Table 1 Matrix for the CCD
From: Green waste recycling of peanuts highly contaminated with aflatoxins in clay brick manufacturing
Factor | Level | ||||
|---|---|---|---|---|---|
Low | Central | High | |||
(−1) | (0) | (+1) | (−α) | (+α) | |
X1: Clay replacement, % | 6 | 20.50 | 35 | 0 | 41 |
X2: Firing temperature, °C | 725 | 800 | 825 | 693.93 | 906 |