Cresol Red Dye Removal Using Recycled Waste Tire Rubber

Dyes represent one of the persistent pollutants, which are difficult to remove from wastewater by the conventional treatment methods. Low cost adsorbents prepared from tire rubber waste were used to remove cresol red dye from liquid solution. In order to save energy no agitation or activation were made on the adsorption process. This will naturally slow down the process, but time was compared to cost. The adsorbent weight, particle diameter and duration time were explored to measure the effectiveness of these parameters on adsorption rate. The best removal reached more than 81% at adsorbent weight 12 g, particle diameter 2 mm, and duration of 21days. Experimental data were correlated well by the adsorption isotherm of Langmuir with R2value of 0.8799. It is concluded that cresol red dye is physically adsorbed into the tire rubber waste.