Table 1 The market prices of the various chemicals and cost analysis of various chemicals used as magnesium sources.
From: Crystallization and precipitation of phosphate from swine wastewater by magnesium metal corrosion
Chemicals | Market price | Costs for using different magnesium reagents($ kg–1 struvite) | |||
|---|---|---|---|---|---|
($ kg−1) | Mg metal | MgOa | MgCl2b | MgSO4b | |
Mg metal (99.9%) | 2.1 | 0.25 | — | — | — |
MgO (95%) | 0.12 | — | 0.05 | — | — |
MgCl2·6H2O | 0.12 | — | — | 0.12 | — |
MgSO4·7H2O | 0.13 | — | — | — | 0.17 |
NaOH | 0.46 | — | — | 0.11 | 0.11 |
Total | — | 0.25 | 0.05 | 0.23 | 0.28 |
