Characterization and adsorption studies of activated carbon and polymer coated sawdust for the removal of various pollutants from industrial wastewater

摘要

Activated Carbon of high adsorption capacities were prepared from Casuarina by various physical and chemical processes followed by activation at 800ºC. The physico-chemical characteristics such as moisture content, volatile content, Specific gravity, Porosity, bulk density, pH, conductivity, Methylene blue number, iodine number were also investigated in order to understand the adsorptive capacity of activated carbon prepared from the agricultural waste. The present study analyses the feasibility of removing colour and reducing various water quality parameters like BOD, COD, alkalinity, etc., from the effluent samples collected from different industries using activated carbon (CAC) and polypyrrole coated sawdust (PPy/SD) prepared from Casuarina as adsorbents. Several other parameters such as chlorides, sulphates, TDS, pH and hardness present in the effluent sample before and after adsorption were also measured and were found to be in par with the permissible limit.