Analyses performed in the laboratory using natural shrimp shells and commercial chitin
| Test . | Material . | Standard . | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Shrimp shells . | Commercial chitin . | runoff . | |||||||
| Quantity (g) | 5 | 5 | 10 | 10 | 5 | 5 | 10 | 10 | – |
| Treatment | A | B | A | B | A | B | A | B | B |
| Test . | Material . | Standard . | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Shrimp shells . | Commercial chitin . | runoff . | |||||||
| Quantity (g) | 5 | 5 | 10 | 10 | 5 | 5 | 10 | 10 | – |
| Treatment | A | B | A | B | A | B | A | B | B |
Except for standard test (runoff), all tests were performed under the conditions of 24 hours of contact time and low agitation (0–100 rpm). In all tests the Cr, Pb, Ni, Cu, Zn, Fe, and Mn metals were analyzed.
Treatment A: 200 mL of distilled water; treatment B: 200 mL of runoff.