International Biodeterioration & Biodegradation最新文献

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Metagenomic and morphological analysis of biodeteriogenic biofilms on historic stone buildings in the tropical north-east of Brazil 巴西东北部热带地区历史建筑上生物营养性生物膜的宏基因组学和形态学分析
IF 4.1 2区 环境科学与生态学
International Biodeterioration & Biodegradation Pub Date : 2025-06-10 DOI: 10.1016/j.ibiod.2025.106143
Christine C. Gaylarde , Beata Gutarowska , Iwona B. Beech , Justyna Szulc , Amit Acharjee , Tomasz Grzyb , Alex da Silva de Freitas , José Antônio Baptista Neto
{"title":"Metagenomic and morphological analysis of biodeteriogenic biofilms on historic stone buildings in the tropical north-east of Brazil","authors":"Christine C. Gaylarde ,&nbsp;Beata Gutarowska ,&nbsp;Iwona B. Beech ,&nbsp;Justyna Szulc ,&nbsp;Amit Acharjee ,&nbsp;Tomasz Grzyb ,&nbsp;Alex da Silva de Freitas ,&nbsp;José Antônio Baptista Neto","doi":"10.1016/j.ibiod.2025.106143","DOIUrl":"10.1016/j.ibiod.2025.106143","url":null,"abstract":"<div><div>Samples of dark-colored biofilms collected from the surfaces of three 16th and 18th century buildings in equatorial Brazil, two limestone churches in Salvador, Bahia, and a sandstone fort in Belém, Para, were characterized using metagenomics, light microscopy and field emission scanning electron microscopy (FESEM) with energy-dispersive X-ray spectroscopy (EDS). Cyanobacteria were dominant colonisers, <em>Chroococcidiopsis</em> and <em>Trichotorquatus</em> on Salvador churches, and <em>Aerosakkonema</em> on the Belém fort. Actinomycetes and extremophiles were more common in hotter and more humid Belém than in Salvador. Major fungal sequences represented <em>Sordariomycetes</em> and <em>Dothideomycetes</em>, the latter being more frequent in Belém. The presence of several bacterial species and of the diatom <em>Humidophila contenta</em> are reported for the first time on historic stone buildings. Apart from microbially induced discoloration, biogenic deposits of goethite and possibly pyrite were found within the stone, contributing to its biodeterioration.</div></div>","PeriodicalId":13643,"journal":{"name":"International Biodeterioration & Biodegradation","volume":"204 ","pages":"Article 106143"},"PeriodicalIF":4.1,"publicationDate":"2025-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144243281","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
Sulfate reducing activity and corrosion potential of diverse heterotrophic facultative bacteria isolated from crude oil pipeline residues 原油管道残留物中不同异养兼性细菌的硫酸盐还原活性和腐蚀电位
IF 4.1 2区 环境科学与生态学
International Biodeterioration & Biodegradation Pub Date : 2025-06-10 DOI: 10.1016/j.ibiod.2025.106138
C.A. Shefeena , Jesmi Yousuf , C.B. Sudheer , Mohamed Hatha A.A , Anand K.P
{"title":"Sulfate reducing activity and corrosion potential of diverse heterotrophic facultative bacteria isolated from crude oil pipeline residues","authors":"C.A. Shefeena ,&nbsp;Jesmi Yousuf ,&nbsp;C.B. Sudheer ,&nbsp;Mohamed Hatha A.A ,&nbsp;Anand K.P","doi":"10.1016/j.ibiod.2025.106138","DOIUrl":"10.1016/j.ibiod.2025.106138","url":null,"abstract":"<div><div>Sulfate-reducing bacteria are vital in biogeochemical cycles and can significantly affect both environmental and industrial processes, including biocorrosion. This study investigates the sulfate-reducing potential of various heterotrophic facultative bacteria isolated from crude oil samples collected at various points in a petroleum refinery, after a crude oil pipeline pigging operation. The samples were analysed to identify the microbial communities and their metabolic capabilities. Bacterial strains of <em>Enterobacter cloacae, Enterobacter ludwigii, Enterobacter hormaechei, Citrobacter braakii, Citrobacter freundii</em> and <em>Pantoea hericii</em> were isolated from the crude oil samples using selective enrichment. Their sulfate reducing potential was assessed by measuring sulfide production and growth under various environmental conditions. Significant variability in sulfate-reducing activity among the isolated strains, with some exhibiting notably high reduction rates. Molecular identification via 16S rRNA sequencing was employed to characterize the strains and elucidate their phylogenetic relationships. Furthermore, corrosion capacity of the most promising bacterial strain among those identified, <em>E</em><em>.</em> <em>cloacae</em> on API 5L X65 pipeline material was analysed using the potentiodynamic polarization method. Under abiotic conditions, the corrosion rate was measured at 0.09 mm per year, with a corrosion current density of 1.69 × 10<sup>−5</sup> A cm<sup>−2</sup>. However, in the presence of facultative bacterium <em>E</em><em>.</em> <em>cloacae,</em> the corrosion rate increased significantly to 0.23 mm per year, accompanied by corresponding I<sub>corr</sub> value of 3.29 × 10<sup>−5</sup> A cm<sup>−2</sup>. This study contributes to a better understanding of the ecological roles of facultative sulfate reducing bacteria in industrial environments, especially within crude oil processing.</div></div>","PeriodicalId":13643,"journal":{"name":"International Biodeterioration & Biodegradation","volume":"204 ","pages":"Article 106138"},"PeriodicalIF":4.1,"publicationDate":"2025-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144243282","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
Formulations of chitosan/TiO2/ZnO ternary nanocomposites-based alkyd nanopaint for marine anti-biofouling application 壳聚糖/TiO2/ZnO三元复合醇酸纳米涂料的海洋防生物污配方研究
IF 4.1 2区 环境科学与生态学
International Biodeterioration & Biodegradation Pub Date : 2025-06-09 DOI: 10.1016/j.ibiod.2025.106136
Lakshminarayanan Sivakumar , Santhosh Kumar Arunagiri , Dhandapani Perumal , Manikandan Thiyagarajan , Prasanth Bhatt N , Suraj R , Suriyaprakash Rajadesingu , Murugesan Perumal , Rajaram Rajamohan , Parthipan Punniyakotti
{"title":"Formulations of chitosan/TiO2/ZnO ternary nanocomposites-based alkyd nanopaint for marine anti-biofouling application","authors":"Lakshminarayanan Sivakumar ,&nbsp;Santhosh Kumar Arunagiri ,&nbsp;Dhandapani Perumal ,&nbsp;Manikandan Thiyagarajan ,&nbsp;Prasanth Bhatt N ,&nbsp;Suraj R ,&nbsp;Suriyaprakash Rajadesingu ,&nbsp;Murugesan Perumal ,&nbsp;Rajaram Rajamohan ,&nbsp;Parthipan Punniyakotti","doi":"10.1016/j.ibiod.2025.106136","DOIUrl":"10.1016/j.ibiod.2025.106136","url":null,"abstract":"<div><div>Marine biofouling is a significant challenge for the performance and durability of marine vessels and structures. This study focuses on developing a chitosan/TiO<sub>2</sub>/ZnO nanocomposite-based alkyd nanocoating to mitigate biofouling. Chitosan was effectively extracted from shrimp shell, pristine ZnO and TiO<sub>2</sub> nanoparticles were synthesized to form binary and ternary nanocomposites. The resultant materials were characterized using various analytical techniques. UV–Visible spectroscopy confirmed that the ternary nanocomposites exhibited a shift in the absorption edge at the interface between pristine TiO<sub>2</sub> and ZnO. X-ray diffraction and High-Resolution Transmission Electron Microscope confirmed wurtzite ZnO as hexagonal nano rods and anatase-phase TiO<sub>2</sub> with a spherical morphology. Raman and X-ray photoelectron spectroscopy confirmed the presence of pristine TiO<sub>2</sub> and ZnO nanoparticles in the composites. The chitosan/TiO<sub>2</sub>/ZnO composite materials were evaluated at a concentration of 50 μg/mL and demonstrated enhanced antibacterial and antibiofilm activities. In addition, alkyd resin-based nanopaints were formulated by incorporating these nanocomposites and coated onto mild steel coupons. The residue weight of TiO<sub>2</sub> and ZnO (32.49 % in 760 °C) in the formulation was confirmed by thermogravimetric analysis. The water contact angle measurement indicated a hydrophobicity of 90.17° for the ternary composite. Mesocosm experiments and field exposure trials showed a notable reduction in microfouling and macrofouling on surfaces coated with chitosan/TiO<sub>2</sub>/ZnO paint. Notably, the barnacle attachment count on coupons submerged in seawater for 45 days showed 10 % adherence on the chitosan/TiO<sub>2</sub>/ZnO paint. The results of the field immersion study indicate that this nanopaint exhibits significant potential as an effective material for marine antifouling applications.</div></div>","PeriodicalId":13643,"journal":{"name":"International Biodeterioration & Biodegradation","volume":"204 ","pages":"Article 106136"},"PeriodicalIF":4.1,"publicationDate":"2025-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144243344","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
Susceptibility of fungi to commercially available traditional chemical products and to potentially alternative products for use in cultural heritage preservation 真菌对市售传统化学产品的敏感性,以及对文化遗产保护中潜在替代产品的敏感性
IF 4.1 2区 环境科学与生态学
International Biodeterioration & Biodegradation Pub Date : 2025-06-09 DOI: 10.1016/j.ibiod.2025.106137
Johann Leplat , Alexandre François , Faisl Bousta
{"title":"Susceptibility of fungi to commercially available traditional chemical products and to potentially alternative products for use in cultural heritage preservation","authors":"Johann Leplat ,&nbsp;Alexandre François ,&nbsp;Faisl Bousta","doi":"10.1016/j.ibiod.2025.106137","DOIUrl":"10.1016/j.ibiod.2025.106137","url":null,"abstract":"<div><div>Traditional chemical biocide products are still widely used to control fungal development in the field of cultural heritage preservation, despite increasing criticism related to environmental and human health concerns. Moreover, the efficacy of biocidal products varies depending on the type of micro-organism targeted. It is therefore crucial to assess the susceptibility of fungal species to biocide compounds prior to their use. This study tests the susceptibility of 193 different fungal species to eight commercially available biocide products. Five of these products were classical biocides that target all microorganism deposits, and were composed of either quaternary ammonium salts or a combination of quaternary ammonium salts and isothiazolinone. One biocide was composed of econazole nitrate and specifically targeted fungi. The two remaining biocides were greener products designed solely for green deposits, and were assessed as potential alternatives to classical biocides. They were composed of lemongrass essential oil and pelargonic acid, respectively. The susceptibility to biocides was genus dependent for several fungal genera, while it was species dependent in other cases. The classical biocide product Biotin T™ was the most efficient in inhibiting fungal growth overall. Only weak fungal growth inhibition was obtained with the two products that were tested as alternative solutions. The fungi-specific product was very efficient in some cases but inefficient in others, thus underlining the importance of testing the products before use. These results showed that however desirable alternative solutions to traditional biocide products may be, there are actually very few commercially available alternative solutions.</div></div>","PeriodicalId":13643,"journal":{"name":"International Biodeterioration & Biodegradation","volume":"204 ","pages":"Article 106137"},"PeriodicalIF":4.1,"publicationDate":"2025-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144243280","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
Microbial reductive dissolution of schwertmannite leading to antimony release schwertmanite的微生物还原溶解导致锑释放
IF 4.1 2区 环境科学与生态学
International Biodeterioration & Biodegradation Pub Date : 2025-06-09 DOI: 10.1016/j.ibiod.2025.106133
Xinyue Zhang , Xuan Qiu , Weiqi Wang , Min Li , Jingwen Lei , Olli H. Tuovinen , Hongmei Wang
{"title":"Microbial reductive dissolution of schwertmannite leading to antimony release","authors":"Xinyue Zhang ,&nbsp;Xuan Qiu ,&nbsp;Weiqi Wang ,&nbsp;Min Li ,&nbsp;Jingwen Lei ,&nbsp;Olli H. Tuovinen ,&nbsp;Hongmei Wang","doi":"10.1016/j.ibiod.2025.106133","DOIUrl":"10.1016/j.ibiod.2025.106133","url":null,"abstract":"<div><div>Schwertmannite, an iron hydroxysulfate mineral, significantly influences the mobility of antimony. While schwertmannite can effectively sequester antimony through adsorption or coprecipitation, the subsequent release of antimony from schwertmannite via microbial activities remains poorly understood. This study revealed that up to 40% of the Sb(V) coprecipitated by schwertmannite can be released by the iron-reducing bacterium <em>Shewanella piezotolerans</em> WP3 through dissimilatory iron reduction, Over 50% of crystalline Fe(III) in schwertmannite was reduced by WP3, facilitating the dissolution of schwertmannite and the release of Sb(V), accompanied by partial Sb(V) reduction to mobile Sb(III) (3.10–3.34% of total Sb). Vivianite emerged as the predominant secondary mineral in the presence of WP3 as confirmed by XRD spectra. In contrast, under the pH around 6.8 (mimicking the circumneutral condition during antimony remediation) in abiotic control, Sb(V)-loaded schwertmannite remanded relatively stable with 2.13–3.04% Sb(V) released. These findings underscore the critical role of microbial Fe(III) reduction in mobilizing antimony from Sb-bearing minerals, thereby highlighting potential contamination risks associated with microbial activity.</div></div>","PeriodicalId":13643,"journal":{"name":"International Biodeterioration & Biodegradation","volume":"204 ","pages":"Article 106133"},"PeriodicalIF":4.1,"publicationDate":"2025-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144243279","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
Biodegradation of polyurethane plastic monomer 4,4′-methylenedianiline by Rhodococcus sp. YXP8 红球菌YXP8降解聚氨酯塑料单体4,4′-亚甲基苯胺
IF 4.1 2区 环境科学与生态学
International Biodeterioration & Biodegradation Pub Date : 2025-06-07 DOI: 10.1016/j.ibiod.2025.106135
Junbin Ji , Jing Pei , Fanghui Ding , Jie Zhou , Weiliang Dong , Zhongli Cui , Xin Yan
{"title":"Biodegradation of polyurethane plastic monomer 4,4′-methylenedianiline by Rhodococcus sp. YXP8","authors":"Junbin Ji ,&nbsp;Jing Pei ,&nbsp;Fanghui Ding ,&nbsp;Jie Zhou ,&nbsp;Weiliang Dong ,&nbsp;Zhongli Cui ,&nbsp;Xin Yan","doi":"10.1016/j.ibiod.2025.106135","DOIUrl":"10.1016/j.ibiod.2025.106135","url":null,"abstract":"<div><div>The 4,4′-methylenedianiline (MDA) is an important precursor in the production of polyurethane plastic. The environmental release of MDA poses a threat to plants, animals, and humans. Microorganisms exert an important role in degrading xenobiotic compounds. However, only several MDA-degrading microbes are reported, and the molecular mechanism of MDA degradation remains unclear. In this work, a Gram-positive MDA-degrading bacterium <em>Rhodococcus</em> sp. YXP8 was first obtained from the surface of polyurethane waste. This strain could degrade 20 mg·L<sup>−1</sup> MDA at 30 °C and pH 7.0 within 4 days and showed good degradation ability (&gt;70 %) within a wide pH range from 5.0 to 10.0. The results of liquid chromatograph-tandem mass spectrometer analysis indicate that strain YXP8 transformed MDA to two final products of 4-aminophenylacetic acid and (Z)-3-amino-2-hydroxypenta-2,4-dienoic acid. The catabolic pathway of MDA in bacteria was demonstrated for the first time. Strain YXP8 could efficiently remediate MDA-contaminated natural water, eliminating its risk to aquatic organisms. Taken together, this work presents a bacterium with potential for biological treatment of MDA pollutants and for mining genetic determinants of MDA degradation.</div></div>","PeriodicalId":13643,"journal":{"name":"International Biodeterioration & Biodegradation","volume":"204 ","pages":"Article 106135"},"PeriodicalIF":4.1,"publicationDate":"2025-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144231686","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
Human-derived glutathione S-transferase mu 1 mediated hydrolysis of nitrocellulose: reaction mechanisms and thermal decomposition behavior 人源性谷胱甘肽s -转移酶mu 1介导的硝化纤维素水解:反应机制和热分解行为
IF 4.1 2区 环境科学与生态学
International Biodeterioration & Biodegradation Pub Date : 2025-06-06 DOI: 10.1016/j.ibiod.2025.106139
Huihui Xue , Qiaoyu Chen , Juan Huang , Alei Zhang , Yajun Ding , Zhongliang Xiao
{"title":"Human-derived glutathione S-transferase mu 1 mediated hydrolysis of nitrocellulose: reaction mechanisms and thermal decomposition behavior","authors":"Huihui Xue ,&nbsp;Qiaoyu Chen ,&nbsp;Juan Huang ,&nbsp;Alei Zhang ,&nbsp;Yajun Ding ,&nbsp;Zhongliang Xiao","doi":"10.1016/j.ibiod.2025.106139","DOIUrl":"10.1016/j.ibiod.2025.106139","url":null,"abstract":"<div><div>This study proposes the innovative application of human-derived glutathione S-transferase mu 1 (GSTM1) for biocatalytic denitration of nitrocellulose (NC), designed to achieve nitrate ester hydrolysis under mild conditions while effectively reducing NC's hazardous properties. The experimental results showed that GSTM1 protein was expressed heterologously in engineered <em>Escherichia coli</em> (<em>E. coli</em>). After 48 h of treatment with purified enzyme GSTM1, the nitrogen content of NC significantly decreased from 12.97 % to 8.4 %. Fourier transform infrared spectroscopic analysis combined with cellulase enzymatic hydrolysis experiments of substances insoluble in ethyl acetate demonstrated GSTM1-mediated conversion of nitrate ester groups to hydroxyl groups in NC, accompanied by hydrogen bond formation and subsequent regeneration of cellulose. Gel permeation chromatography revealed that GSTM1 treatment significantly reduced the relative molecular weight of NC while broadening its molecular weight distribution. Moreover, scanning electron microscopy images revealed increased crack density and surface roughness on NC fiber. The TG-DSC and DSC experiments confirmed decreased combustion heat and reduced activation energy (E<sub>a</sub>) from 195.92 kJ·mol<sup>−1</sup> to 168.47 kJ·mol<sup>−1</sup> post-treatment of NC. The thermal decomposition process of NC before and after the reaction was thoroughly analyzed using the model-free Friedman method. Through systematic optimization, the ideal enzymatic reaction parameters were established as 3.2 g·L<sup>−1</sup> NC substrate concentration with 1.0 g·L<sup>−1</sup> GSTM1 at 37 °C for 8 h. This novel technique safely and environmentally friendly treats waste military compounds while offering new insights for developing multi-enzyme synergistic systems for NC-based waste treatment.</div></div>","PeriodicalId":13643,"journal":{"name":"International Biodeterioration & Biodegradation","volume":"204 ","pages":"Article 106139"},"PeriodicalIF":4.1,"publicationDate":"2025-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144231687","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
Ciprofloxacin-based zinc-doped carbon dots with peroxidase-like activity against Escherichia coli and biofilm eradication 具有过氧化物酶样抗大肠杆菌和生物膜根除活性的环丙沙星锌掺杂碳点
IF 4.1 2区 环境科学与生态学
International Biodeterioration & Biodegradation Pub Date : 2025-06-06 DOI: 10.1016/j.ibiod.2025.106134
Zizhuo Li , Jinya Wei , Jitao Li , Yaling Yang , Dezhi Yang , Yuzhu Song
{"title":"Ciprofloxacin-based zinc-doped carbon dots with peroxidase-like activity against Escherichia coli and biofilm eradication","authors":"Zizhuo Li ,&nbsp;Jinya Wei ,&nbsp;Jitao Li ,&nbsp;Yaling Yang ,&nbsp;Dezhi Yang ,&nbsp;Yuzhu Song","doi":"10.1016/j.ibiod.2025.106134","DOIUrl":"10.1016/j.ibiod.2025.106134","url":null,"abstract":"<div><div>Herein, we rationally designed a novel and forceful ciprofloxacin (CIP) grafted zinc-doped-carbon dots (CIP@Zn/CDs) as an efficient artificial nanozyme against <em>Escherichia coli</em> (<em>E. coli</em>), multi-drug-resistant <em>E. coli</em> (AREC), and <em>E. coli</em> biofilms through the peroxidase (POD)-like catalytic activity and the synergistic antibacterial activity of CIP and Zn<sup>2+</sup>. On the one hand, extracellular DNA (eDNA) cleave by high levels of hydroxyl radicals (•OH) catalyzed by the POD-like catalytic activity of CIP@Zn/CDs. On the other hand, CIP@Zn/CDs with positive surface potential, elimination abilities against <em>E. coli</em> via electrostatic interaction, changing the cell membrane permeability and eventually leading to <em>E. coli</em> death within <em>E. coli</em> biofilms. Furthermore, the ultrasmall size of CIP@Zn/CDs possesses good biocompatibility favoring clinical translation. This work provides potential to develop CD-based techniques for applications in the field of selective antibacterial agents towards Gram-negative bacteria.</div></div>","PeriodicalId":13643,"journal":{"name":"International Biodeterioration & Biodegradation","volume":"204 ","pages":"Article 106134"},"PeriodicalIF":4.1,"publicationDate":"2025-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144231688","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
Mechanisms and mass transfer kinetics of anammox during sludge enrichment 厌氧氨氧化污泥富集过程的机理及传质动力学
IF 4.1 2区 环境科学与生态学
International Biodeterioration & Biodegradation Pub Date : 2025-06-06 DOI: 10.1016/j.ibiod.2025.106140
Ching Yi Hong , Khalida Muda , Mohamad Ali Fulazzaky
{"title":"Mechanisms and mass transfer kinetics of anammox during sludge enrichment","authors":"Ching Yi Hong ,&nbsp;Khalida Muda ,&nbsp;Mohamad Ali Fulazzaky","doi":"10.1016/j.ibiod.2025.106140","DOIUrl":"10.1016/j.ibiod.2025.106140","url":null,"abstract":"<div><div>Mass transfer kinetics for enrichment of anammox granular sludge (AnGS) is important for optimizing the removal of ammonium (NH<sub>4</sub><sup>+</sup>) from wastewater. AnGS enrichment was monitored over 147 days in a continuous upflow sludge bed anammox reactor (CUSBAR) experiment, which was simulated using Generalized Fulazzaky equations to predict the underlying mechanisms and mass transfer kinetics. The removal efficiency of NH<sub>4</sub><sup>+</sup> followed the bacterial growth progressed through four distinct phases over 63 days, starting with an initial NH<sub>4</sub><sup>+</sup> concentration of 30.9 mg/L. The CUSBAR process achieved a performance of 84.97 % on the 147th day of the experiment, with the initial NH<sub>4</sub><sup>+</sup> concentration increased from 30.9 to 75.0 mg/L. The internal mass transfer (IMT) and global mass transfer rates were nearly identical and significantly higher than the external mass transfer (EMT) rate, indicating that EMT was the dominant resistance to mass transfer. The positive correlation between NH<sub>4</sub><sup>+</sup> removal efficiency and IMT rate provides valuable insights into the dynamic response of AnGS development during the 147-day enrichment period. This study's findings enhance the availability of AnGS as inocula for future CUSBAR process applications, expanding the knowledge base and references in anammox-based nitrogen removal technology.</div></div>","PeriodicalId":13643,"journal":{"name":"International Biodeterioration & Biodegradation","volume":"204 ","pages":"Article 106140"},"PeriodicalIF":4.1,"publicationDate":"2025-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144231689","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
Novel bio-recognition elements (BREs) for biosensing and differentiation of Gram-positive bacteria in hydrocarbon environments 烃类环境中革兰氏阳性菌生物传感和分化的新型生物识别元件(BREs)
IF 4.1 2区 环境科学与生态学
International Biodeterioration & Biodegradation Pub Date : 2025-06-05 DOI: 10.1016/j.ibiod.2025.106130
Loryn L. Bowen , Molly E. Chapleau , Richard R. Chapleau , Oscar N. Ruiz , Thusitha S. Gunasekera
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