Comparison Of Mercury Distribution Between The Types Of Spent Fluorescent Lamp

Rhee, Shi‐Woo; Park, H.-S.; Choi, H.H.

doi:10.1515/amm-2015-0117

Cited by 3 publications

(1 citation statement)

References 5 publications

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“…It is estimated that most spent fluorescent lamps are disposed by incineration or in landfills, and some may be left without undergoing appropriate treatment. found that most mercury in spent fluorescent lamps is contained in phosphor powder, so they need to be treated appropriately [9][10][11]. Choi et al reported mercury content in phosphor powder of spent linear fluorescent lamps was about 3500 mg/kg or higher [12].…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Energy Consumption in the Mercury Treatment of Phosphor Powder from Spent Fluorescent Lamps Using a Thermal Process

Choi

Rhee

2017

Sustainability

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Abstract:In a pilot-plant-scale thermal mercury treatment of phosphor powder from spent fluorescent lamps, energy consumption was estimated to control mercury content by the consideration of reaction kinetics. Mercury content was analyzed as a function of treatment temperature and time. The initial mercury content of the phosphor powder used in the thermal process was approximately 3500 mg/kg. The target mercury content in the phosphor powder thermal process of the phosphor powder was 5 mg/kg or less at 400 • C or higher because the target mercury content was recommended by Minamata Convention and Basel Convention. During thermal processing, the reaction rate was represented by a first order reaction with the Arrhenius equation. The reaction rate constant increased with temperature from 0.0112 min −1 at 350 • C to 0.0558 min −1 at 600 • C. The frequency factor was 2.51 min −1 , and the activation energy was 6509.11 kcal/kg. Reaction rate constants were used to evaluate the treatment time required to reduce mercury content in phosphor powder to be less than 5 mg/kg. The total energy consumption in a pilot-plant-scale thermal process was evaluated to determine the optimal temperature for removing mercury in phosphor powder.

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Section: Introductionmentioning

confidence: 99%

Evaluation of Energy Consumption in the Mercury Treatment of Phosphor Powder from Spent Fluorescent Lamps Using a Thermal Process

Choi

Rhee

2017

Sustainability

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Identification of mercury species in spent fluorescent lamps and mercury recovery by distillation

Meng

Yang

et al. 2023

Energy Reports

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Estimation of mercury amount in the components of spent U-type lamp

Rhee

2016

Environmental Technology

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Spent U-type lamps are strongly encouraged to be separately managed in Korea, because U-type lamps are categorized as a household waste and thereby could not be managed properly. Determination of mercury amount in the components of U-type lamp, such as plastics, glass tube and phosphor powder from 3 U-type lamp manufacturers (A, B and C), is carried out to estimate the mercury content in spent U-type lamps. Regardless of lamp manufacturers, the portion of mercury in phosphor powder was higher than 90%, but that in plastics and others was less than 1%. At an air flow rate of 1.0 L/min, the range of the initial mercury concentration in vapor phase for U-type lamp was between 849 and 2076 µg/m from 3 companies. The estimated mercury amount in vapor phase of U-type lamp was in the range from 0.206 mg for company A to 0.593 mg for company B. And the portion of mercury in vapor phase in the total amount of mercury was estimated in the range from 3.0% for company A to 6.7% for company B. Hence, it is desirable to get rid of mercury from phosphor powder in order to perform U-type lamps recycling.

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Comparison Of Mercury Distribution Between The Types Of Spent Fluorescent Lamp

Cited by 3 publications

References 5 publications

Evaluation of Energy Consumption in the Mercury Treatment of Phosphor Powder from Spent Fluorescent Lamps Using a Thermal Process

Evaluation of Energy Consumption in the Mercury Treatment of Phosphor Powder from Spent Fluorescent Lamps Using a Thermal Process

Identification of mercury species in spent fluorescent lamps and mercury recovery by distillation

Estimation of mercury amount in the components of spent U-type lamp

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