Jorge Antonio Lopes - Academia.edu (original) (raw)

Papers by Jorge Antonio Lopes

Research paper thumbnail of Comparative study techniques for TPH and PAH extraction from clayey and sandy soils for chromatography analyses

The objective of this study was to compare three extraction procedures: soxhlet (SOX), microwaves... more The objective of this study was to compare three extraction procedures: soxhlet (SOX), microwaves (MARS) and accelerate extraction with solvent (ASE) regarding the extraction efficiency of different fractions of total petroleum hydrocarbons (TPH) and polycyclic aromatic hydrocarbons (PAH) from sandy and clayey soil with aged contamination analyzed by gas chromatography. Besides the extraction efficiency, water, solvent and time consumption were considered. Regarding clayey soil, for the extraction of different fractions of total petroleum hydrocarbons (TPH), ASE resulted in better recovery of n-alkanes and hydrocarbons resolved fraction (HRF). SOX and MARS performed better for the heaviest fraction (non-resolved complex mixture-NRCM). Regarding sandy soil, ASE performed better during extraction of all TPH fractions. In the case of polycyclic aromatic hydrocarbons (PAH), extraction with ASE showed the best result in both clayey and sandy soils. When other variables were taken into ac...

Research paper thumbnail of Bioremediation of clayey soil contaminated with crude oil: comparison of dynamic and static biopiles in lab-scale

Linnaeus Eco-Tech

Bioremediation of aged and newly clayey soil contaminated with crude oil was investigated in lab-... more Bioremediation of aged and newly clayey soil contaminated with crude oil was investigated in lab-scale using two different strategies (biostimulation-BIOS and bioaugmentation-BIOA), also simulating two different technological options: dynamic biopile (M) and static biopile with forced aeration (B). The inoculum used for bioaugmentation was obtained from the aged contaminated soil. The treatments were performed in triplicates and included one control (original contaminated soil-CONT). The treatments were monitored with soil sampling obtained after 0, 24, 59 and 121 days when the populations of total heterotrophic microorganism (THM), total fungi (TF), and oil-degrading microorganism (ODM) as well as the extracted total petroleum hydrocarbons (TPH) and the 16 polycyclic aromatic hydrocarbons (PAH) prioritized by U.S. EPA were analyzed by gas chromatography. It was observed a trend for reduction of the microbial population density from 0 to 121 days. As expected, the population densiti...

Research paper thumbnail of Ética e Educação Ambiental

Revista Brasileira De Direito Constitucional, Jul 18, 2013

Research paper thumbnail of Biopile to Treat Oil-Contaminated Soils: Some Brazilian Experiance

Linnaeus Eco-Tech, Feb 1, 2017

Remediation of soils contaminated with petroleum and its products became a major issue in all reg... more Remediation of soils contaminated with petroleum and its products became a major issue in all regions of the world where onshore and offshore exploitation, refining, transportation and storage of these products are carried out intensively. Many techniques for remediation of contaminated areas have been developed and tested during decades, being bioremediation both in-situ and ex-situ tow of the available options that require further development, which are currently capturing the attention of different sectors involved with the problem in Brazil. This paper presents the historical perspective of the increasing problem that initially appeared in the most traditional industrialized countries and currently has been intensified in countries with growing economy and technological development such as Brazil. Technological options for remediating the areas, variables relevant to the cleaning process, as well as the most recent trends in Brazil regarding the use of different techniques, with focus on biopiles are briefly presented.

Research paper thumbnail of Comparative study techniques for TPH and PAH extraction from clayey and sandy soils for chromatography analyses

The objective of this study was to compare three extraction procedures: soxhlet (SOX), microwaves... more The objective of this study was to compare three extraction procedures: soxhlet (SOX), microwaves (MARS) and accelerate extraction with solvent (ASE) regarding the extraction efficiency of different fractions of total petroleum hydrocarbons (TPH) and polycyclic aromatic hydrocarbons (PAH) from sandy and clayey soil with aged contamination analyzed by gas chromatography. Besides the extraction efficiency, water, solvent and time consumption were considered. Regarding clayey soil, for the extraction of different fractions of total petroleum hydrocarbons (TPH), ASE resulted in better recovery of n-alkanes and hydrocarbons resolved fraction (HRF). SOX and MARS performed better for the heaviest fraction (non-resolved complex mixture-NRCM). Regarding sandy soil, ASE performed better during extraction of all TPH fractions. In the case of polycyclic aromatic hydrocarbons (PAH), extraction with ASE showed the best result in both clayey and sandy soils. When other variables were taken into ac...

Research paper thumbnail of Bioremediation of clayey soil contaminated with crude oil: comparison of dynamic and static biopiles in lab-scale

Linnaeus Eco-Tech

Bioremediation of aged and newly clayey soil contaminated with crude oil was investigated in lab-... more Bioremediation of aged and newly clayey soil contaminated with crude oil was investigated in lab-scale using two different strategies (biostimulation-BIOS and bioaugmentation-BIOA), also simulating two different technological options: dynamic biopile (M) and static biopile with forced aeration (B). The inoculum used for bioaugmentation was obtained from the aged contaminated soil. The treatments were performed in triplicates and included one control (original contaminated soil-CONT). The treatments were monitored with soil sampling obtained after 0, 24, 59 and 121 days when the populations of total heterotrophic microorganism (THM), total fungi (TF), and oil-degrading microorganism (ODM) as well as the extracted total petroleum hydrocarbons (TPH) and the 16 polycyclic aromatic hydrocarbons (PAH) prioritized by U.S. EPA were analyzed by gas chromatography. It was observed a trend for reduction of the microbial population density from 0 to 121 days. As expected, the population densiti...

Research paper thumbnail of Ética e Educação Ambiental

Revista Brasileira De Direito Constitucional, Jul 18, 2013

Research paper thumbnail of Biopile to Treat Oil-Contaminated Soils: Some Brazilian Experiance

Linnaeus Eco-Tech, Feb 1, 2017

Remediation of soils contaminated with petroleum and its products became a major issue in all reg... more Remediation of soils contaminated with petroleum and its products became a major issue in all regions of the world where onshore and offshore exploitation, refining, transportation and storage of these products are carried out intensively. Many techniques for remediation of contaminated areas have been developed and tested during decades, being bioremediation both in-situ and ex-situ tow of the available options that require further development, which are currently capturing the attention of different sectors involved with the problem in Brazil. This paper presents the historical perspective of the increasing problem that initially appeared in the most traditional industrialized countries and currently has been intensified in countries with growing economy and technological development such as Brazil. Technological options for remediating the areas, variables relevant to the cleaning process, as well as the most recent trends in Brazil regarding the use of different techniques, with focus on biopiles are briefly presented.