Gentle remediation options for soil with mixed chromium (VI) and lindane pollution: biostimulation, bioaugmentation, phytoremediation and vermiremediation.

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ID: 118517
2020
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Abstract
Gentle Remediation Options (GROs), such as biostimulation, bioaugmentation, phytoremediation and vermiremediation, are cost-effective and environmentally-friendly solutions for soils simultaneously polluted with organic and inorganic compounds. This study assessed the individual and combined effectiveness of GROs in recovering the health of a soil artificially polluted with hexavalent chromium [Cr(VI)] and lindane. A greenhouse experiment was performed using organically-amended non-amended mixed polluted soils. All soils received the following treatments: (i) no treatment; (ii) bioaugmentation with an actinobacteria consortium; (iii) vermiremediation with ; (iv) phytoremediation with ; (v) bioaugmentation + vermiremediation; (vi) bioaugmentation + phytoremediation; and (vii) bioaugmentation + vermiremediation + phytoremediation. Soil health recovery was determined based on Cr(VI) and lindane concentrations, microbial properties and toxicity bioassays with plants and worms. Cr(VI) pollution caused high toxicity, but some GROs were able to partly recover soil health: (i) the organic amendment decreased Cr(VI) concentrations, alleviating toxicity; (ii) the actinobacteria consortium was effective at removing both Cr(VI) and lindane; (iii) and had a positive effect on the removal of pollutants and improved microbial properties. The combination of the organic amendment, , and the actinobacteria consortium was the most effective strategy.
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lacalle2020gentleheliyon Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Lacalle, Rafael G;Aparicio, Juan D;Artetxe, Unai;Urionabarrenetxea, Erik;Polti, Marta A;Soto, Manuel;Garbisu, Carlos;Becerril, José M;
Journal Heliyon
Year 2020
DOI
10.1016/j.heliyon.2020.e04550
URL
Keywords
chemistry Environmental Science Microbiology bioremediation environmental pollution ecological restoration sustainable development actinobacteria ecotoxicity brassica napus metal pollution soil health environmental chemistry soil pollution phytomanagement eisenia fetida organic amendment soil biology soil chemistry soil microbiology

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