Research Article
Chemical Modifications of Cassava Peel as Adsorbent Material for Metals Ions from Wastewater
Table 1
CCRD planning matrix (coded and real rates).
| Tests | | Mass (mg) | | pH |
| 1 | −1.00 | 396.39 | −1.00 | 3.60 | 2 | 1.00 | 1103.61 | −1.00 | 3.60 | 3 | −1.00 | 396.39 | 1.00 | 6.40 | 4 | 1.00 | 1103.61 | 1.00 | 6.40 | 5 | 0.00 | 750.00 | 0.00 | 5.00 | 6 | −1.41 | 250.00 | 0.00 | 5.00 | 7 | 0.00 | 750.00 | 1.41 | 7.00 | 8 | 1.41 | 1250.00 | 0.00 | 5.00 | 9 | 0.00 | 750.00 | −1.41 | 3.00 | 10 | 0.00 | 750.00 | 0.00 | 5.00 | 11 | 0.00 | 750.00 | 0.00 | 5.00 | 12 | 0.00 | 750.00 | 0.00 | 5.00 |
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