Naslov
Removal of Humic Substances From Aqueous Solution by Fungal Pellets

Autori
Briški, Felicita ; Petrović, Mira ; Kaštelan-Macan, Marija ; Sipos, Laszlo

Izvornik
Biocatalysis (0886-4454) 10 (1994), 1-4; 1-14

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
Humic and fulvic acids; pellets of Aspergillus niger; biosorption; biodegradation

Sažetak
The removal of humic substances from aqueous solution at pH=4.8 and 6.0 and 25°C by pure culture of Aspergillus niger has been examined. The removal of humic substances from aqueous phase was monitored by following the decrease in absorbance at 370 nm. COD and fungal growth were also measured. The initial concentration of humic and fulvic acids, pH and diameter of fungal pellets were found to be the most important parameters. The results suggested that decolorization of batch culture was a consequence of several processes. In the first 5 hours for pellets with diameter 1-3 mm and 10 hours for pellets with diameter 2-5 mm adsorption of humic substances was dominant. Afterwords, desorption of slightly bound humic substances and their degradation, as well as degradation of remaining humic substances in the solution, continued simultaneously through the period of 10 days.

Izvorni jezik
Engleski

Znanstvena područja
Kemija

POVEZANOST RADA