Efficient dehalogenation of automobile shredder residue in NaOH/ethylene glycol using a ball mill

Tomohito Kameda, Yuuzou Fukuda, Kye Sung Park, Guido Grause, Toshiaki Yoshioka

研究成果: Article査読

16 被引用数 (Scopus)

抄録

We investigated the effectiveness of sodium hydroxide/ethylene glycol (NaOH/EG) for dehalogenation of automobile shredder residue (ASR) using a ball mill. Efficient dehalogenation was achieved at atmospheric pressure by combining the use of EG (196 °C b.p.) as a replacement solvent for NaOH with ball milling, which improved contact between ASR and OH- in solution. Moderate NaOH concentrations and increased ball mill rotation speeds produced high dechlorination that was not significantly affected by the weight ratio of ASR to EG. NaOH/EG dechlorination increased with temperature with an apparent activation energy of 50 kJ mol-1 confirming that the reaction proceeded under chemical reaction control. The modified shrinking-core model was appropriate to explain the dechlorination process. Low chloro levels in our NaOH/EG-treated ASR suggested that this material could be used for feedstock recycling and the wet process may be applicable for dehalogenation of other important waste streams.

本文言語English
ページ(範囲)287-292
ページ数6
ジャーナルChemosphere
74
2
DOI
出版ステータスPublished - 2009 1

ASJC Scopus subject areas

  • Environmental Engineering
  • Environmental Chemistry
  • Chemistry(all)
  • Pollution
  • Health, Toxicology and Mutagenesis

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