Table 5 Chemical composition of synthetic zeolite and cement.

From: Cyclic drying and wetting tests on combined remediation of chromium-contaminated soil by calcium polysulfide, synthetic zeolite and cement

Chemical composition

SiO2

A12O3

CaO

MgO

Fe2O3

K2O

Na2O

TiO2

SO3

Loss on ignition

Cement/%

21.87

5.69

62.25

3.12

3.80

1.41

0.35

1.02

0.48

Synthetic zeolite/%

50.29

14.17

3.42

1.96

7.23

1.05

20.88

0.55