Organic matter content is one of the most important indicators of soil health, and it is widely known that soil organic matter content varies greatly depending on soil particle size. The sandy soil in Florida has relatively coarse particles which are inefficient in sorbing organic matter. How to increase organic matter content in these sandy soil is a common challenge faced by farmers and land managers.
It is previous found that Iron and Aluminum oxide would largely increase the capacity of sand particles in sorbing organic matter by increasing its specific surface area. However, the relative capacity of Fe- vs. Al- coating in sorbing organic matter is not well understood. The overall goal of my proposed research is to compare the organic matter sorption capacity of Fe oxide vs. Al oxide using Fe- and Al- coated sands synthesized in the laboratory.