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Environmental Technology Listing
Title of Listing:
BIOREMEDIATION
Category:
Treatment Technologies
Subcategory:
 *Soil, All Listings
Media:
Soil
Contaminants:
TNT
Web Site:
Email:
Technology Description:

A bench-scale bioremediation technology using Phanerochaete chrysosporium (white rot fungus) has been developed to degrade chlorinated compounds. The technology is tested using damp, corrugated cardboard boxes as the growth medium for the fungus. The corrugated cardboard provides the fungus with oxygen and nutrients. The experiments indicate that the cellulase provided by the fungus degrades the chlorinated compounds present in the media. One problem encountered during bench-scale experimentation is the time it takes to complete degradation. It is believed that with time the cellulase produced by white rot fungus will begin to degrade the cellulose present in the cardboard before it can degrade the chlorinated compounds in the media. Experimentation is continuing to determine how to deal with this possible problem. 2,4,6 trinitrotoluene (TNT) waste for munitions productions may also be treated using white rot fungus.

          Bench-scale experimentation has shown that white rot fungus has many advantages over other bioremediation technologies for the treatment of media contaminated with chlorinated compounds. Some of the advantages are:

          1. The treatment technology can be in-situ.
          2. By-products are biodegradable.
          3. Since the corrugated cardboard provides the growth media, no additional material sources are needed.
          4. Weekly tilling of contaminated soil is eliminated because the corrugation in the cardboard provides an aerobic environment necessary for the fungus.
Performance Status/
Limitations:

Performance Status:

          Only bench-scale studies have been conducted but it is believed that the technology will also be an effective remediation tool at a large scale.

          Limitations:

          Bench-scale studies have only used one type of soil; therefore, soil type could limit the effectiveness of this technology. Climate may also affect the efficiency of the technology. High concentration of contaminants may affect the efficiency of this technology. High concentrations of TNT in the media significantly reduce the effectiveness of the fungus.
Topics
Bioremediation/Biodegradation, Technologies, Treatment/Remediation
Additional Topics/Tags/Keywords
Bioremediation, White Rot Fungus

Organization:
Clyde Engineering Service
Address:
P.O. Box 740644
Phone:
DescriptionNumber
City:
New Orleans
1.
Primary (504) 362-7929
State/Province/Territory:
LA
2.
Zip/Postal Code:
70174
3.
Country:
United States
4.
Fax:
Branch Locations: