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ecotoxicological evaluation of the use of scrap tires as
XII Congresso Brasileiro de Ecotoxicologia
25 a 28 de setembro de 2012
Porto de Galinhas – PE
ECOTOXICOLOGICAL EVALUATION OF THE USE OF SCRAP TIRES AS
ARTIFICIAL REEF
Maria Loreto Nazar1; Magda Beretta2; Eric Herold3; Marlene Campos Peso de Aguiar 4; Asher Kiperstok5
1
[email protected] (PhD student's graduate program in Industrial Engineering (PEI), Federal University of
Bahia (UFBA), School of Engineering, Salvador, Bahia, Brazil)
2
[email protected] (Federal University of Bahia (UFBA), School of Engineering, Department of
Environmental Engineering, Research Nucleus in Environmental Engineering (NUPEA), Salvador, Bahia,
Brazil)
3
[email protected] (PhD student's graduate program in Industrial Engineering (PEI), Federal University of
Bahia (UFBA), School of Engineering, Salvador, Bahia, Brazil)
4
[email protected] (Federal University of Bahia (UFBA), Biology Institute, Department of Zoology,
Malacology Laboratory of Benthos Ecology (LAMEB) Bahia, Brazil)
5
[email protected] (Federal University of Bahia (UFBA), School of Engineering, Department of Environmental
Engineering, Clean Technology Network of Bahia (TECLIM), Salvador, Bahia, Brazil)
Solid residue management is one of the great problems faced by society, due to the operational and
administrative difficulties, and potential for transmitting disease affecting public health. Included in this
context is the issue of scrap tires – those that do not have any further condition for continued use since they
can no longer be restored. In order to decrease the existing immense environmental liability, CONAMA
Resolution 416/09 requires the final destination of discarded tires to be environmentally correct. One of the
possible alternatives is the installation of artificial reefs built with the use of scrap tires, with the aim of
recovering fishery stocks. Nevertheless, these studies lack research on the environmental impact with
reference to possible chemical compounds released by the tires in the water. The object of this study consists
of evaluating the level of toxicity caused by the tires to the marine organisms, using the Echinometra
lucunter as a bioindicator organism, through chronic toxicity tests with 36 hour duration. The results
obtained indicate that the highest levels of toxicity were observed in the extractions performed with acid pH
at temperatures of 45°C, considered as extreme conditions which do not generally occur on the seabed of the
Todos os Santos Bay, Bahia, Brazil, where an artificial reef is anchored on a pilot scale, built with
unserviceable tires. The tests performed in conditions considered as normal did not evidence any alarming
signs of toxic levels during the performance of bioassays with embryolarval stages of the E. lucunter.
Keywords: artificial reefs, scrap tires, Todos os Santos Bay
Sociedade Brasileira de Ecotoxicologia (SBE)
Universidade Federal de Pernambuco (UFPE)
186
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