Impact of corrosion inhibitors on the environment
Modelling, Measurement and Control C
Department of Chemical/Petrochemical Engineering, Rivers State University of Science and Technology, Nkpolu, P.M.B.5080, Port Harcourt, Nigeria
This paper entailed the analysis of three commercial corrosion inhibitors to know the concentration of heavy metals in them and the attendant health effect of these heavy metals on the environment. The effect on the environment was investigated by polluting some soil samples with the corrosion inhibitors and then analyzing these soil samples, for 1 day and 2 weeks. Results showed that the corrosion inhibitors contain heavy metals whose concentration exceeds the FEPA limits. These heavy metals are injurious to human health, toxic to plants and animals. They also have adveise on the ecology of the receiving environment and on surface and ground water quality. Comparative effect of environmental pollution of these corrosion inhibitors was tested using t-test techniques (t-test for correlated non independent samples) to determine the significance of the difference between the concentration of these samples. The comprehensive and feasible data generated from the experimental investigation shows the significant effect of these samples. Numerical computation methods were employed to determine the variation on the concentration of the sample from 1 day to 2 weeks. The t-test (tcal(o)=0.851, tcal (5) = 0.964, tcal(10)= 1.015, and tcal(15) = 0.981). Finally, this shows that the degree of pollution of corrosion inhibitors to the environment increase daily and therefore poses a great potential impact on the environment.
Atmospherics; Concentration (process); Corrosion; Corrosion prevention; Corrosion resistance; Corrosion resistant alloys; Groundwater; Health; Heavy metals; Metals; Soil surveys; Soils; Testing; Water quality; Commercial corrosion; Environment; Environmental pollutions; Experimental investigations; Ground water quality; Human health; Impact; Numerical computations; Soil samples; T-test comparative effect; Test techniques; Corrosion inhibitors