Design and solvent free synthesis of novel phenazone based molecule for water disinfection and rapid removal of the anionic direct fast blue B2RL dye

Abstract

Innovative materials that can perform several functions are highly desired in managing highly-contaminated water. A novel phenazone-based molecule (MPHC) was prepared using an eco-friendly method where 4-antipyrinecarboxaldehyde was reacted with methyl hydrazinecarbodithioate under solvent free condition. The chemical structure of MPHC was inferred from correct spectral data (FT-IR, 1H NMR, 13C NMR). Its structure was affirmed by scanning electron microscopy (SEM) and its microbiological and adsorption performance were inclusively tested. The microbiological investigations affirmed that MPHC is biocompatible, environmentally benign, has robust antimicrobial potential against all tested microbes, and could entirely eliminate the 6-log count of waterborne pathogens. The adsorption investigations showed that 1.00 g/L of MPHC can completely remove 10 mg/L of direct fast blue B2RL dye readjusted at pH 4 in 10 min. The adsorption was a physical and favorable process which follows the pseudo-first order kinetic and Langmuir isothermal models. The Langmuir adsorption capacity (56 mg/g) was high relative to several other reported adsorbents. Overall, the reported newly synthesized molecule can be easily prepared and is efficient in disinfection and removal of anionic dyes from contaminated water.