Phototrophic anaerobic lagoons as affected by copper and zinc in swine diets

J. E. Gilley, D. P. Spare, R. K. Koelsch, D. D. Schulte, P. S. Miller, A. M. Parkhurst

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

Odor emissions from anaerobic lagoons containing large populations of phototrophic bacteria are usually minimal. This study was conducted to determine whether copper (123 ppm) and zinc (2,310 ppm) in diets fed to weanling pigs for therapeutic purposes affect phototrophic conditions within lagoons. Column reactors containing 47 L of swine lagoon sludge and supernatant were used to represent lagoons. The reactors were placed in an environmental chamber maintained at 24°C. Copper, zinc, and control manure were added to the reactors at a volatile solids loading rate of 128 gvs m-3 da-1 using a hydraulic retention time of 32.5 days. Bacteriochlorophyll a, copper, reduction-oxidation potential, salinity, sulfate, sulfide, and zinc were then measured for at least 99 days. Sulfide, total copper and total zinc were the only parameters to be significantly impacted. The copper and zinc concentrations in the sludge increased but that of supernatant in the individual reactors changed little during the study period. However, the addition of dietary copper significantly increased the concentrations of sulfides in the supernatant, creating a condition that appeared toxic to phototrophic bacteria. In contrast, a decrease in sulfide concentration resulted from the addition of dietary zinc, resulting in an environment that may have been favorable to phototrophic bacteria. Thus, to minimize potential odor concerns, zinc rather than copper may be the best choice as a dietary supplement for weanling pigs.

Original languageEnglish (US)
Pages (from-to)1853-1859
Number of pages7
JournalTransactions of the American Society of Agricultural Engineers
Volume43
Issue number6
StatePublished - Dec 1 2000

Fingerprint

Nutrition
Zinc
Copper
lagoon
Swine
copper
zinc
diet
Diet
swine
sulfides
photosynthetic bacteria
Sulfides
sulfide
Bacteria
Odors
Sewage
weanlings
sludge
pig

Keywords

  • Anaerobic bacteria
  • Lagoon effluent
  • Manure management practices
  • Odor control
  • Swine lagoon waste

ASJC Scopus subject areas

  • Agricultural and Biological Sciences (miscellaneous)

Cite this

Gilley, J. E., Spare, D. P., Koelsch, R. K., Schulte, D. D., Miller, P. S., & Parkhurst, A. M. (2000). Phototrophic anaerobic lagoons as affected by copper and zinc in swine diets. Transactions of the American Society of Agricultural Engineers, 43(6), 1853-1859.

Phototrophic anaerobic lagoons as affected by copper and zinc in swine diets. / Gilley, J. E.; Spare, D. P.; Koelsch, R. K.; Schulte, D. D.; Miller, P. S.; Parkhurst, A. M.

In: Transactions of the American Society of Agricultural Engineers, Vol. 43, No. 6, 01.12.2000, p. 1853-1859.

Research output: Contribution to journalArticle

Gilley, JE, Spare, DP, Koelsch, RK, Schulte, DD, Miller, PS & Parkhurst, AM 2000, 'Phototrophic anaerobic lagoons as affected by copper and zinc in swine diets', Transactions of the American Society of Agricultural Engineers, vol. 43, no. 6, pp. 1853-1859.
Gilley, J. E. ; Spare, D. P. ; Koelsch, R. K. ; Schulte, D. D. ; Miller, P. S. ; Parkhurst, A. M. / Phototrophic anaerobic lagoons as affected by copper and zinc in swine diets. In: Transactions of the American Society of Agricultural Engineers. 2000 ; Vol. 43, No. 6. pp. 1853-1859.
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