Study on simultaneous recycling of EAF dust and plastic waste containing TBBPA

Mariusz Grzegorz Grabda*, Sylwia Oleszek, Etsuro Shibata, Takashi Nakamura

*この研究の対応する著者

研究成果: Article査読

25 被引用数 (Scopus)

抄録

In the present work we investigated the fates of zinc, lead, and iron present in electric arc furnace dust during thermal treatment of the dust with tetrabromobisphenol A (TBBPA) and tetrabromobisphenol A diglycidyl ether (TBBPADGE). Mixtures of these materials were compressed into pellets and heated in a laboratory-scale furnace at 550. °C for 80. min, under oxidizing and inert conditions.The solid, condensed, and gaseous-phase products were characterized using an array of analytical methods: scanning electron microscopy, X-ray diffraction, electron probe microscopy, inductively coupled plasma, ion chromatography, and gas chromatography.The results indicated that heating the mixtures under specific conditions enabled high separation of zinc and lead from iron-rich residues, by a bromination-evaporation process. In the case of TBBPADGE, a maximum of 85% of zinc and 81% of lead were effectively separated under the above conditions.The process is based on the reaction between the highly reactive HBr gas evolved during thermal degradation of the flame-retarded materials with zinc (ZnO and ZnFe2O4) and lead in the dust, followed by complete evaporation of the formed metallic bromides from the solid residue.

本文言語English
ページ(範囲)25-33
ページ数9
ジャーナルJournal of Hazardous Materials
278
DOI
出版ステータスPublished - 2014 8 15
外部発表はい

ASJC Scopus subject areas

  • 健康、毒物学および変異誘発
  • 汚染
  • 廃棄物管理と処理
  • 環境化学
  • 環境工学
  • 医学(全般)

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