CaCO3-derived from eggshell waste for improving the corrosion resistance of zinc composite coating on mild steel for biodiesel storage tank

Unveiling the anti-corrosion properties of Zn-eggshell particle composite coatings on mild steel in seawater-simulated solution using starch as a modifier

“…The corroded product that forms may be ZnO, Zn(OH) 2 , CaO, CaCO 3 , and Na 2 O. Work by 25,28 has yielded similar observations. It was evident that the corrosion attack had caused a significant variation in the EDS spectrum between the samples under investigation.…”

“…First, by sealing up micro-pores and other imperfections in the zinc matrix, calcium carbonate can act as a physical barrier to lessen the entry of corrosive substances. 25 CaCO 3 can also engage in chemical reactions that enhance the coating's protective properties. 26 For example, when moisture and CO 2 are present, calcium carbonate may transform into calcium bicarbonate, as shown by eqn (1).CaCO 3 + CO 2 + H 2 O → Ca(HCO 3 ) 2 …”

Effect of Chemical Conversion Treatment with Oxalic Acid Solution in the Corrosion Resistance of Galvanized Steel in Soybean Biodiesel with Natural Additives

“…Based on the results obtained in the present work, it is possible that the conversion treatment in oxalic acid solution can improve the corrosion resistance of zinc-based coatings containing elements such as Ni and compounds such as CaCO 3 -ESP that increase the corrosion resistance of the zinc coating on biodiesel. It has been found 49 that coating consisting of Zn-10%CaCO 3 -ESP double layer, using CaCO 3 derived from eggshell waste (ESP), exhibits a corrosion resistance in biodiesel superior to that of Zn coating. Therefore, in a future work we plan to analyse how the conversion treatment in the oxalic acid solution affects the corrosion resistance of deposits such as Zn-Ni and Zn-10%CaCO 3 -ESP double layer.…”

Enhancing Corrosion Resistance in Biodiesel Distribution and Terminal Operations: A Comprehensive Materials Compatibility Review

“…Further research is needed to fully understand the potential of FRP as a solution for biodiesel corrosion. Atikpo et al (2022) proposed the use of a Codeposition method to create a novel mild steel coating using eggshell waste. The authors evaluated the microstructure, hardness values, viscosity, and density of the samples in a Jatropha curcas Eslami et al (2015) found that tap water conditions led to higher moisture absorption, while high-temperature immersion weakened the mechanical strength and bonding.…”