Data/hora: 02/06/2024 00:17:56

Biblioteca(s): | Embrapa Florestas.
Data corrente: | 02/10/2008
Data da última atualização: | 02/10/2008
Autoria: | FERREIRA, A. T. S.; HAUER, V.; SILVA, E. T. da; SAUTTER, K. D.
Título: | Monitoring Remediation Techniques Using Soil Mesofauna in Oil- Contaminated Soils in Araucária, Paraná, Brazil.
Ano de publicação: | 2008
Fonte/Imprenta: | In: INTERNATIONAL COLLOQUIUM ON SOIL ZOOLOGY, 15; INTERNATIONAL COLLOQUIUM ON APTERYGOTA, 12., 2008, Curitiba. Biodiversity, conservation and sustainabele management of soil animal: abstracts. Colombo: Embrapa Florestas. Editors: George Gardner Brown; Klaus Dieter Sautter; Renato Marques; Amarildo Pasini. 1 CD-ROM.
Idioma: | Inglês

Conteúdo:

In Brazil, environmental accidents involving the oil industry occur every year. One of the main
accidents occurred in July 2000, at the President Getúlio Vargas Refinery - REPAR, in Araucária,
State of Paraná, which led to the contamination of soil and the Saldanha River watershed. Several
remediation techniques were established beginning in 2000 and the soil mesofauna were chosen
as indicators of soil pollution and of the effectiveness of remediation, due to their biodiversity,
high reproduction rates and sensitivity to environmental stressing agents. The following treatments
were monitored from October 2007 to February 2008: ploughed soil without vegetation (AM1);
phyto-remediaton using bracatinga (Mimosa scabrella) (AM2); soil washing (surfactant - LESS
and hydrogen peroxide) (AM3); use of heterogeneous catalysis with titanium dioxide (AM4);
use of heterogeneous catalysis (TiO2) with adsorption using peat (Sphagnum) (AM5); control
areas not contaminated and without any treatment effects (AM6 and AM7). Nine samples per
treatment were collected, using a soil corer (0-10 cm depth), and the mesofauna was extracted
in a Modified Berlese Funnel. Soil moisture, physical and chemical parameters were also
analyzed. Acari predominated in all the samples, but Acari and Collembola were less abundant
with ploughing (AM1) at all sample dates. Highest densities of Acari and Collembola occurred
in the control (AM7) in November 2007 and January 2008. In the treatments AM4 (October and
November 2007), AM5 (November 2007 and January 2008) and AM3 (January 2008) the Acari
and Collembola populations densities were almost as high as in the control (AM7). In the remaining
treatments populations were much lower then AM7, indicating a disruption in the biological
system.

Categoria do assunto: | --
Registro original: | Embrapa Florestas (CNPF)
Exemplares: | CNPF - (43770-1) - UPE - PL - -- - CD0305 -  -  - DIS