Title: Ammonia inhibition on Arthrospira platensis in relation to the initial biomass density and pH
Authors: Markou, Giorgos ×
Vandamme, Dries
Muylaert, Koenraad #
Issue Date: 2014
Publisher: Elsevier Applied Science
Series Title: Bioresource Technology vol:166 pages:259-265
Abstract: In this study the combined effect of total ammoniacal nitrogen (TAN) concentration, initial biomass density and initial pH of the cultivation medium on growth of A. platensis was studied. The results indicate that TAN inhibition in relation to the initial biomass in unregulated pH cultures is neither a clearly biomass-independent nor biomass-dependent phenomenon. However, low biomass densities are more susceptible to ammonia inhibition than higher biomass densities. Higher biomass densities seems to mitigate ammonia inhibition through rapider assmimilation of TAN. In all cases studied the growth rates were lower compared to the cultures with nitrate as nitrogen source. It was observed that at low TAN concentration, although no ammonia inhibition occured the growth rates were decreased due to nitrogen limitation. Low TAN concentration triggered the accumulation of carbohydrates affecting thus significantly the biomass composition. Ammonia losses from the cultivation system were also determined. Ammonia losses ranged between 17% and 80%.
ISSN: 0960-8524
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Microbial and Molecular Systems, Campus Kulak Kortrijk
Biology, Campus Kulak Kortrijk
Department of Biology - miscellaneous
× corresponding author
# (joint) last author

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