Treated AMD values for major contaminants at the end of 15 d simulation compared with the average concentrations measured experimentally. Uncertainty is expressed as the 95% confidence interval.

Component	Average measured experimental value [mM]	Modelled value at 15 d simulation [mM]
Effluent values
Total sulfur	16.8 ± 1.6	16.7
Total sodium	21.3 ± 2.5	21.3
Total calcium	3.3 ± 0.4	3.3
Total magnesium	2.1 ± 0.2	2.0
Total iron	0.09 ± 0.03	0.02 (Fe2+ and Fe3+)
Total aluminium	0.001 ± 0.002	0.02
pH	7.2 ± 0.002	7.2
A2/A3 loop values
Total sulfate	19.2 ± 3.2	19.0
Total sulfide	8.4 ± 3.3	8.4
Total chloride	40.3 ± 2.2	41.4
pH	∼7.3	6.3