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The behaviour of thiocyanate and cyanate during the precipitation of potassium jarosite was investigated. Thiocyanate strongly complexes dissolved ferric ion and thereby reduces the amount of jarosite precipitated. The composition of the jarosite, however, is virtually independent of the thiocyanate concentration, and < 0.1 wt% SCN is incorporated in the jarosite structure. Some hydrolysis of...
The behaviour of cadmium during the precipitation of ammonium jarosite has been investigated as a function of the cadmium concentration, the ZnSO 4 concentration and the pH of the synthesis solutions. The Cd content of the jarosite seems to increase in a linear manner with increasing Cd concentrations in the solution, but the extent of Cd incorporation is always low. Less than 100 ppm Cd...
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