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Title: Reversible photodeposition and dissolution of metal ions

Abstract

A cyclic photocatalytic process for treating waste water containing metal and organic contaminants. In one embodiment of the method, metal ions are photoreduced onto the photocatalyst and the metal concentrated by resolubilization in a smaller volume. In another embodiment of the method, contaminant organics are first oxidized, then metal ions removed by photoreductive deposition. The present invention allows the photocatalyst to be recycled until nearly complete removal of metal ions and organic contaminants is achieved.

Inventors:
 [1];  [2];  [1]
  1. (Boulder, CO)
  2. (Golden, CO)
Issue Date:
Research Org.:
Sandia National Laboratories (SNL), Albuquerque, NM, and Livermore, CA
OSTI Identifier:
869403
Patent Number(s):
5332508
Assignee:
Regents of University of Colorado (Boulder, CO) SNL
DOE Contract Number:  
AC04-76
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
reversible; photodeposition; dissolution; metal; cyclic; photocatalytic; process; treating; waste; water; containing; organic; contaminants; embodiment; method; photoreduced; photocatalyst; concentrated; resolubilization; volume; contaminant; organics; oxidized; removed; photoreductive; deposition; allows; recycled; nearly; complete; removal; achieved; catalytic process; waste water; organic contaminant; water containing; organic contaminants; containing metal; treating waste; complete removal; metal concentrate; /210/204/

Citation Formats

Foster, Nancy S., Koval, Carl A., and Noble, Richard D. Reversible photodeposition and dissolution of metal ions. United States: N. p., 1994. Web.
Foster, Nancy S., Koval, Carl A., & Noble, Richard D. Reversible photodeposition and dissolution of metal ions. United States.
Foster, Nancy S., Koval, Carl A., and Noble, Richard D. Sat . "Reversible photodeposition and dissolution of metal ions". United States. https://www.osti.gov/servlets/purl/869403.
@article{osti_869403,
title = {Reversible photodeposition and dissolution of metal ions},
author = {Foster, Nancy S. and Koval, Carl A. and Noble, Richard D.},
abstractNote = {A cyclic photocatalytic process for treating waste water containing metal and organic contaminants. In one embodiment of the method, metal ions are photoreduced onto the photocatalyst and the metal concentrated by resolubilization in a smaller volume. In another embodiment of the method, contaminant organics are first oxidized, then metal ions removed by photoreductive deposition. The present invention allows the photocatalyst to be recycled until nearly complete removal of metal ions and organic contaminants is achieved.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1994},
month = {1}
}

Patent:

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