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Butanol degradation and volatilization in soils amended with spent acid or sulfuric acid

Butanol degradation and volatilization in soils amended with spent acid or sulfuric acid

Journal of Environmental Quality 14(1): 83-86

Butanol persistence may be an important consideration in determining the phytotoxic effects of alkylation spent acid added to soils. The degradation and volatilization of n(1-14C)butanol were monitored in 2 calcareous soils from New Mexico [USA] amended or not with spent or reagent grade H2SO4. Degradation of butanol to CO2 was rapid and was the primary mechanism of loss from these soils. After 20 days, 14CO2 evolution averaged 58 and 51% of the added 14C for Glendale clay (Typic Torrifluvents) and Lea sandy loam (Petrocalcic Paleustolls), respectively; a majority of this loss occurred within 2 days. Acid type (spent or reagent grade) did not affect degradation, but 14CO2 production increased with acid rate. Volatilization was essentially complete within 1 day and averaged 8 and 16% of the added 14C for the Glendale clay and Lea sandy loam soils, respectively. Acid rate, but not acid type, affected volatilization loss. The summation of degradation and volatilization losses was similar for both soils and averaged 67% after 20 days, a majority of which was lost within 2 days.

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Accession: 001311102

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