Application of Multi-Walled Carbon Nanotubes in the Removal of Reactive Red 120 from Aqueous Solutions

Variations in their compositions. strong color is one of the main characteristics of textile effluentand, if not eliminated, it can cause serious problems to the environment. in the present study,multi-walled carbon nanotubes (mwcnts) were used as an adsorbent for the removal ofreactive red-120 (rr-120) textile dye from aqueous solutions.materials and methods: the influence of key parameters including ph (2-12), concentration ofdye(10 to 200 mg/l), contact time (30-270 min), adsorbent dosage (0.01-0.07 g/l) have beeninvestigated in order to find the optimum adsorption conditions (sample size =48).results: optimum ph for removing of rr-120 dye was found to be 5 and for this conditionmaximum adsorption capacity was obtained as 3453.4 mg/g. experimental results have shownthat by increasing the adsorbent dosage, the rate of dye removal was increased, but the amount ofadsorbed dyes per mass unit of mwcnts was declined. it was found that the data fitted tolangmuir better than bet and freundlich model.conclusion: results suggest the potential of using the mwcnts as an adsorbent for effectivetreatment of dye-contaminated wastewaters.