Table 4 Green corrosion inhibitors for preventing corrosion in sulfuric acid solution sorted based on the lowest corrosion rate obtained from polarisation parameters.
From: A review of plant extracts as green corrosion inhibitors for CO2 corrosion of carbon steel
Plant extract | Steel specimen | Inhibitor concentration (at max. IE%) | Testing temperature (°C) | Uninhibited corrosion rate (mm y−1) | Inhibited corrosion rate (mm y−1) | Testing solution |
|---|---|---|---|---|---|---|
Loquat leaf | MS | 100 v/v% (1,000,000 ppm) | 30 | 6.716 | 0.244 | 0.5 M H2SO4 |
Aster koraiensis leaf | MS | 2000 ppm | 30 | 7.739 | 1.220 | 1.0 M H2SO4 |
