Ernst Angela Schmidt

US Patent:

6537436, Mar 25, 2003

Filed:

May 31, 2001

Appl. No.:

09/871138

Inventors:

Ernst Schmidt - Las Vegas NV 89107
Michael E. Williams - Albany KY 42605
Brian M. Schmidt - Las Vegas NV 89108
James Schmidt - Las Vegas NV 89117
Erich Schmidt - Arvada CO 80003

International Classification:

C02F 140

US Classification:

204542, 204530, 204635, 204522, 204523

Abstract:

An electrodialysis treatment system utilizing a plurality of disparate layers of an electrodialysis cell stack for separation of components in liquid mixtures. The system for electrodialysis treatment for purification and deionizing liquids includes providing an operation of pretreatment by filtration for removal of inorganic and organic contaminants and generating a filtrate effluent. An adsorbing operation for adsorbing organic contaminants from the filtrate effluent of the pretreatment operation is provided by utilizing activated carbon adsorption and generating a liquid fraction. A deionizing operation for continuously purifying the liquid fraction is provided by utilizing an electrodialysis stack having a plurality of ion exchange membranes and separating gaskets for selectively removing contaminant ions from the liquid fraction of the adsorbing operation. The deionizing operation provides continuous purifying and deionizing of the liquid fraction to generate ultra-pure water or other purified liquid mixtures.

US Patent:

7501064, Mar 10, 2009

Filed:

Jan 6, 2005

Appl. No.:

11/030542

Inventors:

Ernst Schmidt - Knoxville TN, US
Alois F. Sferrazza - Knoxville TN, US
Michael E. Williams - Albany KY, US

Assignee:

EET - Harriman TN

International Classification:

B01D 61/00
B01D 63/00
C25D 17/00

US Classification:

210652, 210653, 2101952, 2102572, 210641, 204522, 204523, 204524, 204526, 204805

Abstract:

An integrated treatment system using electrodialysis and pressure-driven membranes for deionizing and decontaminating liquids to a near-pure quality for use or reuse in industrial or municipal operations. The integrated system includes steps of pre-filtering contaminated feed liquids blending the filtered liquids in preparation for treating the mixed liquids in parallel or sequential treatment steps utilizing nanofiltration or reverse osmosis, proceeded by or followed by an integrated electrodialysis treatment. A control means selectively directs mixed liquids to each of the treatment units for treatment in parallel or in series depending on the conductivity and residual contaminants in the mixed liquids. In comparison with nanofiltration or reverse osmosis only systems, or electrodialysis only systems, the integrated system provides improved efficiencies for treatment, requires less energy to operate, and reduces maintenance and capital costs.

US Patent:

62740202, Aug 14, 2001

Filed:

Apr 28, 2000

Appl. No.:

9/561049

Inventors:

Ernst Schmidt - Las Vegas NV
Michael E. Williams - Albany KY
Brian M. Schmidt - Las Vegas NV
James Schmidt - Las Vegas NV
Erich Schmidt - Arvada CO

International Classification:

B01D 6146

US Classification:

204636

Abstract:

An apparatus and system of operation of an electrodialysis membrane and gasket stack for separation of components in liquid mixtures is disclosed. The system of operation for purification and deionizing liquids includes an operation of pretreatment by filtration for removal of inorganic contaminants, includes an operation of adsorption for removing organic contaminants by activated carbon adsorption, and includes an operation of deionizing for removing ions from the effluent liquids. The deionizing operation includes an apparatus having an electrodialysis stack of a plurality of ion exchange membranes and separating gaskets for selectively removing contaminant ions. The combination of treatment operations and the deionizing operation provides a continuous operating system with minimized down-time and improved efficiencies over prior methods for purification of liquid mixtures.

US Patent:

20230014044, Jan 19, 2023

Filed:

Jul 12, 2022

Appl. No.:

17/862572

Inventors:

- Denver CO, US
Ernst Schmidt - Denver CO, US

Assignee:

Aqueous Resources LLC - Denver CO

International Classification:

B01D 61/58
B01D 61/46
B01D 61/02
B01D 15/36
B01D 69/02
B01D 61/42
B01D 11/04
B01D 61/56
C25B 1/16
C25B 15/08
C01D 15/02
C01D 15/08

Abstract:

A hybrid electro-pressure driven method for the recovery, purification, and concentration of lithium salts is described. A fractionating electrodialysis stack equipped with selective ion exchange membranes is s used to separate a lithium containing brine into a monovalent enriched fraction and a divalent enriched fraction. The monovalent enriched fraction is further processed to remove remaining impurities by use of pressure driven nanofiltration. An optional concentrating electrodialysis device may further concentrate the monovalent enriched fraction in lithium content. The method may be combined with a subsequent solvent extraction and electrolysis step to produce lithium hydroxide, a Li+ selective sorbent step for producing purified lithium chloride, or a Li+ selective sorbent and precipitative step to produce lithium carbonate.

US Patent:

20210094855, Apr 1, 2021

Filed:

Dec 8, 2020

Appl. No.:

17/115061

Inventors:

- Denver CO, US
Ernst Schmidt - Knoxville TN, US

Assignee:

NLB Water, LLC - Denver CO

International Classification:

C02F 9/00
B01D 61/04
B01D 61/58

Abstract:

An integrated, membrane-based process to produce purified water and conversion of salt to high value chemicals from oil and gas well produced water is described. A liquid stream including water and dissolved salt is flowed through pretreatment units and one or more desalination and concentration units which remove at least a portion of the water to form a brine enriched in dissolved salt. The purified high-density brine may be subjected to electrically-enforced salt dissociation techniques to produce chemicals from oil and gas produced water.

US Patent:

20210077954, Mar 18, 2021

Filed:

Sep 17, 2019

Appl. No.:

16/573481

Inventors:

- Pertuis, FR
Patrick W. Birdsall - Somerset NJ, US
Ernst Schmidt - Knoxville TN, US

Assignee:

Eurodia industrie SAS - Pertuis

International Classification:

B01D 61/54
B01D 61/44
B01D 61/14
B01D 61/02
B01D 61/58

Abstract:

Methods and apparatus for onsite generation of acid and base solutions for cleaning purposes through the utilization of bipolar membrane electrodialysis (BPED) are described. The methods eliminate the need to s store large quantities of acids and bases onsite or to transport the acid and base solutions to the cleaning site. A method of recycling substantially neutralized waste salt solutions into acid and base solutions for additional cleaning, thus decreasing the amount of waste salt discharged to the environment, also is described.

US Patent:

20190270660, Sep 5, 2019

Filed:

Feb 26, 2019

Appl. No.:

16/285317

Inventors:

- Jackson WY, US
Ernst Schmidt - Knoxville TN, US

Assignee:

NLB Water, LLC - Jackson WY

International Classification:

C02F 9/00

Abstract:

An integrated, membrane-based process to produce purified water and conversion of salt to high value chemicals from oil and gas well produced water is described. A liquid stream including water and dissolved salt is flowed through pretreatment units and one or more desalination and concentration units which remove at least a portion of the water to form a brine enriched in dissolved salt. The purified high-density brine may be subjected to electrically-enforced salt dissociation techniques to produce chemicals from oil and gas produced water.