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<p>Sulfate-utilizing bacteria, commonly known as sulfur bacteria, include sulfate-reducing bacteria (SRB), sulfur-oxidizing bacteria (SOB), and sulfur-reducing bacteria. A significant issue with SRB is their production of H₂S, leading to microbial corrosion, especially in the oil and gas industry. So enrichment of SRB was conducted using Baar’s medium, the selective organisms were identified using MALDI-TOF as <i>Pseudomonas aeruginosa</i> and <i>Acinetobacter tandoii.</i> Both the organisms showed sulfate reduction in facultative anaerobic condition. <i>Pseudomonas aeruginosa</i> reduced 84.4% of sulfate in 24&#xa0;h, while <i>Acinetobacter tandoii</i> reduced 78.4% of sulfate. Cadmium sulfide nanoparticles are characterized with − 20 to − 24&#xa0;mV zeta potential and SEM, with 7-µm size shown effective antimicrobial properties against SRB. MIC of Cs NPs on <i>Pseudomonas</i> and <i>Acinetobacter</i> was found 2&#xa0;mg and 4&#xa0;mg respectively. The crystallinity of CdS was determined using X-ray diffraction (XRD). The sulfate ion concentration was measured using ion chromatography. Within 24&#xa0;h, 92.8% of the sulfate was inhibited, with a detection limit of 0.16&#xa0;µg/mL and a quantification limit of 0.50&#xa0;µg/mL. This study is the first to report the antimicrobial and corrosion-inhibitory properties of CdS nanoparticles against facultative anaerobic sulfate-reducing bacteria.</p>

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Cadmium Sulfide Nanoparticles as Corrosion Inhibitors for Sulfate-Reducing Bacteria

  • 期刊论文

  • 发表日期：

    2025年10月18日

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  • Fatima Ishak Dhabu,
  • Viral Shukla,
  • Yadvendra Agarwal

摘要

Sulfate-utilizing bacteria, commonly known as sulfur bacteria, include sulfate-reducing bacteria (SRB), sulfur-oxidizing bacteria (SOB), and sulfur-reducing bacteria. A significant issue with SRB is their production of H₂S, leading to microbial corrosion, especially in the oil and gas industry. So enrichment of SRB was conducted using Baar’s medium, the selective organisms were identified using MALDI-TOF as Pseudomonas aeruginosa and Acinetobacter tandoii. Both the organisms showed sulfate reduction in facultative anaerobic condition. Pseudomonas aeruginosa reduced 84.4% of sulfate in 24 h, while Acinetobacter tandoii reduced 78.4% of sulfate. Cadmium sulfide nanoparticles are characterized with − 20 to − 24 mV zeta potential and SEM, with 7-µm size shown effective antimicrobial properties against SRB. MIC of Cs NPs on Pseudomonas and Acinetobacter was found 2 mg and 4 mg respectively. The crystallinity of CdS was determined using X-ray diffraction (XRD). The sulfate ion concentration was measured using ion chromatography. Within 24 h, 92.8% of the sulfate was inhibited, with a detection limit of 0.16 µg/mL and a quantification limit of 0.50 µg/mL. This study is the first to report the antimicrobial and corrosion-inhibitory properties of CdS nanoparticles against facultative anaerobic sulfate-reducing bacteria.