Remediation of Organically Contaminated Soil Through the Combination of Assisted Phytoremediation and Bioaugmentation
Here, we aimed to bioremediate organically contaminated soil with Brassica napus and a bacterial consortium. The bioaugmentation consortium consisted of four endophyte strains that showed plant growth-promoting traits (three Pseudomonas and one Microbacterium) plus three strains with the capacity to...
| Authors: | ; ; ; ; ; |
|---|---|
| Format: | Article |
| Publication date: | 2019 |
| Country: | España |
| Institution: | Universidad del País Vasco |
| Repository: | Addi. Archivo Digital para la Docencia y la Investigación |
| OAI Identifier: | oai:addi.ehu.eus:10810/41488 |
| Online Access: | http://hdl.handle.net/10810/41488 |
| Access Level: | Open access |
| Keyword: | bioremediation microbial indicators polluted soil soil health soil quality gradient gel-electrophoresis thlaspi-caerulescens growth microbial community aided phytostabilization biological indicators functional diversity metal pollution efficiency biodegradation |
| _version_ | 1878730897597923328 |
|---|---|
| author | Anza, Mikel |
| author2 | Salazar, Oihane Epelde Sierra, Lur Becerril Soto, José María Alcorta Calvo, Miren Itziar Garbisu Crespo, Carlos |
| author2_role | author author author author author |
| author_browse | Alcorta Calvo, Miren Itziar Anza, Mikel Becerril Soto, José María Epelde Sierra, Lur Garbisu Crespo, Carlos Salazar, Oihane |
| author_facet | Anza, Mikel Salazar, Oihane Epelde Sierra, Lur Becerril Soto, José María Alcorta Calvo, Miren Itziar Garbisu Crespo, Carlos |
| author_role | author |
| collection | Addi. Archivo Digital para la Docencia y la Investigación |
| description | Here, we aimed to bioremediate organically contaminated soil with Brassica napus and a bacterial consortium. The bioaugmentation consortium consisted of four endophyte strains that showed plant growth-promoting traits (three Pseudomonas and one Microbacterium) plus three strains with the capacity to degrade organic compounds (Burkholderia xenovorans LB400, Paenibacillus sp. and Lysinibacillus sp.). The organically contaminated soil was supplemented with rhamnolipid biosurfactant and sodium dodecyl benzenesulfonate to increase the degradability of the sorbed contaminants. Soils were treated with organic amendments (composted horse manure vs. dried cow slurry) to promote plant growth and stimulate soil microbial activity. Apart from quantification of the expected decrease in contaminant concentrations (total petroleum hydrocarbons, polycyclic aromatic hydrocarbons), the effectiveness of our approach was assessed in terms of the recovery of soil health, as reflected by the values of different microbial indicators of soil health. Although the applied treatments did not achieve a significant decrease in contaminant concentrations, a significant improvement of soil health was observed in our amended soils (especially in soils amended with dried cow slurry), pointing out a not-so-uncommon situation in which remediation efforts fail from the point of view of the reduction in contaminant concentrations while succeeding to recover soil health. |
| eu_rights_str_mv | openAccess |
| format | article |
| id | ES_255af4a736ce4e4ffb35e395bde8a35f |
| institution | Universidad del País Vasco |
| instname_str | Universidad del País Vasco |
| network_acronym_str | ES |
| network_name_str | España |
| oai_identifier_str | oai:addi.ehu.eus:10810/41488 |
| publishDate | 2019 |
| publishDateSort | 2019 |
| publisher | MDPI |
| publisherStr | MDPI |
| reponame_str | Addi. Archivo Digital para la Docencia y la Investigación |
| spelling | Remediation of Organically Contaminated Soil Through the Combination of Assisted Phytoremediation and Bioaugmentation Anza, Mikel Salazar, Oihane Epelde Sierra, Lur Becerril Soto, José María Alcorta Calvo, Miren Itziar Garbisu Crespo, Carlos bioremediation microbial indicators polluted soil soil health soil quality gradient gel-electrophoresis thlaspi-caerulescens growth microbial community aided phytostabilization biological indicators functional diversity metal pollution efficiency biodegradation Here, we aimed to bioremediate organically contaminated soil with Brassica napus and a bacterial consortium. The bioaugmentation consortium consisted of four endophyte strains that showed plant growth-promoting traits (three Pseudomonas and one Microbacterium) plus three strains with the capacity to degrade organic compounds (Burkholderia xenovorans LB400, Paenibacillus sp. and Lysinibacillus sp.). The organically contaminated soil was supplemented with rhamnolipid biosurfactant and sodium dodecyl benzenesulfonate to increase the degradability of the sorbed contaminants. Soils were treated with organic amendments (composted horse manure vs. dried cow slurry) to promote plant growth and stimulate soil microbial activity. Apart from quantification of the expected decrease in contaminant concentrations (total petroleum hydrocarbons, polycyclic aromatic hydrocarbons), the effectiveness of our approach was assessed in terms of the recovery of soil health, as reflected by the values of different microbial indicators of soil health. Although the applied treatments did not achieve a significant decrease in contaminant concentrations, a significant improvement of soil health was observed in our amended soils (especially in soils amended with dried cow slurry), pointing out a not-so-uncommon situation in which remediation efforts fail from the point of view of the reduction in contaminant concentrations while succeeding to recover soil health. This study was supported by Spanish Ministry of Economy, Industry and Competitiveness through NANORRIZORREM-2 Project (AGL2016-76592-R). MDPI http://hdl.handle.net/10810/41488 |
| spellingShingle | Remediation of Organically Contaminated Soil Through the Combination of Assisted Phytoremediation and Bioaugmentation Anza, Mikel bioremediation microbial indicators polluted soil soil health soil quality gradient gel-electrophoresis thlaspi-caerulescens growth microbial community aided phytostabilization biological indicators functional diversity metal pollution efficiency biodegradation |
| title | Remediation of Organically Contaminated Soil Through the Combination of Assisted Phytoremediation and Bioaugmentation |
| title_full | Remediation of Organically Contaminated Soil Through the Combination of Assisted Phytoremediation and Bioaugmentation |
| title_fullStr | Remediation of Organically Contaminated Soil Through the Combination of Assisted Phytoremediation and Bioaugmentation |
| title_full_unstemmed | Remediation of Organically Contaminated Soil Through the Combination of Assisted Phytoremediation and Bioaugmentation |
| title_short | Remediation of Organically Contaminated Soil Through the Combination of Assisted Phytoremediation and Bioaugmentation |
| title_sort | Remediation of Organically Contaminated Soil Through the Combination of Assisted Phytoremediation and Bioaugmentation |
| topic | bioremediation microbial indicators polluted soil soil health soil quality gradient gel-electrophoresis thlaspi-caerulescens growth microbial community aided phytostabilization biological indicators functional diversity metal pollution efficiency biodegradation |
| topic_facet | bioremediation microbial indicators polluted soil soil health soil quality gradient gel-electrophoresis thlaspi-caerulescens growth microbial community aided phytostabilization biological indicators functional diversity metal pollution efficiency biodegradation |
| url | http://hdl.handle.net/10810/41488 |