From: Effects of metal cation substitution on hexavalent chromium reduction by green rust
Reactant | Expected chemical compositiona | [Fe2+](aq) (mmol L−1)b |
---|---|---|
GR-SO4 | \(Fe_{4}^{II} Fe_{2}^{III} \left( {OH} \right)_{12} SO_{4} \cdot2H_{2} O\) | 25 |
Al-GR | \(Fe_{4}^{II} Fe_{1.9}^{III} Al_{0.1} \left( {OH} \right)_{12} SO_{4} \cdot2H_{2} O\) | 27 |
Mg-GR | \(Fe_{3.8}^{II} Mg_{0.2} Fe_{2}^{III} \left( {OH} \right)_{12} SO_{4} \cdot2H_{2} O\) | 23 |
Zn-GR | \(Fe_{3.8}^{II} Zn_{0.2} Fe_{2}^{III} \left( {OH} \right)_{12} SO_{4} \cdot2H_{2} O\) | 23 |