Expired Dulcolax Drug as Corrosion Inhibitor for Low Carbon Steel in Acidic Environment

Dulcolax is a common laxative medicine, and Dulcolax is one of the most well-known. Bisacodyl medicines increase peristaltic contractions by exerting a parasympathetic effect on the mucosal sensory neurons. It was utilized for pre-and postoperative constipation, as well as situations that required defection facilitation. Dulcolax is frequently used in our homes and maybe left unattended after its expiration date, posing a risk to children and the environment. The expired or unused Dulcolax medicinal medicine was used as a nontoxic green corrosion inhibitor of mild steel used in the production of petroleum pipelines in a 1.0 M hydrochloric acid corrosive environment in the current study. Estimates were made using chemical, analytical, and electrochemical methods. The impact of drug concentration and reaction temperature on the outcome was investigated. Corrosion inhibition rose as concentration increased and reduced as temperature increased. The inhibition could be caused to drug components adsorbing and adhering to the steel surface. The Langmuir isotherm model was found to govern adsorption. The expired medications are mixed-type inhibitors, mostly cathodic, according to potentiodynamic polarization data. The expired Dulcolax medicine boosts polarization resistance and inhibition performance by adsorbing on the metal/electrolyte interface, according to an EIS investigation. In the absence and presence of expired pharmacological inhibitors, AAS was utilized as an analytical approach to determine the ferric ions concentration in the corrosive environment. All of the evidence points to the plausibility of utilizing and applying Expired Dulcolax as a non-toxic green inhibitor for steel.