INVESTIGADORES
BUCALA Veronica
artículos
Título:
Thermal treatment of soils contaminated with gas oil: influence of soil composition and treatment temperature
Autor/es:
PIÑA, JULIANA; MERINO, JERÓNIMO; ERRAZU, ALBERTO; BUCALÁ, VERÓNICA
Revista:
JOURNAL OF HAZARDOUS MATERIALS.
Editorial:
ELSEVIER SCIENCE BV
Referencias:
Lugar: Amsterdam; Año: 2002 vol. B94 p. 273 - 290
ISSN:
0304-3894
Resumen:
oil (diesel fuel oil) at 2.5 wt.% were heated from room temperature to different final temperatures
(200900 ◦C). The experiments, performed in an anaerobic media, simulate conditions pertinent to
ex situ thermal desorptive and thermal destructive treatments. The products generated during the
heating were collected and light gases were analyzed by gas chromatography. The results indicate
that the chemical composition of the soil is a key factor since it strongly influences the quantity and
composition of the off-gases. According to the liquid and light gas yields, the gas oil does not affect
appreciably the generation of pyrolysis products of the own soil constituents and the gas oil does not
suffer significant chemical transformations even at high operating temperatures (e.g. 900 ◦C).With
surface areas of 16 000 cm2/g (Soil A) and 85 000 cm2/g (Soil B) based on the monolayer adsorbed
model, 4 and 20%, respectively, of the original gas oil can be adsorbed. These values are in good
agreement with experimental data. Even for high temperatures, the employed thermal treatment is
capable to practically remove the gas oil from the soil bed without changing appreciably the original
chemical composition of the contaminant.◦C). The experiments, performed in an anaerobic media, simulate conditions pertinent to
ex situ thermal desorptive and thermal destructive treatments. The products generated during the
heating were collected and light gases were analyzed by gas chromatography. The results indicate
that the chemical composition of the soil is a key factor since it strongly influences the quantity and
composition of the off-gases. According to the liquid and light gas yields, the gas oil does not affect
appreciably the generation of pyrolysis products of the own soil constituents and the gas oil does not
suffer significant chemical transformations even at high operating temperatures (e.g. 900 ◦C).With
surface areas of 16 000 cm2/g (Soil A) and 85 000 cm2/g (Soil B) based on the monolayer adsorbed
model, 4 and 20%, respectively, of the original gas oil can be adsorbed. These values are in good
agreement with experimental data. Even for high temperatures, the employed thermal treatment is
capable to practically remove the gas oil from the soil bed without changing appreciably the original
chemical composition of the contaminant.◦C).With
surface areas of 16 000 cm2/g (Soil A) and 85 000 cm2/g (Soil B) based on the monolayer adsorbed
model, 4 and 20%, respectively, of the original gas oil can be adsorbed. These values are in good
agreement with experimental data. Even for high temperatures, the employed thermal treatment is
capable to practically remove the gas oil from the soil bed without changing appreciably the original
chemical composition of the contaminant.2/g (Soil A) and 85 000 cm2/g (Soil B) based on the monolayer adsorbed
model, 4 and 20%, respectively, of the original gas oil can be adsorbed. These values are in good
agreement with experimental data. Even for high temperatures, the employed thermal treatment is
capable to practically remove the gas oil from the soil bed without changing appreciably the original
chemical composition of the contaminant.