International Scholarly Research Notices / 2011 / Article / Tab 2

Research Article

Industrial Wastes in Soil Improvement

Table 2

Chemical composition of rice husk ash.

ConstituentPercentage

Silica (SiO2)91.1
Alumina (Al2O3)0.4
Calcium oxide (CaO)0.4
Ferric oxide (Fe2O3)0.4
Sodium (Na2O)0.1
Sulphur (Na2O)0.1
Magnesium oxide (MgO)0.5
Potassium oxide (KaO)2.2
Loss on ignition4.8

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