Postgate, J. R., The Sulfate‐Reducing Bacteria (2nd Edition) X + 208 S., 20 Abb., 4 Tab. University Press, Cambridge 1983. US $ 39.50

Schwartz, W.

doi:10.1002/jobm.3620250311

Cited by 10 publications

(7 citation statements)

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“…1Sa of Supplementary material). The pH values remained constant throughout the experiment for all the drug concentrations tested and were within the optimum pH range for SRB growth which are between 5 and 8 [48,53,54].…”

Section: Cultures In the Presence Of Sodium Lactate And Flx As Supplementary Carbon Source Under Anaerobic Conditionsmentioning

confidence: 77%

“…Initially, FLX removal was studied in anaerobic cultures, where 20, 50 and 100 mg/L of the drug was added simultaneously with 7.75 g/L of sodium lactate (carbon source used in the standard Postgate B medium composition) [53] under sulphate reducing conditions as described in Table 2.…”

Section: Cultures In the Presence Of Sodium Lactate And Flx As Supplementary Carbon Source Under Anaerobic Conditionsmentioning

confidence: 99%

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Anaerobic biodegradation of fluoxetine using a high-performance bacterial community

Palma

Costa

2021

Anaerobe

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Fluoxetine (FLX), an antidepressant extensively used worldwide is considered an emerging pollutant. The present work intends to investigate for the first time the capacity of a bacterial community containing sulphate-reducing bacteria (SRB) enriched from an anaerobic sludge to biodegrade and use FLX as sole carbon source, since current literature suggests that this drug is poorly biodegraded being mainly removed by adsorption to sediments, where it persists. FLX was biodegraded under sulphate reducing conditions until reaching its lowest and reliably detectable concentration, when 20 mg/L of the drug was used as sole carbon source, while 66 ± 9% of 50 mg/L FLX was removed, after 31 days. The initial bacterial population was mainly constituted by Desulfomicrobium and Desulfovibrio whereas during the experiments using FLX as unique carbon source a clear shift occurred with the increase of vadinBC27 wastewater-sludge group, Macellibacteroidetes, Dethiosulfovibrio, Bacteroides, Tolumonas, Sulfuricurvum, f_Enterobacteriaceae_OTU_18 that are assumed for the first time as FLX degrading bacteria. Although the main mechanism of FLX removal described in literature is by adsorption, in the results herein presented anaerobic biodegradation appears to play the main role in the removal of the FLX, thus demonstrating the potentialities that the anaerobic processes can play in wastewater treatment aiming the removal of new emerging compounds.

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Section: Cultures In the Presence Of Sodium Lactate And Flx As Supplementary Carbon Source Under Anaerobic Conditionsmentioning

confidence: 77%

Section: Cultures In the Presence Of Sodium Lactate And Flx As Supplementary Carbon Source Under Anaerobic Conditionsmentioning

confidence: 99%

Anaerobic biodegradation of fluoxetine using a high-performance bacterial community

Palma

Costa

2021

Anaerobe

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“…The bacteria consortium in this study was obtained from a water sample with a salinity content (NaCl) of 2.6% that was collected from a water tank of North Bahria, Qarun Petroleum Company, western desert, Egypt. In the field, the water sample was enriched using an anaerobic selective media (modified Postgate´s-B medium) according to Postgate 55 . Modification in Postgate’s medium composition was done using the original water salinity (NaCl) of 2.6% and pH of 6.76 during media preparation.…”

Section: Experimental Workmentioning

confidence: 99%

Detectable quorum signaling molecule via PANI-metal oxides nanocomposites sensors

Gado,

Al-Gamal,

Badawy

et al. 2024

Sci Rep

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The detection of N-hexanoyl-l-homoserine lactone (C6-HSL), a crucial signal in Gram-negative bacterial communication, is essential for addressing microbiologically influenced corrosion (MIC) induced by sulfate-reducing bacteria (SRB) in oil and gas industries. Metal oxides (MOx) intercalated into conducting polymers (CPs) offer a promising sensing approach due to their effective detection of biological molecules such as C6-HSL. In this study, we synthesized and characterized two MOx/polyaniline-dodecyl benzene sulfonic acid (PANI-DBSA) nanocomposites, namely ZnO/PANI-DBSA and Fe2O3/PANI-DBSA. These nanocomposites were applied with 1% by-weight carbon paste over a carbon working electrode (WE) for qualitative and quantitative detection of C6-HSL through electrochemical analysis. The electrochemical impedance spectroscopy (EIS) confirmed the composites’ capability to monitor C6-HSL produced by SRB-biofilm, with detection limits of 624 ppm for ZnO/PANI-DBSA and 441 ppm for Fe2O3/PANI-DBSA. Furthermore, calorimetric measurements validated the presence of SRB-biofilm, supporting the EIS analysis. The utilization of these MOx/CP nanocomposites offers a practical approach for detecting C6-HSL and monitoring SRB-biofilm formation, aiding in MIC management in oil and gas wells. The ZnO/PANI-DBSA-based sensor exhibited higher sensitivity towards C6-HSL compared to Fe2O3/PANI-DBSA, indicating its potential for enhanced detection capabilities in this context. Stability tests revealed ZnO/PANI-DBSA's superior stability over Fe2O3/PANI-DBSA, with both sensors retaining approximately 85–90% of their initial current after 1 month, demonstrating remarkable reproducibility and durability.

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“…The bacteria consortium in this study was obtained from a water sample with a salinity content (NaCl) of 2.6% that was collected from a water tank of North Bahria, Qarun Petroleum Company, western desert, Egypt. In the eld, the water sample was enriched using an anaerobic selective media (modi ed Postgate´s-B medium) according to Postgate [42]. Modi cation in Postgate´s medium composition was done using the original water salinity (NaCl) of 2.6% and pH of 6.76 during media preparation.…”

Section: Srb Media Preparation and Cultivationmentioning

confidence: 99%

“…Media preparation, enrichment and cultivation were according to the modi ed Hungate's technique for anaerobes [43]. Afterwards, the enriched SRB sample was further enriched and used as inocula for the cultivated reactors at 37°C for 14 days and the black precipitation (Ferrous sul de) was noticed [42]. The bacterial count was estimated for the inocula using the most probable number (MPN) [44].…”

Section: Srb Media Preparation and Cultivationmentioning

confidence: 99%

Quorum-Signaling Molecule Detection Based on Composite Sensors: Metal Oxides/Conducting Polymer

Gado

Al-Gamal

Badawy

et al. 2023

Preprint

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N-hexanoyl-l-homoserine lactone (C6-HSL) is a distinctive signal produced by Gram-negative bacterial strains. The signal is used to cell-to-cell communication. Oil and gas companies are suffering from Microbiologically-influenced corrosion (MIC) induced Sulfate-reducing bacteria (SRB. SRB induce severe pitting corrosion on the metal surface especially when attached and form biofilms. Nowadays, scientists are looking for an applicable method to detect SRB-biofilms. Metal oxides (MOx) intercalated into a polymers matrix, specifically conducting polymers (CPs), to sense different biological molecules effectively such as C6-HSL due to its ability to form a coordination bond and its high selectivity. Therefore, this work was directed to provide a novel quorum-signaling molecule, C6-HSL, sensing technique to distinguish invisible SRB-biofilms attached to a metal surface. Hence, two different MOx/Polyaniline-Dodecyl benzene sulfonic acid (PANI-DBSA) composites (ZnO/PANI-DBSA and Fe2O3/PANI-DBSA) were synthesized and structurally characterized. Afterwards, the composites were applied with carbon paste 1% by weight over a carbon working electrode (WE) to detect the C6-HSL qualitatively and quantitatively via an electrochemical analysis. The electrochemical impedance spectroscopy (EIS) verified the ability of the obtained composites to monitor the C6-HSL produced by SRB-biofilm compared to the standard material. The monitoring composites achieved the intended results where the observation swapped from 50 to 1000 ppm of the C6-HSL concentrations. The limit of detection (LOD) of the ZnO/PANI-DBSA and Fe2O3/PANI-DBSA was 624 and 441 ppm, respectively. Furthermore, the SRB-biofilm was confirmed by a calorimetric measurement in addition to EIS, where the outcomes were compatible.

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Postgate, J. R., The Sulfate‐Reducing Bacteria (2nd Edition) X + 208 S., 20 Abb., 4 Tab. University Press, Cambridge 1983. US $ 39.50

Cited by 10 publications

References 0 publications

Anaerobic biodegradation of fluoxetine using a high-performance bacterial community

Anaerobic biodegradation of fluoxetine using a high-performance bacterial community

Detectable quorum signaling molecule via PANI-metal oxides nanocomposites sensors

Quorum-Signaling Molecule Detection Based on Composite Sensors: Metal Oxides/Conducting Polymer

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