Corrosion inhibition of Pichia sp. biofilm against mild steel corrosion in 1 M H2SO4

Investigation of Corrosion Inhibition of Mild Steel in 0.5 M H2SO4 with Lachancea fermentati Inhibitor Extracted from Rotten Grapefruits (Vitis vinifera): Adsorption, Thermodynamic, Electrochemical, and Quantum Chemical Studies

“…b showed the UV–vis spectrum of 9 × 10 6 cfu/mL of Lachancea fermentati isolate with MS specimen in 0.5 M H 2 SO 4 for 2 h. The spectrum exhibited electronic transitions of the inhibitor (π–π* and n−π*) and its transition peaks at 249 and 306 nm, respectively. This easily leads to the corresponding peak of transitions observed with polysaccharides, thereby indicating carboxyl functional groups exist in the Lachancea fermentati isolate . As per the UV–vis absorption spectrum of the Lachancea fermentati isolate with MS, there was an increase in absorbance and a shift in the wavelength compared with the Lachancea fermentati isolate.…”

“…So, it is clear that with the presence of Lachancea fermentati isolate, the potential shifts in the anodic direction attain rapid stability with time. This factor can well be observed by protecting film formation over the MS surface …”

“…Many bacteria, such as Bacillus and Pseudomonas strains, have been used for the corrosion inhibition of metals. Pseudomonas S9 and Serratia marcescens EF190 cultures were used to inhibit the corrosion of the SIS 1146 steel. − The mild steel corrosion inhibition was studied, and the result revealed that the 2 to 10-fold excess of mild steel corrosion inhibition was achieved because of Pseudomonas fragi and Escherichia coli DH5a (pKMY319) biofilms. The aerobic biofilm formation has proved its corrosion inhibition toward metals compared with sterile controlled cultures.…”

Rice bran phytosterol nanoparticles: A promising approach to enhance yogurt quality and nutrition

“…The use of H 2 SO 4 as a catalyst, on the other hand, can lead to the corrosion of stainless steel production equipment and generate significant amounts of product recovery and cleaning wastewater, making it unsuitable for industrial production. Moreover, it can cause environmental pollution and is not conducive to environmental protection (Gupta & Pal Singh, 2023; Tamilselvi et al, 2022). Therefore, Fe 2 (SO 4 ) 3 is suitable for catalyzing the methyl esterification reaction of rice bran oil deodorized distillates.…”

“…Phytosterols are triterpenoids with a cyclic structure composed of cyclopentane polyhydrophenanthrene (Mohammadi et al, 2020). They are known to play an important role in lowering cholesterol (Feng, Belwal, et al, 2020) and having anti-inflammatory effects (Valerio et al, 2011).…”