EFFECT OF MINERAL SYSTEMS ON MERCURY REMOVAL FROM AQUEOUS SOLUTION PART II | Journal of Applied ...

The effects of several mineral systems on mercury removal were studied. The effects of pH, particle concentration, residence period, and ionic strength were investigated. The sorption capabilities of the various clay minerals, goethite, and their mixes were found to be dependent on particle size, according to sorption isotherms. However, outer sphere complexation, inner sphere complexation, and intra-particle diffusion appeared to govern the sorption pattern. For all mineral systems, mercury showed both linear and non-linear sorption increases as the pH was increased. As particle concentration (Cp) or solid concentration increased, mercury sorption decreased. Over the spectrum of particle sizes studied, this showed both linear and non-linear decreases. The decrease in mercury sorption as Cp was raised could be attributed to the mineral systems' particle size and aggregation.

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