Membrane adsorbent as novel adsorbent for removing textile dyes

چکیده مقاله

In this study, the adsorptivity of Acid Orange 7 as a model textile dye was studied using a novel adsorbent. In this case, it was made a good use of waste fibers of mechanized carpets that are wasted in most of carpet industries. This adsorbent was prepared with phase separation technique and was followed by amidoximation reaction. This novel adsorbent resembled membrane very much that had high porosity and surface area. From now, we called them membrane adsorbent. The main reason for adsorption process was to form hydrogen bindings between sulfonate in Acid Orange 7 and amine functional groups. To improve conversion and to optimize the performance of this membrane adsorbent, Taguchi experimental design was also performed. The results showed that the optimum conditions for removing Acid Orange 7 are 18% wt. polymeric solution, 1 M hydroxylamine hydrochloride aqueous solution, 70°C reaction temperature, 3.5 h reaction time and pH=7. In this situation, the removal of this textile dye was 98%.