Nutrient amendments for contaminated peri-glacial soils: Use of cod bone meal as a controlled release nutrient source

James L Walworth, C. R. Woolard, K. C. Harris

Research output: Contribution to journalArticle

28 Citations (Scopus)

Abstract

The lack of available nutrients, particularly nitrogen, often limits the rate of microbial petroleum hydrocarbon degradation in contaminated cold region soils. Microbial activity in many peri-glacial soils responds to addition of nitrogen, although excess levels can inhibit biodegradation by decreasing soil water potentials. Aqueous soluble inorganic fertilizer quickly partitions into soil water, increasing the salt concentration, and imposing an osmotic potential. Strategies that can be used to avoid microbial inhibition include the use of controlled release fertilizers. We studied the use of an organic fertilizer, cod bone meal, as a nutrient source for bioremediation. Nitrogen mineralization from cod bone meal was greater at 20 °C (first-order reaction rate constant k=0.0206 d-1) than at 10 °C (k =0.0154 d-1) and greater at pH 6.5 and 7.5 (k=0.0208 and 0.0189 d-1, respectively) than at pH 5.5 (k=0.0143 d-1). Net O2 consumption from diesel fuel degradation in a contaminated soil was greatly increased by addition of nitrogen and phosphorus in the form of diammonium phosphate (DAP) or cod bone meal relative to unfertilized soil. Cod bone meal fertilized soils had greater net O2 consumption than DAP fertilized soils. However, residual soil hydrocarbon analyses indicated no difference in petroleum loss between the two nutrient sources.

Original languageEnglish (US)
Pages (from-to)81-88
Number of pages8
JournalCold Regions Science and Technology
Volume37
Issue number2
DOIs
StatePublished - Sep 2003

Fingerprint

Nutrients
bone
Bone
Soils
nutrient
nitrogen
soil
Fertilizers
Nitrogen
phosphate
fertilizer
degradation
soil water potential
residual soil
cold region
petroleum hydrocarbon
bioremediation
reaction rate
microbial activity
Phosphates

Keywords

  • Bioremediation
  • Controlled release nutrients
  • Nitrogen

ASJC Scopus subject areas

  • Earth and Planetary Sciences(all)
  • Geotechnical Engineering and Engineering Geology

Cite this

Nutrient amendments for contaminated peri-glacial soils : Use of cod bone meal as a controlled release nutrient source. / Walworth, James L; Woolard, C. R.; Harris, K. C.

In: Cold Regions Science and Technology, Vol. 37, No. 2, 09.2003, p. 81-88.

Research output: Contribution to journalArticle

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