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Field Olfactometry Odor Measurement. Penn State Odor Assessment Laboratory UMES Odor Assessment Kick-off Training August 16 – 18, 2011 University Park, PA. R.C. Brandt, PhD, PE Department of Agricultural and Biological Engineering The Pennsylvania State University.

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Field olfactometry odor measurement

Field Olfactometry Odor Measurement

Penn State Odor Assessment Laboratory

UMES Odor Assessment Kick-off Training

August 16 – 18, 2011

University Park, PA

R.C. Brandt, PhD, PE

Department of Agricultural and Biological Engineering

The Pennsylvania State University



Field olfactometer
Field Olfactometer Olfactometry?

How is Odor Threshold ConcentrationMeasured in Ambient Air?


Is field olfactometry a new idea
Is Field Olfactometry a New Idea? Olfactometry?

Scentometer®

  • Research sponsored by the U.S. Public Health Service, 1958

  • Originally manufactured by Barnebey-Cheney Corp, early 1960’s

  • Now manufactured & sold by Barnebey and Sutcliff Corp.

Photo image by St. Croix Sensory, Inc.


Dilution of odor in ambient air
Dilution of Odor in Ambient Air Olfactometry?

Ambient Air

Observer

Odor

Source

Nuisance?

Air Flow

D/T

7

15

30

60

2

4

Dilution-to-Threshold using Field Olfactometry




Normal Population Olfactometry?

Smell Bell

Chart image by St. Croix Sensory, Inc.



Why field olfactometry
Why Field Olfactometry? Olfactometry?

Advantages:

  • On-site “REAL-TIME” measurement

  • No need for sample collection

  • Lower detection levels possible

  • Relatively low cost

    Disadvantages:

  • Does not provide emission rate

  • Variable field conditions

  • Personnel logistics


Multiple Assessor Repeat Observation Olfactometry? Field Olfactometry Protocol


Use of Manure Rings for Assessment Olfactometry? of Dairy Odors from Alternative Application Methods

Prevailing Wind

Direction

10 foot wide swath of manure (6000 gal/acre)

Odor

Panel

Advantages:

Eliminates wind direction as a primary source of variance

Maintains constant odor assessor distancefrom odor source

200 foot diameter manure ring


Field Olfactometry?Olfactometry D/T versus Time



A From Land-Applied Biosolids

Same letter indicates no statistical difference ..... composited over time (α=0.05).

B

B

C


Sensory From Land-Applied BiosolidsComparisons -

Odor Intensity versus Log BET10

r=0.87


Sensory From Land-Applied BiosolidsComparisons -

Hedonic Tone versus Log BET10

r=0.89


Sensory From Land-Applied BiosolidsComparisons -

Intensity versus Hedonic Tone

r=0.92


Use of field olfactometry for quantification of wwtp dewatering facility odors
Use of Field Olfactometry for Quantification of WWTP Dewatering Facility Odors

Penrose Avenue

2

3

4

1

5

6

11

12

10

9A

9B

Interstate - 95

7

8


Field Dewatering Facility OdorsOlfactometry D/T (BET10)


Sensory Dewatering Facility OdorsComparisons

Odor Intensity versus Log BET10

r=0.99


Sensory Dewatering Facility OdorsComparisons

Hedonic Tone versus Log BET10

r=0.99


Swine Manure Odor Ring Study Dewatering Facility Odors

Log BET10 and % odor Reduction


Poultry House Odor Mitigation using Dewatering Facility Odors

Shelterbelt vegetation

Layer House

Fans

W

M

E

Air Sample Locations

NR PERC Field Maps 7-23-06.ppt

B



Field + Laboratory Olfactometry may assist odor mitigation.

USDA-NRCS CIG Grant: Promoting adoption of innovative conservation cropping systems on livestock farms.




Take-Home Point Dairy Manure Odors by 58%

Field olfactometry works!

This technology can provide vital information for high-value decision-making

Questions?


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