TY - JOUR
T1 - Detoxification of hazardous dust with marine sediment
AU - Wei, Yu Ling
AU - Lin, Chang Yuan
AU - Wang, H. Paul
N1 - Funding Information:
This work was sponsored by the National Science Council of Taiwan through contract NSC 99-2221-E-029-008-MY3. Dioxin/furan measurement was performed by a Taiwan EPA-accredited laboratory, the Super Micro Mass Research & Technology Center of Cheng-Shiu University of Taiwan.
PY - 2014/8/30
Y1 - 2014/8/30
N2 - 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.
AB - 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.
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U2 - 10.1016/j.marpolbul.2014.01.016
DO - 10.1016/j.marpolbul.2014.01.016
M3 - Article
C2 - 24461694
AN - SCOPUS:84906264565
SN - 0025-326X
VL - 85
SP - 810
EP - 815
JO - Marine Pollution Bulletin
JF - Marine Pollution Bulletin
IS - 2
ER -
