Detoxification of hazardous dust with marine sediment

Yu Ling Wei, Chang Yuan Lin, H. Paul Wang

研究成果: Article同行評審

6 引文 斯高帕斯(Scopus)


Hazardous electric arc furnace dust containing dioxins/furans and heavy metals is blended with harbor sediment, fired at 950-1100°C to prepare lightweight aggregates. Dust addition can lower the sintering temperature by about 100°C, as compared to a typical industrial process. After firing at 950°C and 1050°C, more than 99.85% of dioxins/furans originally present in the dust have been removed and/or destructed in the mix containing a dust/sediment ratio of 50:100. The heavy metals leached from all fired mixes are far below Taiwan EPA legal limits. The particle density of the lightweight aggregates always decreases with increasing firing temperature. Greater addition of the dust results in a considerably lower particle density (mostly <2.0 g cm-3) fired at 1050°C and 1100°C. However, firing at temperatures lower than 1050°C produces no successful bloating, leading to a denser particle density (>2.0 g cm-3) that is typical of bricks.

頁(從 - 到)810-815
期刊Marine Pollution Bulletin
出版狀態Published - 2014 8月 30

All Science Journal Classification (ASJC) codes

  • 海洋學
  • 海洋科學
  • 污染


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