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Appendix A: Recoverable Materials
In order for a material to be recovered by the Geotech LDFS, it must have the following properties:
It must float on water.
Its specific gravity must be less than 1.0 and its kinematic viscosity less than 100SSU, for use with the
“light” oil filter cartridge, and between 100 and 400SSU for use with the “heavy” oil filter cartridge.
This means that short chained alcohols, carbon disulfide, chloroform, carbon tetrachloride and other dense
solvents which are heavier than water can only be recovered by using a Geotech Probe Scavenger. Solvents
that are lighter than water can be recovered with the filter cartridges that come with the LDFS. See
Section 7:
System Specifications
for more information.
The following will work with the average LDFS filters:
Alkanes:
e.g. pentanes, hexanes, heptanes, etc.
Alkenes:
e.g. 2-pentane, 3, 4-dimethyl-2-hexane, etc.
Aromatic hydrcarbons:
e.g. benzene, toluene, xylene, vinyl benzene, etc.
Alcohols with 4 or more carbon atoms:
e.g., nbutyalcohol, hexanol, octanol, etc.
Esters with 5 or more carbon atoms:
e.g. pentyl acetate.
Mixtures of the above:
fuel oils, gasoline, kerosene, mineral spirits, naphthas, etc.
Mono-alkyl halides:
e.g. ethylchloride, allyl chloride, etc.
The Aromatic LDFS must be used to recover materials containing aromatic hydrocarbons. It has epoxy/EFP
filter cartridge, FEP input hoses, modified floats, etc.
Materials requiring an Aromatic LDFS are marked with an asterisk (*) on the following list.
If the water in which the LDFS buoy is floating is very acidic or basic, a pH LDFS and buoy may be necessary.
This LDFS employs all the features of the aromatic unit, as well as resistance to extreme pH conditions. This
unit should generally be used when pH is lower than 5 or greater than 9 (requires specific information on the
water and materials to be recovered prior to final specification of components for the pH LDFS).
The following list is taken from a composite of materials deemed hazardous by:
1.
Environmental Protection Agency, Hazardous Substances, Federal Register, December 30, 1975
2.
Environmental Protection Agency, Contingency Plan, Region II for spills of Oil and Other Hazardous
Materials for Inland Waters of Region II.
3.
National Fire Protection Association, Fire Hazard Properties of Flammable Liquids, Gases and Volatile
Solids, NFPA #325M-1969.
Many other non-hazardous substances, not on this list, can also be recovered. Examples of
this are the variety of Edible Vegetable Oils. When in doubt, materials should be tested using
a Hydrocarbon Viscosity Test Kit.
Содержание Shallow Well Probe Scavenger
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