FILAMENTOUS FUNGI REMOVE WEATHERED HYDROCARBONS FROM POLLUTED SOIL OF TROPICAL MÉXICO
Fuente:
Redalyc
Saved in:
| Main Author: | |
|---|---|
| Format: | Artículo científico |
| Language: | en |
| Published: |
Universidad Nacional Autónoma de México
2010
|
| Subjects: | |
| Online Access: | |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1876470141610360832 |
|---|---|
| author | Beatriz PÉREZ-ARMENDÁRIZ |
| author_facet | Beatriz PÉREZ-ARMENDÁRIZ |
| contents | FILAMENTOUS FUNGI REMOVE WEATHERED HYDROCARBONS FROM POLLUTED SOIL OF TROPICAL MÉXICO Beatriz PÉREZ-ARMENDÁRIZ Daniel MARTÍNEZ-CARRERA María CALIXTO-MOSQUEDA Joel ALBA Refugio RODRÍGUEZ-VÁZQUEZ Ciencias de la Tierra Aspergillus Penicillium Cladosporium bioaugmentation tropical Mexico Weathered hydrocarbons from worldwide petrolic activities become more recalcitrant over time. The removal of petroleum hydrocarbons from a polluted soil [65,000 mg total petroleum hydrocarbons (TPH)/kg soil], which had been exposed to tropical environmental conditions for more than 20 years in southeast Mexico, was studied using filamentous fungi. Experiments were carried out in batch reactors (60 mL) containing a substrate consisting of polluted soil and sugar cane bagasse pith as bulk agent (80:20, w/w). Sterile and non-sterile batch reactors were inoculated with spore suspensions from Aspergillus niger, Penicillium glabrum, and Cladosporium cladosporioides. The TPH were determined at the beginning and at the end of the experiments, and the CO2 production and accumulation were monitored by gas chromatography. All fungal species studied were associated to the removal of TPH, either on sterile or non-sterile treatments. A bioaugmentation process was observed due to the synergistic effect of C. cladosporioides and well-adapted indigenous microbial populations from the contaminated soil, as the highest removal of TPH (78.5%) and CO2 accumulation (14.3%) were recorded in this non-sterile treatment. By contrast, the lowest TPH removal was recorded in the same species, but in the sterile treatment (62.3%) showing that the absence of adapted indigenous microbiota significantly reduced fungal metabolism (CO2 accumulation: 9.1%), as well as the removal of TPH. Patterns of CO2 accumulation and TPH removal in other treatments suggested interspecific competence between fungal species and the adapted indigenous microbiota. 2010 artículo científico 0188-4999 https://www.redalyc.org/articulo.oa?id=37014384002 en http://www.redalyc.org/revista.oa?id=370 Revista Internacional de Contaminación Ambiental application/pdf Universidad Nacional Autónoma de México Revista Internacional de Contaminación Ambiental (México) Num.3 Vol.26 |
| format | Artículo científico |
| id | redalyc_37014384002 |
| institution | Redalyc |
| language | en |
| publishDate | 2010 |
| publisher | Universidad Nacional Autónoma de México |
| spellingShingle | FILAMENTOUS FUNGI REMOVE WEATHERED HYDROCARBONS FROM POLLUTED SOIL OF TROPICAL MÉXICO Beatriz PÉREZ-ARMENDÁRIZ Ciencias de la Tierra Aspergillus Penicillium Cladosporium bioaugmentation tropical Mexico FILAMENTOUS FUNGI REMOVE WEATHERED HYDROCARBONS FROM POLLUTED SOIL OF TROPICAL MÉXICO Beatriz PÉREZ-ARMENDÁRIZ Daniel MARTÍNEZ-CARRERA María CALIXTO-MOSQUEDA Joel ALBA Refugio RODRÍGUEZ-VÁZQUEZ Ciencias de la Tierra Aspergillus Penicillium Cladosporium bioaugmentation tropical Mexico Weathered hydrocarbons from worldwide petrolic activities become more recalcitrant over time. The removal of petroleum hydrocarbons from a polluted soil [65,000 mg total petroleum hydrocarbons (TPH)/kg soil], which had been exposed to tropical environmental conditions for more than 20 years in southeast Mexico, was studied using filamentous fungi. Experiments were carried out in batch reactors (60 mL) containing a substrate consisting of polluted soil and sugar cane bagasse pith as bulk agent (80:20, w/w). Sterile and non-sterile batch reactors were inoculated with spore suspensions from Aspergillus niger, Penicillium glabrum, and Cladosporium cladosporioides. The TPH were determined at the beginning and at the end of the experiments, and the CO2 production and accumulation were monitored by gas chromatography. All fungal species studied were associated to the removal of TPH, either on sterile or non-sterile treatments. A bioaugmentation process was observed due to the synergistic effect of C. cladosporioides and well-adapted indigenous microbial populations from the contaminated soil, as the highest removal of TPH (78.5%) and CO2 accumulation (14.3%) were recorded in this non-sterile treatment. By contrast, the lowest TPH removal was recorded in the same species, but in the sterile treatment (62.3%) showing that the absence of adapted indigenous microbiota significantly reduced fungal metabolism (CO2 accumulation: 9.1%), as well as the removal of TPH. Patterns of CO2 accumulation and TPH removal in other treatments suggested interspecific competence between fungal species and the adapted indigenous microbiota. 2010 artículo científico 0188-4999 https://www.redalyc.org/articulo.oa?id=37014384002 en http://www.redalyc.org/revista.oa?id=370 Revista Internacional de Contaminación Ambiental application/pdf Universidad Nacional Autónoma de México Revista Internacional de Contaminación Ambiental (México) Num.3 Vol.26 |
| title | FILAMENTOUS FUNGI REMOVE WEATHERED HYDROCARBONS FROM POLLUTED SOIL OF TROPICAL MÉXICO |
| topic | Ciencias de la Tierra Aspergillus Penicillium Cladosporium bioaugmentation tropical Mexico |
| url | https://www.redalyc.org/articulo.oa?id=37014384002 |