RT info:eu-repo/semantics/article
T1 Unveiling the capacity of bioaugmentation application, in comparison with biochar and rhamnolipid for TPHs degradation in aged hydrocarbons polluted soil
A1 Curiel Alegre, Sandra
A1 Fuente Vivas, Dalia de la
A1 Khan, Aqib Hassan Ali
A1 García Tojal, Javier
A1 Velasco Arroyo, Blanca
A1 Rumbo Lorenzo, Carlos
A1 Soja, Gerhard
A1 Rad Moradillo, Juan Carlos
A1 Barros García, Rocío
K1 Biodegradation
K1 Bioaugmentation
K1 Biochar
K1 Rhamnolipids
K1 TPHs polluted soils
K1 Recalcitrant hydrocarbons
K1 Química agrícola
K1 Agricultural chemistry
K1 Química inorgánica
K1 Chemistry, Inorganic
K1 Bioquímica
K1 Biochemistry
K1 Biología molecular
K1 Molecular biology
AB Persistent, aged hydrocarbons in soil hinder remediation, posing a significant environmental threat. While bioremediation offers an environmentally friendly and cost-effective approach, its efficacy for complex contaminants relies on enhancing pollutant bioavailability. This study explores the potential of immobilized bacterial consortia combined with biochar and rhamnolipids to accelerate bioremediation of aged total petroleum hydrocarbon (TPH)-contaminated soil. Previous research indicates that biochar and biosurfactants can increase bioremediation rates, while mixed consortia offer sequential degradation and higher hydrocarbon mineralization. The present investigation aimed to assess whether combining these strategies could further enhance degradation in aged, complex soil matrices. The bioaugmentation (BA) with bacterial consortium increased the TPHs degradation in aged soil (over 20% compared to natural attenuation - NA). However, co-application of BA with biochar and rhamnolipid higher did not show a statistically prominent synergistic effect. While biochar application facilitated the maintenance of hydrocarbon degrading bacterial consortium in soil, the present study did not identify a direct influence in TPHs degradation. The biochar application in contaminated soil contributed to TPHs adsorption. Rhamnolipid alone slightly increased the TPHs biodegradation with NA, while the combined bioaugmentation treatment with rhamnolipid and biochar increased the degradation between 27.5 and 29.8%. These findings encourage further exploration of combining bioaugmentation with amendment, like biochar and rhamnolipid, for remediating diverse environmental matrices contaminated with complex and aged hydrocarbons.
PB Elsevier
SN 0013-9351
YR 2024
FD 2024-07-01
LK http://hdl.handle.net/10259/9504
UL http://hdl.handle.net/10259/9504
LA eng
NO The authors declare the following financial interests/personal relationships which may be considered as potential competing interests: Rocio Barros reports financial support was provided by European Union's Horizon 2020 research (Grant Agreement No. 826312) and innovation program. Sandra Curiel-Alegre reports financial support was provided by Junta de Castilla y León (ORDEN EDU/1508/2020, de 15 de diciembre)
DS Repositorio Institucional de la Universidad de Burgos
RD 27-jul-2024