Development of fungal inocula for bioaugmentation of contaminated soils.

Applied and Environmental Microbiology
D Lestan, R T Lamar

Abstract

This report describes novel fungal inocula for bioaugmentation of soils contaminated with hazardous organic compounds. The inocula are in the form of pelleted solid substrates coated with a sodium alginate suspension of fungal spores or mycelial fragments and incubated until overgrown with the mycelium of selected lignin-degrading fungi. The organisms evaluated were Phanerochaete chrysosporium (BKM F-1767, ATCC 42725), P. sordida (HHB-8922-Sp), Irpex lacteus (Mad-517, ATCC 11245), Bjerkandera adusta (FP-135160-Sp, ATCC 62023), and Trametes versicolor (MD-277). The pelleted fungal inocula resisted competition and proliferation from indigenous soil microbes, were lower in moisture content than current fungal inocula, and had sufficient mechanical strength to allow handling and introduction into the soil without a change in the mechanical consistency of the pellets. Inoculated at a rate of 3% in artificially contaminated nonsterile soil, I. lacteus, B. adusta, and T. versicolor removed 86, 82, and 90%, respectively, of the pentachlorophenol in 4 weeks. A mathematical model was developed to explain moisture distribution in a hydrogel-coated pelleted substrate.

References

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Nov 1, 1990·Applied and Environmental Microbiology·R T LamarT K Kirk
Sep 1, 1992·Applied and Environmental Microbiology·C P Romaine, B Schlagnhaufer

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Citations

Nov 26, 2009·Folia Microbiologica·C NovotnýV Sasek
Jan 1, 1997·Annual Review of Microbiology·E de Jong, J A Field
May 28, 2009·Journal of Agricultural and Food Chemistry·Inmaculada SampedroAlessandro D'Annibale
Aug 26, 2004·Environmental Pollution·Anders R JohnsenHauke Harms

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