TY  - JOUR
AU  - Franco, N.
AU  - Mendonca Filho, J. G.
AU  - Silva, T. F.
AU  - Stojanović, Ksenija A.
AU  - Fontana, L. F.
AU  - Carvalhal-Gomes, S. B. V.
AU  - Silva, F. S.
AU  - Furukawa, G. G.
PY  - 2016
UR  - https://cherry.chem.bg.ac.rs/handle/123456789/2369
AB  - Hydrous pyrolysis experiments were performed on a recent microbial mat sample from Lagoa Vermelha, Brazil, to determine whether crude oil can be generated and expelled during artificial maturation of the Organic Matter (OM). The experiments were conducted at 280 degrees C, 330 degrees C and 350 degrees C during 20h. Two types of liquid pyrolysis products, assigned as free oil and bitumen, were isolated and analyzed. Free oil represents free organic phase released by hydrous pyrolysis, whereas bitumen was obtained by extraction from the solid pyrolysis residue with dichloromethane. Changes in the OM maturity were determined using Rock-Eval parameters and biomarker maturity ratios of original sample and pyrolysis products. Biomarker compositions of original sample extract and liquid pyrolysates were used for deteiniination of dominant bacterial source. The yields of free oil and bitumen showed that a microbial mat OM has a high liquid hydrocarbons generation potential. Rock-Eval maturity parameters, biopolymer and biomarker compositions indicate a significant increase of the OM maturity during hydrous pyrolysis. At 280 degrees C the release of free, adsorbed and occluded compounds was observed; however, without a cracking of the OM. At 330 degrees C the generation of bitumen and free oil is mostly related to the OM cracking. The highest yield of free oil was recorded at this temperature. Distribution of biomarkers in the extract of original sample and liquid pyrolysates confirms cyanobacteria-dominated microbial mats, whereas the identification of long chain n-alkane series, with maximum at C-26, and prominent C-30 hop-17(21)-ene additionally suggest the presence of sulfate reducing bacteria.
PB  - Univ Barcelona, Barcelona
T2  - Geologica Acta
T1  - Geochemical characterization of the hydrous pyrolysis products from a recent cyanobacteria-dominated microbial mat.
VL  - 14
IS  - 4
SP  - 385
EP  - 401
DO  - 10.1344/GeologicaActa2016.14.4.4
ER  - 

@article{
author = "Franco, N. and Mendonca Filho, J. G. and Silva, T. F. and Stojanović, Ksenija A. and Fontana, L. F. and Carvalhal-Gomes, S. B. V. and Silva, F. S. and Furukawa, G. G.",
year = "2016",
abstract = "Hydrous pyrolysis experiments were performed on a recent microbial mat sample from Lagoa Vermelha, Brazil, to determine whether crude oil can be generated and expelled during artificial maturation of the Organic Matter (OM). The experiments were conducted at 280 degrees C, 330 degrees C and 350 degrees C during 20h. Two types of liquid pyrolysis products, assigned as free oil and bitumen, were isolated and analyzed. Free oil represents free organic phase released by hydrous pyrolysis, whereas bitumen was obtained by extraction from the solid pyrolysis residue with dichloromethane. Changes in the OM maturity were determined using Rock-Eval parameters and biomarker maturity ratios of original sample and pyrolysis products. Biomarker compositions of original sample extract and liquid pyrolysates were used for deteiniination of dominant bacterial source. The yields of free oil and bitumen showed that a microbial mat OM has a high liquid hydrocarbons generation potential. Rock-Eval maturity parameters, biopolymer and biomarker compositions indicate a significant increase of the OM maturity during hydrous pyrolysis. At 280 degrees C the release of free, adsorbed and occluded compounds was observed; however, without a cracking of the OM. At 330 degrees C the generation of bitumen and free oil is mostly related to the OM cracking. The highest yield of free oil was recorded at this temperature. Distribution of biomarkers in the extract of original sample and liquid pyrolysates confirms cyanobacteria-dominated microbial mats, whereas the identification of long chain n-alkane series, with maximum at C-26, and prominent C-30 hop-17(21)-ene additionally suggest the presence of sulfate reducing bacteria.",
publisher = "Univ Barcelona, Barcelona",
journal = "Geologica Acta",
title = "Geochemical characterization of the hydrous pyrolysis products from a recent cyanobacteria-dominated microbial mat.",
volume = "14",
number = "4",
pages = "385-401",
doi = "10.1344/GeologicaActa2016.14.4.4"
}

Franco, N., Mendonca Filho, J. G., Silva, T. F., Stojanović, K. A., Fontana, L. F., Carvalhal-Gomes, S. B. V., Silva, F. S.,& Furukawa, G. G.. (2016). Geochemical characterization of the hydrous pyrolysis products from a recent cyanobacteria-dominated microbial mat.. in Geologica Acta
Univ Barcelona, Barcelona., 14(4), 385-401.
https://doi.org/10.1344/GeologicaActa2016.14.4.4

Franco N, Mendonca Filho JG, Silva TF, Stojanović KA, Fontana LF, Carvalhal-Gomes SBV, Silva FS, Furukawa GG. Geochemical characterization of the hydrous pyrolysis products from a recent cyanobacteria-dominated microbial mat.. in Geologica Acta. 2016;14(4):385-401.
doi:10.1344/GeologicaActa2016.14.4.4 .

Franco, N., Mendonca Filho, J. G., Silva, T. F., Stojanović, Ksenija A., Fontana, L. F., Carvalhal-Gomes, S. B. V., Silva, F. S., Furukawa, G. G., "Geochemical characterization of the hydrous pyrolysis products from a recent cyanobacteria-dominated microbial mat." in Geologica Acta, 14, no. 4 (2016):385-401,
https://doi.org/10.1344/GeologicaActa2016.14.4.4 . .