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Title: Leonardite char adsorbents

Abstract

A process of preparing lignite (low rank) coal filter material, suitable for use in lieu of more expensive activated carbon filter materials, is disclosed. The process comprises size reducing Leonardite coal material to a suitable filtering effective size, and thereafter heating the size reduced Leonardite preferably to at least 750.degree. C. in the presence of a flow of an inert gas.

Inventors:
 [1]
  1. (Grand Forks, ND)
Issue Date:
Research Org.:
University of North Dakota
OSTI Identifier:
868970
Patent Number(s):
5254521
Assignee:
University of North Dakota Energy and Environment Research Center (Grand Forks, ND) NETL
DOE Contract Number:  
FC21-86MC10637
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
leonardite; char; adsorbents; process; preparing; lignite; rank; coal; filter; material; suitable; lieu; expensive; activated; carbon; materials; disclosed; comprises; size; reducing; filtering; effective; thereafter; heating; reduced; preferably; 750; degree; presence; flow; inert; gas; activated carbon; inert gas; process comprises; filter material; carbon filter; thereafter heating; coal material; coal filter; suitable filter; /502/95/423/

Citation Formats

Knudson, Curtis L. Leonardite char adsorbents. United States: N. p., 1993. Web.
Knudson, Curtis L. Leonardite char adsorbents. United States.
Knudson, Curtis L. Fri . "Leonardite char adsorbents". United States. https://www.osti.gov/servlets/purl/868970.
@article{osti_868970,
title = {Leonardite char adsorbents},
author = {Knudson, Curtis L.},
abstractNote = {A process of preparing lignite (low rank) coal filter material, suitable for use in lieu of more expensive activated carbon filter materials, is disclosed. The process comprises size reducing Leonardite coal material to a suitable filtering effective size, and thereafter heating the size reduced Leonardite preferably to at least 750.degree. C. in the presence of a flow of an inert gas.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1993},
month = {1}
}

Patent:

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