“K + , Ca 2+ , …+ , Fe 2+ , and Mn 2+ ) inhibited the … of LIN by birnessite, following the order: Mn 2+ > Fe 2+ > Ca 2+ > Mg 2+ > K + ≈ Na + , due to the sorption … cations on birnessite, companying with the electron transfer and precipitation of oxides (for Mn 2+ and Fe 2+ ).”