Table 4 Dioxins and chlorobenzenes concentrations during HEBM with CaO:SiO2 = 4:1.
From: Dioxins reformation and destruction in secondary copper smelting fly ash under ball milling
Compound (ng kg−1) | Milling time | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
4 h | 6 h | 8 h | 10 h | 12 h | ||||||
TEQ | Reduction % | TEQ | Reduction % | TEQ | Reduction % | TEQ | Reduction % | TEQ | Reduction % | |
2,3,7,8-TCDD | 290 | 69.79 | 390 | 59.38 | 540 | 43.75 | 610 | 36.46 | 700 | 27.08 |
1,2,3,7,8-PeCDD | 2,500 | 54.55 | 3,700 | 32.73 | 3,500 | 36.36 | 3,500 | 36.36 | 2,800 | 49.09 |
1,2,3,4,7,8-HxCDD | 360 | 67.27 | 490 | 55.45 | 400 | 63.64 | 330 | 70.00 | 210 | 80.91 |
1,2,3,6,7,8-HxCDD | 730 | 68.26 | 950 | 58.70 | 710 | 69.13 | 600 | 73.91 | 470 | 79.57 |
1,2,3,7,8,9-HxCDD | 520 | 62.86 | 720 | 48.57 | 620 | 55.71 | 470 | 66.43 | 380 | 72.86 |
1,2,3,4,6,7,8-HpCDD | 360 | 78.82 | 550 | 67.65 | 320 | 81.18 | 250 | 85.29 | 200 | 88.24 |
OCDD | 13 | 93.50 | 15 | 92.50 | 8.1 | 95.95 | 6 | 97.00 | 4.5 | 97.75 |
2,3,7,8-TCDF | 220 | 76.84 | 300 | 68.42 | 320 | 66.32 | 310 | 67.37 | 320 | 66.32 |
1,2,3,7,8-PeCDF | 210 | 83.85 | 300 | 76.92 | 260 | 80.00 | 220 | 83.08 | 170 | 86.92 |
2,3,4,7,8-PeCDF | 4,200 | 84.44 | 5,700 | 78.89 | 4,500 | 83.33 | 3,900 | 85.56 | 3,300 | 87.78 |
1,2,3,4,7,8-HxCDF | 2,200 | 73.81 | 2,900 | 65.48 | 2,000 | 76.19 | 1,600 | 80.95 | 1,100 | 86.90 |
1,2,3,6,7,8-HxCDF | 1,800 | 75.68 | 3,500 | 52.70 | 1,700 | 77.03 | 1,400 | 81.08 | 1,000 | 86.49 |
2,3,4,6,7,8-HxCDF | 1,200 | 86.52 | 1,000 | 88.76 | 660 | 92.58 | 530 | 94.04 | 360 | 95.96 |
1,2,3,7,8,9-HxCDF | 2,200 | 35.29 | 3,000 | 11.76 | 2,100 | 38.24 | 1,700 | 50.00 | 1,100 | 67.65 |
1,2,3,4,6,7,8-HpCDF | 680 | 75.71 | 900 | 67.86 | 520 | 81.43 | 420 | 85.00 | 300 | 89.29 |
1,2,3,4,7,8,9-HpCDF | 140 | 74.07 | 160 | 70.37 | 96 | 82.22 | 78 | 85.56 | 52 | 90.37 |
OCDF | 20 | 95.00 | 22 | 94.50 | 10 | 97.50 | 7.8 | 98.05 | 6 | 98.50 |
3,3′,4,4′-TeCB | 0.4 | 69.23 | 0.38 | 70.77 | 0.41 | 68.46 | 0.39 | 70.00 | 0.36 | 72.31 |
3,4,4′,5-TeCB | 0.96 | 70.91 | 0.9 | 72.73 | 0.93 | 71.82 | 0.9 | 72.73 | 0.63 | 80.91 |
3,3'4,4′,5-PeCB | 1,000 | 74.36 | 1,200 | 69.23 | 880 | 77.44 | 780 | 80.00 | 640 | 83.59 |
3,3′,4,4′,5,5′-HxCB | 210 | 77.42 | 240 | 74.19 | 150 | 83.87 | 140 | 84.95 | 96 | 89.68 |
2,3,3′,4,4′-PeCB | 0.17 | 68.52 | 0.18 | 66.67 | 0.15 | 72.22 | 0.14 | 74.07 | 0.11 | 79.63 |
2,3,4,4′,5-PeCB | 0.09 | 70.00 | 0.09 | 70.00 | 0.072 | 76.00 | 0.069 | 77.00 | 0.048 | 84.00 |
2,3′,4,4′,5-PeCB | 0.087 | 68.93 | 0.11 | 60.71 | 0.11 | 60.71 | 0.099 | 64.64 | 0.093 | 66.79 |
2′,3,4,4′,5-PeCB | 0.033 | 67.00 | 0.045 | 55.00 | 0.039 | 61.00 | 0.036 | 64.00 | 0.029 | 71.00 |
2,3,3′,4,4′,5-HxCB | 0.28 | 76.67 | 0.42 | 65.00 | 0.29 | 75.83 | 0.25 | 79.17 | 0.17 | 85.83 |
2,3,3′,4,4′,5′-HxCB | 0.21 | 73.08 | 0.22 | 71.79 | 0.15 | 80.77 | 0.12 | 84.62 | 0.099 | 87.31 |
2,3′,4,4′,5,5′-HxCB | 0.11 | 66.67 | 0.13 | 60.61 | 0.099 | 70.00 | 0.093 | 71.82 | 0.075 | 77.27 |
2,3,3′,4,4′,5,5′-HpCB | 0.45 | 76.32 | 0.54 | 71.58 | 0.3 | 84.21 | 0.26 | 86.32 | 0.18 | 90.53 |
Total Dioxins | 18,856 | 76.16 | 26,040 | 70.18 | 19,297 | 78.67 | 16,854 | 80.94 | 13,210 | 84.76 |
PeCBz | 3.03 | 96.47 | 1.89 | 97.80 | 1.26 | 98.53 | 0.893 | 98.96 | 0.618 | 99.28 |
HxCBz | 23.63 | 89.61 | 10.92 | 95.20 | 5.80 | 97.45 | 5.16 | 97.73 | 3.480 | 98.47 |
