Inhibitive Properties of Benzyldimethyldodecylammonium Chloride on Microbial Corrosion of 304 Stainless Steel in a Desulfovibrio desulfuricans-Inoculated Medium

Abstract

Biocides are frequently used to control sulfate-reducing bacteria (SRB) in biofouling. The increasing restrictions of environmental regulations and growing safety concerns on the use of biocides result in efforts to minimize the amount of biocide use and develop environmentally friendly biocides. In this study, the antimicrobial activity and corrosion inhibition effect of a low-toxic alternative biocide, benzyldimethyldodecylammonium chloride (BDMDAC), on a 304 stainless steel substrate immersed in a Desulfovibrio desulfuricans (D. desulfuricans)-inoculated medium was examined. Potentiodynamic polarization curves were used to analyze corrosion behavior. Biofilm formation and corrosion products on the surfaces of 304 stainless steel coupons were examined using scanning electron microscopy (SEM), energy-dispersive X-ray spectrum, and confocal laser scanning microscopy (CLSM). Results demonstrated that this compound exhibited satisfactory results against microbial corrosion by D. desulfuricans. The corrosion current density and current densities in the anodic region were lower in the presence of BDMDAC in the D. desulfuricans-inoculated medium. SEM and CLSM analyses revealed that the presence of BDMDAC mitigated formation of biofilm by D. desulfuricans.

Antimicrobial and Anticorrosion Activity of a Novel Composite Biocide against Mixed Bacterial Strains in Taiwanese Marine Environments

“…As shown in Table 2 , energy-dispersive X-ray spectroscopy (EDS) revealed that this substance was mainly composed of Fe, Cr, Ni, O, S, and P. Iron oxide, among other oxides, is a possible source of oxygen. S can be traced to the SRB in the inocula; this may constitute evidence of the formation of FeS in the biofilm [ 5 , 30 ]. The presence of P is related to the sodium phosphate (Na 2 PO 4 ) in the culture medium.…”

“…In our previous study, the antimicrobial properties of BDMDAC in anaerobic conditions against Dulsulfovibrio desulfuricans were investigated. We previously observed that the application of 25 ppm BDMDAC achieved satisfactory results against microbial corrosion by D. desulfuricans [ 30 ]. According to their respective material safety datasheets (Alfa Aesar, Ward Hill, MA, USA), the medial lethal dose (LD 50 ) of BDMDAC indicates it is less toxic than tributyltin (LD 50 of BDMDAC: 400 mg/kg in rats; LD 50 of tributyltin: 132 mg/kg in rats), but the toxicity of BDMDAC continues to call into question its use.…”

Strategies for Improving Antimicrobial Properties of Stainless Steel

“…Many different approaches have been attempted to thwart microbial corrosion [ 100 ], to counteract bacterial adhesion [ 101 ] or to confer bactericidal or antibacterial properties to the material surfaces [ 102 , 103 ], while also improving biological responses, such as hemocompatibility [ 101 , 103 ]. Future research will undoubtedly be aimed at optimizing the biological performances of materials, such as SS, by modifying their surfaces.…”

Graphene Coating as an Effective Barrier to Prevent Bacteria-Mediated Dissolution of Gold

“…This choice is connected to the fact that this metal is not Microbial induced corrosion (MIC) corresponds to the corrosion process influenced or driven by the presence of microbial biofilms adhered to the metal surface. MIC prevails in diverse industries and sectors where biofilms are formed on surfaces, and leads to degradation and failure of materials such as carbon steel [3][4][5], aluminum alloys [6][7][8], copper and copper alloys [9][10][11], stainless steel [12][13][14] and concrete [15][16][17]. Some microorganisms in biofilms exhibit extreme tolerance to hostile environments such as acidic and alkaline pH, low and higher temperatures, as well as pressure gradients, and as consequence, MIC has been found in power plants [18], oil and gas pipelines [19], public water supply systems [20], sewers [21], marine engineering infrastructure [22], water cooled heat exchangers [12], radioactive disposal facilities [23], medical devices [24], and even in the water recovery system of the International Space Station (ISS) [24,25] and the Chinese space station [26].…”