Process for removing sulfate anions from waste water

Patent · Wed Jan 01 00:00:00 EST 1997

OSTI ID:870780

Nilsen, David N ^[1]; Galvan, Gloria J ^[2]; Hundley, Gary L ^[3]; Wright, John B ^[2]

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1. Lebanon, OR
2. Albany, OR
3. Corvallis, OR

A liquid emulsion membrane process for removing sulfate anions from waste water is disclosed. The liquid emulsion membrane process includes the steps of: (a) providing a liquid emulsion formed from an aqueous strip solution and an organic phase that contains an extractant capable of removing sulfate anions from waste water; (b) dispersing the liquid emulsion in globule form into a quantity of waste water containing sulfate anions to allow the organic phase in each globule of the emulsion to extract and absorb sulfate anions from the waste water and (c) separating the emulsion including its organic phase and absorbed sulfate anions from the waste water to provide waste water containing substantially no sulfate anions.

• Research Organization: National Energy Technology Laboratory (NETL), Pittsburgh, PA, Morgantown, WV (United States)
• Assignee: United States of America (Washington, DC)
• Patent Number(s): US 5593593
• OSTI ID: 870780
• Country of Publication: United States
• Language: English

Related Subjects

process
removing
sulfate
anions
waste
water
liquid
emulsion
membrane
disclosed
steps
providing
formed
aqueous
strip
solution
organic
phase
contains
extractant
capable
dispersing
globule
form
quantity
containing
allow
extract
absorb
separating
including
absorbed
provide
substantially
sulfate anions
waste water
organic phase
water containing
removing sulfate
membrane process
aqueous strip
liquid emulsion
strip solution
containing substantially
emulsion formed
emulsion membrane
containing substantial
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