Removal of Heavy Metals from a Contaminated Green Mussel [Perna Viridis (Linneaus, 1758)] Using Acetic Acid as Chelating Agents

Dried green mussel [Perna viridis, (Linneaus, 1758)] was soaked in acetic acid solution at a concentration of 10%, 15%, 20%, and 25% for 0 min, 30 min, 60 min, and 90 min. The content of heavy metals such as Pb, Cr, and Cd after soaking were analyzed by Atomic Absorption Spectrometer (AAS). The results indicated that after soaking in acetic acid solution at a concentration of 25% for 90 min reducing heavy metal Pb from 2.879 μg · g–1 to 1.407 μg · g–1, Cr from 0.730 μg · g–1 to 0.362 μg · g–1, and Cd from 0.710 μg · g–1 to 0.441 μg · g–1. The increasing concentration of acetic acid solution and the longer soaking time, the levels of heavy metals (Pb, Cr, Cd) in green mussel will decreasing. Interestingly, acetic acid was able to chelate the studied heavy metals in green mussel.