In this study,utilization of shrimp-shell waste as potential biopolymer to increaseits selling value that finally improves Indonesian fisherman welfare.Chitosan, a biopolymer prepared through the deacetylation of chitin,found in the exoskeleton of crustaceans (e.g. shrimp) is the mostabundant amino polysaccharide in nature. Its chelating properties areattributed to the amino and hydroxyl groups that can act as chelationsites for different targets such as metals. We have synthesized andtested the ability of chitosan as a chelating resin for reduction ofheavy metals concentration in aquatic samples. Scanning electronmicroscopy (SEM) was used to characterize the morphology of thechitosan surface. Fourier transform infrared (FTIR) characterizationshowed wavenumber 3447,64 cm-1 and 1654,98 cm-1 shows a ribbonfor -OH and -NH groups on chitosan. Optimum adsorptionconditions were studied for Cu (II) and Zn (II). The interest metalswere analyzed using spectrophotometry method. We found thatchitosan adsorption behaviour followed Langmuir isotherm.