By: Jennifer Schaffer
This presentation is the property of its rightful owner.
Sponsored Links
1 / 40

By: Jennifer Schaffer [email protected] PowerPoint PPT Presentation


  • 43 Views
  • Uploaded on
  • Presentation posted in: General

By: Jennifer Schaffer [email protected] LNAPL (Light Non-Aqueous Phase Liquids). Courtesy of U.S. Geological Survey. 3-D Image of LNAPL Plume. Leaks & Spills: 1992-2002 Sampling of Incidents at Shell Group Companies & Joint Ventures*.

Download Presentation

By: Jennifer Schaffer [email protected]

An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

Presentation Transcript


By jennifer schaffer jenniferscha gmail com

By: Jennifer Schaffer

[email protected]


Lnapl light non aqueous phase liquids

LNAPL(Light Non-Aqueous Phase Liquids)

Courtesy of U.S. Geological Survey


3 d image of lnapl plume

3-D Image of LNAPL Plume


By jennifer schaffer jenniferscha gmail com

Leaks & Spills: 1992-2002

Sampling of Incidents at Shell Group Companies & Joint Ventures*

Derived from: http://www.shellfacts.com/downloads/Leaks&Spills2.pdf


Prevalence of gasoline spills

Prevalence of Gasoline Spills

  • 8 sites on the NPL

  • According to National Response Center, have been 7,957 gasoline spills on land since 1990.

  • Gas spills were primarily unreported until recent history.

    • There were no formal reporting requirements prior to 1970.

    • From 1970-1980, only spills that reached navigable waters had to be reported


By jennifer schaffer jenniferscha gmail com

  • U.S. v. Apex Oil Co., Inc., 579 F.3d 734 (7th Cir. 2009)


Sugar creek missouri

Sugar Creek, Missouri

http://www.krohm.com/sugarcrk/index.htm


Methods used for cleanup

Methods Used for Cleanup

  • Biofiltration

  • Scrubbers

  • Carbon Absorbtion

  • Bioremediation - microbials

  • Free product recovery – Skimming systems

  • Free product recovery – water table depression

  • Vapor Extraction

  • Dual Phase Recovery

  • Pumps


Bioremediation

Bioremediation


Scrubbers

Scrubbers


Carbon absorption

Carbon Absorption


Skimming

Skimming


Water table depression

Water Table Depression


Vapor extraction

Vapor Extraction


Dual phase recovery

Dual Phase Recovery


Pumping

Pumping


By jennifer schaffer jenniferscha gmail com

Circulation

pump


By jennifer schaffer jenniferscha gmail com

Solar

powered

pump


Enhanced methods

Enhanced Methods

  • Steam

  • Surfactants

  • Phased soil heating

  • Chemical oxidation

  • Hot and cold water floods


Steam

Steam

This process requires large facilities and operations as well as significant time and money.


Surfactants

Surfactants

Wetting agents that lower the surface tension of a liquid, allowing easier spreading, and lower the interfacial tension between the two liquids. These are already used in green cleaning products.


Phased soil heating

Phased Soil Heating


Chemical oxidation

Chemical Oxidation


Ways this gasoline could be used

Ways this Gasoline Could be Used

  • Marine Uses

  • Aviation Fuel

  • South America, Asia, Eastern Europe and the Middle East – automotive

  • Racing cars

  • Farm equipment

  • Industrial uses

  • Energy Production


By jennifer schaffer jenniferscha gmail com

Patent, 1935

issued to

F.E. Neff, Jr.


By jennifer schaffer jenniferscha gmail com

Patent for using ammonium phosphate to clean lead from gasoline/oil products


By jennifer schaffer jenniferscha gmail com

http://www.mckenziecorp.com/hydrocarbon.htm


By jennifer schaffer jenniferscha gmail com

Carbon

Scrubbers


So why are more companies not recycling reusing the gas

So, why are more companies not recycling/reusing the gas?

  • Cost – is it worth the costs?

    • How do the costs compare?

    • Are there “hidden costs” to recovery?

    • Diminishing Returns from recovery

  • Potentially liability

    • Ramifications of claiming the gasoline

    • Property dispute issues


Hydraulic recovery of the oil poses difficulty

Hydraulic Recovery of the Oil Poses Difficulty

  • Residual saturation trapped by capillary forces

  • Heterogeneity of the soil

  • Conductivity of the LNAPL phase


By jennifer schaffer jenniferscha gmail com

  • What could be done to encourage recycling?

    • Legislation which encourages and or compels recovery

    • Legislation which removes liability issues

    • Legislation which resolves property ownership issues

  • Should it be done?

    • Would we be trading one pollution for another?

    • Should there be limits or regulations on how recovered gasoline can be used/sold?


  • Login