The Inhibitory Potential Of Justicia Carnea Bacteria Influence Corrosion Of Mild Steel In Anaerobic Medium

ABSTRACT

The inhibition of microbial influenced  corrosion oil pipelines was studied using Gravimetric,

Absorbance and scanning Electron v1icroscope (SEM) techniques. The inhibitory behavior of

Justicia Carnea leaves cxtiact an anaerobic growth of sulphate reducing bacteria (SRB) and

errosion of oil pipeline in d uen ed by the SRB are evident in the absorbance comparison results

I' anaco hj c S RI Inc iibalLd ni cl Ia Without the plant extract and the ones containing the plant

contract. [he cifUcts ol Ji'fciu cui'iiea extract on the corrosion of mild steel in aqueous and

cihanohc nieda \Va5 iuvcstiCd ed by gra\ imetric methods. The result of the weight loss in

aqueous eNtract rances rum l 4.00-5.00( mg) and in ethanolic extract ranges from 14.00-

OO( me I he i iihihitory [i'opc :tv of Jir1iciu curncce leave extract is discussed on the basis of

adsorption of tahlc complex ii the stecl surface. Theoretical fittings of different adsorption

isotherm. includinc El .jrrv-lluc sins. femkin. Langmuir and Freundlich, were tested to ascertain

the nature of adsorption.