Valorization of carbon nanotubes material obtained from polyethylene waste as adsorbent for dyes from wastewater

Abstract

The objective of this investigation was to determine the efficiency of carbonaceous material, consisting of MWCNTs and amorphous carbon obtained by waste polyethylene pyrolysis, as an adsorbent for reactive textile dyes. In this work, the preliminary results of adsorption process of Bezaktiv Blau V-3R reactive dye from a solution with an initial 30 mg/l concentration using low dosage of adsorbent are presented. The results show that this material has promising potential as a sorbent, and its adsorption capacity (140 mg/g) for a reactive (anionic) dye is similar to some commercial MWCNT and functionalized MWCNT-based adsorbents.

Keywords

• adsorption
• anionic dyes
• carbon nanotubes
• amorphous carbon