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Waste control is a big challenge in industries. The aim of this study is to control degradation of farm structure using rice husk as corrosion inhibitor in pig dung, poultry dung and urea solution environment. The rice straw was subjected to phytochemical analysis. The four variables: rice straw, Pig dung, urea and poultry dung solutions were used to determine the best approach to reduce the corrosion rate of galvanized steel used for farm structures. Time variation used was 3–12 days. The result from the phytochemical analysis showed that rice husk has constituents of a good inhibitor. The result from the variables’ mix in S1: A: 40 cm 3 ; B: 40 cm 3 ; C: 10 cm 3  and D: 10 cm 3  has the highest inhibition efficiency of 88.59%. The SEM result from the best combination showed that passive film was formed which was attributed to the adsorption via rice straw extract. The rice straw used in this study was an effective inhibitor. It is an agricultural waste that was converted into a viable process which is of economic value.

Effect of corrosion on surface degradation of galvanized steel in poultry dung, pig dung and urea solutions using rice straw as an inhibitor