I basically need access to reliable solubility constants of sulfates which are associated with acid rock drainage, acid sulfate soils and acid mine drainage.
Perhaps someone has made a recent compilation?
please refers this paper "Microbial sulfate reduction and metal attenuation in pH 4 acid mine water"
Acid mine drainage (AMD) is caused primarily by the oxidation of sulfide minerals and is characterized by high aqueous concentrations of metals and low pH values in the absence of neutralizing agents such as carbonates. Although the oxidation of sulfide minerals can be abiotic, the oxidation rate can be enhanced by several orders of magnitude by sulfur- and iron-oxidizing bacteria [1-3] and archaea [4].
Abstract:
Sediments recovered from the flooded mine workings of the Penn Mine, a Cu-Zn mine abandoned since the early 1960s, were cultured for anaerobic bacteria over a range of pH (4.0 to 7.5). The molecular biology of sediments and cultures was studied to determine whether sulfate-reducing bacteria (SRB) were active in moderately acidic conditions present in the underground mine workings. Here we document multiple, independent analyses and show evidence that sulfate reduction and associated metal attenuation are occurring in the pH-4 mine environment. Water-chemistry analyses of the mine water reveal: (1) preferential complexation and precipitation by H2S of Cu and Cd, relative to Zn; (2) stable isotope ratios of 34S/32S and 18O/16O in dissolved SO4 that are 2–3 ‰ heavier in the mine water, relative to those in surface waters; (3) reduction/oxidation conditions and dissolved gas concentrations consistent with conditions to support anaerobic processes such as sulfate reduction. Scanning electron microscope (SEM) analyses of sediment show 1.5-micrometer, spherical ZnS precipitates. Phospholipid fatty acid (PLFA) and denaturing gradient gel electrophoresis (DGGE) analyses of Penn Mine sediment show a high biomass level with a moderately diverse community structure composed primarily of iron- and sulfate-reducing bacteria. Cultures of sediment from the mine produced dissolved sulfide at pH values near 7 and near 4, forming precipitates of either iron sulfide or elemental sulfur. DGGE coupled with sequence and phylogenetic analysis of 16S rDNA gene segments showed populations of Desulfosporosinus and Desulfitobacterium in Penn Mine sediment and laboratory cultures.
I looked at the literature for a 2009 paper (Hicks et al ., 2009. Effect of season and landscape position on the aluminium geochemistry of tropical acid sulfate soil leachate. Aust J. Soil Res. 47:137-153) and most solubility constants considered reliable were 20+ years old. For Al oxyhydroxy sulfates I can only suggested checking the citations for these papers - Nordstrom (1982), Adams and Rawajfih (1977). Haven't been through the same exercise for iron minerals I'm afraid. You could always do the same for Bigham & Nordstrom's 2000 review.
