Modification of Punica Granatum Linne Husk Extract as Eco-Friendly Corrosion Inhibitors in Oil Fields

Abstract

The pomegranate husk extract is modified by formaldehyde and diethylamine, the products have been investigated as corrosion inhibitors for Q235A steel used in oil fields. The inhibition efficiency of products have been measured by weight loss method with the concentration range from 10 mg/L to 1,000 mg/L in 1wt% HCl at different temperture. The inhibition efficiency of the modification product shows good inhibition efficiency after modified by formaldehyde and diethylamine, which is up to 89.31% at 60°C. The inhibitory effect of modification products is in accord with Langmuir adsorption equation.

Modification of <i>Ligustrum vulgare</i> Leaves Extract as Eco-Friendly Corrosion Inhibitors in Oil Fields

“…With the increase of the concentration, the corrosion rate decreases and the corrosion inhibition rate increases. Increase in inhibition efficiencies with the concentration shows that the inhibition actions may due to its adsorption on the steel surface [7,8].When the concentration increases to 1000mg/L, the corrosion rate decreases slightly. At the same time, the corrosion inhibition effect of the modified product is better than that of the water extract of ligustrum vulgare leaves, and the corrosion inhibition effect of PM1 is slightly weaker than that of PM2.…”

Green Methods for Corrosion Control

“…Many additives have been used to improve the inhibition efficiency of plant extracts. For example Zn 2+ , methylene dichloride, n-butanolic extract [46][47][48][49][50][51], KI [22,52,53], KCl, KBr [54][55][56][57][58], formaldehyde, diethylamine [59], ethyl acetate [60], and dimethyl sulfoxide [61].…”