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Biosorption and Biodegradation of Humic Substances by Trichoderma viride

Mira Peirović1, Felicita Briški2, Marija Kaštelan-Macan1


1
Laboratory of Analytical Chemistry,

2Laboratory of Industrial Ecology, Faculty of Chemical Engineering and Technology, University of Zagreb, Marulićev trg 19, 41000 Zagreb

Article history:

Received September 13, 1993

Accepted October 21, 1993

Summary:

Mycelial pellets of Trichoderma viride were used for biodegradation of naturally occurring and commercial humic substances from aqueous solutions. Experiments were carried out at 25 °C and pH = 6.0. Removal of humic substances from the aqueous phase was monitored by following the COD-elimination, fungal growth and decrease of absorbance at 370 nm. Within 10 days 42 % of HAS (soil humic acids), 44 % of FAS (soil fulvic acids) and 67 % of HAF (Fluka humic acids) were removed from the solution. It was found thai beside degradation, adsorption of humic substances onto fungal mycelia play a significant role in this process.


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