title: Spannende Alleskönner: Algen und ihre „Anwendungsgebiete“
Creators: name: Boenigk, Jens
name: Zydorczyk, Sarah
name: Mietzel, Thorsten
Publisher: name: DuEPublico: Duisburg-Essen Publications online, University of Duisburg-Essen, Germany
Year: 2018
Subjects: subject: 570
subject: 624

description: Drei Forscher der Universität Duisburg-Essen haben sich nach mehreren Jahren Forschung mit der Firma Locoslab selbständig gemacht. Locoslab GmbH ist ein 2012 ins Leben gerufene Spin-off der Universität, das cloud-basierte Produkte und Dienstleistungen rund um das Thema Lokalisierung anbietet. Vielfältige Anwendungsmöglichkeiten durch den technischen Einsatz des so genannten RF (Radio Frequencing) Fingerprinting, beispielsweise in den Bereichen Navigation auf Flughäfen, in Einkaufszentren oder auf Messen. So können personalisierte Mobilitätslösungen realisiert werden.
description: Algae are responsible for approximately
50 % of global primary production.
Algal production is thus
essential for the global carbon cycle,
ecosystem health and climate. The
diversity of algae and the multitude of
species provide a buffer for ecosystem
functions in the face of changing environmental
factors and climate change.
Algae are, however, not a monophyletic
group, but rather comprise many
different organismal lineages which
are not closely related to each other.
The common characteristic of algae
is that they are eukaryotic photosynthetic
organisms with the exception
of land plants. The capability for photosynthesis
was gained independently in several lineages and even more
frequently lost independently in different
lineages. This article describes
the diversity of algae, pattern of algal
distribution and evolutionary scenarios
triggering the differentiation
of nutritional strategies, in particular
the shift from phototrophic nutrition
to heterotrophic nutrition. Specifically
the availability of nutrients, light
and inorganic carbon or of alternative
carbon sources is key in triggering
the multiple differentiation and
specialization of nutritional modes
in algae. Today, nutrients are usually
removed biologically in waste water
treatment facilities. The shortcoming
of this practice, however, is the
enormous energy consumption for
aeration and the transformation of
organically bound carbons into CO2.
A sustainable alternative to remove
nutrients is the use of micro algae.
Different methods for the removal of
nutrients by Scenedesmus species on a
laboratory scale are described in the
present article. Moreover, larger-scale
tests were carried out at an urban
wastewater treatment plant. The
results suggest that the microalgae are
effective in the removal of nitrogen,
especially in a tubular reactor design.
Furthermore, this article describes the
degradation of diclofenac and sulfamethoxazole
by the green algae Chlorella
vulgaris on a laboratory scale.
The results show that the microalgae
can significantly reduce the concentration
of the pharmaceuticals. Within
100 hours a removal efficiency of
diclofenac by 65 % and of the antibiotic
sulfamethoxazole by 40 % in an
algae-bacteria mixture was observed.
description: UNIKATE: Berichte aus Forschung und Lehre, no. 51Herausforderung Wasserforschung - lokal, regional, global, p. 70