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Characteristics of Mercury Concentration in Vapor Phase from Compact Fluorescent Lamp
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  • Journal title : Korean Chemical Engineering Research
  • Volume 52, Issue 5,  2014, pp.652-656
  • Publisher : The Korean Institute of Chemical Engineers
  • DOI : 10.9713/kcer.2014.52.5.652
 Title & Authors
Characteristics of Mercury Concentration in Vapor Phase from Compact Fluorescent Lamp
Rhee, Seung-Whee;
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Mercury amount in vapor phase from 3 types of CFL(compact fluorescent lamp) are estimated by measuring mercury concentration in vapor phase. The mercury concentration in vapor phase from CFL is sharply decreased during initial time and then the change in the mercury concentration is slightly decreased up to 24 hours. The mercury concentration in vapor phase is almost constant after 42 hours, which can be called by stabilized concentration. It can be estimated that the stabilized concentration is caused by the evaporation of mercury in the residues of broken CFL and can be affected by temperature and pressure in crushing apparatus. The mercury concentration for CFL manufactures are in the order of A < B < C as the same results of the initial mercury concentration and the stabilized concentration in vapor phase. As increased air flow rate, the partial pressure of mercury is decreased and the amount of mercury is reduced. Initially, the mercury concentration in vapor phase emitted from CFLs is higher than the regulatory level of in the specific facilities regardless of air flow rate. Hence, it is absolutely necessary that mercury in vapor phase should be controlled at the point of crushing campact fluorescent lamp.
CFL;Mercury Concentration;Vapor Phase;Flow Rate;Characteristics;
 Cited by
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