Decomposition in Soil of Waste Cooking Oils Used in Potato Processing

Smith, J.H. (1974) Decomposition in Soil of Waste Cooking Oils Used in Potato Processing. Journal of Environment Quality. 3(3):279-281.

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Abstract

Cooking oils used in potato processing are sometimes wasted in
small quantities into the effluent that goes to land disposal. To determine
the effect of this oil on land, palm and soybean oils were
added to Portneuf silt loam at rates of 0.1, 0.5, 1.0, and 5.0 g oil in
100 g soil (2.2, 11.2, 22.4, and 112 metric tons/ha, respectively).
Nitrogen was added and the mixtures were incubated at constant
temperature in a CO₂-free continuously flowing air stream. Evolved
CO₂ was scrubbed from the air stream and decomposition calculated.
Both oils decomposed at the same rate at each application
rate. Maximum weekly decomposition was approximately 8 and
2.5 metric tons/ha for the 112 and 11.2 metric ton-applications,
respectively. There was no evidence for toxicity to the decomposition
systems with the high application of oil and no evidence
that difficulty would develop with land disposal of wastes containing
these edible cooking oils.

Item Type:	Article
NWISRL Publication Number:	0283
Subjects:	Irrigated crops > Potato Mass Import - autoclassified (may be erroneous)
Depositing User:	Dan Stieneke
Date Deposited:	20 Nov 2010 21:51
Last Modified:	16 Feb 2017 21:28
Item ID:	257
URI:	https://eprints.nwisrl.ars.usda.gov/id/eprint/257