Table 2 Comparison of the reaction orders (n) and apparent activation energy (Ea) of the synthetic jarosite with arsenic and synthetic natrojarosite with arsenic in NaOH and Ca(OH) 2 media respectively
From: Alkaline decomposition of synthetic jarosite with arsenic
Jarosite type | Media | [OH-] | Reaction order | Activation energy, Ea |
|---|---|---|---|---|
mol L-1 | n | kJ mol-1 | ||
Synthetic jarosite with arsenic a | NaOH | >8.00 × 10-3 | 1.86 | 60.3 |
Ca(OH)2 | >1.90 × 10-2 | 1.15 | 74.4 | |
Synthetic natrojarosite with arsenic b | NaOH | >3.84 × 10-3 | 0.70 | 57.1 |
Ca(OH)2 | >2.21 × 10-2 | 1.51 | 48.6 | |
Synthetic jarosite c | NaOH | >2.70 × 10-2 | 0.6 | 43.0 |
Ca(OH)2 | >3.50 × 10-3 | 0.5 | 80.0 |