- 3:15 PM

Leaching of Brominated Flame Retardants (BFRs) and Metals from Electronic Wastes

R. Mark Bricka, Chemical Engineering, Mississippi State University, Box 9595, Mississippi State, MS 39762 and Otho Barnes, Civil Engineering, Mississippi State University, PO Box 9595, Mississippi State, MS 39762.

Electronic waste has become a serious problem in landfill leachates. Electronic waste is defined as waste that has become contaminated with toxic metals and brominated flame-retardants that are commonly found in electronic parts. Toxic metals such as aluminum, cadmium, and lead as well as brominated flame-retardants are believed to cause serious health problems.

The key brominated flame-retardants that are targeted for study include: Tetrabromobisphenol A (TBBPA), 2,2', 4', 4'5 pentabrominated diphenyl ether, 2,2'4'4'6' pentabrominated diphenyl ether, and decabrominated diphenyl ether. These isomers have been identified as being the most common flame-retardants used in electronic products. In addition toxic metals also are present in E-waste and can be mobile. This study is focused on the mobility of BFR and metals from E-wastes.

The electronic devices that will be investigated in the experiments are electronic circuit, LCD screen, and the outer casing of the laptops. This paper will present the results for the quantity of flame-retardants and metals that are mobile and leached from the electronic waste material. Dymamic leach tests as well as the toxicity characteristic- leaching procedure (TCLP) were conducted as part of this study.. The analysis that will be used to evaluate the characterization of these brominated flame-retardants is the Gas Chromatography with Electron Capture Detector, as well as Inductively Coupled Plasma analysis. ICP was used to measure the metals leached from the e-waste components.

A summary for the results from this study as well be presented. In addition details of the impact of these components on the environment will also be discussed.