Abstract:
Today, fish fanning activities are actively in the running as there is an increase in
protein and to reduce reliance on the fishes obtained from the sea. However, this
activity is costly especially in term of operating costs. At the same time, the
equipments are easily exposed to corrosion phenomenon when reacting with water.
Thereby, this study was important to see the rate of corrosion that will occur on these
equipments to help breeders to cut the spending on maintenance. In this experiment,
mild steel was tested using samples of water obtained from the fish farm of Universiti
Malaysia Terengganu. In addition, sea cucumber solution was also used in the
experiment aimed to test whether it can be used as a inhibition to prevent corrosion, in
which in the sea cucumber there exists two antioxidants which are dimutase
superoxide (SOD) and catalase (CAT) that can be used to reduce the production of
reactive oxygen species (ROS). The concentrations used in this research are O ppm,
300 ppm, 600 ppm, and 900 ppm. The experiments were run for 28 days. Results of
samples were taken starting from the first day and up to day seven. The weights of the
samples were taken. On day 28, the last samples were taken to measure its final
weight. There are several methods that has been used to measure the rate of corrosion
from the data collection, the loss weight method,polarization scan and electrochemical
impedance spectroscopy. In order to obtain more accurate data. twelve samples were
taken on each day. The corrosion rate and inhibition efficiency were calculated in
order to find the best solution to be inhibitor.
