Field olfactometry odor measurement
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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

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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


How are odor samples secured for laboratory olfactometry

How are Odor Samples Secured for Laboratory Olfactometry?


Field olfactometer

Field Olfactometer

How is Odor Threshold ConcentrationMeasured in Ambient Air?


Is field olfactometry a new idea

Is Field Olfactometry a New Idea?

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

Ambient Air

Observer

Odor

Source

Nuisance?

Air Flow

D/T

7

15

30

60

2

4

Dilution-to-Threshold using Field Olfactometry


Original scentometer d t interpretation

Original Scentometer D/T Interpretation


Field olfactometry odor measurement

How Are Odor Panelists Selected?


Field olfactometry odor measurement

Normal Population

Smell Bell

Chart image by St. Croix Sensory, Inc.


Pen test sensitivity history

Pen-Test Sensitivity History


Why field olfactometry

Why Field 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


Field olfactometry odor measurement

Multiple Assessor Repeat Observation Field Olfactometry Protocol


Field olfactometry odor measurement

Use of Manure Rings for Assessment 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 odor measurement

Field Olfactometry D/T versus Time


Use of inventory management to mitigate odor emissions from land applied biosolids

Use of Inventory Management to Mitigate Odor Emissions From Land-Applied Biosolids


Field olfactometry odor measurement

A

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

B

B

C


Field olfactometry odor measurement

Sensory Comparisons -

Odor Intensity versus Log BET10

r=0.87


Field olfactometry odor measurement

Sensory Comparisons -

Hedonic Tone versus Log BET10

r=0.89


Field olfactometry odor measurement

Sensory Comparisons -

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 olfactometry odor measurement

Field Olfactometry D/T (BET10)


Field olfactometry odor measurement

Sensory Comparisons

Odor Intensity versus Log BET10

r=0.99


Field olfactometry odor measurement

Sensory Comparisons

Hedonic Tone versus Log BET10

r=0.99


Field olfactometry odor measurement

Swine Manure Odor Ring Study

Log BET10 and % odor Reduction


Field olfactometry odor measurement

Poultry House Odor Mitigation using

Shelterbelt vegetation

Layer House

Fans

W

M

E

Air Sample Locations

NR PERC Field Maps 7-23-06.ppt

B


Field olfactometry results suggest shelterbelt vegetation may assist odor mitigation

Field olfactometry results suggest shelterbelt vegetation may assist odor mitigation.


Field olfactometry odor measurement

Field + Laboratory Olfactometry

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


Field olfactometry odor measurement

Field Olfactometry Indicates Shallow Disk Injection Reduces Dairy Manure Odors by 66%


Field olfactometry odor measurement

Lab Olfactometry Indicates Shallow Disk Injection Reduces Dairy Manure Odors by 58%


Field olfactometry odor measurement

Take-Home Point

Field olfactometry works!

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

Questions?


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