Removal of Cadmium, Copper and Nickel in Thynnichthys thynnoides using Chelation Technique

Thynnichthys thynnoides is a freshwater fish that widely consumed by Malaysian society. Due to increasing in industrial activities, the presence of heavy metals in T. thynnoides has become a risk that can affect human health and environment. This research was studied on efficiency of chelation technique to remove heavy metals cadmium (Cd), copper (Cu) and nickel (Ni) from T. thynnoides. The treatment for chelation technique was observed under optimized conditions of trisodium citrate concentration of 400 ppm for five hours treatment at temperature of 29.50±0.50°C. Initially the concentration of Cd, Cu and Ni in T. thynnoides were 0.74 μg/g, 3.18 μg/g and 2.95 μg/g and successfully removed to 35.80%, 65.22% and 61.17% respectively.