Use of coal combustion by-products for solidification/stabilization of hazardous wastes

PDF Version Also Available for Download.

Description

Five low-rank coal combustion fly ash samples extensively characterized in previous projects were used as a pool of candidate materials for potential use as waste stabilization agents. Two of these fly ash samples were selected because ettringite formed in the solid in long-term leaching experiments, and an associated reduction in leachate concentration of at least one trace element was noted for each sample. The stabilization experiments were designed to evaluate the removal of relatively high concentrations of boron and selenium from a simulated wastewater. Sulfate was added as one variable in order to determine if high concentrations of sulfate would ... continued below

Physical Description

6 p.

Creation Information

Hassett, D.J. & Pflughoeft-Hassett, D.F. May 1, 1997.

Context

This report is part of the collection entitled: Office of Scientific & Technical Information Technical Reports and was provided by UNT Libraries Government Documents Department to Digital Library, a digital repository hosted by the UNT Libraries. More information about this report can be viewed below.

Who

People and organizations associated with either the creation of this report or its content.

Sponsor

Publisher

Provided By

UNT Libraries Government Documents Department

Serving as both a federal and a state depository library, the UNT Libraries Government Documents Department maintains millions of items in a variety of formats. The department is a member of the FDLP Content Partnerships Program and an Affiliated Archive of the National Archives.

Contact Us

What

Descriptive information to help identify this report. Follow the links below to find similar items on the Digital Library.

Description

Five low-rank coal combustion fly ash samples extensively characterized in previous projects were used as a pool of candidate materials for potential use as waste stabilization agents. Two of these fly ash samples were selected because ettringite formed in the solid in long-term leaching experiments, and an associated reduction in leachate concentration of at least one trace element was noted for each sample. The stabilization experiments were designed to evaluate the removal of relatively high concentrations of boron and selenium from a simulated wastewater. Sulfate was added as one variable in order to determine if high concentrations of sulfate would impact the ability of the ettringite to include trace elements in its structure. The following conclusions can be drawn from the information obtained in this research: CCBs (coal combustion by-products) can be useful in the chemical fixation of potentially hazardous trace elements; indication of ettringite formation alone is not adequate for selecting a CCB for waste stabilization applications; moderate sulfate concentrations do not promote or inhibit trace element sorption; ettringite formation mechanisms may impact trace element fixation and need to be elucidated; laboratory demonstration of the CCB with the stabilization process being proposed is necessary to verify the efficacy of the material and process; and the final waste form must be evaluated prior to management according to the required regulatory procedures.

Physical Description

6 p.

Notes

OSTI as DE97052361

Source

  • Annual meeting of the North Dakota Academy of Science, Grand Forks, ND (United States), 24-25 Apr 1997

Language

Item Type

Identifier

Unique identifying numbers for this report in the Digital Library or other systems.

  • Other: DE97052361
  • Report No.: DOE/MC/30098--97/C0828
  • Report No.: CONF-9704108--2
  • Grant Number: FC21-93MC30098
  • DOI: 10.2172/491468 | External Link
  • Office of Scientific & Technical Information Report Number: 491468
  • Archival Resource Key: ark:/67531/metadc675987

Collections

This report is part of the following collection of related materials.

Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

What responsibilities do I have when using this report?

When

Dates and time periods associated with this report.

Creation Date

  • May 1, 1997

Added to The UNT Digital Library

  • July 25, 2015, 2:21 a.m.

Description Last Updated

  • May 2, 2016, 1:32 p.m.

Usage Statistics

When was this report last used?

Yesterday: 0
Past 30 days: 0
Total Uses: 6

Interact With This Report

Here are some suggestions for what to do next.

Start Reading

PDF Version Also Available for Download.

International Image Interoperability Framework

IIF Logo

We support the IIIF Presentation API

Hassett, D.J. & Pflughoeft-Hassett, D.F. Use of coal combustion by-products for solidification/stabilization of hazardous wastes, report, May 1, 1997; Grand Forks, North Dakota. (digital.library.unt.edu/ark:/67531/metadc675987/: accessed June 22, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.