Potential of dynamic bacterial communities in the bio-corrosion process: a proof study with surface morphology of metal coupons

Basera, Priyanka; Lavania, Meeta; Lal, Banwari

doi:10.1039/c9ra01959f

Cited by 10 publications

(2 citation statements)

References 52 publications

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“…In addition, H 2 S reacts with metal surfaces to produce metal sulfides (e.g., FeS). FeS induces a local decrease in pH by forming a thin film on the metal surface, which is highly unstable in nature., This elevates the cracking of the passive film, giving rise to highly active corrosion cells between the FeS acting as the cathode and the steel surface acting as anode [ 23 , 63 ]. Oxidation–reduction reactions of sulfur and sulfur compounds mediated by cells within biofilms are crucial mechanisms contributing to biocorrosion.…”

Section: Resultsmentioning

confidence: 99%

Text-Mining to Identify Gene Sets Involved in Biocorrosion by Sulfate-Reducing Bacteria: A Semi-Automated Workflow

et al. 2023

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A significant amount of literature is available on biocorrosion, which makes manual extraction of crucial information such as genes and proteins a laborious task. Despite the fast growth of biology related corrosion studies, there is a limited number of gene collections relating to the corrosion process (biocorrosion). Text mining offers a potential solution by automatically extracting the essential information from unstructured text. We present a text mining workflow that extracts biocorrosion associated genes/proteins in sulfate-reducing bacteria (SRB) from literature databases (e.g., PubMed and PMC). This semi-automatic workflow is built with the Named Entity Recognition (NER) method and Convolutional Neural Network (CNN) model. With PubMed and PMCID as inputs, the workflow identified 227 genes belonging to several Desulfovibrio species. To validate their functions, Gene Ontology (GO) enrichment and biological network analysis was performed using UniprotKB and STRING-DB, respectively. The GO analysis showed that metal ion binding, sulfur binding, and electron transport were among the principal molecular functions. Furthermore, the biological network analysis generated three interlinked clusters containing genes involved in metal ion binding, cellular respiration, and electron transfer, which suggests the involvement of the extracted gene set in biocorrosion. Finally, the dataset was validated through manual curation, yielding a similar set of genes as our workflow; among these, hysB and hydA, and sat and dsrB were identified as the metal ion binding and sulfur metabolism genes, respectively. The identified genes were mapped with the pangenome of 63 SRB genomes that yielded the distribution of these genes across 63 SRB based on the amino acid sequence similarity and were further categorized as core and accessory gene families. SRB’s role in biocorrosion involves the transfer of electrons from the metal surface via a hydrogen medium to the sulfate reduction pathway. Therefore, genes encoding hydrogenases and cytochromes might be participating in removing hydrogen from the metals through electron transfer. Moreover, the production of corrosive sulfide from the sulfur metabolism indirectly contributes to the localized pitting of the metals. After the corroboration of text mining results with SRB biocorrosion mechanisms, we suggest that the text mining framework could be utilized for genes/proteins extraction and significantly reduce the manual curation time.

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Section: Resultsmentioning

confidence: 99%

Text-Mining to Identify Gene Sets Involved in Biocorrosion by Sulfate-Reducing Bacteria: A Semi-Automated Workflow

et al. 2023

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“…The biosurfactant was also tested for oil spreading and drop collapse method. The functional group of biosurfactant was determined by Fourier transform infrared spectroscopy (ATR-FTIR model Nicolet, 6700) equipped with an ATR accessory [17,18].…”

Section: Plos Onementioning

confidence: 99%

Instigation of indigenous thermophilic bacterial consortia for enhanced oil recovery from high temperature oil reservoirs

et al. 2020

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The purpose of the study involves the development of an anaerobic, thermophilic microbial consortium TERIK from the high temperature reservoir of Gujarat for enhance oil recovery. To isolate indigenous microbial consortia, anaerobic baltch media were prepared and inoculated with the formation water; incubated at 65˚C for 10 days. Further, the microbial metabolites were analyzed by gas chromatography, FTIR and surface tension. The efficiency of isolated consortia towards enhancing oil recovery was analyzed through core flood assay. The novelty of studied consortia was that, it produces biomass (600 mg/l), bio-surfactant (325 mg/l), and volatile fatty acids (250 mg/l) at 65˚C in the span of 10 days, that are adequate to alter the surface tension (70 to 34 mNm-1) and sweep efficiency of zones facilitating the displacement of oil. TERIK was identified as Clostridium sp. The FTIR spectra of biosurfactant indicate the presence of N-H stretch, amides and polysaccharide. A core flooding assay was designed to explore the potential of TERIK towards enhancing oil recovery. The results showed an effective reduction in permeability at residual oil saturation from 2.14 ± 0.1 to 1.39 ± 0.05 mD and 19% incremental oil recovery.

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Enhanced Oil Recovery Using Indigenous Microbiome of High Temperature Oil Reservoirs

et al. 2023

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Potential of dynamic bacterial communities in the bio-corrosion process: a proof study with surface morphology of metal coupons

Abstract: Bio-corrosion is a well-known phenomenon of corrosion caused by bacterial communities.

Cited by 10 publications

References 52 publications

Text-Mining to Identify Gene Sets Involved in Biocorrosion by Sulfate-Reducing Bacteria: A Semi-Automated Workflow

Text-Mining to Identify Gene Sets Involved in Biocorrosion by Sulfate-Reducing Bacteria: A Semi-Automated Workflow

Instigation of indigenous thermophilic bacterial consortia for enhanced oil recovery from high temperature oil reservoirs

Enhanced Oil Recovery Using Indigenous Microbiome of High Temperature Oil Reservoirs

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