From: Efficient chemical stabilization of tannery wastewater pollutants in a single step process: Geopolymerization
Metakaolin
% by weight
SiO2
58.9
Al2O3
34.7
Fe2O3
1.4
CaO
0.1
MgO
Na2O
K2O
0.7
TiO2
1.3