In the present study, the adsorption carried out to test the suitability of Chondruscrispus powder as an adsorbent for the removal of chromium ions from aqueous solution. The equilibrium studies are systematically carried out in a batch process, covering various process parameters that include contact time, adsorbent size and dosage, initial chromium ion concentration and pH of the aqueous solution. It is observed that adsorption is maximum at pH is 3. From the Langmuir adsorption isotherm, formation of unimolecular layer of adsorbate on adsorbent is verified. Freundlich isotherm also verified, Freundlich plot linearity confirms unimolecular adsorption. Lagergren plot of time in minutes versus t/q gives a straight line and it is confirmed that the kinetics follows the pseudo second order.