UREA FROM WASTE WATERS – PERSPECTIVE NITROGEN AND CARBON SOURCE FOR GREEN ALGAE SCENEDESMUS SP. CULTIVATION
Published: 7 Jun 2016
Abstract: The cultivation of Scenedesmus sp., isolated from a natural pond using urea as a nitrogen source was investigated. The results showed that the maximum cell density (about 3.107 cells/ml) in the medium with urea is at the 72nd hour of cultivation. Increasing the number of algal cells were 1.6 fold (2% CO2) and 1.4 fold (0.04% CO2) respectively, than those cultured in the control medium. Quantity of chlorophyll “a” was the highest in the cultures on the medium urea +0.04% CO2 - about 5% of the dry weight. The best indication of the membrane stability and actual quantum yield (ϕPSII) was registered on the medium with urea supplied with 0.04% CO2 again. The repeated usage of urea as a carbon and a nitrogen source in the microalgal production can contribute not only to the reduction of environmental pollution, but also to considerably decrease the cost of cultivation.
Keywords: scenedesmus sp., urea, pigments, photosynthesis, ecology
Download full text
Back to the contents of the volume
© 2018 The Author(s). This is an open access article distributed under the terms of the Creative Commons Attribution License http://creativecommons.org/licenses/by/3.0/
, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. This permission does not cover any third party copyrighted material which may appear in the work requested.