Electrokinetic removal of charged contaminant species from soil and other media using moderately conductive adsorptive materials

Patent · Mon Jan 01 00:00:00 EST 2001

OSTI ID:873683

Lindgren, Eric R ^[1]; Mattson, Earl D ^[2]

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1. Albuquerque, NM
2. Idaho Falls, ID

Method for collecting and concentrating charged species, specifically, contaminant species in a medium, preferably soil. The method utilizes electrokinesis to drive contaminant species into and through a bed adjacent to a drive electrode. The bed comprises a moderately electrically conductive adsorbent material which is porous and is infused with water or other solvent capable of conducting electrical current. The bed material, preferably activated carbon, is easily removed and disposed of. Preferably, where activated carbon is used, after contaminant species are collected and concentrated, the mixture of activated carbon and contaminant species is removed and burned to form a stable and easily disposable waste product.

• Research Organization: Sandia National Laboratories (SNL), Albuquerque, NM, and Livermore, CA (United States)
• DOE Contract Number: AC04-94AL85000
• Assignee: Sandia Corporation (Albuquerque, NM)
• Patent Number(s): US 6221237
• OSTI ID: 873683
• Country of Publication: United States
• Language: English

Related Subjects

electrokinetic
removal
charged
contaminant
species
soil
media
moderately
conductive
adsorptive
materials
method
collecting
concentrating
specifically
medium
preferably
utilizes
electrokinesis
drive
bed
adjacent
electrode
comprises
electrically
adsorbent
material
porous
infused
water
solvent
capable
conducting
electrical
current
activated
carbon
easily
removed
disposed
collected
concentrated
mixture
burned
form
stable
disposable
waste
product
charged species
waste product
solvent capable
bed material
method utilizes
easily removed
activated carbon
electrically conductive
electrical current
sorbent material
contaminant species
adsorptive material
sorptive material
conducting electric
charged contaminant
bed adjacent
disposable waste
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