Use of Hydrophilic Insoluble Polymers in the Restoration of Metal-Contaminated Soils

Table 3

Enzyme activity of polymer-amended metal-contaminated soils.

Metals contaminating the soil	Soil enzyme	Increase in enzyme activity in amended soils	Reference
		compared to unamended soils
Cu	Acid phosphatase	1.7
Cu	𝛽 -glucosidase	1.8	[46]
Cu	Cellulase	Not stimulated
Pb	Dehydrogenase	3.3
Pb	Protease	11
Pb	Acid phosphatase	1.9	[22]
Pb	𝛽 -glucosidase	3.3
Pb	Cellulase	11
Pb, Cu, and Zn	Dehydrogenase	1.6
Pb, Cu, and Zn	Acid phosphatase	Not stimulated	[40]
Pb, Cu, and Zn	𝛽 -glucosidase	1.5
Cd	Dehydrogenase	Not stimulated
Cd	Protease	1.5
Cd	Acid phosphatase	1.1	Unpublished results
Cd	𝛽-glucosidase	1.4
Cd	Cellulase	2.9