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Synergy of the Tropical Earthworm Pontoscolex corethrurus and Oil Palm Bagasse in the Removal of Heavy Crude Oil

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Abstract

The tropical endogeic earthworm Pontoscolex corethrurus, a non-standard species used in ecotoxicity, has been found in crude oil-contaminated habitats. We estimated the removal of total hydrocarbons from heavy crude “Maya” oil on an artificially contaminated soil with a median lethal concentration of P. corethrurus and an addition of oil palm bagasse. P. corethrurus had a high survival rate, and the addition of oil palm bagasse led to a greater growth and an increase in abundance of bacteria and fungi. The activity of P. corethrurus and the nutritional quality of oil palm bagasse had a significant impact on the removal of a larger amount of petroleum hydrocarbons from contaminated soil. We concluded that the endogeic earthworm P. corethrurus and oil palm bagasse acted synergistically to achieve a more effective removal of total petroleum hydrocarbons from soil. These results show the potential for using P. corethrurus to remove, either directly or indirectly, crude oil from soil.

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Acknowledgements

This research was supported by the PRODEP-SEP (CA-UVER-173 and CA-UVER-332) and Mexican CONACYT (CB-2007-01/83600). In addition, we are grateful to anonymous reviewers and Alberto Ortiz Brito for careful revision of the manuscript.

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Correspondence to Ángel I. Ortiz-Ceballos.

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del Carmen Cuevas-Díaz, M., Ramos-Morales, F.R., Castro-Luna, A. et al. Synergy of the Tropical Earthworm Pontoscolex corethrurus and Oil Palm Bagasse in the Removal of Heavy Crude Oil. Bull Environ Contam Toxicol 108, 956–962 (2022). https://doi.org/10.1007/s00128-022-03475-w

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  • DOI: https://doi.org/10.1007/s00128-022-03475-w

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