Exhaust emissions usually containsignificant amounts of variousodorous components. The perceived odour is due to theeffect...
Therefore, it is logical that an odorous gas samplebe characterised in two ways.1. Analytical expression, wherebythe compo...
GC/MS Analysisreveals the compositionof the odorous mix butwill not be able todetermine the humanresponse.
Olfactometry reveals thehuman response to aparticular odour mix butcannot address itschemistry.
There are a number of products on the market claiming thatodour emissions can be „neutralised‟ by the addition of certainc...
What do the suppliers of these products claim? “we do not mask, we neutralise!” “encapsulation & absorption” “unique blend...
Based on these vague and grandioseclaims, the facility operator wouldmostly out of desperation due topressure from regulat...
Quite a few dollars later, itdoesn‟t take long for theoperator to feel disappointmentand then anger that the “quickfix” do...
What are these productsand how do we distinguishbetween them? Do they work, and if not,why are they used withsuch regulari...
Essential Oil Blend                  Essential Oils, terpene &                   emulsifier formulationsthe products      ...
Surfactant Inducedthe products                     Absorption Technology                (Site Specific Formulations –     ...
Laboratory                           investigationA simulated stack and odorous air generator was setup at the ANSTO Labor...
Manifold inserted into „stack‟                               – raw odour is thenPermeation         Raw Odour   challenged ...
Sampleiscollected Odour generating device (Permeation)                       „Raw Odour‟ is pumped                       i...
Spray system is turned on and theSample            nozzles spray the odour neutraliseriscollected            Odour neutral...
Synthetic Sewage Odours                                   78% Removal With Water aloneOlfactometry (ODU)                  ...
Sulphur Dioxide – Initial                                        85% Reduction with water alone                           ...
Sulphur Dioxide – 24 Hrs Later                                     25% Reduction of SO2 after 24 hrs in Tedlar bag        ...
Sulphur Dioxide – Comparison                                            SO2 Levels increased 25% 24 hrs                   ...
On-Site Investigations –Sewage Treatment Plant –        Tuncurry, Forster  The misting system remained  off and a section ...
On-site: Sewage Treatment Plant                                     83% reduction with water alone                        ...
Foundry (Ferrous)                                                   Cooling LineTo nozzles                                ...
Foundry (Ferrous)            8.5% Reduction with Essential Oil                                                3.2%        ...
Poultry Shed                               1. Windbreak erected around                               exhaust fans (Side Vi...
Poultry Shed         62% Reduction with                    1.8%         Essential Oil Blend                   Reduction   ...
Tyre Manufacturing
Tyre Manufacturing    Emissions from StackSampling Port   Treatment                               Samples sent to Laboratory
Tyre Manufacturing         22% Reduction with Essential Oil Blends                 62% Reduction with SIAT                ...
Rubber Products ManufacturingRaw Odour Sampling           Raw Odour Challenged with                             Odour Neut...
Rubber Products Manufacturing                                                     X                     X
Application EquipmentCompressed Air System
Application EquipmentHigh Pressure System >1000 psi
Application EquipmentLow Pressure System 250 psi
Choice of application equipment and nozzle is integralto the performance of the odour neutralising agentApplication of odo...
Outcome:Masking Agents are not suitable for use in industrial odourcontrol applications at any time.  Masking Agents have ...
Outcome:Essential Oil Blends have succeeded in some instances buttheir effects are highly inconsistent  “Essential Oil Ble...
The bulk of “odour neutralisers” assessed over theyears have a high concentration of essential oils.  The SIAT products ha...
Some companies professing to be“odour control specialists” andenvironmentally friendly are usingessential oils as a “techn...
Although the results showed some reduction andsome success when using Essential Oil Blends, it mayfinally be about time to...
The research suggests that a cleaner morescientific approach is via the use of aroma andnature identical chemistries and s...
17 years of research into these                          products have revealed the                          following:The...
17 years of research into these                                  products have revealed the                               ...
The only “cure-all” odourcontrol product
Anotec Industrial Odour Control Course
Anotec Industrial Odour Control Course
Anotec Industrial Odour Control Course
Anotec Industrial Odour Control Course
Anotec Industrial Odour Control Course
Anotec Industrial Odour Control Course
Anotec Industrial Odour Control Course
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Anotec Industrial Odour Control Course

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"Unmasking Odour Neutralisers" - Industrial Odour Control Course - CASANZ.
Presented by Victoria Zavras in Western Australia

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Transcript of "Anotec Industrial Odour Control Course"

  1. 1. Exhaust emissions usually containsignificant amounts of variousodorous components. The perceived odour is due to theeffect of all compounds in the mixtureand depends upon the concentrationand odorous qualities of thecomponent compounds.
  2. 2. Therefore, it is logical that an odorous gas samplebe characterised in two ways.1. Analytical expression, wherebythe components are identified andtheir concentrations are measured2. Sensory expression, where thehuman response to the odorousmix is measured.
  3. 3. GC/MS Analysisreveals the compositionof the odorous mix butwill not be able todetermine the humanresponse.
  4. 4. Olfactometry reveals thehuman response to aparticular odour mix butcannot address itschemistry.
  5. 5. There are a number of products on the market claiming thatodour emissions can be „neutralised‟ by the addition of certaincomponents into the air stream Traditionally, these types of products are split into twobroad categories Odour Masking Neutralisers Agents
  6. 6. What do the suppliers of these products claim? “we do not mask, we neutralise!” “encapsulation & absorption” “unique blend of essential oils” “treat all odours with one spray!” “CHEAP AS CHIPS! ”
  7. 7. Based on these vague and grandioseclaims, the facility operator wouldmostly out of desperation due topressure from regulators and thecommunity purchase these products.Is it any wonder, then, that FacilityOperators opt for the ‟QUICK FIX‟and „cheap as chips‟ solution?
  8. 8. Quite a few dollars later, itdoesn‟t take long for theoperator to feel disappointmentand then anger that the “quickfix” doesn‟t really work.Herein a vicious cycle begins
  9. 9. What are these productsand how do we distinguishbetween them? Do they work, and if not,why are they used withsuch regularity?
  10. 10. Essential Oil Blend Essential Oils, terpene & emulsifier formulationsthe products Surfactant Induced Absorption Technology Various types of surfactants & blends thereof (Odourless) Surfactant Induced Absorption Technology + Essential Oil Blend Formulation based on a combination of the first two above
  11. 11. Surfactant Inducedthe products Absorption Technology (Site Specific Formulations – fragranced & odourless) Various types of surfactants & blends thereof Masking Agent Aromatic oils, perfumes & fragrances (mainly bubble-gum, musk, citrus and rose types)
  12. 12. Laboratory investigationA simulated stack and odorous air generator was setup at the ANSTO Laboratories at Lucas Heights. Airsamples were subsequently transported to the Centrefor Wastewater Treatment‟s Odour ResearchLaboratory at the University of New South Wales.
  13. 13. Manifold inserted into „stack‟ – raw odour is thenPermeation Raw Odour challenged with sprayed SampleDevice „Stack‟ Collected products collection
  14. 14. Sampleiscollected Odour generating device (Permeation) „Raw Odour‟ is pumped into the „stack‟
  15. 15. Spray system is turned on and theSample nozzles spray the odour neutraliseriscollected Odour neutraliser is introduced into the stack 5 mins after the Raw Odour Raw odour is introduced into the stack
  16. 16. Synthetic Sewage Odours 78% Removal With Water aloneOlfactometry (ODU) 90% Removal With SIAT (Odourless) 66% Removal With SIAT + Essential Oil Blend
  17. 17. Sulphur Dioxide – Initial 85% Reduction with water alone 95% Reduction with SIAT (Odourless)Dynamic Olfactometry (ODU) 93% Reduction with SIAT & Essential Oil Blend 87% Reduction with Masking Agent
  18. 18. Sulphur Dioxide – 24 Hrs Later 25% Reduction of SO2 after 24 hrs in Tedlar bag 73% Reduction with Water aloneDynamic Olfactometry (ODU) 95% Reduction with SIAT 95% Reduction with SIAT + Essential Oil Blend 78% Reduction With Masking Agent
  19. 19. Sulphur Dioxide – Comparison SO2 Levels increased 25% 24 hrs after treatment SO2 Levels remained the same 24 Hrs after treatmentDynamic Olfactometry (ODU) SO2 Levels decreased 33% 24 Hrs after treatment SO2 Levels Increased 39% 24 Hrs after treatment
  20. 20. On-Site Investigations –Sewage Treatment Plant – Tuncurry, Forster The misting system remained off and a section of the inlet works were covered - Raw Odour samples were collected Exposed inlet works – existing misting system already using a odour neutralising agent The misting system was turned off and Raw Odour samples were collected
  21. 21. On-site: Sewage Treatment Plant 83% reduction with water alone 88% reduction with Essential Oil BlendDynamic Olfactometry (ODU) 83% Reduction With SIAT & Essential Oil Blend 18% Reduction with Masking Agent
  22. 22. Foundry (Ferrous) Cooling LineTo nozzles Stack Cherry picker was used Control unit & to reach exit of stack pump Sampling point 3 #1.5 nozzles installed in stack Solution tank 700 mm stack diameter Fan Cooling mould(s) Odour control application device
  23. 23. Foundry (Ferrous) 8.5% Reduction with Essential Oil 3.2% Blend Reduction with Masking 60.6% Reduction Agent with SIAT & Essential Oil Blend 99.3% 97.9% Reduction Reduction with Site with SIAT Specific SIAT
  24. 24. Poultry Shed 1. Windbreak erected around exhaust fans (Side View) Row of atomising nozzles Dust & odour 3. Top View Exhaust 2. Exhaust fansDust & odour Nozzles 2a. Removal windbreak wall Sampling point
  25. 25. Poultry Shed 62% Reduction with 1.8% Essential Oil Blend Reduction with 79% Reduction Masking with SIAT Agent 73& Reduction with SIAT + Essential Oil Blend 97.8% Reduction with Site Specific Formula
  26. 26. Tyre Manufacturing
  27. 27. Tyre Manufacturing Emissions from StackSampling Port Treatment Samples sent to Laboratory
  28. 28. Tyre Manufacturing 22% Reduction with Essential Oil Blends 62% Reduction with SIAT 65% Reduction with SIAT & 2% Essential Oil Reduction Blend with 81% Masking Reduction Agent with SS. SIAT
  29. 29. Rubber Products ManufacturingRaw Odour Sampling Raw Odour Challenged with Odour Neutralisers
  30. 30. Rubber Products Manufacturing  X X
  31. 31. Application EquipmentCompressed Air System
  32. 32. Application EquipmentHigh Pressure System >1000 psi
  33. 33. Application EquipmentLow Pressure System 250 psi
  34. 34. Choice of application equipment and nozzle is integralto the performance of the odour neutralising agentApplication of odour neutralisers should be limited toatomisation. Odour Neutralising agents fail toperform in the liquid phase, and in most instances willnot work in scrubbers.
  35. 35. Outcome:Masking Agents are not suitable for use in industrial odourcontrol applications at any time. Masking Agents have little or no effect on complex odourmixtures. Olfactometry revealed that masking agents to donot have an “additive” effect on the malodour beingchallenged. Masking Agents are ideal for low level, simple andtransient odours – such as in a hotel lobby or lavatory Masking Agents consistently failed to perform in “real-life”.
  36. 36. Outcome:Essential Oil Blends have succeeded in some instances buttheir effects are highly inconsistent “Essential Oil Blends” may assist in the reduction ofodours in some instances. Essential Oil Blends so not show any consistency inremoval efficiency and their application can best bedescribed as “luck of the draw” Some Essential Oil Blends have resulted in a significantreduction on sewage odours – provided the odours are fromdomestic sewage
  37. 37. The bulk of “odour neutralisers” assessed over theyears have a high concentration of essential oils. The SIAT products have some low concentrationoils which contain functional groups and surfaceactive agents
  38. 38. Some companies professing to be“odour control specialists” andenvironmentally friendly are usingessential oils as a “technology” to treatmalodours. Our research has revealedthat the use of essential oils is not veryenvironmentally friendly when youconsider that trees need to be choppeddown, squeezing out the oil and usingthis oil to reduce odours at an industrialsite.
  39. 39. Although the results showed some reduction andsome success when using Essential Oil Blends, it mayfinally be about time to move away from these types ofproducts. For example, if we look at rosemary oil, thechemical make up includes components such asgeraniol, citronella and pine. Different batches of oilsfrom different parts of the world have these componentsat different concentrations. There is no consistency inthe raw product being used by formulators.
  40. 40. The research suggests that a cleaner morescientific approach is via the use of aroma andnature identical chemistries and surfactantbased technology.The components in the mix seem to be reliableand there was no evidence to suggest thatapplication of such products „mask‟ themalodour.This is very heartening and requires furtherstudy.
  41. 41. 17 years of research into these products have revealed the following:The difference between odour neutralisingagents and masking agents lies in the FACTthat some Odour Neutralising Agents do work –albeit inconsistently depending on the odoursourceMasking Agents are NOT Odour NeutralisingAgents and can best be described as „creativeperfumes‟.
  42. 42. 17 years of research into these products have revealed the following: Odour Neutralising Agents can safely be considered inany odour control application – BUT should be the last onthe operator‟s list Odour Neutralising Agents are not suitable as a standalone treatment for industrial odour control applications. There is no such thing as “broad-spectrum” or a “cure-all” odour neutralising agent.
  43. 43. The only “cure-all” odourcontrol product

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