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<strong>Corrosion inhibition, adsorption behaviour, and thermodynamic studies of red dragon fruit (Selenicereus costaricensis) waste peel extracts on mild steel in acidic environment</strong>

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Title Statement <strong>Corrosion inhibition, adsorption behaviour, and thermodynamic studies of red dragon fruit (Selenicereus costaricensis) waste peel extracts on mild steel in acidic environment</strong>
 
Added Entry - Uncontrolled Name Macadangdang, Romulo Jr Rumias; Far Eastern University
 
Uncontrolled Index Term Corrosion; Corrosion inhibition; Adsorption; Thermodynamic studies; weight loss method; Environment-benign coatings
 
Summary, etc. <p><span>Metal corrosion is brought about by the oxidation of atoms on the surface resulting in irreversible damage to structures at staggering costs. Hence, the search for efficient and cost-effective corrosion inhibitors is relevant. In this study, the ethanolic extract of Red Dragon Fruit (Selenicereus costaricensis) waste peels (RDF) has been tested for its anti-corrosion property using the weight loss method at different temperatures (303-343 K). The calculated inhibition efficiency of 2% RDF is 97%. Thermodynamic studies reveal that increasing inhibitor concentration raises the activation parameters of mild steel in acidic media such as activation energy (Ea) and changes in enthalpy (Ho) and entropy (So). Moreover, increased immersion time, inhibitor concentration, and temperature led to increased inhibition efficiency. The spontaneous process (Go ads = -23.47 kJ/mol) of adsorption of RDF on mild steel surfaces obeys the Langmuir isotherm model. Lastly, optical microscopy of the inhibited and uninhibited systems confirms the potential of the RDF against pitting corrosion.</span></p>
 
Publication, Distribution, Etc. Indian Journal of Chemical Technology (IJCT)
2022-07-12 11:59:22
 
Electronic Location and Access application/pdf
http://op.niscair.res.in/index.php/IJCT/article/view/51586
 
Data Source Entry Indian Journal of Chemical Technology (IJCT); ##issue.vol## 29, ##issue.no## 2 (2022): Indian Journal of Chemical Technology
 
Language Note en