Assessing bifunctional benzyldodecyldimethylammonium bromide in mitigating abiotic and biotic corrosion using a new test kit (C2026-00142)
Monday, March 16, 2026
11:00 AM - 11:30 AM Central
Location: 361 AB
Earn .5 PDH
Interested in reading the entire paper? Click on the "Paper" button below to read on the AMPP Knowledge Hub!
*Please note, if your registration came with access to the conference proceedings don't forget to login to your AMPP Knowledge Hub account to access the paper for free. If you login and don't have access to the paper, you can purchase the individual paper or purchase the entire conference proceedings on your Knowledge Hub account.
Benzyldodecyldimethylammonium bromide (BDA-C12) is a corrosion inhibitor which forms a protective film layer on metal surfaces. It can also function as a biocide. This work assessed the performances of BDA-C12 in mitigating abiotic corrosion caused by acetic acid, and microbiologically influenced corrosion (MIC) caused by highly corrosive sulfate reducing bacterium (SRB) Desulfovibrio ferrophilus IS5 against X65 carbon steel. The initial efficacy screening was performed conveniently using a 10 mL disposable biofilm/MIC test kit with two solid-state electrodes for electrochemical measurements. In the corrosion prevention tests in which BDA-C12 was added into both the abiotic and biotic systems upon coupon immersions, 500 ppm (w/w) BDA-C12 was found to reduce the abiotic corrosion considerably, and it successfully prevented the SRB biofilm formation, reflected by the linear polarization resistance (LPR) and potentiodynamic polarization scans. The loose coupon weight loss tests in 125 mL anaerobic vials containing 50 mL enriched artificial seawater confirmed the 10 mL test kit data. In the injection tests, the 500 ppm BDA-C12 injections in the abiotic and biotic systems achieved 14% and 27% polarization resistance (Rp) increases (corrosion rate decreases) from LPR measurements, respectively. Sessile cell counts and biofilm images supported the MIC inhibition results.
