A Review On – Material Selection For Corrosion Studies

Abstract

Corrosion is the largest single cause of plant and equipment breakdown in the process industries. For most applications it is possible to select materials of construction that are completely resistant to attack by the process fluids, but the cost of such an approach is often prohibitive. In practice it is usual to select materials that corrode slowly at a known rate and to make an allowance for this in specifying the material thickness. However, a significant proportion of corrosion failures occur due to some form of localised corrosion, which results in failure in a much shorter time than would be expected from uniform wastage. Additionally, it is important to take into account that external atmospheric corrosion leads to many instances of loss of containment and tends to be a greater problem than internal corrosion. All these aspects of corrosive behaviour need to be addressed both at plant design time and during the life of the plant.Phenolic compounds are categorised as hazardous pollutants that contaminant groundwater. The principal objective of this article was to organising effective adsorbents for the removal of phenol and it’s derivative. In this review article, a compelling amount of published paper were consulted in order to provide information about various agricultural waste adsorbents. Agricultural waste adsorbents have been modified by thermal and chemical process to enhance the surface area properties. This article has suggested that increasing the adsorbent dosage increases the adsorption capacity. The pH, adsorption capacity, reduction efficiency and temperature have been investigated for various adsorbents in this article. This study proved that agricultural waste adsorbents are effective in removal of phenol from waste water.