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Journal of Biotechnology & Biomaterials | ISSN: 2155-952X | Volume: 8
3
rd
World Biotechnology Congress
December 03-04, 2018 Sao Paulo, Brazil
Bioremediation of polluted water using unicellular algae native fromArgentina
Andrea Trentini
1
, María Daniela Groppa
2
, Myriam Zawoznik
3
, Roxana Bigi
4
, Carlos Nadra
5
, Patricia Eleonora Perelman
3
and
Patricia Laura Marconi
1
1
Maimónides University, Argentina
2
The Bernardino Rivadavia Natural Sciences Argentine Museum, Argentina
3
University of Buenos Aires, Argentina
4
APRA-CIFA, Argentina
5
ACUMAR, Argentina
P
hysicochemical and microflora characterization of water samples from Cildañez stream at Ciudad Autónoma de Buenos
Aires shows that these waters are mainly polluted by cloacal microorganisms, metals and compounds that raise the COD
and BOD. In the present work, the remediation of these waters by bioprocesses in agitated tank bioreactors was simulated using
cultures of a native strain of
Chlorella vulgaris
immobilized in alginate beads. The bioremediation processes were carried out
in bioreactors with a marine impeller in autotrophic conditions for 7 days allowed the decrease of the microbial population
particularly
Escherichia coli
and total coliforms reduction (over 95%) and several physical-chemical parameters and heavy
metals. The percentage of pollutants removed was: ammoniacal nitrogen (96%), nitrates (86%), nitrites (98%) and total
phosphorus (53%) content. Moreover, significant results were observed with lead content reduction (95%). In addition, the
evaluation and monitoring of contaminated water can be done following the mitotic index and germinative power of
Allium
cepa
seeds (Datsch Silveira
et al
., 2017). This economic test evaluates cytostatic effects, DNA instability and inhibition of cell
division, caused by xenobiotics. The test was done before and after each bioprocess using distilled water as negative control.
Germination and mitotic indexes showed that treated waters after bioprocess recovers the values similar to the negative control.
The results obtained demonstrate the potential of this algae to be used in integrated processes that seek removal of xenobiotics.
Biography
Carlos Nadra is Currently working as the Researcher at APRA-CIFA at Argentina. Her research interests include Bioremediation, Cytostatic effects.
carlos.nadra@gmail.comAndrea Trentini et al., J Biotechnol Biomater 2018, Volume: 8
DOI: 10.4172/2155-952X-C7-107