A biological reduction method for removing free iron oxides from soils and colloidal clays
1942
Allison, L.E. | Scarseth, G.D.
1. A method is described for the removal of "free" iron oxides from soils and colloidal clays which employs the principle of microbial reduction and subsequent solution. 2. The effectiveness of this method was determined by comparing it with the chemical method described by Truog, et al., and with the untreated colloidal clays. 3. The removal of iron oxide coatings from colloidal clays increased their base exchange capacities in proportion to the amount of this constituent removed. 4. Aside from being a helpful research technic, the biological method, herein described, is a valuable teaching device for demonstrating the reltionship between energy materials and important soil transformations, a relationship that is frequently not fully appreciated.
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