Figure 1
From: Alkaline decomposition of synthetic jarosite with arsenic
Spherical aggregate of synthetic jarosite with arsenic (SEM, secondary electrons). It has been reported that the potassium jarosite contains more arsenic in its structure than the sodium jarosite [8]. The spherical geometry is due to the fact that the particles were obtained by the precipitation technique with mechanical stirring; such geometry, as well as the compact structure are excellent parameters for heterogeneous kinetics studies.