A three-year research trial at the University of Florida is providing experimental data to evaluate the effectiveness of compost in preventing or reducing arsenic leaching into groundwater. Two different compost products are being used: MSW compost from the Sumter County (FL) facility and biosolids compost from the Solid Waste Authority of Palm Beach County. Compost was added to soil at an equivalent rate of 50 tons/acre.
First year results indicated: Composts at the rates used do show some inhibitory effects on arsenic concentrations in the leachates. However, the cumulative amounts of leached arsenic were dependent on the types of compost. The MSW compost reduced leachability of …
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