Christos Christodoulatos

US Patent:

6818193, Nov 16, 2004

Filed:

Dec 15, 2000

Appl. No.:

09/738923

Inventors:

Christos Christodoulatos - Somerset NJ
George Korfiatis - Basking Ridge NJ
Richard Crowe - Hazlet NJ
Erich E Kunhardt - Hoboken NJ

Assignee:

Plasmasol Corporation - Hoboken NJ
Stevens Institute of Technology, LLC - Hoboken NJ

International Classification:

B01D 5300

US Classification:

423210, 2041573, 204159, 204164, 204177, 204179, 313231, 313410, 31511121, 31511181, 42218604, 423235, 4232421, 4232451, 423581

Abstract:

A plasma reactor including a first dielectric having at least one capillary defined therethrough, and a segmented electrode including a plurality of electrode segments, each electrode segment is disposed proximate an associated capillary. Each electrode segment may be formed in different shapes, for example, a pin, stud, washer, ring, or disk. The electrode segment may be hollow, solid, or made from a porous material. The reactor may include a second electrode and dielectric with the first and second dielectrics separated by a predetermined distance to form a channel therebetween into which the plasma exiting from the capillaries in the first dielectric is discharged. The fluid to be treated is passed through the channel and exposed to the plasma discharge. If the electrode segment is hollow or made of a porous material, then the fluid to be treated may be fed into the capillaries in the first dielectric and exposed therein to the maximum plasma density. The fluid to be treated may be exposed to the plasma discharge both in the capillaries as well as in the channel between the two dielectrics.

US Patent:

6919029, Jul 19, 2005

Filed:

Nov 26, 2002

Appl. No.:

10/304550

Inventors:

Xiaoguang Meng - Highland Park NJ, US
Mazakhir Dadachov - Mahopac NY, US
George P. Korfiatis - Basking Ridge NJ, US
Christos Christodoulatos - Basking Ridge NJ, US

Assignee:

Trustees of Stevens Institute of Technology - Hoboken NJ

International Classification:

C02F001/28
C01G023/047

US Classification:

210665, 210681, 423610

Abstract:

A method for producing a surface-activated crystalline titanium oxide product having a high adsorptive capacity and a high rate of adsorption with respect to dissolved contaminants includes the steps of preparing a titanium oxide precipitate from a mixture comprising a hydrolysable titanium compound and heating the precipitate at a temperature of less than 300 C. , without calcining the precipitate. Preferably, the titanium oxide product includes crystalline anatase having primary crystallite diameters in the range of 1-30 nm. The surface-activated crystalline titanium oxide product is used in methods to remove dissolved inorganic contaminants from dilute aqueous streams by suspending the product in an aqueous stream or by filtering an aqueous stream through a bed of the product. In another method, a hydrolysable titanium compound is added to an aqueous stream so that titanium oxides form as a co-precipitate with dissolved contaminants within a bed of particulate material.

US Patent:

7473369, Jan 6, 2009

Filed:

Jul 14, 2005

Appl. No.:

11/181681

Inventors:

Xiaoguang Meng - Highland Park NJ, US
Mazakhir Dadachov - Mahopac NY, US
George P. Korfiatis - Basking Ridge NJ, US
Christos Christodoulatos - Basking Ridge NJ, US
David J. Moll - Midland MI, US
Geofrey Paul Onifer - Sanford MI, US
Daniel B. Rice - Shepherd MI, US
Robert E. Reim - Midland MI, US
Fredrick W. Vance - Freeland MI, US
Harlan Robert Goltz - Midland MI, US
Chan Han - Midland MI, US
William I. Harris - Midland MI, US

Assignee:

The Trustees of the Stevens Institute of Technology - Hoboken NJ

International Classification:

C02F 1/28
C01G 23/047

US Classification:

210665, 210681, 423610

Abstract:

A method for removing dissolved contaminants from solution using a surface-activated crystalline titanium oxide product having a high adsorptive capacity and a high rate of adsorption with respect to dissolved contaminants, in particular, arsenate and arsenite. Preferably, the titanium oxide product includes crystalline anatase having primary crystallite diameters in the range of 1-30 nm. The surface-activated titanium oxide is combined with other filter media to further improve the removal of dissolved contaminants.

US Patent:

7497952, Mar 3, 2009

Filed:

Jul 7, 2005

Appl. No.:

11/176586

Inventors:

Xiaoguang Meng - Highland Park NJ, US
Mazakhir Dadachov - Mahopac NY, US
George P. Korfiatis - Basking Ridge NJ, US
Christos Christodoulatos - Basking Ridge NJ, US
David J. Moll - Midland MI, US
Geofrey Paul Onifer - Sanford MI, US
Daniel B. Rice - Shepherd MI, US
Robert E. Reim - Midland MI, US
Fredrick W. Vance - Freeland MI, US
Harlan Robert Goltz - Midland MI, US
Chan Han - Midland MI, US
William I. Harris - Midland MI, US

Assignee:

The Trustees of Stevens Institute of Technology - Hoboken NJ

International Classification:

C02F 1/28
C01G 23/047

US Classification:

210665, 210681, 423610

Abstract:

A method for removing dissolved contaminants from solution using a surface-activated crystalline titanium oxide product having a high adsorptive capacity and a high rate of adsorption with respect to dissolved contaminants, in particular, arsenate and arsenite. Preferably, the titanium oxide product includes crystalline anatase having primary crystallite diameters in the range of 1-30 nm. The surface-activated titanium oxide is combined with other filter media to further improve the removal of dissolved contaminants.

US Patent:

20020158012, Oct 31, 2002

Filed:

Oct 19, 2001

Appl. No.:

10/046345

Inventors:

Christos Christodoulatos - Somerset NJ, US
George Korfiatis - Basking Ridge NJ, US

International Classification:

C02F003/02

US Classification:

210/617000, 210/620000, 210/150000

Abstract:

An apparatus for wastewater treatment including at least one emobilized cell packed bed bioreactor and at least one membrane oxygenation module is provided. A system and method for treating wastewater is also provided.

US Patent:

20090321245, Dec 31, 2009

Filed:

May 22, 2009

Appl. No.:

12/471037

Inventors:

Vladimir Tarnovsky - Fair Lawn NJ, US
Milan Begliarbekov - Brooklyn NY, US
George Wohlrab - Secaucus NJ, US
Christos Christodoulatos - Basking Ridge NJ, US
Weidong Zhu - North Arlington NJ, US

International Classification:

B01J 19/08
H05F 3/06

US Classification:

204164, 422310

Abstract:

A method of stimulating chemical reactions within a fluid media uses a gas plasma ejected from a gas-buffered microhollow cathode discharge apparatus into the fluid media. The apparatus has an electrically-conductive housing with an electrode positioned therein such as to create air channels between the electrode and the housing. The electrode is electrically insulated from the housing except at a location near the plasma outlet. A DC voltage is applied across the electrode and housing to accelerate the plasma and eject it into the fluid media. In another aspect, the housing includes a cup portion and a conduit portion that are electrically isolated from each other. When a DC voltage is applied across the electrode and the conduit, the plasma is ejected and filamentous discharges occur between the cup and the conduit. Such multicavity coupled plasma discharges provide voltage amplification and DC pulses with rates in the nanosecond regime.

US Patent:

20100126944, May 27, 2010

Filed:

Oct 19, 2009

Appl. No.:

12/581480

Inventors:

Washington Braida - Edgewater NJ, US
Christos Christodoulatos - Basking Ridge NJ, US
Per Arienti - Allendale NJ, US
Gregory O'Connor - Rockaway Twp. NJ, US
Benjamin Smolinski - Rockaway NJ, US

International Classification:

C02F 1/68

US Classification:

210749

Abstract:

Organic nitro compounds, especially nitro aromatic compounds and nitramines, in water are degraded through contact with bimetallic particles comprising cores of zero-valent iron having discontinuous coatings of metallic copper on the surfaces thereof. Higher rates of degradation are achieved when the water has a pH in the range of about 3.5 to about 4.5, especially when acetic acid is present in the water.

US Patent:

20150129502, May 14, 2015

Filed:

Nov 14, 2014

Appl. No.:

14/541323

Inventors:

- Hoboken NJ, US
Jianfeng Zhang - Jersey City NJ, US
Christos Christodoulatos - Basking Ridge NJ, US
George Korfiatis - Basking Ridge NJ, US

Assignee:

THE TRUSTEES OF THE STEVENS INSTITUTE OF TECHNOLOGY - Hoboken NJ

International Classification:

C02F 1/28
B01J 20/32
B01J 20/20

US Classification:

210660, 252176, 427215

Abstract:

A graphene oxide adsorbent for removing dissolved substances from water or other liquids comprises a substrate having a coating layer of graphene oxide. The dissolved substances may be dissolved heavy metals, radioactive compounds, or other organic and inorganic substances. The substrates may be particulate substrates. The substrates may be adsorbents. The graphene oxide adsorbents can be beneficially used in filters and batch reactors, among other devices, for water treatment and for environmental remediation. In some embodiments, graphene oxide alone may be used as the graphene oxide adsorbent,