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Title: Metal regeneration of iron chelates in nitric oxide scrubbing

Abstract

The present invention relates to a process of using metal particles to reduce NO to NH.sub.3. More specifically, the invention concerns an improved process to regenerate iron (II) (CHELATE) by reduction of iron (II) (CHELATE) (NO) complex, which process comprises: a) contacting an aqueous solution containing iron (II) (CHELATE) (NO) with metal particles at between about 20.degree. and 90.degree. C. to reduce NO present, produce ammonia or an ammonium ion, and produce free iron (II) (CHELATE) at a pH of between about 3 and 8. The process is useful to remove NO from flue gas and reduce pollution.

Inventors:
 [1];  [2];  [3]
  1. (El Cerrito, CA)
  2. (Oakland, CA)
  3. (Berkeley, CA)
Issue Date:
Research Org.:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA
Sponsoring Org.:
USDOE
OSTI Identifier:
871100
Patent Number(s):
5658545
Assignee:
Regents of California (Oakland, CA) OAK
DOE Contract Number:  
AC03-76SF00098
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
metal; regeneration; iron; chelates; nitric; oxide; scrubbing; relates; process; particles; reduce; nh; specifically; concerns; improved; regenerate; ii; chelate; reduction; complex; comprises; contacting; aqueous; solution; containing; 20; degree; 90; produce; ammonia; ammonium; free; ph; useful; remove; flue; gas; pollution; metal particle; improved process; metal particles; solution containing; aqueous solution; process comprises; flue gas; nitric oxide; containing iron; iron chelate; /423/

Citation Formats

Chang, Shih-Ger, Littlejohn, David, and Shi, Yao. Metal regeneration of iron chelates in nitric oxide scrubbing. United States: N. p., 1997. Web.
Chang, Shih-Ger, Littlejohn, David, & Shi, Yao. Metal regeneration of iron chelates in nitric oxide scrubbing. United States.
Chang, Shih-Ger, Littlejohn, David, and Shi, Yao. Tue . "Metal regeneration of iron chelates in nitric oxide scrubbing". United States. https://www.osti.gov/servlets/purl/871100.
@article{osti_871100,
title = {Metal regeneration of iron chelates in nitric oxide scrubbing},
author = {Chang, Shih-Ger and Littlejohn, David and Shi, Yao},
abstractNote = {The present invention relates to a process of using metal particles to reduce NO to NH.sub.3. More specifically, the invention concerns an improved process to regenerate iron (II) (CHELATE) by reduction of iron (II) (CHELATE) (NO) complex, which process comprises: a) contacting an aqueous solution containing iron (II) (CHELATE) (NO) with metal particles at between about 20.degree. and 90.degree. C. to reduce NO present, produce ammonia or an ammonium ion, and produce free iron (II) (CHELATE) at a pH of between about 3 and 8. The process is useful to remove NO from flue gas and reduce pollution.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1997},
month = {8}
}

Patent:

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