Process for removing sulfate anions from waste water

Nilsen, David N; Galvan, Gloria J; Hundley, Gary L; Wright, John B

Title: Process for removing sulfate anions from waste water

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Abstract

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.

Inventors:

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

Lebanon, OR
Albany, OR
Corvallis, OR

Issue Date:: 1997-01-01

Research Org.:: National Energy Technology Laboratory (NETL), Pittsburgh, PA, Morgantown, WV (United States)

OSTI Identifier:: 870780

Patent Number(s):: 5593593

Assignee:: United States of America (Washington, DC)

Patent Classifications (CPCs):: B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01D - SEPARATION

C - CHEMISTRY C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE C02F - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE

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B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01D - SEPARATION
B01D61/40 - using emulsion-type membranes

C - CHEMISTRY C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE C02F - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
C02F1/44 - by dialysis, osmosis or reverse osmosis {

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Resource Type:: Patent

Country of Publication:: United States

Language:: English

Subject:: 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; /210/

Citation Formats


                    Nilsen, David N, Galvan, Gloria J, Hundley, Gary L, and Wright, John B. Process for removing sulfate anions from waste water.  United States: N. p., 1997. 
        Web.

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                    Nilsen, David N, Galvan, Gloria J, Hundley, Gary L, & Wright, John B. Process for removing sulfate anions from waste water.  United States.

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                    Nilsen, David N, Galvan, Gloria J, Hundley, Gary L, and Wright, John B. Wed .  
        "Process for removing sulfate anions from waste water".  United States.  https://www.osti.gov/servlets/purl/870780.

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@article{osti_870780,

  title        = {Process for removing sulfate anions from waste water},

  author       = {Nilsen, David N and Galvan, Gloria J and Hundley, Gary L and Wright, John B},

  abstractNote = {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.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {1997},

  month        = {1}

}

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