Abstract
Metal-containing devices in electronic waste such as printed circuit boards can be recycled for the recovery of noble metals such as gold, silver, platinum or palladium using a thermal process. In this process the plastics are burned and more than 90% of the noble metals are transfered into a copper matrix. Finally the pure metals are refined by electrolysis. Because of the content of brominated flame retardants and chlorinated polymers in the plastics, formation of halogenated dibenzo-p-dioxins and dibenzofurans cannot be excluded. The use of modern filter techniques minimizes the emission of these substances. As a precaution the electronic waste is controlled for its content of organohalogen compounds and organic carbon. This work describes an analytical method for the determination of the sum of organohalogen compounds and organic carbon in electronic waste. The investigation of different charges of electronic waste in the fraction of particle size<0.1 mm show concentrations for the sum of organobromine compounds in the range of 0.2–4.8% originating from brominated flame retardants in the plastics. The total content of organochlorine compounds is <0.01–0.13%, showing that chlorinated plastics were efficiently removed before the thermal process. The content of organic carbon is between 13 and 27%. Because of the portion of fine particle size in relation to the total sample amount, the results have to be multiplied by a factor of about 0.25 to 0.3.
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References
Deutscher Bundestag (ed) (28. 4. 1993) Drucksache 12/4820
Langner BE (1993) Verarbeitung von Elektronikschrotten, Norddeutsche Affinerie (company brochure)
Durham T (1993) New Scientist 30:30–31
Report of the UMK-Working Group “Bromhaltige Flammschutzmittel” (ed) (September 1989) of Germany
Buser H (1986) Environ Sci Technol 20:404–408
Luijk R, Wever H, Olie K, Govers HAJ, Boon JJ (1991) Chemosphere 23:1173–1183
Luijk R, Govers HAJ (1992) Chemosphere 25:361–374
Sovocool GW, Donnelly IR, Muslow WD, Vonnahme TL, Nunn NJ, Tondeur Y, Mitcum RK (1989) Chemosphere 18:193–200
Harless RL, Lewis RG (1989) Chemosphere 18:201–208
Huang LQ, Tong H, Donnelly IR (1992) Anal Chem 64:1034–1040
Schwind KH, Hosseinpour J, Thoma H (1988) Chemosphere 17:1875–1884
Thoma H, Hauschulz G, Hutzinger O (1987) Chemosphere 16:1579–1581
Rappe C (1992) Conference “Flame Retardants 1992” in Umea. Edited by The Plastics and Rubber Institute: 133–148
Stachel B, Lahl U, Schroer W (1984) Chemosphere 13:703–714
Dagani MJ, Benga TJ, Saunders DC (1985) Bromine compounds. In: Gerhartz W (ed) Ullmann's encyclopedia of industrial chemistry, vol A4. VCH, Weinheim, pp 405–429
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Stachel, B., Behringer, G. & Schacht, U. Determination of organohalogen compounds and organic carbon as sum parameter in electronic waste. Fresenius J Anal Chem 350, 375–378 (1994). https://doi.org/10.1007/BF00325609
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DOI: https://doi.org/10.1007/BF00325609