| abstract |
Floc compositions are disclosed that may be used in a water purification process, e.g. in a process for purifying acid mine drainage. In one embodiment, a floc composition is disclosed having an oil soluble cation, a metal ion, a hydroxide or oxide, and an anion of the formula {(R4N+)x(N(II)n(OH-)z(SO4 2-)w}m for the case of divalent metal ions or {(R4N+)x(M(III))y(OH-),(SO4 2)w}q for the case of trivalent metal ions. |