Journal of Environmental Treatment Techniques  
2020, Volume 8, Issue 2, Pages: 762-765  
J. Environ. Treat. Tech.  
ISSN: 2309-1185  
Journal web link: http://www.jett.dormaj.com  
Investigate of Mercury Contents in Different Spent  
Fluorescent Lamps in Iran  
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Hosein Alidadi , Rahim Aali , Fatemeh Kariminejad , Mohammad Aali Dehchenari , Hadi  
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Farsiani , Reza Abdollahzadeh , Monavvar Afzal-Aghaee , Aliakbar Dehghan , Samaneh  
Gohari9  
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Professor, Department of Environmental Health Engineering, Social Determinants of Health Research Center, Mashhad University of Medical  
Sciences, Mashhad, Iran  
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Assistant Professor, Research Center for Environmental Pollutants, Qom University of Medical Sciences, Qom, Iran  
MSc of Environmental Health Engineering, Faculty of Health, Mashhad University of Medical Sciences, Mashhad, Iran  
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BSc of Mechanic Engineering, Young Researchers and Elite Club, Majlesi Branch, Islamic Azad University, Isfahan, Iran  
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Assistant Professor, Department of Microbiology and Virology, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran  
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Research expert, Waste Management Organization of Mashhad Municipality, Mashhad, Iran  
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Associate Professor, Department of Statistics and Epidemiology, School of Health, Mashhad University of Medical Sciences, Mashhad, Iran  
Professor, Department of Environmental Health Engineering, Social Determinants of Health Research Center, Mashhad University of Medical  
Sciences, Mashhad, Iran  
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MSc Student of Environmental Health Engineering, student of Research Committee, School of Health, Mashhad University of Medical Sciences,  
Mashhad, Iran  
Abstract  
The usage of fluorescent lamps is increasingly common in the world. The advantages of these lamps have led to consuming these  
kinds of lamps compared to incandescent lamps. But disposal of the fluorescent lamps because of containing heavy metals such as  
mercury is considered. The objective of this study is to confirm the comparison of mercury concentration in different linear and compact  
fluorescent lamps made in Iran. This study was conducted on two kinds of spent fluorescent lamps in Mashhad city in Iran. Lamp crusher  
(LAMPA) was introduced as an eco-friendly method for obtaining the phosphor powder. Extracting mercury was done by acid leaching  
method. Mercury concentration was determined by cold vapor atomic absorption spectrometry. Mercury concentration in five kinds of  
spent fluorescent lamps T8, T10, CFL23W, CFL15W, and CFL11W was 372.52, 510.53, 55.65, 175.53 and 260.82 ppb, respectively.  
There are differences between Hg concentration and phosphor powder that might be due to some factors like the year of manufacture  
and the hours of operation. According to the Hg concentration from the powder and generation rate of the spent fluorescent lamps in the  
world and Iran, waste management of spent fluorescent lamps is necessary.  
Keywords: Mercury, Phosphor Powder, Spent Fluorescent Lamps, Waste Management, Lamp Crusher Machine  
problems. About 620 million fluorescent lamps are discarded  
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Introduction1  
in the United States annually; many of them are broken during  
disposal. This amount distributes approximately 2-4 tons of Hg  
per year in the United States (11). The number of CFLs  
discarded in Iran in 2010, 2011, and 2012 was 159.802,  
In recent years, spent fluorescent lamps (SFLs) have been  
widely used in Iran as a means of optimizing energy  
consumption (1). SFLs are a type of lamps with a glass tube  
coated with fluorescent materials (mainly as calcium hydrogen  
phosphate) that are filled with an inert gas (usually argon) and  
Hg (2, 3). It is estimated that, in the best condition, a normal  
fluorescent lamp contains about 30-40 mg of Hg that most of  
which is absorbed in the phosphor powders, aluminum, end  
caps and glass (4, 5).  
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83.822, and 153.756 million per year, respectively. It is  
estimated that