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Title: Method for eliminating gas blocking in electrokinetic pumping systems

Abstract

A method for eliminating gas bubble blockage of current flow during operation of an electrokinetic pump. By making use of the ability to modify the surface charge on the porous dielectric medium used in electrokinetic pumps, it becomes possible to place electrodes away from the pressurized region of the electrokinetic pump. While gas is still generated at the electrodes they are situated such that the generated gas can escape into a larger buffer reservoir and not into the high pressure region of the pump where the gas bubbles can interrupt current flow. Various combinations of porous dielectric materials and ionic conductors can be used to create pumps that have desirable electrical, material handling, and flow attributes.

Inventors:
 [1];  [1];  [2]
  1. (Livermore, CA)
  2. (Oakland, CA)
Issue Date:
Research Org.:
SANDIA CORP
OSTI Identifier:
873981
Patent Number(s):
6287440
Application Number:
09/336,535
Assignee:
Sandia Corporation (Albuquerque, NM) SNL
DOE Contract Number:  
AC04- 94AL85000
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
method; eliminating; gas; blocking; electrokinetic; pumping; systems; bubble; blockage; current; flow; operation; pump; ability; modify; surface; charge; porous; dielectric; medium; pumps; electrodes; pressurized; region; generated; situated; escape; larger; buffer; reservoir; pressure; bubbles; interrupt; various; combinations; materials; ionic; conductors; create; desirable; electrical; material; handling; attributes; surface charge; gas bubbles; electrokinetic pump; material handling; pressure region; dielectric materials; current flow; dielectric material; gas bubble; various combinations; electrokinetic pumping; pumping systems; ionic conductors; eliminating gas; /204/

Citation Formats

Arnold, Don W., Paul, Phillip H., and Schoeniger, Joseph S. Method for eliminating gas blocking in electrokinetic pumping systems. United States: N. p., 2001. Web.
Arnold, Don W., Paul, Phillip H., & Schoeniger, Joseph S. Method for eliminating gas blocking in electrokinetic pumping systems. United States.
Arnold, Don W., Paul, Phillip H., and Schoeniger, Joseph S. Tue . "Method for eliminating gas blocking in electrokinetic pumping systems". United States. https://www.osti.gov/servlets/purl/873981.
@article{osti_873981,
title = {Method for eliminating gas blocking in electrokinetic pumping systems},
author = {Arnold, Don W. and Paul, Phillip H. and Schoeniger, Joseph S.},
abstractNote = {A method for eliminating gas bubble blockage of current flow during operation of an electrokinetic pump. By making use of the ability to modify the surface charge on the porous dielectric medium used in electrokinetic pumps, it becomes possible to place electrodes away from the pressurized region of the electrokinetic pump. While gas is still generated at the electrodes they are situated such that the generated gas can escape into a larger buffer reservoir and not into the high pressure region of the pump where the gas bubbles can interrupt current flow. Various combinations of porous dielectric materials and ionic conductors can be used to create pumps that have desirable electrical, material handling, and flow attributes.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2001},
month = {9}
}

Patent:

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