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Title: Electrochemical reduction of nitrate in the presence of an amide

Abstract

The electrochemical reduction of nitrates in aqueous solutions thereof in the presence of amides to gaseous nitrogen (N.sub.2) is described. Generally, electrochemical reduction of NO.sub.3 proceeds stepwise, from NO.sub.3 to N.sub.2, and subsequently in several consecutive steps to ammonia (NH.sub.3) as a final product. Addition of at least one amide to the solution being electrolyzed suppresses ammonia generation, since suitable amides react with NO.sub.2 to generate N.sub.2. This permits nitrate reduction to gaseous nitrogen to proceed by electrolysis. Suitable amides include urea, sulfamic acid, formamide, and acetamide.

Inventors:
 [1];  [1]
  1. Los Alamos, NM
Issue Date:
Research Org.:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
OSTI Identifier:
874658
Patent Number(s):
6436275
Assignee:
The Regents of the University of California (Los Alamos, NM)
Patent Classifications (CPCs):
C - CHEMISTRY C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE C02F - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
DOE Contract Number:  
W-7405-ENG-36
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
electrochemical; reduction; nitrate; presence; amide; nitrates; aqueous; solutions; amides; gaseous; nitrogen; nsub2; described; nosub3; proceeds; stepwise; subsequently; consecutive; steps; ammonia; nhsub3; final; product; addition; solution; electrolyzed; suppresses; generation; react; nosub2; generate; permits; proceed; electrolysis; urea; sulfamic; acid; formamide; acetamide; aqueous solution; gaseous nitrogen; chemical reduction; /205/

Citation Formats

Dziewinski, Jacek J, and Marczak, Stanislaw. Electrochemical reduction of nitrate in the presence of an amide. United States: N. p., 2002. Web.
Dziewinski, Jacek J, & Marczak, Stanislaw. Electrochemical reduction of nitrate in the presence of an amide. United States.
Dziewinski, Jacek J, and Marczak, Stanislaw. Tue . "Electrochemical reduction of nitrate in the presence of an amide". United States. https://www.osti.gov/servlets/purl/874658.
@article{osti_874658,
title = {Electrochemical reduction of nitrate in the presence of an amide},
author = {Dziewinski, Jacek J and Marczak, Stanislaw},
abstractNote = {The electrochemical reduction of nitrates in aqueous solutions thereof in the presence of amides to gaseous nitrogen (N.sub.2) is described. Generally, electrochemical reduction of NO.sub.3 proceeds stepwise, from NO.sub.3 to N.sub.2, and subsequently in several consecutive steps to ammonia (NH.sub.3) as a final product. Addition of at least one amide to the solution being electrolyzed suppresses ammonia generation, since suitable amides react with NO.sub.2 to generate N.sub.2. This permits nitrate reduction to gaseous nitrogen to proceed by electrolysis. Suitable amides include urea, sulfamic acid, formamide, and acetamide.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2002},
month = {1}
}

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Works referenced in this record:

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