Pyridine‐Rich Novolac‐Based Network as an Effective Adsorbent for Removing Azo Dyes

Abstract

The hazardous consequences of azo dye organics on the environment and human health motivate the development of new sorbent materials for their elimination from wastewater. The purpose of this work is to prepare pyridine‐rich novolac resin‐based network material 1 as effective adsorbent for the removal of azo dye pollutants, methyl orange (MO), orange‐II (OII) and orange‐G (OG) azo dyes from aqueous solution at a wide range of pH (acidic‐neutral‐basic conditions). Both electrostatic interaction and physical forces are suggested to be involved during adsorption of azo‐dyes onto tailored adsorbent. Besides, dye‐adsorbed 1 was effectively desorbed by dil H2SO4 and recycled, which is promising for its practical application in the treatment of dye contaminated water.