REMOVAL OF PCDDs/PCDFs FROM SOLUTION BY USING ACTIVATED CARBONS - ADSORPTION KINETICS SURVEY

摘要

Introduction Activated carbon is widely applied to eliminate pollutants in drinking water, waste water, air, exhaust fume, pharmaceutical products, drinks, foodstuff. Many kinds of activated carbons have been studied by international authors to eliminate PCDDs/PCDFs and dioxin-like PCBs from fish oils, vegetable oils, flue gases, emission of incinerators, metallurgical furnace. In Vietnam, at the hotspot areas, where US army used to store herbicides during the Ranch Hand operation which have dioxin-contaminated level many times higher than acceptable maximum level10-13. From that areas the spreading of pollutants to surroundings mainly follows the water flow. Some researches has been carried out to reduce spreading of dioxin using activated carbons as adsorption material.