Modelling of a new form of nitrogen doped activated carbon for adsorption of various dyes and hexavalent chromium ions.

ABSTRACT: This study reports a new form of nitrogen-doped activated carbon (AC5-600) produced from a blend of sawdust (SD) and fish waste (FW) treated with urea and ZnCl₂ for the adsorption of toxic metals and dyes. The adsorbent was also explored in the treatment of acid brown 14 (AB14) and acid orange 7 (AO7) dye molecules and hexavalent chromium (Cr⁶⁺) ions. The pH controls the sorption of individual contaminants, with an observed superlative % of individual contaminants removed at pH 1.5. Removal at pH was credited to the electrostatic interaction (EI) between the anion dyes and Cr⁶⁺ species at this pH and the protonated sites accessible on the AC5-600 adsorbent surface. Based on the error values obtained from the non-linear modelling (NLM) of the kinetic and iso

SUBMITTER: El-Nemr MA 

PROVIDER: S-EPMC11785975 | biostudies-literature | 2025 Jan

REPOSITORIES: biostudies-literature