SYNERGISTIC MANGANESE OXIDE AND COCONUT HUSK NANOPARTICLES HYBRID COATING FOR SUSTAINABLE PIPELINE CORROSION CONTROL IN ACIDIC ENVIRONMENT

Peter Aruoture Oghenekowho; Christopher Isicheli Ajuwa; Benjamin Ufuoma Oreko

doi:10.4314/njt.v44i3.5

Authors

P.A. Oghenekowho Federal University of Petroleum Resources Effurun
C. I. Ajuwa Federal University of Petroleum Resourses Effurun, Nigeria
B. U. Oreko Federal University of Petroleum Resourses Effurun, Nigeria

DOI:

https://doi.org/10.4314/njt.v44i3.5

Keywords:

Corrosion, Novel Hybrid coating, Epoxy resin, Nanoparticles, Petroleum pipelines, EIS, PDP

Abstract

In the oil and gas industry, corrosion is a major problem that can result in pipeline breakdowns and economic losses. This project aims to develop a novel hybrid corrosion protection coating for petroleum pipeline-grade steel using epoxy resin reinforced with manganese oxide and coconut husk nanoparticles (CHNP). Response Surface Methodology was used to develop and optimise the hybrid coating (RSM). Potentiodynamic polarisation (PDP) and Electrochemical Impedance Spectroscopy (EIS) techniques were used to assess its performance. The findings showed that the corrosion resistance of the developed hybrid coating was greatly enhanced by the addition of CHNP and MNO_2, and a maximum corrosion efficiency of 93% was attained at 4.45 weight percent CHNP and 2.03 weight percent MNO₂ in 0.5 mol.dm⁻³ H₂SO₄. The results obtained showed that the combination of CHNP and MnO₂ is suitable for formulating corrosion protection coating for carbon steels.

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