首页|Eco-friendly corrosion inhibitor from Pennisetum purpureum biomass and synergistic intensifiers for mild steel
Eco-friendly corrosion inhibitor from Pennisetum purpureum biomass and synergistic intensifiers for mild steel
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Extracts of elephant grass (Pennisetum purpureum) blended with some intensifier halides like ammonium chlo-ride (AMC) and potassium iodide (PTI) were investigated as corrosion inhibitor for mild steel. The corrosion pro-cess was monitored in 3.5%HCl by mass loss and electrochemical techniques at 30, 40, 50, 60 and 90 °C. Addition of AMC and PTI increased the inhibition efficiency with the highest inhibition efficiency obtained with PTI blend-ed extract. The blends behaved as mixed type inhibitors and were spontaneously adsorbed on mild steel surface in exothermic nature. Synergistic parameters of the intensifier ions revealed cooperative effect. Kinetic data treat-ment indicated increase in energy barrier by intensifier ions. The results demonstrate that elephant grass extract blended with halide ions can act as alternative ecofriendly inhibitor for mild steel at elevated temperatures.
AdsorptionCharge transfer resistanceCorrosion inhibitor formulationsElectrochemical techniquesElephant grass
Ekemini Ituen、Abosede James、Onyewuchi Akaranta、Shuangqin Sun
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Materials Physics and Chemistry Research Laboratory, Col ege of Science, China University of Petroleum, Qingdao 266000, China
Department of Pure and Industrial Chemistry, University of Port Harcourt, Nigeria
African Centre of Excel ence in 0ilfield Chemicals Research, Institute of Petroleum Studies, University of Port Harcourt, Nigeria
authors gladly acknowledge the financial support provided by World Bank Robert S. McNamara Fellowship Program 2015 to carry
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