A review on the role of eco-friendly inhibitors for mitigation of microbial influenced corrosion of steel and its impacts
Shiv Kumar Manu, R. Manivannan
Abstract
Abstract Microbially induced corrosion (MIC) is a localized corrosion caused due to the presence of micro-organism. Such micro-organisms found in oil wells are responsible for localized changes in the aqueous atmosphere (e.g., modify the composition of electrolytes, materials, pH and oxygen level). Conventionally,inorganic corrosion inhibitors were used to deter the microbial corrosion. However, ecological toxicity of inorganic corrosion inhibitors has sparked the hunt for eco-friendly inhibitors because they are biologically degradable, absence of toxic elements. Plant goods are affordable, readily available and can be recycled, as well as being environmentally friendly and socially appropriate. There is an intense initiative underway to use corrosion inhibitors of plant origin for metals that are susceptible to different environmental conditions. Both efforts were inspired by a need to replace the chemical additives used in aqueous solutions to reduce the deterioration of metals and various alloys. Plants constitute a type of fascinating compound source currently being investigated for use in the safety of metal corrosion in most structures and as a potential substitute for toxic synthetic inhibitors. Research results on the use of eco-friendly phytochemicals as inhibitors of microbially influenced corrosion are summarized in this review article. A general introduction to the subject of inhibitor for biocorrosion mitigation is addressed accompanied by comprehensive literature review on the use of natural inhibitors in aerobic or anaerobic condition of management for corrosion of steel metals and various alloys in biotic corrosive media.