Evaluation of odor emissions from amended dairy manure: Preliminary screening

Eileen Fabian, M. Arlene A. Adviento-Borbe, Robin C. Brandt, Patrick A. Topper, Deborah A. Topper, Herschel Adams Elliott, Robert E. Graves, Alexander Nikolov Hristov, Virginia A. Ishler, Maryann Victoria Bruns

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

Manure amendments have shown variable effectiveness in reducing odor. Twenty-two amendments were applied to dairy manure then evaluated for odor reduction efficacy after storage at 20°C for 3 d and 30 d. Amendments represented differing primary modes of action including: microbial digestive, oxidizing, disinfecting, masking, and adsorbent. Each amendment was added to 2 kg dairy manure (1:1.7 urine:feces; 12% total solids) following recommended rates. In this preliminary screening, one sample (n=1) of each amendment was evaluated along with untreated manure (Control). Odor emission from each treated manure and Control was estimated twice by five or six qualified odor assessors (n=10 or 12) after each storage duration, using an international standard for triangular forced-choice olfactometry. Odor quality was defined using hedonic tone, Labeled Magnitude Scale and ASTM methods for supra-threshold odor intensity, and an odor character wheel for descriptors. For selected treatments, odor emissions were significantly reduced relative to Control at 30 d versus 3 d incubation (P<0.0001). However, no amendment was significantly effective for both incubation times. Likewise, for all amendments tested, aging the manure slurry for 30 d significantly reduced odor emission and odor intensity (P<0.0001). A proprietary microbial amendment (Alken Enz-Odor + Clear Flo: aerobic/ facultative microbes with growth factors), disinfectant (hydrogen peroxide), and masking agent (Hyssopus officinalis essential oil) provided significant short-term control of odor (P <0.06). However, after 30 d seven amendments significantly increased odor emission (P<0.02) while only two amendments offered a significant efficacy (P<0.0001): a proprietary microbial aerobic/facultative product (Bio-Regen) and a proprietary mix of chemicals (Greaseater), both with weekly re-application. Hedonic tone observations suggested an improvement to "slightly to moderately unpleasant" smell versus untreated manure for all amendments except clinoptilolite zeolite adsorbent. Hedonic tone improvement was correlated with reduced manure odor supra-threshold intensity.

Original languageEnglish (US)
JournalAgricultural Engineering International: CIGR Journal
Volume13
Issue number2
StatePublished - Jun 1 2011

Fingerprint

odor emissions
dairy manure
Dairies
Manures
Odors
Screening
odors
screening
animal manures
adsorbents
Hyssopus officinalis
odor control
olfactometry
Adsorbents
disinfectants
total solids
wheels
smell
growth factors
hydrogen peroxide

All Science Journal Classification (ASJC) codes

  • Automotive Engineering
  • Agronomy and Crop Science
  • Energy (miscellaneous)
  • Industrial and Manufacturing Engineering

Cite this

Fabian, Eileen ; Adviento-Borbe, M. Arlene A. ; Brandt, Robin C. ; Topper, Patrick A. ; Topper, Deborah A. ; Elliott, Herschel Adams ; Graves, Robert E. ; Hristov, Alexander Nikolov ; Ishler, Virginia A. ; Bruns, Maryann Victoria. / Evaluation of odor emissions from amended dairy manure : Preliminary screening. In: Agricultural Engineering International: CIGR Journal. 2011 ; Vol. 13, No. 2.
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Evaluation of odor emissions from amended dairy manure : Preliminary screening. / Fabian, Eileen; Adviento-Borbe, M. Arlene A.; Brandt, Robin C.; Topper, Patrick A.; Topper, Deborah A.; Elliott, Herschel Adams; Graves, Robert E.; Hristov, Alexander Nikolov; Ishler, Virginia A.; Bruns, Maryann Victoria.

In: Agricultural Engineering International: CIGR Journal, Vol. 13, No. 2, 01.06.2011.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Evaluation of odor emissions from amended dairy manure

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AU - Fabian, Eileen

AU - Adviento-Borbe, M. Arlene A.

AU - Brandt, Robin C.

AU - Topper, Patrick A.

AU - Topper, Deborah A.

AU - Elliott, Herschel Adams

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AU - Bruns, Maryann Victoria

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