This project explored the feasibility of using fungi in a constructed wetland
for the treatment of pulp mill effluent. The effluent is high in dissolved
lignins (some of which are chlorinated), which have proven very difficult to
degrade biologically. Mindful of work done with the (terrestrial) white rot
fungi, especially Phanerochaete chtysosporium, the question is asked, Is there
a fungus which can tolerate submerged conditions while degrading a
significant amount of dissolved lignins? Two fungal species with lignin-degrading
capability were isolated from submerged films in a log pond.
These fungi have been evaluated for decolorization potential under different
environmental conditions.
Results of laboratory experiments show that one of these fungi, identified as
Acremonium sp., was capable of 44% decolorization of pulp mill effluent
under sterile, submerged, room temperature conditions. The fungal
decolorization was evaluated both in floating cultures and as a film
inoculated on wood chips. In addition, bench-scale examination of the
potential of this fungus to decolorize pulp mill effluent in non-sterile
conditions was completed. / Graduation date: 1994
| Identifer | oai:union.ndltd.org:ORGSU/oai:ir.library.oregonstate.edu:1957/35771 |
| Date | 03 June 1993 |
| Creators | Lesley, Dawn |
| Contributors | Moore, James A. |
| Source Sets | Oregon State University |
| Language | en_US |
| Detected Language | English |
| Type | Thesis/Dissertation |
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