International Biodeterioration & Biodegradation最新文献_第10页

The fate of various organic compounds including pharmaceuticals in the treatment of landfill leachate and anaerobic digestate using deammonification 使用脱氨法处理垃圾填埋场渗滤液和厌氧消化液时包括药物在内的各种有机化合物的去向

IF 4.8 2区环境科学与生态学

International Biodeterioration & Biodegradation Pub Date : 2024-06-10 DOI: 10.1016/j.ibiod.2024.105832

Tayyeb Zeirani Nav , Thomas Pümpel , Herbert Oberacher , Anke Bockreis

{"title":"The fate of various organic compounds including pharmaceuticals in the treatment of landfill leachate and anaerobic digestate using deammonification","authors":"Tayyeb Zeirani Nav , Thomas Pümpel , Herbert Oberacher , Anke Bockreis","doi":"10.1016/j.ibiod.2024.105832","DOIUrl":"https://doi.org/10.1016/j.ibiod.2024.105832","url":null,"abstract":"<div><p>Studies focusing on the fate of organic compounds specifically recalcitrant organics and pharmaceuticals in a deammonification plant are scarce. This study downscaled a full-scale deammonification plant, which was being operated with the same wastewater streams of this study and evaluated for the first time the fate of different fractions of organic compounds in deammonification process along with the removal of nitrogenous compounds. Organic compounds in the feed and effluent were analyzed and their changes in the deammonification process were characterized. The results demonstrate that deammonification achieved over 90% of ammonium removal. COD monitoring revealed that around 11% of COD was reduced during the process mainly due to aerobic COD degradation and heterotrophic denitrifying bacteria. Analysis of the organic fractions revealed that high molecular weight components (around 11 <span><math><mrow><mi>k</mi><mi>D</mi><mi>a</mi></mrow></math></span>) are susceptible to removal and their concentrations tend to decrease in the reactor. Concentrations of humic substances, specifically fulvic acid-like substances, were reduced. Tracking nine different pharmaceutical residues revealed that morphine and cotinine were completely removed, while pregabalin and oxazepam which are known to be highly recalcitrant were more than 60% removed. The research finding can help in optimizing treatment processes by revealing the fate of different organic compounds, especially pharmaceuticals, within the deammonification process, thereby contributing to better effluent quality, regulatory compliance, and environmental protection.</p></div>","PeriodicalId":13643,"journal":{"name":"International Biodeterioration & Biodegradation","volume":null,"pages":null},"PeriodicalIF":4.8,"publicationDate":"2024-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0964830524001033/pdfft?md5=bc5ad824e526b0908c9c4bd53c72a37a&pid=1-s2.0-S0964830524001033-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141303491","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Evaluation of lignocellulolytic fungal enzymes for eucalyptus wood degradation 评估木质纤维素分解真菌酶对桉树木材的降解作用

IF 4.8 2区环境科学与生态学

International Biodeterioration & Biodegradation Pub Date : 2024-06-08 DOI: 10.1016/j.ibiod.2024.105830

Débora Cristina Pimentel , João Batista de Souza , Rafaela Zandonade Ventorim , Rafael Ferreira Alfenas , Acelino Couto Alfenas , Valéria Monteze Guimarães , Edgard Augusto de Toledo Picoli , Gabriela Piccolo Maitan-Alfenas

{"title":"Evaluation of lignocellulolytic fungal enzymes for eucalyptus wood degradation","authors":"Débora Cristina Pimentel , João Batista de Souza , Rafaela Zandonade Ventorim , Rafael Ferreira Alfenas , Acelino Couto Alfenas , Valéria Monteze Guimarães , Edgard Augusto de Toledo Picoli , Gabriela Piccolo Maitan-Alfenas","doi":"10.1016/j.ibiod.2024.105830","DOIUrl":"https://doi.org/10.1016/j.ibiod.2024.105830","url":null,"abstract":"<div><p>Planted forests consist of areas of wood cultivation destined for various commercial applications. The remaining stumps and roots constitute obstacles to the passage of machines and implements to news cycles of cultural management. To overcome the disadvantages of mechanical stump removal, this study aimed to prospect and analyze the lignocellulolytic enzyme profile of 11 fungi isolated from wood and evaluate their ability for <em>in vitro</em> eucalyptus chips degradation. The fungi were cultivated in semi-solid media in 5 different biomasses, which were chemically characterized, for 5 and 8 days. The fungi <em>Hypoxylon</em> sp. and <em>Aspergillus sydowii</em> demonstrated greater activities for some enzymes, while <em>Chrysoporthe cubensis</em> demonstrated interesting activities for most of them, such as 1.3, 2.8, and 1.6 U.mL<sup>−1</sup> for FPase, endoglucanase, and β-glucosidase, respectively. The enzymatic extract of <em>C. cubensis</em>, selected for <em>Eucalyptus</em> sp. wood chips hydrolysis, at 20 FPU.g<sup>−1</sup> of chip, promoted an increase of reducing sugars to up to 160.3 mmol.L<sup>−1</sup> in 10 days. Moreover, it released higher glucose (17.6 g.L<sup>−1</sup>) and xylose (7.6 g.L<sup>−1</sup>) amounts compared to the commercial cocktail. Microscopic analysis suggested changes in the structure and constituents by enzymes, which confirms the potential of <em>C. cubensis</em> enzymatic extract for wood degradation.</p></div>","PeriodicalId":13643,"journal":{"name":"International Biodeterioration & Biodegradation","volume":null,"pages":null},"PeriodicalIF":4.8,"publicationDate":"2024-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141289993","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

First report of microbial symbionts in the digestive system of shipworms; wood boring mollusks 首次报告船虫消化系统中的微生物共生体；蛀木软体动物

IF 4.8 2区环境科学与生态学

International Biodeterioration & Biodegradation Pub Date : 2024-06-05 DOI: 10.1016/j.ibiod.2024.105816

Barry Goodell , James Chambers , Doyle V. Ward , Cecelia Murphy , Eileen Black , Lucca Bonjy Kikuti Mancilio , Gabriel Perez- Gonzalez , J. Reuben Shipway

{"title":"First report of microbial symbionts in the digestive system of shipworms; wood boring mollusks","authors":"Barry Goodell , James Chambers , Doyle V. Ward , Cecelia Murphy , Eileen Black , Lucca Bonjy Kikuti Mancilio , Gabriel Perez- Gonzalez , J. Reuben Shipway","doi":"10.1016/j.ibiod.2024.105816","DOIUrl":"https://doi.org/10.1016/j.ibiod.2024.105816","url":null,"abstract":"<div><p>Shipworms, historically known for their destruction of wooden ships and coastal structures, play a key role in carbon and nutrient cycling in aquatic ecosystems. Despite extensive research, the exact mechanisms underlying their ability to digest wood have remained elusive, particularly regarding the degradation of lignin, a major component of wood that resists breakdown. Here we employ a combination of microbial culture, metagenomics, and FISH-probe microscopy analyses to explore previously overlooked aspects of their digestive system. Specifically, we identify the presence of bacterial symbionts within the typhlosole, a specialized structure within the main wood digestive organ (cecum), challenging the long-held belief that shipworm foreguts are nearly sterile environments. The discovery of <em>Alteromonas</em> species in bacterial clusters within the typhlosole suggests a symbiotic relationship that may play a crucial role in the digestion of woody substrates, offering a potential explanation for the shipworm's ability to degrade lignocellulose without ligninases from the host or gill symbionts. These findings provide insight into the digestive physiology and host defense of shipworms, but also suggests that the typhlosole in other related organisms might also harbor symbionts. This study also opens new insights into research into the ecological and biotechnological applications of shipworms and their gut symbionts, enhancing our understanding of lignocellulose degradation in marine environments.</p></div>","PeriodicalId":13643,"journal":{"name":"International Biodeterioration & Biodegradation","volume":null,"pages":null},"PeriodicalIF":4.8,"publicationDate":"2024-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0964830524000878/pdfft?md5=c568f8e4a2917835ebabc14cb490111e&pid=1-s2.0-S0964830524000878-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141249459","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Fungal invasion of cellulosic skeletal substrates with a hierarchical structure of wood 真菌入侵具有木材分层结构的纤维素骨架基质

IF 4.8 2区环境科学与生态学

International Biodeterioration & Biodegradation Pub Date : 2024-06-05 DOI: 10.1016/j.ibiod.2024.105826

Masaumi Miyabayashi , Tatsuki Kurei , Rikako Tsukida , Makoto Yoshida , Yoshiki Horikawa

{"title":"Fungal invasion of cellulosic skeletal substrates with a hierarchical structure of wood","authors":"Masaumi Miyabayashi , Tatsuki Kurei , Rikako Tsukida , Makoto Yoshida , Yoshiki Horikawa","doi":"10.1016/j.ibiod.2024.105826","DOIUrl":"https://doi.org/10.1016/j.ibiod.2024.105826","url":null,"abstract":"<div><p>Wood serves as a renewable resource; however, its sustainability is threatened by wood-rotting fungi, a type of filamentous fungi. Although its decay mechanism has been widely investigated, essential factors controlling fungal responses are poorly understood owing to the complex wood architecture mainly formed by cellulose microfibrils, hemicellulose, and lignin. This study aimed to explore the effects of wood structure and chemical components on wood-rotting fungi using chemically simplified wood substrates. Cellulose-based substrates were successfully prepared from wood sections of <em>Cryptomeria japonica</em> by removing non-cellulosic components while maintaining the inherent wood structure. Confocal microscopy analysis combined with Hough transformation after decay tests revealed a clear tendency of hyphae to elongate along tracheids on cellulosic substrates with wood structures. Furthermore, scanning electron microscopy demonstrated that hyphae passed through bordered pits without completely destroying the pit structure. These results indicate that wood structure is the dominant factor in hyphal responses and that the physical forces of tip growth and enzymatic degradation of components contribute simultaneously to fungal invasion in wood. This study demonstrates the usefulness of single-component substrates with preserved wood structures as new evaluation materials for studying wood-rotting, potentially facilitating research on decay for wood preservation.</p></div>","PeriodicalId":13643,"journal":{"name":"International Biodeterioration & Biodegradation","volume":null,"pages":null},"PeriodicalIF":4.8,"publicationDate":"2024-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141249458","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Speleomycological and chemical assessment of sediments in Demänovská Slobody Cave (Slovakia) 对 Demänovská Slobody 洞穴（斯洛伐克）沉积物的岩浆菌学和化学评估

IF 4.8 2区环境科学与生态学

International Biodeterioration & Biodegradation Pub Date : 2024-06-04 DOI: 10.1016/j.ibiod.2024.105828

Rafał Ogórek , Klaudyna Spychała , Magdalena Cal , Agnieszka Lejman , Jakub Suchodolski

{"title":"Speleomycological and chemical assessment of sediments in Demänovská Slobody Cave (Slovakia)","authors":"Rafał Ogórek , Klaudyna Spychała , Magdalena Cal , Agnieszka Lejman , Jakub Suchodolski","doi":"10.1016/j.ibiod.2024.105828","DOIUrl":"https://doi.org/10.1016/j.ibiod.2024.105828","url":null,"abstract":"<div><p>Our study unveils the complex interplay between fungal diversity and geochemical environments within the Demänovská Slobody Cave, marking the first comprehensive speleomycological and chemical investigation of its kind. Through meticulous analysis using both microscopic techniques and ITS region gene barcoding, we recorded 17 fungal species, including four previously unrecorded in subterranean settings (<em>Cladosporium ramotenellum</em>, <em>Porostereum spadiceum</em>, <em>Rhexocercosporidium carotae</em>, and <em>Trichocladium nigrospermum</em>), with <em>Porostereum spadiceum</em> as the most prevalent. These findings illuminate the crucial role of fungi in subterranean biogeochemical cycles, demonstrating how nutrient levels and pH significantly influence fungal populations. Namely, the levels of mineral nutrients (N, P, K, Mg, Ca) and organic matter in sediments within the cave were lower than in soil those outside it. Conversely, the pH values of the tested samples inside the cave were higher compared to those outside. Positive correlations were observed between the average number of fungi and the content of N, P, K, CO, and organic matter (p < 0.05). Conversely, the concentration of fungi decreased with increasing levels of Mg, Ca, and pH (p < 0.05). This research not only expands our understanding of cave ecosystems but also sets a new precedent for exploring the ecological impact of fungi in extreme environments.</p></div>","PeriodicalId":13643,"journal":{"name":"International Biodeterioration & Biodegradation","volume":null,"pages":null},"PeriodicalIF":4.8,"publicationDate":"2024-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0964830524000994/pdfft?md5=41de03f85dc1c57419351c76ebe916b1&pid=1-s2.0-S0964830524000994-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141242808","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Characteristics of a novel acid-resistant phenol-degrading bacterium Acinetobacter pittii Hly3: Adaptability, kinetics, degradation pathway and long-term performance 新型耐酸苯酚降解菌 Acinetobacter pittii Hly3 的特征：适应性、动力学、降解途径和长期性能

IF 4.8 2区环境科学与生态学

International Biodeterioration & Biodegradation Pub Date : 2024-05-31 DOI: 10.1016/j.ibiod.2024.105825

Leye Huang, Jing Liang, Jianfeng Zhang

{"title":"Characteristics of a novel acid-resistant phenol-degrading bacterium Acinetobacter pittii Hly3: Adaptability, kinetics, degradation pathway and long-term performance","authors":"Leye Huang, Jing Liang, Jianfeng Zhang","doi":"10.1016/j.ibiod.2024.105825","DOIUrl":"10.1016/j.ibiod.2024.105825","url":null,"abstract":"<div><p>The high concentration of phenol in wastewater significantly restrains bioremediation efficiency; intricate environmental conditions further increase the difficulty, constraining further application. In this work, a novel phenol-degrading <em>Acinetobacter pittii</em> Hly3, was isolated and its ability to degrade phenol, environmental adaptability, kinetics and application potential were studied. Strain Hly3 possessed a strong capability on the degradation of phenol (1700 mg L<sup>−1</sup> in 56 h) and could remove phenol at a wide range of pH, temperature, and NaCl concentrations, as well as the tolerance of metal ions. Particularly, the Hly3 showed stable cyclic performance. Mass balance and stoichiometric analysis revealed 0.7935 g g<sup>−1</sup> conversions of phenol to biomass. Simultaneously, the growth and phenol degradation aligned well with the Haldane model. The degradation pathway demonstrated that phenol hydroxylase (PH) and 2,3-dioxygenase (C23O) were the key enzymes for phenol degradation. In addition, seed germination indicated that the degradation of phenol by Hly3 was an effective detoxification process, which reduced the biological accumulation of phenol in mung bean plants. Therefore, the highly tolerant strain Hly3 could be utilized to treat high-phenol wastewater in high-salt and acidic environments and this study has enriched the knowledge related to <em>Acinetobacter pittii</em> in managing phenol-contaminated environments.</p></div>","PeriodicalId":13643,"journal":{"name":"International Biodeterioration & Biodegradation","volume":null,"pages":null},"PeriodicalIF":4.8,"publicationDate":"2024-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141194289","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Gene cluster cehBDEF is responsible for the conversion of 1,2-dihydroxynaphthalene to salicylate in Rhizobium sp. strain X9 基因簇cehBDEF负责将根瘤菌X9菌株中的1,2-二羟基萘转化为水杨酸盐

IF 4.8 2区环境科学与生态学

International Biodeterioration & Biodegradation Pub Date : 2024-05-29 DOI: 10.1016/j.ibiod.2024.105818

Yidong Zhou , Hongfei Liu , Zhenyang Shen , Wenbin Chang , Baiyang Zhang , Chunli Xia , Mingliang Zhang , Qing Hong

{"title":"Gene cluster cehBDEF is responsible for the conversion of 1,2-dihydroxynaphthalene to salicylate in Rhizobium sp. strain X9","authors":"Yidong Zhou , Hongfei Liu , Zhenyang Shen , Wenbin Chang , Baiyang Zhang , Chunli Xia , Mingliang Zhang , Qing Hong","doi":"10.1016/j.ibiod.2024.105818","DOIUrl":"https://doi.org/10.1016/j.ibiod.2024.105818","url":null,"abstract":"<div><p><em>Rhizobium</em> sp. strain X9 was able to degrade 1-naphthol via 1,2-dihydroxynaphthalene (1,2-DHN), salicylate and gentisate. We have identified the two component hydroxylase gene <em>cehC1C2</em> (responsible for the conversion of 1-naphthol to 1,2-DHN) and genes <em>cehG</em>, <em>cehH</em>, and <em>cehI</em> involved in CoA dependent hydroxylation reaction (conversion of salicylate to gentisate). However, the other genes involved in the degradation pathway (from 1,2-DHN to salicylate) have not been identified yet. In this study, the <em>cehBDEF</em> gene cluster organized in the same operon was identified to be involved in the degradation of 1,2-DHN to salicylate. CehB was a novel 1,2-DHN dioxygenase that catalyzes 1,2-DHN to 2-hydroxychromene-2-carboxylate (HCCA), sharing only 28.2% amino acid identity with catechol 2,3-dioxygenase (P31003). CehD, cehE and CehF were conserved with the previously reported corresponding enzymes in 1-naphthol degradation (identity >60%). They are responsible for the successive conversion of HCCA to salicylate. The current study fills in the gap of the genes involved in the 1-naphthol degradation in strain X9.</p></div>","PeriodicalId":13643,"journal":{"name":"International Biodeterioration & Biodegradation","volume":null,"pages":null},"PeriodicalIF":4.8,"publicationDate":"2024-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141163281","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Capability of S. oneidensis MR-1 for malathion degradation: Insights from physiological and biochemical analyses S. oneidensis MR-1 降解马拉硫磷的能力：生理和生化分析的启示

IF 4.8 2区环境科学与生态学

International Biodeterioration & Biodegradation Pub Date : 2024-05-29 DOI: 10.1016/j.ibiod.2024.105814

Yanhong Li , Jie Zhang , Jing Zhang , Shen Tang , Qiaodong Pan , Ting Hu , Yu Hou

引用次数: 0

Isolation of Micrococcus sp. strain 2A from the ocean and its biodegradation of 1-naphthol in wastewater 从海洋中分离出微球菌 2A 菌株及其对废水中 1-萘酚的生物降解作用

IF 4.8 2区环境科学与生态学

International Biodeterioration & Biodegradation Pub Date : 2024-05-29 DOI: 10.1016/j.ibiod.2024.105815

Junwei Huang , Chen Yang , Xiaohan Zhang , Ruomu Chen , Shunli Hu , Dandan Pan , Xiangwei Wu

{"title":"Isolation of Micrococcus sp. strain 2A from the ocean and its biodegradation of 1-naphthol in wastewater","authors":"Junwei Huang , Chen Yang , Xiaohan Zhang , Ruomu Chen , Shunli Hu , Dandan Pan , Xiangwei Wu","doi":"10.1016/j.ibiod.2024.105815","DOIUrl":"https://doi.org/10.1016/j.ibiod.2024.105815","url":null,"abstract":"<div><p>1-Naphthol is an important raw material for organic synthesis such as pharmaceuticals, pesticides, dyes, and also the main metabolite of pesticide carbaryl and naphthalene, as well as a common aromatic pollutant in the environment. Microorganisms are the main driving force responsible for the degradation and transformation of 1-naphthol in the environment. Although many 1-naphthol degrading strains have been reported, strain resources with strong environmental adaptability and degradation ability from the marine environment are still relatively scarce. In this study, a 1-naphthol-degrading bacterial strain, <em>Micrococcus</em> sp. strain 2A, was isolated from seawater. The strain completely degraded 1-naphthol by co-metabolism under strong alkaline (pH = 11) and high salt (4 M NaCl) conditions. 1,2-Dihydroxynaphthalene, 2-hydroxychromene-2-carboxylate, 2-hydroxybenzal pyruvate, salicylaldehyde, and salicylate were identified during 1-naphthol degradation. The functional gene <em>orf2030</em> responsible for the initial degradation of 1-naphthol was also postulated by genome sequencing and comparative proteome analysis. The bioaugmentation test showed that strain 2A could completely remove 0.3 mM 1-naphthol in the wastewater within 144 h. Our study not only enriches the theory of marine microbial metabolism of 1-naphthol but also provides strain resources and technical reserves for the bioremediation of 1-naphthol in high salinity and strong alkaline fine chemical synthetic wastewater.</p></div>","PeriodicalId":13643,"journal":{"name":"International Biodeterioration & Biodegradation","volume":null,"pages":null},"PeriodicalIF":4.8,"publicationDate":"2024-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141163283","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effect of immersion time on bacterial community structure and sulfur metabolism in biofilm on concrete surface in sewer environment 浸泡时间对下水道环境中混凝土表面生物膜中细菌群落结构和硫代谢的影响

IF 4.8 2区环境科学与生态学

International Biodeterioration & Biodegradation Pub Date : 2024-05-19 DOI: 10.1016/j.ibiod.2024.105817

Mengshu Hong , Zhaoguang Li , Xuan Shi , Qiang Fu , Shaohui Zhang , Chen Xie , Yinchu Tian , Ditao Niu

{"title":"Effect of immersion time on bacterial community structure and sulfur metabolism in biofilm on concrete surface in sewer environment","authors":"Mengshu Hong , Zhaoguang Li , Xuan Shi , Qiang Fu , Shaohui Zhang , Chen Xie , Yinchu Tian , Ditao Niu","doi":"10.1016/j.ibiod.2024.105817","DOIUrl":"https://doi.org/10.1016/j.ibiod.2024.105817","url":null,"abstract":"<div><p>This study focuses on an overlooked but critical issue: the composition and functional expression of microbial communities on the concrete surface in different areas of sewer pipes. Three immersion conditions were applied to simulate the duration of concrete in different areas ofsewers exposed to sewage, including short-term (L1), long-term (L2) and permanent immersion (L3). The properties of concrete under different immersion conditions and the bacterial diversity and functional capabilities in biofilms on the concrete surface were analyzed. Results showed that the L1 group was dominated by <em>Halothiobacillus</em>, whereas <em>Desulfomicrobium</em> was prominent in the L3 group. Significant differences in the predominant functional microbial communities and metabolic functional genes further confirmed the strong impact of immersion time on the pathways of microbial sulfur metabolism and concrete performance in sewer environment. Compared with the L2 and L3 groups, the decreased sewage immersion time resulted in an increase in the abundance and metabolic activity of sulfur-oxidizing bacteria in the L1 group. Hence, greater mass loss and gypsum production of concrete was found in the L1 group. The structural and functional differentiation of bacterial communities on the concrete surface observed in this study contributes to a better understanding of the uneven corrosion in real sewer pipes.</p></div>","PeriodicalId":13643,"journal":{"name":"International Biodeterioration & Biodegradation","volume":null,"pages":null},"PeriodicalIF":4.8,"publicationDate":"2024-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141068824","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0