Liming of acid surface waters: Effect of water constituents and material impurities on calcite dissolution kinetics

摘要

Using limestone instead of soda or lime as neutralizing product during lake water treatment has additional economic and ecological benefits. Dissolution kinetics of pure calcite is well investigated. However the composition of natural carbonates as well as the constituents in mine waters have strong influence on solution kinetics and may inhibit dissolution processes during lake remediation. 25 different neutralisation products were tested and investigated by XRF and SEM-EDX. The reactivity of synthetic marble powder and two industrial products (KSM Beroun, CC20) was investigated in a free-drift batch-experiment by adding different amounts of inhibiting ions.