Clay type

Kajansi

Kawuku

Budadiri

Chelel

Cotton oil

Sunflower oil

Cotton oil

Sunflower oil

Cotton oil

Sunflower oil

Cotton oil

Sunflower oil

Percentage leach

10−3∆Ha/kJ/ mol−1

0%

−7.9

−45.3

−7.8

−13.75

−1.7

−21.7

−14.6

−18.8

5%

−9.6

−25.4

−10.4

−25.1

−16.2

−29.8

−21.5

−26.4

10%

−18.3

−54.4

−16.3

−25.1

−16.2

−29.8

−21.5

−29.4

20%

−35.5

−113.2

−29.6

−60.62

−28.7

−75.04

−35.8

−44.08