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Demulsification of crude oil-in-water emulsions by means of fungal spores

The present feature describes for the first time the application of spores from Aspergillus sp. IMPMS7 to break out crude oil-in-water emulsions (O/W). The fungal spores were isolated from marine sediments polluted with petroleum hydrocarbons. The spores exhibited the ability to destabilize differen...

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Autores principales: Vallejo-Cardona, Alba Adriana, Martínez-Palou, Rafael, Chávez-Gómez, Benjamín, García-Caloca, Graciela, Guerra-Camacho, Jairo, Cerón-Camacho, Ricardo, Reyes-Ávila, Jesús, Karamath, James Robert, Aburto, Jorge
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Public Library of Science 2017
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5325188/
https://www.ncbi.nlm.nih.gov/pubmed/28234917
http://dx.doi.org/10.1371/journal.pone.0170985
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author Vallejo-Cardona, Alba Adriana
Martínez-Palou, Rafael
Chávez-Gómez, Benjamín
García-Caloca, Graciela
Guerra-Camacho, Jairo
Cerón-Camacho, Ricardo
Reyes-Ávila, Jesús
Karamath, James Robert
Aburto, Jorge
author_facet Vallejo-Cardona, Alba Adriana
Martínez-Palou, Rafael
Chávez-Gómez, Benjamín
García-Caloca, Graciela
Guerra-Camacho, Jairo
Cerón-Camacho, Ricardo
Reyes-Ávila, Jesús
Karamath, James Robert
Aburto, Jorge
author_sort Vallejo-Cardona, Alba Adriana
collection PubMed
description The present feature describes for the first time the application of spores from Aspergillus sp. IMPMS7 to break out crude oil-in-water emulsions (O/W). The fungal spores were isolated from marine sediments polluted with petroleum hydrocarbons. The spores exhibited the ability to destabilize different O/W emulsions prepared with medium, heavy or extra-heavy Mexican crude oils with specific gravities between 10.1 and 21.2°API. The isolated fungal spores showed a high hydrophobic power of 89.3 ± 1.9% and with 2 g of spores per liter of emulsion, the half-life for emulsion destabilization was roughly 3.5 and 0.7 h for extra-heavy and medium crude oil, respectively. Then, the kinetics of water separation and the breaking of the O/W emulsion prepared with heavy oil through a spectrofluorometric technique were studied. A decrease in the fluorescence ratio at 339 and 326 nm (I339/I326) was observed in emulsions treated with spores, which is similar to previously reported results using chemical demulsifiers.
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spelling pubmed-53251882017-03-09 Demulsification of crude oil-in-water emulsions by means of fungal spores Vallejo-Cardona, Alba Adriana Martínez-Palou, Rafael Chávez-Gómez, Benjamín García-Caloca, Graciela Guerra-Camacho, Jairo Cerón-Camacho, Ricardo Reyes-Ávila, Jesús Karamath, James Robert Aburto, Jorge PLoS One Research Article The present feature describes for the first time the application of spores from Aspergillus sp. IMPMS7 to break out crude oil-in-water emulsions (O/W). The fungal spores were isolated from marine sediments polluted with petroleum hydrocarbons. The spores exhibited the ability to destabilize different O/W emulsions prepared with medium, heavy or extra-heavy Mexican crude oils with specific gravities between 10.1 and 21.2°API. The isolated fungal spores showed a high hydrophobic power of 89.3 ± 1.9% and with 2 g of spores per liter of emulsion, the half-life for emulsion destabilization was roughly 3.5 and 0.7 h for extra-heavy and medium crude oil, respectively. Then, the kinetics of water separation and the breaking of the O/W emulsion prepared with heavy oil through a spectrofluorometric technique were studied. A decrease in the fluorescence ratio at 339 and 326 nm (I339/I326) was observed in emulsions treated with spores, which is similar to previously reported results using chemical demulsifiers. Public Library of Science 2017-02-24 /pmc/articles/PMC5325188/ /pubmed/28234917 http://dx.doi.org/10.1371/journal.pone.0170985 Text en © 2017 Vallejo-Cardona et al http://creativecommons.org/licenses/by/4.0/ This is an open access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
spellingShingle Research Article
Vallejo-Cardona, Alba Adriana
Martínez-Palou, Rafael
Chávez-Gómez, Benjamín
García-Caloca, Graciela
Guerra-Camacho, Jairo
Cerón-Camacho, Ricardo
Reyes-Ávila, Jesús
Karamath, James Robert
Aburto, Jorge
Demulsification of crude oil-in-water emulsions by means of fungal spores
title Demulsification of crude oil-in-water emulsions by means of fungal spores
title_full Demulsification of crude oil-in-water emulsions by means of fungal spores
title_fullStr Demulsification of crude oil-in-water emulsions by means of fungal spores
title_full_unstemmed Demulsification of crude oil-in-water emulsions by means of fungal spores
title_short Demulsification of crude oil-in-water emulsions by means of fungal spores
title_sort demulsification of crude oil-in-water emulsions by means of fungal spores
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5325188/
https://www.ncbi.nlm.nih.gov/pubmed/28234917
http://dx.doi.org/10.1371/journal.pone.0170985
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