Abstract:
Cockle shell has been usually used as craft materials, while the rest was discarded as
waste. This shell contains 97% of CaCO3, which recognized as an adsorbent in the ash
form. This ash was produced via calcination step at 800ºC for variation time of 4, 5, and
6 hours. Each of the ash obtained were tested for the ability adsorption of through the
Cu2+, Sn2+, CN- and NO3
- ions with a concentration of 50 ppm and contacting for
24 hours. The ash blood cockle shells was potential as an adsorbent cations such as Cu2+
ions (98.92%) and Sn2+ ions (98.11%) that were analyzed using Atomic Absorption
Spectrophotometer (AAS), and anions such as CN- ions (57.54%) and NO3
- ions
(64.41%) that were analyzed using a UV-Vis spectrophotometer.