ISSN 2305-6894

Rosa damascena (Damask Rose) as corrosion inhibitor for mild steel in simulated oil well water medium

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1 PG and Research Department of Chemistry, Thanthai Periyar Government Arts and Science College (Autonomous), Tiruchirappalli-620023, Affiliated to Bharathidasan University, Tiruchirappalli-620024, Tamilnadu, India
2 PG and Research Department of Chemistry, National College (Autonomous), Tiruchirappalli-620001, Affiliated to Bharathidasan University, Tiruchirappalli-620024, Tamil Nadu, India
3 PG Department of Chemistry, Corrosion Research Centre, St. Antony’s College of Arts and Sciences for Women, Dindigul-624005, Affiliated to Mother Teresa Women’s University, Kodaikanal, Tamil Nadu, India
4 Adjunct Professor, Centre for Nanoscience and Technology, Pondicherry University, Puducherry, India

Abstract: The mild steel pipeline system in the oil and gas industry is the heart for transportation of crude and refined petroleum. However, continuous exposure of the pipeline surfaces to impurities and sources of corrosion such as sulfur and chromate is totally unavoidable. Vast employment of commercial corrosion inhibitors to minimize the corrosion is being restrained due to toxicity towards the environment. The emergence of “green” chemistry has led to the use of plant extracts which have proven to be good corrosion inhibitors. This paper aims to provide insight into carrying out further investigation under this research theme for accurate inhibition efficiency measurement. The impact of an aqueous extract of Rosa damascena flower (RDF) in controlling the corrosion of mild steel in simulated oil well water (SOWW) medium has been demonstrated by weight loss method and electrochemical measurements. The surface morphology is examined with the help of scanning electron microscopy (SEM) and the surface roughness analysis is done by atomic force microscopy (AFM). Weight loss method reveals that 10% v/v of the extract offers a maximum corrosion inhibition efficiency of 96%. The potentiodynamic polarization method was used to study the mechanistic aspects of corrosion inhibition. Corrosion potential values are shifted. Linear polarization resistance value increases and corrosion current value decreases with increase in concentration of RDF. The potentiodynamic polarization study reveals that RDF acts as mixed type inhibitor with primarily anodic effectiveness. SEM and AFM documented the development of shielding coating on the mild steel surface. The results obtained show that Rosa damascena flower extract could serve as an excellent green corrosion inhibitor.

Keywords: Rosa damascena flower, corrosion inhibitor, mild steel, simulated oil well water

Int. J. Corros. Scale Inhib., , 11, no. 2, 851-861
doi: 10.17675/2305-6894-2022-11-2-26

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Back to this issue content: 2022, Vol. 11, Issue 2 (pp. 465-861)