They found that the ethyl sulphate anion was found to have better inhibitory properties of corrosion. 28 looked into the impact of organic anions on ionic liquids as inhibitors for steel corrosion in sulfuric acid solution. The inhibition efficiency in this study ranged from 55 to 80 percent. The inhibition mechanism of three quaternary-ammonium-derived ionic liquids was clearly discussed by Olivares-Xometl et al. They show that the imidazolium inhibitors are effective mixed-type corrosion inhibitors, with higher inhibition efficiencies as concentration and alkyl chain length increase. produced ureido substituted imidazolium bromides and investigated their anti-corrosion effectiveness on steel in HCl solution 26. They also have very low toxicity and low cost 25. Most of the ILs contain organic cation and inorganic anions 24. ILs have recently been successfully used in different environments as inhibitors of corrosion 21, 22, 23. However, these organic inhibitors are hazardous materials 17.Īlternatively, toxic corrosion inhibitors are replaced with environmentally benign materials such as ionic liquids (ILs) 18, 19, 20.
Organic inhibitors, such as azoles, Schiff bases and amino acids are widely used to protect CuNi alloy from corrosion 14, 15, 16. This condition causes significant corrosion issues in desalination plant units and cooling systems 12, 13. The source of the presence of sulfide ions in the seawater comes from industrial waste and/or bacteriological processes (Sulfate reducing bacteria SRB) 11. Where the sulfide ions convert the strong Cu 2O passive film to a tenuous black layer 10. However, this passive film can be eliminated by sulfide containing seawater 9. The corrosion resistance of CuNi (90:10) is very high due to the formation Cu 2O passive film on the alloy surface 7, 8. The CuNi (90:10) alloy is the best alloy for constructing condensers and heat exchangers in desalination plants 5, 6. During the desalination processes, the saline water pass though various tubes and units contain different metal and alloys 4.
The main task of desalination plants is to remove salts from marine water to produce drinking water 3.
Desalination from sea water is one of our time's main challenges 1, 2.
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