Research Article
Removal of Zinc from Aqueous Solution by Optimized Oil Palm Empty Fruit Bunches Biochar as Low Cost Adsorbent
Table 2
Design matrix with results.
| Run | Point type | () HTT (°C) | () HR (°C/min) | () RT (min) | Yield (%) | (mg/g) |
| 1 | Center | 550.00 | 10.00 | 105.00 | 26.14 | 13.72 | 2 | Axial | 550.00 | 15.00 | 105.00 | 25.2 | 11.43 | 3 | Fact | 460.81 | 7.03 | 60.40 | 32.08 | 10.28 | 4 | Center | 550.00 | 10.00 | 105.00 | 25.97 | 13.91 | 5 | Axial | 550.00 | 10.00 | 180.00 | 24.93 | 12.11 | 6 | Axial | 550.00 | 10.00 | 30.00 | 26.67 | 9.47 | 7 | Axial | 700.00 | 10.00 | 105.00 | 24.67 | 13.67 | 8 | Fact | 639.19 | 7.03 | 149.60 | 26.01 | 14.74 | 9 | Axial | 400.00 | 10.00 | 105.00 | 33.73 | 7.59 | 10 | Fact | 460.81 | 12.97 | 149.60 | 26.45 | 9.89 | 11 | Axial | 550.00 | 5.00 | 105.00 | 28.06 | 13.01 | 12 | Center | 550.00 | 10.00 | 105.00 | 26.25 | 14.22 | 13 | Fact | 460.81 | 12.97 | 60.40 | 28.54 | 8.35 | 14 | Fact | 460.81 | 7.03 | 149.60 | 30.52 | 11.53 | 15 | Center | 550.00 | 10.00 | 105.00 | 25.88 | 14.13 | 16 | Center | 550.00 | 10.00 | 105.00 | 25.9 | 13.81 | 17 | Fact | 639.19 | 7.03 | 60.40 | 26.29 | 12.22 | 18 | Fact | 639.19 | 12.97 | 149.60 | 23.2 | 13.37 | 19 | Center | 550.00 | 10.00 | 105.00 | 25.3 | 14.36 | 20 | Fact | 639.19 | 12.97 | 60.40 | 24.71 | 10.86 |
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