Multiple Applications of a Novel Cationic Gemini Surfactant: Anti-Microbial, Anti-Biofilm, Biocide, Salinity Corrosion Inhibitor, and Biofilm Dispersion (Part II)

Abstract

The Egyptian petroleum industries are incurring severe problems with corrosion, particularly corrosion that is induced by sulfidogenic microbial activities in harsh salinity environments despite extensively using biocides and metal corrosion inhibitors. Therefore, in this study, a synthesized cationic gemini surfactant (SCGS) was tested as a broad-spectrum antimicrobial, anti-bacterial, anti-candida, anti-fungal, anti-biofilm (anti-adhesive), and bio-dispersion agent. The SCGS was evaluated as a biocide against environmental sulfidogenic-bacteria and as a corrosion inhibitor for a high salinity cultivated medium. The SCGS displayed wide spectrum antimicrobial activity with minimum bactericidal/fungicidal inhibitory concentrations. The SCGS demonstrated anti-bacterial, anti-biofilm, and bio-dispersion activity. The SCGS exhibited bactericidal activity against environmental sulfidogenic bacteria and the highest corrosion inhibition efficiency of 93.8% at 5 mM. Additionally, the SCGS demonstrated bio-dispersion activity against the environmental sulfidogenic bacteria at 5.49% salinity. In conclusion, this study provides a novel synthesized cationic surfactant with many applications in the oil and gas industry: as broad-spectrum antimicrobial and anti-biofilm agents, corrosion inhibition for high salinity, biocides for environmentally sulfidogenic bacteria, and as bio-dispersion agents.

Construction, petro-collecting/dispersing capacities, antimicrobial activity, and molecular docking study of new cationic surfactant-sulfonamide conjugates

“…The lowest concentration of a biocide that is able to stop all progression of the microbial growth during a bioassay test is the minimum inhibitory concentration (MIC) [22] . However, the lowest concentration that exterminates 99% of the proliferated germs is called the minimum bactericidal/fungicidal concentration (MBC/MFC).…”

“…A big issue such as oil well souring may occur due to the extreme multiplication of SRB cells. Cationic surfactants exhibit high efficiency in killing the SRB [15] , [18] , [19] and some reports confirm the importance of some functionality like amino, cyano, hydroxy, and mercapto groups [18] , [19] , [20] , [21] , [22] , [23] in enhancing the biological activity [24] , [25] . For instance, introducing hydroxyl group could significantly improve the water solubility of the cationic surfactants, while sulfonamide group helped the them to achieve good antimicrobial activity [26] , [27] , [28] .…”

Novel Treatment for Mitigating Condensate Bank Using a Newly Synthesized Gemini Surfactant

“…Several researchers reported the efficacy of gemini surfactants in altering the rock wettability [48][49][50]. In addition, gemini surfactant possesses other interesting properties, such as low critical micelle concentration (CMC) [51,52]. In this work, GS was used to reduce the oil-wetness and therefore enhance the condensate mobility.…”

Progressive Applications of Hyperbranched Polymer Based on Diarylamine: Antimicrobial, Anti-Biofilm and Anti-Aerobic Corrosion

“…A semi-quantitative adherence assay on 96-well tissue culture plates was used to study the antibiofilms (the bacterial adhesion of B. subtilis and E. coli) of the synthesized HB(PDMA)s G 2 , G 3 , and G 4 , as previously reported [32]. The bacterial inocula (100 µL) were prepared according to the CLSI method [30] and started with approximate concentrations of 1-2 × 10 8 CFU/mL and 1-2 × 10 9 CFU/mL for B. subtilis and E. coli, respectively.…”