Newly imine-azo dicationic amphiphilic for corrosion and sulfate-reducing bacteria inhibition in petroleum processes: Laboratory and theoretical studies

• Published in: Applied surface science Vol. 573; p. 151531
• Main Authors: El-Tabei, A.S., El-Tabey, Amira E., El Basiony, N.M.
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 30.01.2022
• Subjects: DFT; Dicationic surfactant; SEM; SRB; Tafel; SRB; SEM; DFT; Tafel; MC; Dicationic surfactant
• ISSN: 0169-4332; 1873-5584
• DOI: 10.1016/j.apsusc.2021.151531

[Display omitted] •SDCAC is CS corrosion inhibitor in HCl with > 97% efficiency.•SEM pictures reflects the SDCAC safeguard role in CS protection.•SDCAC suppresses the SRB activity.•MC returned the activity of SDCAC in to its high adsorption affinity.•Rct and θ of CS increased due to adsorption of SDCAC. Oil and gas process faces a large dilemma during the acidizing job. So, dicationic surfactant namely; 1-dodecyl-3-((E)-(4-(((E)-(1-dodecylpyridin-1-ium-4-yl) methylene)amino)-2-hydroxyphenyl) diazenyl)pyridin-1-iumdibromide (SDCAC) was synthesized. Spectroscopic and CHN elemental analysis studies confirmed the SDCAC structure. SDCAC has Surface active properties. The anticorrosion performance of SDCAC for carbon steel (CS) in 1.0 M HCl has been validated gravimetrically and electrochemically accompanied with surface analysis studies. SDCAC enhances the resistance of CS corrosion by 98%. Tafel data classify SDCAC as a hybrid anticorrosive substance. Adsorption of SDCAC is more fitted to the Langmuir adsorption isotherm model. Theoretical indices of SDCAC affirm its tendency toward adsorption. The activity of SDCAC against sulfate reducing bacteria (SRB) has been examined and promising outcomes have been achieved. According to the findings of this investigation, the SDCAC can reduce SRB growth from 107 to102 cell/ml.