Monitoring of PM2.5 in coal ash samples heavy metals stabilization by carbonation method

摘要

Coal-fired power plants produce electricity for the nation’s power grid,but they also produce more hazardous air emissions than any other industrial pollution sources.The quantity is staggering.Over 386,000 tons of 84 separate hazardous air pollutants spew from over 400 plants in 46 states.In South Korea also,annual coal ash generation from coal-fired power plants were about 6 million tons in 2015.Pollutants containing particulate matter 10,2.5(PM10,PM2.5),heavy metals and dioxins from coal-fired power plant.Their emissions threaten the health of people who live near these plants,as well as those who live hundreds of miles away.These pollutants that have long-term impacts on the environment because they accumulate in soil,water and animals.The present study is to investigate the physical and chemical characteristics of coal-fired power plant fly ash and bottom ash contains particulate matter,whose particulate sizes are lower than PM10 and PM2.5 and heavy metals.There are wide commercial technologies were available for monitoring the PM 2.5 and ultra-fine particles,among those carbonation technology is a good tool for stabilizing the alkaline waste materials.We collected the coal ash samples from different coal power plants and the chemical composition of coal fly ash was characterized by XRF.In the present laboratory research approach reveals that potential application of carbonation technology for particulate matter PM_(10),PM_(2.5)and stabilization of heavy metals.The significance of this emerging carbonation technology was improving the chemical and physical properties of fly ash and bottom ash samples can facilitate wide re use in construction applications.