title: Mercury recovery from mercury-containing wastes using a vacuum thermal desorption system.
abstract: Mercury (Hg)-containing waste from various industrial facilities is commonly treated by incineration or stabilization/solidification and retained in a landfill at a managed site. However, when highly concentrated Hg waste is treated using these methods, Hg is released into the atmosphere and soil environment. To eliminate these risks, Hg recovery technology using thermal treatment has been developed and commercialized to recover Hg from Hg-containing waste for safe disposal. Therefore, we developed Hg recovery equipment to treat Hg-containing waste under a vacuum of 6.67kPa (abs) at 400°C and recover the Hg. In addition, the dust generated from the waste was separated by controlling the temperature of the dust filtration unit to 230°C. Additionally, water and Hg vapors were condensed in a condensation unit. The Hg removal rate after waste treatment was 96.75%, and the Hg recovery rate as elemental Hg was 75.23%.
authors.affiliation: Department of Chemical and Biomolecular Engineering, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul 03722, Republic of Korea.
authors.forename: Woo Rim
authors.initials: WR
authors.lastname: Lee
authors.affiliation: Department of Chemical and Biomolecular Engineering, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul 03722, Republic of Korea.
authors.forename: Yujin
authors.initials: Y
authors.lastname: Eom
authors.affiliation: Department of Chemical and Biomolecular Engineering, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul 03722, Republic of Korea. Electronic address: teddy.lee@yonsei.ac.kr.
authors.forename: Tai Gyu
authors.initials: TG
authors.lastname: Lee
mesh_terms: D004391:Dust; D008628:Mercury / Q000302:isolation & purification*; D059027:Recycling / Q000379:methods; D013672:Technology / Q000379:methods*; D018505:Waste Management / Q000379:methods*
chemical_list: D004391:Dust; D008628:Mercury
keywords: Mercury; Mercury recovery; Mercury waste; Minamata; Thermal desorption