International Journal of Waste Resources

A study on the characteristics of toluene adsorption in activated biochar of waste wood synthesis by hydrothermal carbonization

15^th World Congress and Expo on Recycling

October 16-17, 2023 | Vancouver, Canada

Jin Man Chang and Jai-Young Lee

University of Seoul, South Korea

Scientific Tracks Abstracts: Int J Waste Resour

Abstract:

About 62% of the total emissions of volatile organic compounds in Korea are emitted from painting facilities. Automobile painting facilities emit few volatile organic compounds, but they are adjacent to residential areas and significantly impact the human body. The main component of volatile organic compounds in automobile painting facilities is toluene gas, which occupies a high concentration and specific gravity, which harms the human body. Therefore, this study examines the adsorption characteristics of air pollutants of activated biochar synthesized through the hydrothermal carbonization and activation process using waste wood. Activated biochar had synthesized by HTC and chemical activation with various conditions and selected the optimum condition. The study analyzed the surface area, pore volume, size, and distribution of activated biochar. The optimal condition for carbonization is 4 hours at 300°C, grain size is over 4.75mm, and the optimal condition for activating is 800°C using a KOH. The carbon contents have increased a maximum of two times to raw materials. The surface area of activated biochar is from 872.2 ~ 1387.7 m2/g. As for the activated biochar synthesized under optimal conditions, it took less than 5 minutes to remove Toluene below 50 ppm, which is the appropriate VOC emission standard, and it is similar to that of commercial activated carbon. Activated biochar manufactured using HTC is believed to be available in painting facilities.

Biography :

Jin Man Chang is studying for a Ph.D. program at the University of Seoul. Research on waste treatment and thermal treatment is being conducted.