Biodegradation最新文献

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Correction: Enterobacter cloacae-mediated polymer biodegradation: in-silico analysis predicts broad spectrum degradation potential by Alkane monooxygenase 更正:泄殖腔肠杆菌介导的聚合物生物降解:硅内分析预测了烷烃单加氧酶的广谱降解潜力。
IF 3.1 4区 生物学
Biodegradation Pub Date : 2024-09-25 DOI: 10.1007/s10532-024-10095-0
Mohamed Shafana Farveen, Rajnish Narayanan
{"title":"Correction: Enterobacter cloacae-mediated polymer biodegradation: in-silico analysis predicts broad spectrum degradation potential by Alkane monooxygenase","authors":"Mohamed Shafana Farveen, Rajnish Narayanan","doi":"10.1007/s10532-024-10095-0","DOIUrl":"10.1007/s10532-024-10095-0","url":null,"abstract":"","PeriodicalId":486,"journal":{"name":"Biodegradation","volume":"35 6","pages":"1009 - 1009"},"PeriodicalIF":3.1,"publicationDate":"2024-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142338775","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Correction: Association of Laccase from Bacillus cereus O2-B and Pseudomonas aeruginosa O1-P with the bio-degradation of polymers: an in vitro to in silico approach 更正:蜡样芽孢杆菌 O2-B 和铜绿假单胞菌 O1-P 的漆酶与聚合物生物降解的关系:一种从体外到硅学的方法。
IF 3.1 4区 生物学
Biodegradation Pub Date : 2024-09-12 DOI: 10.1007/s10532-024-10094-1
Mohamed Shafana Farveen, Thirumurthy Madhavan, Rajnish Narayanan
{"title":"Correction: Association of Laccase from Bacillus cereus O2-B and Pseudomonas aeruginosa O1-P with the bio-degradation of polymers: an in vitro to in silico approach","authors":"Mohamed Shafana Farveen, Thirumurthy Madhavan, Rajnish Narayanan","doi":"10.1007/s10532-024-10094-1","DOIUrl":"10.1007/s10532-024-10094-1","url":null,"abstract":"","PeriodicalId":486,"journal":{"name":"Biodegradation","volume":"35 6","pages":"1007 - 1007"},"PeriodicalIF":3.1,"publicationDate":"2024-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142278426","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Developing a microbial community structure index (MCSI) as an approach to evaluate and optimize bioremediation performance 开发微生物群落结构指数(MCSI),作为评估和优化生物修复性能的一种方法。
IF 3.1 4区 生物学
Biodegradation Pub Date : 2024-07-17 DOI: 10.1007/s10532-024-10093-2
Jeff Gamlin, Renee Caird, Neha Sachdeva, Yu Miao, Claudia Walecka-Hutchison, Shaily Mahendra, Susan K. De Long
{"title":"Developing a microbial community structure index (MCSI) as an approach to evaluate and optimize bioremediation performance","authors":"Jeff Gamlin,&nbsp;Renee Caird,&nbsp;Neha Sachdeva,&nbsp;Yu Miao,&nbsp;Claudia Walecka-Hutchison,&nbsp;Shaily Mahendra,&nbsp;Susan K. De Long","doi":"10.1007/s10532-024-10093-2","DOIUrl":"10.1007/s10532-024-10093-2","url":null,"abstract":"<div><p>Much attention is placed on organohalide-respiring bacteria (OHRB), such as <i>Dehalococcoides</i>, during the design and performance monitoring of chlorinated solvent bioremediation systems. However, many OHRB cannot function effectively without the support of a diverse group of other microbial community members (MCMs), who play key roles fermenting organic matter into more readily useable electron donors, producing corrinoids such as vitamin B12, or facilitating other important metabolic processes or biochemical reactions. While it is known that certain MCMs support dechlorination, a metric considering their contribution to bioremediation performance has yet to be proposed. Advances in molecular biology tools offer an opportunity to better understand the presence and activity of specific microbes, and their relation to bioremediation performance. In this paper, we test the hypothesis that a specific microbial consortium identified within 16S ribosomal ribonucleic acid (rRNA) gene next generation sequencing (NGS) data can be predictive of contaminant degradation rates. Field-based data from multiple contaminated sites indicate that increasing relative abundance of specific MCMs correlates with increasing first-order degradation rates. Based on these results, we present a framework for computing a simplified metric using NGS data, the <i>Microbial Community Structure Index</i>, to evaluate the adequacy of the microbial ecosystem during assessment of bioremediation performance.</p><h3>Graphical Abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":486,"journal":{"name":"Biodegradation","volume":"35 6","pages":"993 - 1006"},"PeriodicalIF":3.1,"publicationDate":"2024-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141625601","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Delineating acetaminophen biodegradation kinetics and metabolomics using bacterial community 利用细菌群落划分对乙酰氨基酚生物降解动力学和代谢组学。
IF 3.1 4区 生物学
Biodegradation Pub Date : 2024-07-13 DOI: 10.1007/s10532-024-10090-5
Bhavana Pandey, Suresh Kumar Dubey
{"title":"Delineating acetaminophen biodegradation kinetics and metabolomics using bacterial community","authors":"Bhavana Pandey,&nbsp;Suresh Kumar Dubey","doi":"10.1007/s10532-024-10090-5","DOIUrl":"10.1007/s10532-024-10090-5","url":null,"abstract":"<div><p>Acetaminophen [N-(4-hydroxyphenyl) acetamide, APAP] is an extensively and frequently consumed over-the-counter analgesic and antiphlogistic medication. It is being regarded as an emerging pollutant due to its continuous increment in the environment instigating inimical impacts on humans and the ecosystem. Considering its wide prevalence in the environment, there is an immense need of appropriate methods for the removal of APAP. The present study indulged screening and isolation of APAP degrading bacterial strains from pharmaceuticals-contaminated sites, followed by their molecular characterization via 16S rRNA sequencing. The phylogenetic analyses assigned the isolates to the genera <i>Pseudomonas, Bacillus, Paracoccus, Agrobacterium, Brucella, Escherichia, and Enterobacter</i> based on genetic relatedness. The efficacy of these strains in batch cultures tested through High-performance Liquid Chromatography (HPLC) revealed <i>Paracoccus</i> sp. and <i>Enterobacter</i> sp. as the most promising bacterial isolates degrading up to 88.96 and 85.92%, respectively of 300 mg L<sup>−1</sup> of APAP within 8 days of incubation. Michaelis–Menten kinetics model parameters also elucidated the high degradation potential of these isolates. The major metabolites identified through FTIR and GC–MS analyses were 4-aminophenol, hydroquinone, and 3-hydroxy-2,4-hexadienedioic. Therefore, the outcomes of this comprehensive investigation will be of paramount significance in formulating strategies for the bioremediation of acetaminophen-contaminated sites through a natural augmentation process via native bacterial strains.</p></div>","PeriodicalId":486,"journal":{"name":"Biodegradation","volume":"35 6","pages":"951 - 967"},"PeriodicalIF":3.1,"publicationDate":"2024-07-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141603140","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Enterobacter cloacae-mediated polymer biodegradation: in-silico analysis predicts broad spectrum degradation potential by Alkane monooxygenase 泄殖腔肠杆菌介导的聚合物生物降解:硅内分析预测了烷烃单加氧酶的广谱降解潜力。
IF 3.1 4区 生物学
Biodegradation Pub Date : 2024-07-13 DOI: 10.1007/s10532-024-10091-4
Shafana Farveen Mohamed, Rajnish Narayanan
{"title":"Enterobacter cloacae-mediated polymer biodegradation: in-silico analysis predicts broad spectrum degradation potential by Alkane monooxygenase","authors":"Shafana Farveen Mohamed,&nbsp;Rajnish Narayanan","doi":"10.1007/s10532-024-10091-4","DOIUrl":"10.1007/s10532-024-10091-4","url":null,"abstract":"<div><p>Plastic pollution poses a significant environmental challenge. In this study, the strain <i>Enterobacter cloacae</i> O5-E, a bacterium displaying polyethylene-degrading capabilities was isolated. Over a span of 30 days, analytical techniques including x-ray diffractometry, scanning electron microscopy, optical profilometry, hardness testing and mass spectrometric analysis were employed to examine alterations in the polymer. Results revealed an 11.48% reduction in crystallinity, a 50% decrease in hardness, and a substantial 25-fold increase in surface roughness resulting from the pits and cracks introduced in the polymer by the isolate. Additionally, the presence of degradational by-products revealed via gas chromatography ascertains the steady progression of degradation. Further, recognizing the pivotal role of alkane monooxygenase in plastic degradation, the study expanded to detect this enzyme in the isolate molecularly. Molecular docking studies were conducted to assess the enzyme’s affinity with various polymers, demonstrating notable binding capability with most polymers, especially with polyurethane (− 5.47 kcal/mol). These findings highlight the biodegradation potential of <i>Enterobacter cloacae</i> O5-E and the crucial involvement of alkane monooxygenase in the initial steps of the degradation process, offering a promising avenue to address the global plastic pollution crisis.</p><h3>Graphical abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":486,"journal":{"name":"Biodegradation","volume":"35 6","pages":"969 - 991"},"PeriodicalIF":3.1,"publicationDate":"2024-07-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141603141","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Biodegradable plastics: mechanisms of degradation and generated bio microplastic impact on soil health 生物降解塑料:降解机制和生物微塑料对土壤健康的影响。
IF 3.1 4区 生物学
Biodegradation Pub Date : 2024-07-10 DOI: 10.1007/s10532-024-10092-3
Rishpreet Kaur, Indu Chauhan
{"title":"Biodegradable plastics: mechanisms of degradation and generated bio microplastic impact on soil health","authors":"Rishpreet Kaur,&nbsp;Indu Chauhan","doi":"10.1007/s10532-024-10092-3","DOIUrl":"10.1007/s10532-024-10092-3","url":null,"abstract":"<div><p>Conventional petroleum-derived polymers are valued for their versatility and are widely used, owing to their characteristics such as cost-effectiveness, diverse physical and chemical qualities, lower molecular weight, and easy processability for large-scale production. However, the extensive accumulation of such plastics leads to serious environmental issues. To combat this existing situation, an alternative lies in the production of bioplastics from natural and renewable sources such as plants, animals, microbes, etc. Bioplastics obtained from renewable sources are compostable and susceptible to degradation caused by microbes hydrolyzing to CO<sub>2</sub>, CH<sub>4,</sub> and biomass. Also, certain additives are reinforced into the bioplastic films to improve their physicochemical properties and degradation rate. However, on degradation, the bio-microplastic (BM) produced could have positive as well as negative impact on the soil health. This article thus focuses on the degradation of various fossil based as well as bio based biodegradable plastics such as polyhydroxyalkanoates (PHA), polyhydroxy butyrate (PHB), polylactic acid (PLA), polybutylene succinate (PBS), polycaprolactone (PCL), and polysaccharide derived bioplastics by mechanical, thermal, photodegradation and microbial approaches. The degradation mechanism of each approach has been discussed in detailed for different bioplastics. How the incorporation or reinforcement of various additives in the biodegradable plastics effects their degradation rates has also been discussed. In addition to that, the impact of generated bio-microplastic on physicochemical properties of soil such as pH, bulk density, carbon, nitrogen content etc. and biological properties such as on genome of native soil microbes and on plant nutritional health have been discussed in detailed.</p><h3>Graphical Abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":486,"journal":{"name":"Biodegradation","volume":"35 6","pages":"863 - 892"},"PeriodicalIF":3.1,"publicationDate":"2024-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141562327","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Alternative green application areas for olive pomace catalytic pyrolysis biochar obtained via marble sludge catalyst 通过大理石污泥催化剂获得的橄榄渣催化热解生物炭的其他绿色应用领域。
IF 3.1 4区 生物学
Biodegradation Pub Date : 2024-07-01 DOI: 10.1007/s10532-024-10088-z
Gamze Goktepeli, Afra Ozgan, Vildan Onen, Gulnare Ahmetli, Merve Kalem, Esra Yel
{"title":"Alternative green application areas for olive pomace catalytic pyrolysis biochar obtained via marble sludge catalyst","authors":"Gamze Goktepeli,&nbsp;Afra Ozgan,&nbsp;Vildan Onen,&nbsp;Gulnare Ahmetli,&nbsp;Merve Kalem,&nbsp;Esra Yel","doi":"10.1007/s10532-024-10088-z","DOIUrl":"10.1007/s10532-024-10088-z","url":null,"abstract":"<div><p>Evaluating industrial wastes in the system with minimum preprocessing and generation economically valuable products from them have critical importance. In this regard, especially cheap, wieldy, and readily available catalysts have been researched to increase variety of useful products in pyrolysis systems, to reduce process time, and to increase quality and diversity of products. Therefore, in this study, marble sludge (named K1) was evaluated as catalyst at different dosages (10%, 20%, 30%, 50%) and pyrolysis temperatures (300, 500, 700 °C) in olive pomace (OP) pyrolysis and; the potential green applications of produced new biochars at new usage areas with different purposes based on characteristics were investigated. ANOVA test results showed that temperature and catalysts ratio had significant effect on pyrolysis product yields since significance value for K1 and temperature was lower than 0.05 for pyrolysis products. OP-K1 biochars had alkaline properties and high earth metal quantities. Moreover, increment in K1 ratio and temperature resulted in decrement of the biochar surface acidity. Therefore, it can be indicated that these biochars can have a potential usage for anaerobic digestion processes, lithium-ion batteries, and direct carbon solid oxide fuel cell (DC-SOFC) but further electrochemical property test should be performed. Moreover, produced biochars can be alternative fuels in some processes instead of coal since they have low S content and high heat values. Consequently, it is foreseen that produced biochars will have an important place in the development of potential usage areas with a new and environmentally friendly approach in different areas apart from the conventional uses of catalytic pyrolysis chars.</p><h3>Graphical abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":486,"journal":{"name":"Biodegradation","volume":"35 6","pages":"907 - 938"},"PeriodicalIF":3.1,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10532-024-10088-z.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141490371","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Enhancing biodegradation of aged hydrocarbon-contaminated soils through toluene addition: assessing effects on solid and slurry phase treatments 通过添加甲苯加强受碳氢化合物污染的老化土壤的生物降解:评估固相和浆相处理的效果。
IF 3.1 4区 生物学
Biodegradation Pub Date : 2024-06-23 DOI: 10.1007/s10532-024-10089-y
M. E. Maya-Yescas, M. Gutiérrez-Rojas†, M. García-Rivero
{"title":"Enhancing biodegradation of aged hydrocarbon-contaminated soils through toluene addition: assessing effects on solid and slurry phase treatments","authors":"M. E. Maya-Yescas,&nbsp;M. Gutiérrez-Rojas†,&nbsp;M. García-Rivero","doi":"10.1007/s10532-024-10089-y","DOIUrl":"10.1007/s10532-024-10089-y","url":null,"abstract":"<div><p>The main challenge in treating aged soils highly contaminated with total petroleum hydrocarbons (TPH) is to enhance their bioavailability for microbial degradation. Hydrocarbons in soils undergo chemical changes that make them more resistant to biodegradation. This study investigates toluene’s efficacy in enhancing the biodegradation of aged hydrocarbon-contaminated soil containing 292,000 mg TPH kg<sup>−1</sup> dry soil. Toluene’s effect was compared between solid phase (SOP) and slurry phase (SLP) treatments using a microbial consortium isolated from <i>Cyperus laxus</i> rhizosphere. TPH biodegradation and microbial respiration were measured, the latter to estimate the respiratory quotient (RQ, the ratio between moles of carbon dioxide released and moles of oxygen absorbed during respiration). Toluene significantly accelerated TPH biodegradation in both treatments, achieving ~ 30% higher removal than in a non-solvent control, possibly through improved bioavailability of aromatic compounds and other low molecular weight compounds. According to the RQ analysis, toluene enhanced microbial respiratory processes and hydrocarbon catabolism with higher hydrocarbon mineralization (RQ =  ~ 0.5) in both SOP and SLP assays. Our results reveal toluene's potential to increase hydrocarbon availability and microbial degradation efficiency in aged contaminated soils; its use in various bioremediation techniques could be of broad applicability across diverse soil types and pollutants.</p></div>","PeriodicalId":486,"journal":{"name":"Biodegradation","volume":"35 6","pages":"939 - 949"},"PeriodicalIF":3.1,"publicationDate":"2024-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141441909","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Sustainable kitchen wastewater treatment with electricity generation using upflow biofilter-microbial fuel cell system 利用上流式生物滤池-微生物燃料电池系统发电,实现可持续的厨房废水处理。
IF 3.1 4区 生物学
Biodegradation Pub Date : 2024-06-22 DOI: 10.1007/s10532-024-10087-0
Ahmed Y. Radeef, Aya A. Najim, Haneen A. Karaghool, Zaid H. Jabbar
{"title":"Sustainable kitchen wastewater treatment with electricity generation using upflow biofilter-microbial fuel cell system","authors":"Ahmed Y. Radeef,&nbsp;Aya A. Najim,&nbsp;Haneen A. Karaghool,&nbsp;Zaid H. Jabbar","doi":"10.1007/s10532-024-10087-0","DOIUrl":"10.1007/s10532-024-10087-0","url":null,"abstract":"<div><p>The microbial fuel cell (MFC) is considered a modern technology used for treating wastewater and recovering electrical energy. In this study, a new dual technology combining MFC and a specialized biofilter was used. The anodic materials in the system were crushed graphite, either without coating (UFB-MFC) or coated with nanomaterials (nano-UFB-MFC). This biofilter served as a barrier to retain and remove turbidity and suspended solids, while also facilitating the role of bacteria in the removal of organic pollutants, phosphates, nitrates, sulfates, oil and greases. The results demonstrated that both systems exhibited high efficiency in treating kitchen wastewater, specifically greywater and dishwashing wastewater with high detergent concentrations. The removal efficiencies of COD, oil and grease, suspended solids, turbidity, nitrates, sulfates, and phosphates in first UFB-MFC were found to be 88, 95, 89, 86, 87, 75, and 94%, respectively, and in Nano-UFB-MFC were 86, 99, 95, 91, 81, 88, and 95%, respectively, with a high efficiency in recovering bioenergy reaching a value of 1.8 and 1.5 A m<sup>−3</sup>, respectively. The results of this study demonstrate the potential for developing MFC and utilizing it as a domestic system to mitigate pollution risks before discharging wastewater into the sewer network.</p></div>","PeriodicalId":486,"journal":{"name":"Biodegradation","volume":"35 6","pages":"893 - 906"},"PeriodicalIF":3.1,"publicationDate":"2024-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141439976","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A novel coupling process to replace the traditional multi-stage anammox process—sulfur autotrophic denitrification coupled anammox system 取代传统多级氨氧化工艺的新型耦合工艺--硫自养反硝化耦合氨氧化系统。
IF 3.1 4区 生物学
Biodegradation Pub Date : 2024-06-06 DOI: 10.1007/s10532-024-10077-2
Sai Yao, Kuo Zhang, Song Yang, Zijun Li, Youzhao Wang, Feng Ma, Pu Chen, Tong Zhu
{"title":"A novel coupling process to replace the traditional multi-stage anammox process—sulfur autotrophic denitrification coupled anammox system","authors":"Sai Yao,&nbsp;Kuo Zhang,&nbsp;Song Yang,&nbsp;Zijun Li,&nbsp;Youzhao Wang,&nbsp;Feng Ma,&nbsp;Pu Chen,&nbsp;Tong Zhu","doi":"10.1007/s10532-024-10077-2","DOIUrl":"10.1007/s10532-024-10077-2","url":null,"abstract":"<div><p>A novel coupling process to replace the traditional multi-stage anammox process—sulfur autotrophic denitrification (SAD) coupled anaerobic ammonium oxidation (anammox) system was designed, which solved problems of nitrate produced in anammox process and low nitrate conversion rate caused by nitrite accumulation in SAD process. Different filter structures (SAD filter and anammox granular sludge) were investigated to further explore the excellent performance of the novel integrated reactor. The results of sequential batch experiments indicated that nitrite accumulation occurred during SAD, which inhibited the conversion of nitrate to dinitrogen gas. When SAD filter and anammox granular sludge were added to packed bed reactor simultaneously, the nitrate removal rate increased by 37.21% and effluent nitrite concentration decreased by 100% compared to that achieved using SAD. The stratified filter structure solved groove flow. Different proportion influence of SAD filter and anammox granular sludge on the stratified filter structure was evaluated. More suitable ratio of SAD filter to anammox granular sludge was 2:1. Proteobacteria (57.26%), Bacteroidetes (20.12%) and Chloroflexi (9.95%) were the main phyla. The dominant genera of denitrification functional bacteria were <i>Thiobacillus</i> (39.80%), <i>Chlorobaculum</i> (3.99%), <i>norank_f_PHOs-HE36</i> (2.90%) and <i>Ignavibacterium</i> (2.64%). The dominant genus of anammox bacterium was <i>Candidatus_Kuenenia</i> (3.05%).</p><h3>Graphical abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":486,"journal":{"name":"Biodegradation","volume":"35 5","pages":"565 - 582"},"PeriodicalIF":3.1,"publicationDate":"2024-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141282645","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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