Task 5.10 -- Value-added coproducts. Semi-annual report, January 1--June 30, 1995 Page: 6 of 11
This report is part of the collection entitled: Office of Scientific & Technical Information Technical Reports and was provided to Digital Library by the UNT Libraries Government Documents Department.
The following text was automatically extracted from the image on this page using optical character recognition software:
TASK 5.10 - VALUE-ADDED COPRODUCTS
Future economic growth in the coal industry can be realized with little growth in tonnage by
recognizing the importance of coal as a versatile raw material. Research focused on end-use products
is needed to integrate value-added coproducts with power generation (the coal refinery concept) and
to reduce escalating waste disposal costs by developing profit centers from recycling. Substantial
public benefits can be derived from by-products utilization through conservation of energy and
resources, reduction in gaseous emissions, and prevention of solid waste pollution. Continued
research on carbon products under the base Cooperative Agreement addresses the central question of
whether uniquely cost-effective activated carbons can be produced by taking advantage of the
inherently porous and reactive structure of low-rank coals (LRCs).
Carbon products will be evaluated in reference to their potential use in air toxics control and
The Energy & Environmental Research Center (EERC) designated value-added carbon as a
product line, with the goal of developing superior carbon products at competitive prices for a range of
applications, including SOQ/NOQ/air toxics adsorption, wastewater treatment, molecular sieves,
catalyst supports, metallurgical and foundry carbons, and clean-burning solid fuels using EERC
processes previously developed under the U.S. Department of Energy (DOE) Mild Gasification
program. The approach to be used in meeting specifications for marketable activated carbon products
is to develop a fundamental understanding of the extent and quality of the porous surface needed to
achieve rapid, high-capacity adsorption of pollutant gases or toxic metals and the processing
conditions needed to transform coal and other raw materials into products possessing these superior
The goal of this product line is to develop superior carbon products at competitive prices for a
range of applications, as listed above. The approach that the EERC will use in meeting specifications
for marketable carbon products will be to develop a more fundamental understanding of the carbon
properties that are required to achieve superior performance in various applications.
3.1 Steam Activation
Initial work in the char development project (4354) and earlier work at the EERC and
elsewhere showed that chars and activated carbons from North Dakota lignite and subbituminous
coals gave mediocre to poor iodine values. To complete this survey of coals, the carbonization and
steam activation (750*C for 30 min) of Velva lignite was performed. This lignite has a somewhat
different mineral content that leaves a soft ash. The iodine number for the 400 C char was 267,
which was similar to that found for other lignite chars, such as Gascoyne (283). The iodine number
Here’s what’s next.
This report can be searched. Note: Results may vary based on the legibility of text within the document.
Tools / Downloads
Get a copy of this page or view the extracted text.
Citing and Sharing
Basic information for referencing this web page. We also provide extended guidance on usage rights, references, copying or embedding.
Reference the current page of this Report.
Olson, E.S. & Aulich, T.R. Task 5.10 -- Value-added coproducts. Semi-annual report, January 1--June 30, 1995, report, August 1, 1997; Grand Forks, North Dakota. (https://digital.library.unt.edu/ark:/67531/metadc697593/m1/6/: accessed April 24, 2019), University of North Texas Libraries, Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.