Evaluate the performance of Carbon Nanotubes in the removal of Tartrazine from aqueous solutions؛ isotherms and kinetics studies

In recent years, with the production and use of increasingly synthesized colors that have a more complex structure than the natural colors, and are much more stable in chemical terms, more attention is paid to their environmental pollution[1]. The purpose of this study, removal of Tartrazine dyes from aqueous solutions dyes by carbon nanotube . The batch experiment was conducted to evaluate the effects of independent variables such as pH, dye concentration, dose of sorbent and contact time. The optimum conditions for basic Tartrazine dye removal were pH= 8, dye concentration= 23.75, absorbent dose= 0.016g and contact time= 26.25 min. Check isotherm and kinetic models showed that the experimental data with the Langmuir adsorption process Tartrazine (R2=0.885) and pseudo-second (R2=0.9996) are correlated.