Bioresource Technology最新文献

Zero-valent iron coupled with lactic acid bacteria enhances the degradation of p-Nitrophenol in an anoxic–oxic alternated system 零价铁与乳酸菌偶联增强了缺氧-缺氧交替系统对硝基苯酚的降解

IF 11.4 1区环境科学与生态学

Bioresource Technology Pub Date : 2025-07-20 DOI: 10.1016/j.biortech.2025.133015

Anqi Wang, Zishu Zheng, Jun Hou, Xiaozhi Wang, Jun Wu

{"title":"Zero-valent iron coupled with lactic acid bacteria enhances the degradation of p-Nitrophenol in an anoxic–oxic alternated system","authors":"Anqi Wang, Zishu Zheng, Jun Hou, Xiaozhi Wang, Jun Wu","doi":"10.1016/j.biortech.2025.133015","DOIUrl":"https://doi.org/10.1016/j.biortech.2025.133015","url":null,"abstract":"Zero-valent iron (ZVI) has been widely used in Fenton-like reactions but is easily passivated during pollutant degradation. <ce:italic>Lactobacillus acidophilus</ce:italic> (a type of lactic acid bacteria (LAB)) is capable of producing lactic acid (LA) and H<ce:inf loc=\"post\">2</ce:inf>O<ce:inf loc=\"post\">2</ce:inf> under anoxic and oxic conditions, respectively. Thus, it inspires us to build a green recycling system that couples LAB with ZVI (LAB-ZVI) to degrade p-Nitrophenol (p-NP) in an alternated anoxic–oxic system. LAB significantly improve the reactivity of ZVI and achieves long-term stable removal of p-NP. In the anoxic environment, p-NP is reduced to p-Aminophenol (p-AP) by LAB-ZVI, and p-AP is subsequently degraded into smaller molecular structures. The complexation between LA and Fe(Ⅱ/Ⅲ) not only creates a potential difference (ψ) to facilitate the formation of reactive oxygen species (ROS) but also reduces intracellular ROS in LAB. ZVI promotes extracellular production of •OH but extracellular ROS attack does not necessarily lead to cell death. ZVI enhances the secretion of supernatant fluid, thereby improving the •OH scavenging ability of LAB. Additionally, ZVI positively affects the activity of several antioxidant enzymes through the release of Fe(Ⅱ/Ⅲ). Moreover, extracellular polymeric substances (EPS) can slow down the oxidation process by regulating antioxidant enzymes. Overall, this study provides an environmentally friendly scientific guidance for the application of ZVI.","PeriodicalId":258,"journal":{"name":"Bioresource Technology","volume":"660 1","pages":""},"PeriodicalIF":11.4,"publicationDate":"2025-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144664949","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

Enzymatic bio-oxidation technology as novel approach for pretreatment of refractory sulfide ores 酶法生物氧化技术是难处理硫化矿石预处理的新途径

IF 11.4 1区环境科学与生态学

Bioresource Technology Pub Date : 2025-07-19 DOI: 10.1016/j.biortech.2025.133013

Mohammad Hossein Karimi Darvanjooghi, Sara Magdouli, Satinder Kaur Brar

{"title":"Enzymatic bio-oxidation technology as novel approach for pretreatment of refractory sulfide ores","authors":"Mohammad Hossein Karimi Darvanjooghi, Sara Magdouli, Satinder Kaur Brar","doi":"10.1016/j.biortech.2025.133013","DOIUrl":"https://doi.org/10.1016/j.biortech.2025.133013","url":null,"abstract":"This study introduces an innovative low-temperature-adapted process, Enzymatic Bio-oxidation Technology, for recovering gold from refractory sulfide ores. By utilizing glucose oxidase immobilized on modified sawdust, the process enhances pyrite dissolution and gold liberation under suboptimal conditions for traditional bio-oxidation methods. Experiments demonstrated that citric acid carboxylation improved enzyme activity, achieving a maximum of 80 µmol/min at 1 wt% glutaraldehyde concentration, while hydrogen peroxide production peaked at 20–24 °C. Optimized bio-oxidation conditions—100 mM substrate, 5 g immobilized enzyme, 1 g/L Iron(II), and 20 % ore content—resulted in 89.2 % pyrite dissolution for high-grade gold ore sample (HGOS) and 73.4 % for low-grade gold ore sample (LGOS). Subsequent cyanidation achieved maximum 91 % gold recovery within 20 h at pH 10–11, with HGOS exhibiting superior recovery of gold. These results underscore a promising, low-temperature bio-oxidation strategy for sustainable and efficient gold recovery from refractory ores, especially in environments where conventional microogranisms-assisted methods fall short.","PeriodicalId":258,"journal":{"name":"Bioresource Technology","volume":"15 1","pages":""},"PeriodicalIF":11.4,"publicationDate":"2025-07-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144664940","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

NissiResource utilization of penicillin fermentation fungi residue for ectoine production by Halomonas elongata 目的：青霉素发酵菌渣对长绒单胞菌生产外托碱的资源化利用

IF 11.4 1区环境科学与生态学

Bioresource Technology Pub Date : 2025-07-19 DOI: 10.1016/j.biortech.2025.133016

Yuxuan Liu, Sinan Zhang, Guohui Zhang, Yue Zhang, Chen Yang, Zejian Wang, Junxiong Yu, Shiyong Wu

{"title":"NissiResource utilization of penicillin fermentation fungi residue for ectoine production by Halomonas elongata","authors":"Yuxuan Liu, Sinan Zhang, Guohui Zhang, Yue Zhang, Chen Yang, Zejian Wang, Junxiong Yu, Shiyong Wu","doi":"10.1016/j.biortech.2025.133016","DOIUrl":"https://doi.org/10.1016/j.biortech.2025.133016","url":null,"abstract":"Penicillin fermentation fungal residue (PFFR), a hazardous waste with over 90 % organic matter, can pollute the environment if not properly disposed of. In this study, acid/alkaline heat pretreatment was employed to remove antibiotic residues and break down macromolecular compounds into smaller molecules. The hydrolysate contained 17.23 g/L of total amino acids, 5.34 g/L of reducing sugars, and 33.6 g/L of salts. PFFR hydrolysate was then used as the base medium for the halophile Halomonas elongata to produce the high-value compound ectoine. Response surface methodology was used to optimize medium conditions, resulting in a maximum ectoine concentration of 3957.06 ± 214.12 mg/L. Additionally, a cost-effective mixture of corn steep liquor and hydrolysate was employed for fed-batch cultivation, combined with gradient salt shock to optimize fermentation. The final ectoine yield reached 15837.02 ± 422.27 mg/L. This study offers a cost-effective, environmentally friendly, and efficient strategy for the resource utilization of PFFR.","PeriodicalId":258,"journal":{"name":"Bioresource Technology","volume":"94 1","pages":""},"PeriodicalIF":11.4,"publicationDate":"2025-07-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144664939","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

Sustainable vanillin production: Biotechnological advances, catalytic innovations, and integrated assessment 可持续香草醛生产：生物技术进步、催化创新和综合评估

IF 9.7 1区环境科学与生态学

Bioresource Technology Pub Date : 2025-07-19 DOI: 10.1016/j.biortech.2025.133014

Sunel Kumar , Fahim Ullah , Bin Cao , Ding Jiang , Hareef Ahmed Keerio , Shuang Wang

{"title":"Sustainable vanillin production: Biotechnological advances, catalytic innovations, and integrated assessment","authors":"Sunel Kumar , Fahim Ullah , Bin Cao , Ding Jiang , Hareef Ahmed Keerio , Shuang Wang","doi":"10.1016/j.biortech.2025.133014","DOIUrl":"10.1016/j.biortech.2025.133014","url":null,"abstract":"<div><div>Vanillin (4-hydroxy-3-methoxybenzaldehyde) is one of the world’s most commercially important flavour molecules, used across food, fragrance, pharmaceutical, and emerging materials sectors. Global demand far exceeds the supply that can be met by vanilla bean extraction, driving interest in alternative synthetic and biotechnological routes to production. This review traces the evolution of vanillin production from traditional extraction through petro-based synthesis to the latest biotechnological and hybrid chemo-enzymatic processes. Each route utilizes an integrated assessment framework that combines sustainability metrics, economic viability, and technological readiness level (TRL), highlighting recent breakthroughs in metabolic pathway engineering, microbial chassis development, and green catalysis. Plant-derived vanillin accounts for only ∼1.5 % of supply, whereas petro-based synthesis still dominates (∼88 %). Emerging biotechnological processes—now ∼10 % of the market—offer the greatest potential for sustainable scale-up. Our analysis identifies two high-promise avenues: (i) hybrid chemical-enzymatic systems and (ii) consolidated bioprocessing with engineered microbes, both capable of lowering carbon footprint and cost simultaneously. The remaining bottlenecks include enzyme stability, feedstock variability, and downstream purification. The review closes with a strategic research roadmap for academics, industry, and policymakers to accelerate the transition toward economically viable, low-impact vanillin production.</div></div>","PeriodicalId":258,"journal":{"name":"Bioresource Technology","volume":"436 ","pages":"Article 133014"},"PeriodicalIF":9.7,"publicationDate":"2025-07-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144664942","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

Crystal facet optimization in cadmium sulfide/reduced graphene oxide-based photosynthetic biohybrid systems for enhanced light-driven biohydrogen production 基于硫化镉/还原氧化石墨烯的光合生物混合系统晶体面优化，以增强光驱动生物氢生产

IF 9.7 1区环境科学与生态学

Bioresource Technology Pub Date : 2025-07-19 DOI: 10.1016/j.biortech.2025.133017

Xue-Meng Wang , Zhi-Xuan Zhang , Lin Chen , Rong Chen , Wen-Wei Li

{"title":"Crystal facet optimization in cadmium sulfide/reduced graphene oxide-based photosynthetic biohybrid systems for enhanced light-driven biohydrogen production","authors":"Xue-Meng Wang , Zhi-Xuan Zhang , Lin Chen , Rong Chen , Wen-Wei Li","doi":"10.1016/j.biortech.2025.133017","DOIUrl":"10.1016/j.biortech.2025.133017","url":null,"abstract":"<div><div>The development of photosynthetic biohybrid systems (PBSs) integrating inorganic light absorbers with non-photosynthetic bacteria innovate wastewater valorization via organics bioconversion, yet interfacial electron transfer bottlenecks limit efficiency. To address this, we regulated crystal facet exposure ratios in cadmium sulfide/reduced graphene oxide (CdS/RGO) through hydrothermal synthesis time control, observing facet-dependent activity trends. The optimized biohybrid achieved a maximum hydrogen yield of 2195.3 μmol (233.6 µmol·g<sup>−1</sup>·h<sup>−1</sup> over 8 h), representing a 295 % enhancement over unmodified PBSs. Density functional theory (DFT) calculations revealed that increased exposure of high-activity (103) and (112) facets correlated with reduced work function values, promoting electron emission. Synergistically combined with RGO’s electron-shuttling function, this facilitated charge transfer to bacterial outer membrane proteins. These results demonstrate facet engineering as a tunable strategy for enhancing electron donation capacity in PBSs, offering design principles for biohybrid systems.</div></div>","PeriodicalId":258,"journal":{"name":"Bioresource Technology","volume":"436 ","pages":"Article 133017"},"PeriodicalIF":9.7,"publicationDate":"2025-07-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144664941","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-utilizing tofu whey with food waste digestate enhances techno-economic feasibility of microalgal single-cell protein production 豆腐乳清与食物垃圾消化液的复合利用提高了微藻单细胞蛋白生产的技术经济可行性

IF 11.4 1区环境科学与生态学

Bioresource Technology Pub Date : 2025-07-18 DOI: 10.1016/j.biortech.2025.133011

Sheetal Kishor Parakh, Yen Wah Tong

{"title":"Co-utilizing tofu whey with food waste digestate enhances techno-economic feasibility of microalgal single-cell protein production","authors":"Sheetal Kishor Parakh, Yen Wah Tong","doi":"10.1016/j.biortech.2025.133011","DOIUrl":"https://doi.org/10.1016/j.biortech.2025.133011","url":null,"abstract":"Food waste digestate is a promising substrate for microalgal single-cell protein (SCP) production, but its dark color, high turbidity, elevated ammoniacal nitrogen, and salt content impede microalgae growth. Dilution with freshwater alleviates these issues but concurrently lowers essential nutrient concentrations, limiting biomass yield. This study evaluated tofu whey as an alternative diluent. Using 0.2 μm-filtered digestate at 10 % dilution, <ce:italic>Chlorella sorokiniana</ce:italic> achieved 0.4 g/L biomass, which increased to 2.0 g/L with synthetic nutrient supplementation. Completely replacing freshwater and synthetic nutrients with tofu whey further enhanced biomass concentration to 2.7 g/L, while lowering cultivation costs by 66 % relative to the conventional Bold’s Basal Medium. The resulting biomass contained up to 62 % protein (dry weight) and was free from toxic heavy metals, supporting its suitability as SCP. These findings demonstrate that tofu whey improves digestate utilization for microalgal SCP production, promotes cost savings, and advances sustainable nutrient recycling in the circular bioeconomy.","PeriodicalId":258,"journal":{"name":"Bioresource Technology","volume":"109 1","pages":""},"PeriodicalIF":11.4,"publicationDate":"2025-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144664943","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

Comprehensive evaluation framework for compost maturity with biochar amendment 生物炭改性堆肥成熟度综合评价框架

IF 9.7 1区环境科学与生态学

Bioresource Technology Pub Date : 2025-07-17 DOI: 10.1016/j.biortech.2025.132970

Jianmei Zou , Yihao Hua , Yushu Cheng , Lingyue Zhang , Huichun Zhang , Fei Shen

{"title":"Comprehensive evaluation framework for compost maturity with biochar amendment","authors":"Jianmei Zou , Yihao Hua , Yushu Cheng , Lingyue Zhang , Huichun Zhang , Fei Shen","doi":"10.1016/j.biortech.2025.132970","DOIUrl":"10.1016/j.biortech.2025.132970","url":null,"abstract":"<div><div>A predictive framework combining machine learning and weighting techniques was established to resolve inconsistencies in maturity evaluation of biochar-amended composting. The results indicated that the nonlinear model showed superior compost maturity prediction accuracy. Specifically, Gradient boosting (GB), extra trees (ET, used for both GI and NO<sub>3</sub><sup>–</sup>-N), and extreme gradient boosting (XGB) achieved the highest R<sup>2</sup> values for C/N ratio (0.84), GI (0.64), NO<sub>3</sub><sup>–</sup>-N (0.77), and NH<sub>4</sub><sup>+</sup>-N (0.81), respectively. SHAP analysis identified composting process parameters such as moisture content (MC_P), temperature (TEMP_P), and pH (pH_P) as key drivers of enzymatic activity and microbial succession, significantly affecting maturity. The model’s applicability and predictive capability were validated through cosine similarity and real-world composting experiments. An integrated maturity score, based on weighted predicted indicators, highlighted GI as the most influential factor (47.62 %). This framework enhances intelligent composting, safer agriculture, and environmental management through predictive accuracy and systematic evaluation.</div></div>","PeriodicalId":258,"journal":{"name":"Bioresource Technology","volume":"436 ","pages":"Article 132970"},"PeriodicalIF":9.7,"publicationDate":"2025-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144664989","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

Cell wall engineering-guided strategy for high-efficiency biosynthesis of nutrient-fortified Fusarium venenatum mycoprotein 以细胞壁工程为导向的营养强化镰刀菌真菌蛋白的高效生物合成策略

IF 9.7 1区环境科学与生态学

Bioresource Technology Pub Date : 2025-07-17 DOI: 10.1016/j.biortech.2025.133005

Xiaohui Wu , Zhitong Zhou , Shijun Luo , Yanan Wang , Mingqian Yang , Yaru Chen , Guocheng Du , Jian Chen , Xiao Liu

{"title":"Cell wall engineering-guided strategy for high-efficiency biosynthesis of nutrient-fortified Fusarium venenatum mycoprotein","authors":"Xiaohui Wu , Zhitong Zhou , Shijun Luo , Yanan Wang , Mingqian Yang , Yaru Chen , Guocheng Du , Jian Chen , Xiao Liu","doi":"10.1016/j.biortech.2025.133005","DOIUrl":"10.1016/j.biortech.2025.133005","url":null,"abstract":"<div><div><em>Fusarium venenatum</em> (<em>F. venenatum</em>) mycoprotein is an effective solution to the worldwide protein crisis, however, the efficacy in substrate conversion, protein biosynthesis, and nutrient digestion is limited by redundant components like chitin. In this study, the <em>F. venenatum</em> cell wall was streamlined through genetic engineering by deleting the <em>Chs</em> encoding chitin synthase. The results showed that compared with the wild-type (WT) strain, the protein content of the engineered strain (<em>ΔFvChs</em>, FC02) increased from 35.30 % to 54.12 %, chitin content dropped from 8.56 % to 6.29 %. The glucose-protein conversion rate of FC02 was higher than WT in the 20 L fermenter. During <em>in vitro</em> dynamic digestion, the gastric half-emptying time of FC02 mycoprotein was 10.48 min faster than WT, with significantly higher protein digestibility and essential amino acid index. These results suggest that the mycelial structure can be genetically engineered to create functional foods with controlled digestibility, while guiding the production of high-quality mycoproteins.</div></div>","PeriodicalId":258,"journal":{"name":"Bioresource Technology","volume":"436 ","pages":"Article 133005"},"PeriodicalIF":9.7,"publicationDate":"2025-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144657048","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

Mechanistic insights into enhanced volatile pyridine biodegradation through shortcut pyridine-N transformation in counter-diffusion biofilms by regulating biofilm stratification and microbial spatial interactions 通过调节生物膜分层和微生物空间相互作用，通过反扩散生物膜中的短程吡啶- n转化增强挥发性吡啶生物降解的机理

IF 11.4 1区环境科学与生态学

Bioresource Technology Pub Date : 2025-07-17 DOI: 10.1016/j.biortech.2025.133010

Peng Zheng, Yan Li, Youpeng Cheng, Jing Wang, Yixuan Wang, Yang Mu, Jinyou Shen

{"title":"Mechanistic insights into enhanced volatile pyridine biodegradation through shortcut pyridine-N transformation in counter-diffusion biofilms by regulating biofilm stratification and microbial spatial interactions","authors":"Peng Zheng, Yan Li, Youpeng Cheng, Jing Wang, Yixuan Wang, Yang Mu, Jinyou Shen","doi":"10.1016/j.biortech.2025.133010","DOIUrl":"https://doi.org/10.1016/j.biortech.2025.133010","url":null,"abstract":"Air pollution and nitrogen contamination residues remain challenges in the conventional biological treatment of industrial wastewater containing volatile organic compounds. In this study, counter-diffusion biofilms were integrated with shortcut nitrification–denitrification technology to enhance pyridine biodegradation through shortcut pyridine-N transformation (EPB-SPNT), with emphasis on biofilm stratification and microbial spatial interactions. Results showed that the removal efficiency of pyridine and total nitrogen reached 100 % and 91.24 ± 0.75 %, respectively. Fluorescence in situ hybridization and metagenomic analysis revealed that aerobic pyridine-degrading bacteria (APDB, <ce:italic>Alicycliphilus</ce:italic>) and ammonia-oxidizing bacteria (AOB, <ce:italic>Nitrosomonas</ce:italic>) were located in the aerobic layer, while anoxic pyridine degrading-denitrifying bacteria (APD-DB, <ce:italic>Paracoccus</ce:italic>) were enriched in the anoxic layer. Biofilm stability was mainly attributed to the lower hydrophilicity of protein secondary structure. The EPB-SPNT process was driven by the spatial cooperation among APDB, AOB, and APD-DB. These findings demonstrate the feasibility of implementing the EPB-SPNT in counter-diffusion biofilms through the regulation of microbial stratification and interactions.","PeriodicalId":258,"journal":{"name":"Bioresource Technology","volume":"50 1","pages":"133010"},"PeriodicalIF":11.4,"publicationDate":"2025-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144664945","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

Valorization of aromatic hydrocarbons into polyhydroxyalkanoates: advances towards sustainable waste gas treatment 芳烃活化成聚羟基烷酸酯：可持续废气处理的研究进展

IF 11.4 1区环境科学与生态学

Bioresource Technology Pub Date : 2025-07-17 DOI: 10.1016/j.biortech.2025.132991

Nicolás Díaz-Moreno, Cecilia Lobos, Andrea Carvajal, Ignacio Poblete, Sara Cantera, Raquel Lebrero

{"title":"Valorization of aromatic hydrocarbons into polyhydroxyalkanoates: advances towards sustainable waste gas treatment","authors":"Nicolás Díaz-Moreno, Cecilia Lobos, Andrea Carvajal, Ignacio Poblete, Sara Cantera, Raquel Lebrero","doi":"10.1016/j.biortech.2025.132991","DOIUrl":"https://doi.org/10.1016/j.biortech.2025.132991","url":null,"abstract":"Benzene, toluene, ethylbenzene, xylene and styrene (BTEXS) are priority gaseous pollutants due to their widespread release and health risks. This study demonstrates an efficient BTEXS bioconversion process into polyhydroxyalkanoates (PHA) using a specialized mixed microbial culture dominated by <ce:italic>Pseudonocardia</ce:italic> and <ce:italic>Rhodococcus</ce:italic>. The consortium achieved simultaneous degradation rates of 15.1 ± 3.9 g m<ce:sup loc=\"post\">−3</ce:sup>h<ce:sup loc=\"post\">−1</ce:sup> for toluene and 17.6 ± 5.7 g m<ce:sup loc=\"post\">−3</ce:sup>h<ce:sup loc=\"post\">−1</ce:sup> for ethylbenzene, with removal efficiencies over 90 %. The operating strategy promoted PHA accumulation up to 21.4 % g<ce:inf loc=\"post\">PHA</ce:inf> g<ce:inf loc=\"post\">DCW</ce:inf><ce:sup loc=\"post\">−1</ce:sup>. A two-step process was successfully implemented consisting of an initial reactor for biomass growth followed by a second reactor under nitrogen deprivation. PHA analysis revealed the synthesis of poly(3-hydroxybutyrate-<ce:italic>co</ce:italic>-3-hydroxyvalerate) copolymer with a dynamic increase in 3-hydroxyvalerate content under prolonged nitrogen starvation. Metagenomics provided insights into the microbial networks and metabolic pathways involved in the process. This research offers a sustainable solution for mitigating BTEXS pollution while producing valuable bioplastics","PeriodicalId":258,"journal":{"name":"Bioresource Technology","volume":"28 1","pages":"132991"},"PeriodicalIF":11.4,"publicationDate":"2025-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144664946","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