| Journal: | Anais da Academia Brasileira de Ciencias |
| Database: | PERIÓDICA |
| System number: | 000436106 |
| ISSN: | 0001-3765 |
| Authors: | Trejos Delgado, Catalina1 Cadavid Restrepo, Gloria E2 Hormaza Anaguano, Angelina2 Agudelo, Edison A1 Barrios Ziolo, Leonardo1 Loaiza Usuga, Juan Carlos1 Cardona Gallo, Santiago A1 |
| Institutions: | 1Universidad Nacional de Colombia, Facultad de Minas, Medellín, Antioquia. Colombia 2Universidad Nacional de Colombia, Facultad de Ciencias, Medellín, Antioquia. Colombia |
| Year: | 2020 |
| Volumen: | 92 |
| Number: | 2 |
| Country: | Brasil |
| Language: | Inglés |
| Document type: | Artículo |
| Approach: | Analítico, descriptivo |
| English abstract | This research was implemented in the Colombian Amazon forest area; to assess the effect of Tween-80® surfactant in the degradation of the Total Petroleum Hydrocarbons (TPH) in bioremediation treatments under aerobic conditions in the laboratory and pilot-scale. One control treatment, Natural Attenuation (AT) and four biostimulation treatments with leonardite with four different dosages of Tween-80® were proposed. The efficacy of organic stimulators and nonionic surfactant in soil microbiota was studied at laboratory and pilot scales, the latter in a passive aeration reactor. The test that presented a better performance was carried out with a Convective Flow Reactor (CFR) at pilot-scale. The results showed that bioremediation strategies improved the natural degradation process; the best outcomes were obtained in a treatment that includes Leonardite and Tween-80® (1.5 g/L) with 52% TPH degradation in 80 days (d).Tween-80® produced an effect in TPH solubility, and increased the production of CO2 in distinctive bioremediation treatments in both periods. The kinetics of CO2 production showed that the system required a periodic addition of a co-substrate as well as an increase of soil microbiota through the addition of compost (pilot scale). In this stage more than 76% of contaminant was degraded in 60d |
| Disciplines: | Geociencias, Ingeniería |
| Keyword: | Suelos, Ingeniería ambiental, Derrame de petróleo, Contaminación del suelo, Biorremediación, Surfactantes |
| Keyword: | Soils, Environmental engineering, Oil spills, Bioremediation, Soil pollution, Surfactants |
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