Characteristics of mercury emission from linear type of spent fluorescent lamp.
In order to recycle the linear type of SFL (spent fluorescent lamp), mercury from SFL should be controlled to prevent leaking into the environment. For mercury emission from SFL, mercury concentration is estimated in the parts of SFL such as glass tube, phosphor powder, and base cap using the end-cutting unit. It is also evaluated mercury emission in the effluent gas in the end-cutting unit with changing flow rate. From the results of mercury emission from SFLs, phosphor powder has greater than 80% of mercury amount in SFL and about 15% of mercury amount contained in glass tube. The initial mercury concentration in vapor phase is almost decreased linearly with increasing airflow rate from 0.7 L/min to 1.3 L/min. It is desirable that airflow rate should be high until the concentration of mercury vapor will be stable because the stabilized concentration becomes to be low and the stabilized time goes to be short as increased airflow rate. From KET and TCLP results, finally, phosphor powder should be managed as a hazardous waste but base-cap and glass are not classified as hazardous wastes.
Department of Environmental Engineering, Kyonggi University, Suwon, Republic of Korea. Electronic address: swrhee@kyonggi.ac.kr.
Seung-Whee
SW
Rhee
Division of Resource Recirculation Research, National Institute of Environmental Research, Incheon, Republic of Korea.
Hyo-Hyun
HH
Choi
Department of Environmental Engineering, Kyonggi University, Suwon, Republic of Korea.
Hun-Su
HS
Park
D005453:Fluorescence; D006256:Hazardous Waste / Q000032:analysis*; D006794:Household Articles; D008029:Lighting; D008628:Mercury / Q000032:analysis*; D059027:Recycling; D013054:Spectrophotometry, Atomic
D006256:Hazardous Waste; D008628:Mercury
Hazardous characteristic; Mercury; Phosphor powder; Spent fluorescent lamp