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Properties of Water Treatment Lime Sludges and Their Effectiveness as Agricultural Limestone Substitutes

M. D. Che, T. J. Logan, S. J. Traina and J. M. Bigham
Journal (Water Pollution Control Federation)
Vol. 60, No. 5 (May, 1988), pp. 674-680
Stable URL: http://www.jstor.org/stable/25043553
Page Count: 7
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Properties of Water Treatment Lime Sludges and Their Effectiveness as Agricultural Limestone Substitutes
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Abstract

Lagoon lime sludges were analyzed for a variety of physical, chemical, and mineralogical properties, including calcium carbonate equivalent (CCE) and fineness. Sludge and agricultural grade limestone samples were incubated in the laboratory after mixing with a loamy sand soil material, and soil pH changes were monitored. Lime sludges increased soil pH more than agricultural limestone. Final soil pHs were higher with sludges having higher CCE and total fineness efficiency (TFE). Study results indicate that water treatment lime sludges can effectively substitute for ground agricultural limestone soils.

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