International Biodeterioration & Biodegradation最新文献_第9页

Characteristic study of Pb2+ binding to extracellular polymeric substances from Staphylococcus epidermidis G257

IF 4.1 2区环境科学与生态学

International Biodeterioration & Biodegradation Pub Date : 2025-02-01 DOI: 10.1016/j.ibiod.2025.106004

Yinyan Chen , Zhijia Fang , Yongbin Li , Qi Deng , Lijun Sun , Jianmeng Liao , Ravi Gooneratne

{"title":"Characteristic study of Pb2+ binding to extracellular polymeric substances from Staphylococcus epidermidis G257","authors":"Yinyan Chen , Zhijia Fang , Yongbin Li , Qi Deng , Lijun Sun , Jianmeng Liao , Ravi Gooneratne","doi":"10.1016/j.ibiod.2025.106004","DOIUrl":"10.1016/j.ibiod.2025.106004","url":null,"abstract":"<div><div>As an important toxic pollutant, lead (Pb<sup>2+</sup>) seriously threatens the environment and human well-being. Microbes and microbial extracellular polymeric substances (EPS) are highly effective at removing heavy metals from solutions. Herein, a Pb<sup>2+</sup>-tolerant strain, <em>Staphylococcus epidermidis</em> G257 was isolated from Guangxi of China. The strain showed strong resistance to Pb<sup>2+</sup> and great Pb<sup>2+</sup> adsorbability. The biosorption processes of <em>S. epidermidis</em> G257 and its EPS were characterized using microscopical techniques, ICP-MS, zeta potential measurement, XRD, FTIR, 3D-EEM, and XPS spectroscopy. Results showed that <em>S. epidermidis</em> G257 were effective in adsorbing Pb<sup>2+</sup>, with a biosorption efficiency of 81%. The biosorption process of Pb<sup>2+</sup> was described well by the pseudo-second-order model with an adsorption capacity of 53.52 mg/g. Microscopical analyses showed that Pb<sup>2+</sup> was adsorbed on the <em>S. epidermidis</em> surface by forming EPS precipitates. The variations in zeta potential indicated an electrostatic attraction in the Pb<sup>2+</sup> adsorption process. Moreover, FTIR, 3D-EEM and XPS analyses revealed that the functional groups participating in Pb<sup>2+</sup> adsorption were primarily carbonyl, carboxyl and amino groups of proteins in the EPS, which greatly facilitated Pb<sup>2+</sup> adsorption by forming EPS-metal complexes. Therefore, this study unveiled that <em>S. epidermidis</em> G257 can be utilized as a potential biosorbent for eliminating Pb<sup>2+</sup> from polluted environment.</div></div>","PeriodicalId":13643,"journal":{"name":"International Biodeterioration & Biodegradation","volume":"198 ","pages":"Article 106004"},"PeriodicalIF":4.1,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143165459","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

Unveiling the catabolic biodegradation of pymetrozine in Pseudomonas guariconensis strain BYT-5 through genomics studies

IF 4.1 2区环境科学与生态学

International Biodeterioration & Biodegradation Pub Date : 2025-02-01 DOI: 10.1016/j.ibiod.2024.105991

Mingliang Zhang, Yali Liu, Qian Li, Qian Zhu, Junqiang Hu, Mingli Jiang, Xin Yan, Qing Hong, Jiguo Qiu

{"title":"Unveiling the catabolic biodegradation of pymetrozine in Pseudomonas guariconensis strain BYT-5 through genomics studies","authors":"Mingliang Zhang, Yali Liu, Qian Li, Qian Zhu, Junqiang Hu, Mingli Jiang, Xin Yan, Qing Hong, Jiguo Qiu","doi":"10.1016/j.ibiod.2024.105991","DOIUrl":"10.1016/j.ibiod.2024.105991","url":null,"abstract":"<div><div>Pymetrozine boosts crop yields by managing insect pests, but the United States Environmental Protection Agency (USEPA) has labeled it a potential carcinogen for its detrimental effects on human reproduction and respiratory health. In this study, <em>Pseudomonas guariconensis</em> strain BYT-5, capable of degrading pymetrozine via a typical metabolic pathway as its sole carbon source for growth, was isolated. Genome sequencing and analysis of strain BYT-5 revealed the presence of the pymetrozine hydrolase gene <em>pyzH</em> and two nicotinic acid (NA) catabolic gene clusters, <em>nic1</em> (<em>nicAB1R1X1C1D1E1F1T1</em>) and <em>nic2</em> (<em>nicR2X2C2D2E2F2T2B2</em>). Verification of these genes was achieved through heterologous expression, gene knockout, and complementation assays. The gene <em>pyzH</em> initiated the breakdown of pymetrozine into 4-amino-6-methyl-4,5-dihydro-2<em>H</em>-[1,2,4]triazin-3-one (AMDT) and nicotinaldehyde, which was further oxidized to nicotinic acid (NA) by non-specific dehydrogenases. The genes <em>nicAB1</em>, <em>nicC2</em>, and <em>nicX1</em> sequentially converted NA into 6-hydroxynicotinic acid (6HNA), 2,5-dihydroxypyridine (2,5-DHP), and <em>N</em>-formylmaleamic acid (NFM), respectively. The genes <em>nicD2E2F2</em> was ultimately responsible for converting NFM to fumaric acid, entering the TCA cycle. Furthermore, the presence of diverse transposases around the <em>pyzH</em>, <em>nic1</em>, and <em>nic2</em> clusters may facilitate BYT-5's acquisition of genes necessary for pymetrozine degradation. This study elucidates the molecular metabolic mechanism of pymetrozine at the molecular level.</div></div>","PeriodicalId":13643,"journal":{"name":"International Biodeterioration & Biodegradation","volume":"198 ","pages":"Article 105991"},"PeriodicalIF":4.1,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143164774","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

Reassessing of enzymes degrading mycotoxins at acidic pH

IF 4.1 2区环境科学与生态学

International Biodeterioration & Biodegradation Pub Date : 2025-02-01 DOI: 10.1016/j.ibiod.2024.105994

Ilya Lyagin, Olga Maslova, Nikolay Stepanov, Olga Senko, Elena Efremenko

{"title":"Reassessing of enzymes degrading mycotoxins at acidic pH","authors":"Ilya Lyagin, Olga Maslova, Nikolay Stepanov, Olga Senko, Elena Efremenko","doi":"10.1016/j.ibiod.2024.105994","DOIUrl":"10.1016/j.ibiod.2024.105994","url":null,"abstract":"<div><div>Mycotoxins contaminate different commodities, thus endangering well being of humans and animals. In the present study, three enzymes – peroxidase, laccase, and glucose oxidase – were reanalyzed using computer modeling for their catalytic activity at acidic pH in a sample group of 18 mycotoxins. Fungal glucose oxidase was found to be catalytically active with the largest number of mycotoxins tested <em>in silico</em> according to results of molecular docking, and was further selected for <em>in vitro</em> experiments. Initially glucose oxidase activity was measured with AChE assay and later it was coupled to horseradish peroxidase for direct detection of mycotoxin transformations (three substrates and three non-substrates). On the basis of these results, it became possible to generalize and formulate model predicting Michaelis constants of glucose oxidase towards some other possible substrates, including mycotoxins not tested currently <em>in vitro</em>. The glucose oxidase showing maximal activity at approximately pH 5.5 can be potentially applied not only to detect mycotoxins at acidic pHs (e.g., when combining with peroxidase and chromophore/fluorophore co-substrate) but also to treat them enzymatically (e.g., during silaging).</div></div>","PeriodicalId":13643,"journal":{"name":"International Biodeterioration & Biodegradation","volume":"198 ","pages":"Article 105994"},"PeriodicalIF":4.1,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143164777","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

Mechanism of feather degradation by a isolated strain Bacillus cereus C3752 and potential application in litchi preservation

IF 4.1 2区环境科学与生态学

International Biodeterioration & Biodegradation Pub Date : 2025-02-01 DOI: 10.1016/j.ibiod.2025.106000

Qinqing Wang, Jin Chuan Wu, Qingxin Li

{"title":"Mechanism of feather degradation by a isolated strain Bacillus cereus C3752 and potential application in litchi preservation","authors":"Qinqing Wang, Jin Chuan Wu, Qingxin Li","doi":"10.1016/j.ibiod.2025.106000","DOIUrl":"10.1016/j.ibiod.2025.106000","url":null,"abstract":"<div><div>Feather waste, a protein-rich by-product of poultry industries, poses challenges in degradation and environment due to its recalcitrant nature. Microbial degradation has emerged as a promising approach, yet efficient feather-degrading microorganisms (FDMs) are still needed and the degradation mechanism remains not fully understood. In this study, we identified a FDM as <em>Bacillus cereus</em> (C3752). By optimizing conditions, strain C3752 achieved a feather degradation efficiency of 90.5% within 30 h. Structural analysis revealed that feather degradation likely occurred through bacterial colonization and pore formation, causing structural bifurcation and fiber reduction. Furthermore, changes in characteristic products and gene expression from strain C3752 indicated that feather degradation may include three processes: lipid hydrolysis by biosurfactants and lipases, disulfide bond disruption through efficient cysteine-based sulfite regeneration and disulfide reductases, and keratin hydrolysis. Pore formation and produced biosurfactants are reported for the first time during feather degradation. Up-regulated metabolic pathways including glycolysis, gluconeogenesis, pentose phosphate pathway, and electron transport chain likely meet energy demands for cell growth and feather degradation. The feather hydrolysates exhibited antioxidant and biosurfactant properties, showing a certain effect on post-harvest litchi preservation. These findings suggest that pore formation, cysteine-based sulfite regeneration and up-regulated metabolic pathways may be responsible for efficient feather degradation. This study provides a promising candidate and new insights into feather degradation, and opens the application of feather hydrolysates in fruit preservation.</div></div>","PeriodicalId":13643,"journal":{"name":"International Biodeterioration & Biodegradation","volume":"198 ","pages":"Article 106000"},"PeriodicalIF":4.1,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143164797","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

Component, mechanisms, ecological effect and applications of metastable iron biogeobattery: A review

IF 4.1 2区环境科学与生态学

International Biodeterioration & Biodegradation Pub Date : 2025-02-01 DOI: 10.1016/j.ibiod.2024.105984

Chen Sun , Jun Dong , Mengyue Zhang , Chaoge Yang

引用次数: 0

Optimizing biodegradation of polychlorinated biphenyls (PCBs) using bacteria isolated from common effluent treatment plant (CETP) sludge: Integration of machine learning, kinetic studies, and metabolomic analysis

IF 4.1 2区环境科学与生态学

International Biodeterioration & Biodegradation Pub Date : 2025-02-01 DOI: 10.1016/j.ibiod.2024.105992

Pooja Thathola , Soumya Haldar

{"title":"Optimizing biodegradation of polychlorinated biphenyls (PCBs) using bacteria isolated from common effluent treatment plant (CETP) sludge: Integration of machine learning, kinetic studies, and metabolomic analysis","authors":"Pooja Thathola , Soumya Haldar","doi":"10.1016/j.ibiod.2024.105992","DOIUrl":"10.1016/j.ibiod.2024.105992","url":null,"abstract":"<div><div>The present study demonstrates the effective biodegradation of six polychlorinated biphenyls (PCBs) using microbial consortia consisting of <em>Bacillus</em> sp. and <em>Stutzerimonas</em> sp. Isolated from common effluent treatment plant (CETP) sludge for sustainable environmental remediation. The process during the degradation was optimized using machine learning Artificial Neural Networks (ANN) and Response Surface Methodology (RSM) with Box-Behnken Design (BBD), leading to high degradation efficiencies: 100% for PCB28 and PCB52, 98.89% for PCB101, 98.85% for PCB138, 95.89% for PCB153, and 88.56% for PCB180. The metabolites generated during the study are less toxic and nontoxic. The consortium followed two degradation pathways; acetyl CoA and Pyruvic acid. Further, the degradation kinetics studied during the process reveals that PCB138,153and 180 followed first-order kinetics, while PCB 28, 52, and 101 followed second-order kinetics. Moreover, the bacterial growth kinetics were studied using the Gompertz fitting curve with an R<sup>2</sup> value of 0.9405. The findings underscore the importance of fine-tuning biodegradation processes to enhance their efficiency, ultimately contributing to greener, more sustainable methods for PCB remediation. By integrating machine learning and statistical optimization, this study paves the way for future advancements in environmental biotechnology aimed at mitigating the adverse impacts of PCBs on ecosystems and human health.</div></div>","PeriodicalId":13643,"journal":{"name":"International Biodeterioration & Biodegradation","volume":"198 ","pages":"Article 105992"},"PeriodicalIF":4.1,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143164776","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

Assessment of glutaraldehyde and formaldehyde for enhancing decay resistance and reducing caffeine leachability in Scots pine wood

IF 4.1 2区环境科学与生态学

International Biodeterioration & Biodegradation Pub Date : 2025-02-01 DOI: 10.1016/j.ibiod.2025.106014

Yeray Manuel López-Gómez , Ville H. Nissinen , Aitor Barbero-López , Martti Venäläinen , Antti Haapala

{"title":"Assessment of glutaraldehyde and formaldehyde for enhancing decay resistance and reducing caffeine leachability in Scots pine wood","authors":"Yeray Manuel López-Gómez , Ville H. Nissinen , Aitor Barbero-López , Martti Venäläinen , Antti Haapala","doi":"10.1016/j.ibiod.2025.106014","DOIUrl":"10.1016/j.ibiod.2025.106014","url":null,"abstract":"<div><div>Caffeine-treated wood is valued for its decay resistance, but caffeine high leachability under outdoor conditions significantly reduces its long-term effectiveness. This study aimed to mitigate the leachability of caffeine-impregnated Scots pine wood by incorporating either formaldehyde or glutaraldehyde. The treatments were evaluated using standard leachability analysis (EN 84), decay resistance testing (EN 113), mass spectrometry, attenuated total reflectance Fourier transform infrared (ATR-FTIR) spectroscopy, and mechanical testing. Leaching tests revealed that caffeine-glutaraldehyde-impregnated wood exhibited the lowest mass loss after leaching (3.30 ± 0.15%), outperforming caffeine-treated (6.18 ± 0.15%) and caffeine-formaldehyde-treated (5.94 ± 0.13%) specimens, indicating superior caffeine fixation. ATR-FTIR spectroscopy showed that characteristic caffeine bands diminished following leaching, confirming caffeine leachability. However, caffeine-glutaraldehyde-treated samples exhibited less pronounced spectral changes compared to caffeine-formaldehyde-treated samples. Mass spectrometry further corroborated these findings, detecting higher caffeine content in glutaraldehyde-treated wood than in caffeine-only specimens after leaching test. Decay resistance tests demonstrated that caffeine-glutaraldehyde-treated wood retained high resistance to fungal decay both before and after leaching. Mechanical tests revealed that the modulus of rupture (MOR) was preserved post-leaching only in caffeine-glutaraldehyde-treated samples. These findings highlight the effectiveness of low concentrations of glutaraldehyde in reducing caffeine leachability, thereby enhancing the decay resistance and durability of treated wood, making it a promising approach for outdoor applications.</div></div>","PeriodicalId":13643,"journal":{"name":"International Biodeterioration & Biodegradation","volume":"198 ","pages":"Article 106014"},"PeriodicalIF":4.1,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143165454","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

MIL-88A(Fe) modified carriers induced iron autotrophic denitrification in intermittently-aerated MBBR for low C/N wastewater treatment

IF 4.1 2区环境科学与生态学

International Biodeterioration & Biodegradation Pub Date : 2025-02-01 DOI: 10.1016/j.ibiod.2025.106009

Zhonghong Guo, Jiaqi Yang, Ya-nan Luan, Yue Yin, Feng Zhang, Changqing Liu

{"title":"MIL-88A(Fe) modified carriers induced iron autotrophic denitrification in intermittently-aerated MBBR for low C/N wastewater treatment","authors":"Zhonghong Guo, Jiaqi Yang, Ya-nan Luan, Yue Yin, Feng Zhang, Changqing Liu","doi":"10.1016/j.ibiod.2025.106009","DOIUrl":"10.1016/j.ibiod.2025.106009","url":null,"abstract":"<div><div>Iron-assisted wastewater treatment has garnered significant attentions due to its promising potential for nitrogen removal under low carbon/nitrogen (C/N) ratios. However, the continuous addition of iron would result in unacceptably high operational cost. Herein, the iron mental-organic frame (MIL-88A(Fe)) modified sponge (MS) was developed as a source of continuous reactive iron sites and integrated in an intermittently-aerated moving bed biofilm reactor (MBBR) to enhance nitrogen removal efficiency under low (C/N) ratios. The results demonstrated that the MS-assisted system achieved stable total nitrogen removal of 76.2 ± 6.0% without adding additional iron and carbon sources when the C/N was 3.5 ± 0.3. After MS addition, the electron transport system activity increased from 8.2 ± 0.9 μgO<sub>2</sub>/g/h to 12.7 ± 2.6 μgO<sub>2</sub>/g/h, and the scanning electron microscope images revealed that the MS were covered with biofilm. Meanwhile, iron autotrophic bacteria (<em>Thermomonas</em>, <em>Dechloromonas</em>) and heterotrophic denitrifying bacteria (<em>Candidatus_Competibacter</em>) were enriched in the MS-assisted system, confirming the successful inducing of iron autotrophic denitrification process inside the reactor. This study revealed the effect of MS addition on microbial community succession and their pollutants removal characteristics, offering a feasible strategy for low C/N wastewater treatment.</div></div>","PeriodicalId":13643,"journal":{"name":"International Biodeterioration & Biodegradation","volume":"198 ","pages":"Article 106009"},"PeriodicalIF":4.1,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143165456","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

Micro-Phyto-assisted reduction of Hexachlorocyclohexane (HCH) contamination in soil: A sustainable solution to mitigate HCH pollution

IF 4.1 2区环境科学与生态学

International Biodeterioration & Biodegradation Pub Date : 2025-02-01 DOI: 10.1016/j.ibiod.2024.105974

Aditi Roy , Priya Dubey , Sandhya Mishra , Poornima Vajpayee , Suchi Srivastava , Pankaj Kumar Srivastava

{"title":"Micro-Phyto-assisted reduction of Hexachlorocyclohexane (HCH) contamination in soil: A sustainable solution to mitigate HCH pollution","authors":"Aditi Roy , Priya Dubey , Sandhya Mishra , Poornima Vajpayee , Suchi Srivastava , Pankaj Kumar Srivastava","doi":"10.1016/j.ibiod.2024.105974","DOIUrl":"10.1016/j.ibiod.2024.105974","url":null,"abstract":"<div><div>This study pioneers a sustainable solution for Hexachlorocyclohexane (HCH) remediation through a unique microbe-assisted phytoremediation strategy, utilizing <em>Ricinus communis</em> inoculated with a novel yeast-bacteria rhizo-inoculum, <em>Priestia megaterium</em> and <em>Meyerozyma caribbica</em>. This combination achieved unprecedented reductions of its various isomeric residues <em>viz</em>. α-HCH (85.09%), β-HCH (91.80%), γ-HCH (95.24%), and δ-HCH (89.78%) over a 90-day pot experiment. <em>R. communis</em> demonstrated significant bioaccumulation of ΣHCH, primarily in its roots, followed by shoots and leaves. The HCH-exposed plants treated with mixed culture treatment exhibited a marked decrease in antioxidative defense enzyme activities: SOD (79%), APX (56%), GPX (68%), and CAT (55%) compared to control plants. Additionally, reduction of HCH residues in rhizospheric soil was significantly enhanced in the presence of microbial inoculum. Multivariate Principal Component Analysis (PCA) indicated significant differences in soil physico-chemical properties and plant enzymatic activities between treatments, closely linked to variations in HCH concentrations. PCA components accounted for 49.07% (PC1) and 15.02% (PC2) of the total variance in soil properties, and 65.66% (PC1) and 19.04% (PC2) in root enzymatic activities, with leaf enzymatic activities showing 69.70% (PC1) and 15.20% (PC2). These results suggest that inoculating <em>R. communis</em> with this novel yeast-bacteria mixed culture offers a highly effective and promising approach for the remediation of HCH-contaminated sites.</div></div>","PeriodicalId":13643,"journal":{"name":"International Biodeterioration & Biodegradation","volume":"198 ","pages":"Article 105974"},"PeriodicalIF":4.1,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143164662","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

Assessing the compost-ability of oil refinery sludge in the presence or absence of earthworms: An eco-friendly approach of biodegradation

IF 4.1 2区环境科学与生态学

International Biodeterioration & Biodegradation Pub Date : 2025-02-01 DOI: 10.1016/j.ibiod.2024.105987

Snigdha Nath , Ujjal Dutta , Sumpam Tangjang , Subhasish Das

{"title":"Assessing the compost-ability of oil refinery sludge in the presence or absence of earthworms: An eco-friendly approach of biodegradation","authors":"Snigdha Nath , Ujjal Dutta , Sumpam Tangjang , Subhasish Das","doi":"10.1016/j.ibiod.2024.105987","DOIUrl":"10.1016/j.ibiod.2024.105987","url":null,"abstract":"<div><div>Composting offers a low-cost and sustainable approach in waste management, however, knowledge about its feasibility in oil refinery sludge (ORS) bioconversion is unknown. We investigated the efficiency of three composting systems, viz., <em>Eisenia</em>-system (with <em>Eisenia fetida</em>), <em>Eudrilus</em>-system (with <em>Eudrilus eugeniae</em>), and non-earthworm system for ORS bioconversion. The earthworm-based systems recorded greater increment in available nutrients and reduction of heavy metals than non-earthworm system. The <em>Eudrilus</em>-system recorded an increment in total bacterial count by 10%, while P-solubilizing bacteria increased five-folds in <em>Eisenia</em>-system. Additionally, higher economic benefit was observed in terms of net present value (US $ 203.08), benefit-to-cost ratio (0.63) and pay-back time (1 year and 6 months) in the <em>Eudrilus-</em>processed ORS composting approach. The earthworm-based systems also demonstrated higher activity of urease, alkaline phosphatase and dehydrogenase. The clean index (>4) and fertility index (>3.1) of earthworm-sourced composts reflected their high manurial potential. The compost quality index (CQI >7) indicated that presence of earthworms greatly facilitated the bioconversion of ORS due to higher humification and microbial diversity. Principal component analysis identified water holding capacity, total C, NPK, and earthworm growth as the major contributors in CQI. Moreover, the strong influence of enzymes in CQI (R<sup>2</sup> = 0.64) was corroborated by the linear regression analysis. Our findings underscore the potential of earthworm-based bio-systems in ORS-remediation, offering a viable way in its management while producing fortified organic manure.</div></div>","PeriodicalId":13643,"journal":{"name":"International Biodeterioration & Biodegradation","volume":"198 ","pages":"Article 105987"},"PeriodicalIF":4.1,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143164687","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