Gentle remediation options for DDT- and HCH-contaminated soil
Gentle remediation options (GROs) such as vermiremediation have not been applied in Colombian soils with DDT and HCH yet, while bioaugmentation and biostimulation under anaerobic and/or aerobic conditions have been successfully implemented. However, it is important to determine under which of the l...
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Universidad de Antioquia
2024-11-01
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| Series: | Revista Facultad de Ingeniería Universidad de Antioquia |
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| Online Access: | https://revistas.udea.edu.co/index.php/ingenieria/article/view/353150 |
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| author | María Camila Portilla-Saldarriaga Stiven Camilo Dueñas-García Inés Hernández-Celi Martha Jhoana Estévez-Gómez |
| author_facet | María Camila Portilla-Saldarriaga Stiven Camilo Dueñas-García Inés Hernández-Celi Martha Jhoana Estévez-Gómez |
| author_sort | María Camila Portilla-Saldarriaga |
| collection | DOAJ |
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Gentle remediation options (GROs) such as vermiremediation have not been applied in Colombian soils with DDT and HCH yet, while bioaugmentation and biostimulation under anaerobic and/or aerobic conditions have been successfully implemented. However, it is important to determine under which of the latter conditions the assessed consortium performs better. This research evaluated vermiremediation and bioaugmentation under anaerobic and/or aerobic conditions, assisted with biostimulation, in a DDT- and HCH-contaminated soil. Bacteria were isolated from the contaminated soil and used for bioaugmentation. Two GROs were conducted for 60 days: 1) vermiremediation by Eisenia foetida without/with biostimulation with compost from organic waste; 2) bioaugmentation of a Proteobacteria and Firmicutes consortium under anaerobic and/or aerobic conditions, and biostimulation with the compost. Finally, the removals determined the efficiency of each treatment. In the first GRO, all the earthworms died by intoxication after 48 h of experimentation. In the second GRO, the highest removals were obtained with the anaerobic treatment: 27% 4,4'-DDT, 52% 4,4'-DDE, 58% 4,4'-DDD, 72% α-HCH, 35% β-HCH, 92% γ-HCH, and 23% δ-HCH. The results indicate that vermiremediation is not feasible for restoring soils with these pollutants at the studied levels. On the contrary, although the synergy between bioaugmentation and biostimulation represents a promising alternative, it is crucial to conduct longer evaluations of the proposed treatments to better understand their effects on the decontamination of soils with DDT and HCH.
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| format | Article |
| id | doaj-art-64b3e6c84255497ca684061f0752a1e3 |
| institution | Kabale University |
| issn | 0120-6230 2422-2844 |
| language | English |
| publishDate | 2024-11-01 |
| publisher | Universidad de Antioquia |
| record_format | Article |
| series | Revista Facultad de Ingeniería Universidad de Antioquia |
| spelling | doaj-art-64b3e6c84255497ca684061f0752a1e32025-01-17T03:43:51ZengUniversidad de AntioquiaRevista Facultad de Ingeniería Universidad de Antioquia0120-62302422-28442024-11-0110.17533/udea.redin.20241143Gentle remediation options for DDT- and HCH-contaminated soilMaría Camila Portilla-Saldarriaga0Stiven Camilo Dueñas-García1Inés Hernández-Celi2Martha Jhoana Estévez-Gómez3Universidad Santo TomásUniversidad Santo TomásUniversidad Santo TomásUniversidad Santo Tomás Gentle remediation options (GROs) such as vermiremediation have not been applied in Colombian soils with DDT and HCH yet, while bioaugmentation and biostimulation under anaerobic and/or aerobic conditions have been successfully implemented. However, it is important to determine under which of the latter conditions the assessed consortium performs better. This research evaluated vermiremediation and bioaugmentation under anaerobic and/or aerobic conditions, assisted with biostimulation, in a DDT- and HCH-contaminated soil. Bacteria were isolated from the contaminated soil and used for bioaugmentation. Two GROs were conducted for 60 days: 1) vermiremediation by Eisenia foetida without/with biostimulation with compost from organic waste; 2) bioaugmentation of a Proteobacteria and Firmicutes consortium under anaerobic and/or aerobic conditions, and biostimulation with the compost. Finally, the removals determined the efficiency of each treatment. In the first GRO, all the earthworms died by intoxication after 48 h of experimentation. In the second GRO, the highest removals were obtained with the anaerobic treatment: 27% 4,4'-DDT, 52% 4,4'-DDE, 58% 4,4'-DDD, 72% α-HCH, 35% β-HCH, 92% γ-HCH, and 23% δ-HCH. The results indicate that vermiremediation is not feasible for restoring soils with these pollutants at the studied levels. On the contrary, although the synergy between bioaugmentation and biostimulation represents a promising alternative, it is crucial to conduct longer evaluations of the proposed treatments to better understand their effects on the decontamination of soils with DDT and HCH. https://revistas.udea.edu.co/index.php/ingenieria/article/view/353150Aerobic conditionsAnaerobic conditionsBioaugmentationBiostimulationPersistent organic pollutants (POPs)Vermiremediation |
| spellingShingle | María Camila Portilla-Saldarriaga Stiven Camilo Dueñas-García Inés Hernández-Celi Martha Jhoana Estévez-Gómez Gentle remediation options for DDT- and HCH-contaminated soil Revista Facultad de Ingeniería Universidad de Antioquia Aerobic conditions Anaerobic conditions Bioaugmentation Biostimulation Persistent organic pollutants (POPs) Vermiremediation |
| title | Gentle remediation options for DDT- and HCH-contaminated soil |
| title_full | Gentle remediation options for DDT- and HCH-contaminated soil |
| title_fullStr | Gentle remediation options for DDT- and HCH-contaminated soil |
| title_full_unstemmed | Gentle remediation options for DDT- and HCH-contaminated soil |
| title_short | Gentle remediation options for DDT- and HCH-contaminated soil |
| title_sort | gentle remediation options for ddt and hch contaminated soil |
| topic | Aerobic conditions Anaerobic conditions Bioaugmentation Biostimulation Persistent organic pollutants (POPs) Vermiremediation |
| url | https://revistas.udea.edu.co/index.php/ingenieria/article/view/353150 |
| work_keys_str_mv | AT mariacamilaportillasaldarriaga gentleremediationoptionsforddtandhchcontaminatedsoil AT stivencamiloduenasgarcia gentleremediationoptionsforddtandhchcontaminatedsoil AT ineshernandezceli gentleremediationoptionsforddtandhchcontaminatedsoil AT marthajhoanaestevezgomez gentleremediationoptionsforddtandhchcontaminatedsoil |