource Technology","volume":" ","pages":"133440"},"PeriodicalIF":9.0,"publicationDate":"2025-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145228265","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