SYNTHESE D’UNE HYDROXYAPATHITE A PARTIR DE TEST Et D'EPINE D’OURSIN (Paracentrotus lividus) (Lamarck 1816)

Abstract

In the present work, we are study the adsorption capacity of test and the spines of sea urchin (Paracentrotus lividus), were chemically midified. Experimental results showed that the activated sea urchin proved very effective in wastewater treatment. Adsorption of the Yellow of Supranol (4GL) by the adsorbent has been studied as a function of contact time, dose and pH. The optimum conditions for maximum removal of Yellow of Supranol are pH 2, an adsorbent dose of 4,8,12 and 16 g / L and a contact time of 2h and 1h for tests, the spines treaty not calcined and tests ,the spines treaty and calcined respectively. The BET and Freundlich model applied to the results of experiments in process (Batch) have yielded a maximum adsorption capacity of the marine biomass by 1984mg/L,1951mg/L,1962mg/L for tests, the spines treaty not calcined and tests , the spines treaty calcined respectively. These new adsorbents can be used successfully in the depollution and discoloration waste water textiled industries.