Recycling of Broken Glasswares Into an Adsorbate to Remove Both Cationic and Anionic Dyes for Waste Water Treatment
Abstract
M. Sridevi, J. Prabha and S. Angayarkanny
Chemically modified broken laboratory glass wares were proved to act as an efficient adsorbent for both anionic and cationic dyes from waste water. The glassware wastes were chemically modified as silica gel for cationic dyes adsorption. The silica gel is again modified with amphiphile for anionic dye adsorption. Both silica gel and modified silica gel were characterized with Scanning Electron Microscopy, Energy Dispersive X-ray Analysis and Fourier Transform Infrared Spectroscopy. The adsorptions of the dyes were confirmed visually as well as using UV- visible spectroscopy. The adsorption capacities of the modified silica gel were quantified using model cationic and anionic dyes. The adsorption was found to be 97.84 mg/g for cationic and 196.14 mg/g for anionic dyes by the modified silica gel. The efficiency of the adsorption was quantified at various dosages, pH, initial concentrations and contact time. The mechanism of the adsorption is predicted by applying mathematical models. This study demonstrated an efficient way of recycling the non- biodegradable broken glassware waste for the waste water treatment by modifying as an efficient adsorbate for both anionic and cationic dyes. This study doubly contributes towards the environmental protection by recycling hazardous broken glass wares an adsorbate towards clean water.
