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

Patent · 01 January 2001

OSTI ID:873683

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

---

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 CORP
• 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

/205/204/
activated
activated carbon
adjacent
adsorbent
adsorptive
adsorptive material
bed
bed adjacent
bed material
burned
capable
carbon
charged
charged contaminant
charged species
collected
collecting
comprises
concentrated
concentrating
conducting
conducting electric
conductive
contaminant
contaminant species
current
disposable
disposable waste
disposed
drive
easily
easily removed
electrical
electrical current
electrically
electrically conductive
electrode
electrokinesis
electrokinetic
form
infused
material
materials
media
medium
method
method utilizes
mixture
moderately
porous
preferably
product
removal
removed
soil
solvent
solvent capable
sorbent material
sorptive material
species
specifically
stable
utilizes
waste
waste product
water