Banca de DEFESA: ANTONIO ITALCY DE OLIVEIRA JUNIOR

Uma banca de DEFESA de DOUTORADO foi cadastrada pelo programa.
STUDENT : ANTONIO ITALCY DE OLIVEIRA JUNIOR
DATE: 22/03/2024
TIME: 14:00
LOCAL: Pos-graduação Engenharia Civil - remoto
TITLE:

Geotechnical Behavior and Proposal for Bioremediation of a Tropical Soil Contamined by Diesel Oil

KEY WORDS:

Contaminated Soils. Fuels. Geotechnical behavior. Bioremediation.

PAGES: 162
BIG AREA: Engenharias
AREA: Engenharia Civil
SUMMARY:

Fuel contamination in soil can cause changes in physical, chemical and geotechnical characteristics, requiring remediation. However, few studies have been carried out with tropical soils in Brazil, especially soils from the interior of the Northeast. The objective of the work is to analyze the behavior of soil in Caruaru-PE due to contamination by diesel oil and propose bioremediation. Contaminations with 0, 2, 4 and 8% diesel oil were analyzed. Physical characterization (granulometry, real grain density and Atterberg limits), chemical characterization (pH, organic matter content and FRX), and evaluation of hydromechanical behavior (compaction, direct shear and oedometric compression in flooded and non-flooded conditions) were carried out. saturated hydraulic conductivity, characteristic curve and collapse potential). For bioremediation, the biopile technique was used using 5% and 10% of organic compound and biosolids from WWTP, alone, as structuring materials. The presence of the contaminant made the soil texture coarser, reduced the plasticity index and pH, the organic matter content increased, the shearresistance parameters reduced considerably (up to 100% in cohesion and 40,6% in the friction angle) , the compressibility increased (up to 42.1% in the compression index and 76.6% in the decompression index), the collapse potential also increased (up to 5.09%), the hydraulic conductivity reduced and, the matrix suction reduced. The biopile technique promoted the removal of up to 91% of total petroleum hydrocarbons using 10% organic compound as structuring material, in 180 days of treatment. Therefore, it is concluded that the contamination had adverse effects on the soil from a geotechnical point of view and that the treatment proposal using biopiles proved to be a viable alternative for soil remediation.

COMMITTEE MEMBERS:
Externa à Instituição - ANTONIO THOMÉ - UPF
Externa à Instituição - KARLA SALVAGNI HEINECK - UFRGS
Externa à Instituição - KATIA VANESSA BICALHO - UFES
Presidente - 3199298 - MAURICIO ALVES DA MOTTA SOBRINHO
Externo à Instituição - SANDRO LEMOS MACHADO - UFBA