Oxidative technologies for olive grove soils: Impacts of electrogenerated H2O2 and O3 on pesticide degradation and ecosystem health

This work investigates the application of electrochemically generated green oxidants for in situ soil remediation, focusing on hydrogen peroxide (H2O2) and ozone (O3) produced on demand. Real olive grove soils contaminated with atrazine and glyphosate were treated under bench-scale conditions for up...

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Detalles Bibliográficos
Autores: Navas Higuero, Cristina, Tiban Anrango, Bryan Andrés, Valenzuela Polo, Victor, Reyes Alcalde, Mi, Manzaneda Avila, Antonio José, Rascón , A J, García Reyes, J F, Salazar García, Rosana, Palomares Rius, J E, Lacasa Fernández, Engracia, Rodrigo Rodrigo, Manuel Andrés, Sáez Jiménez, Cristina
Tipo de recurso: artículo
Fecha de publicación:2026
País:España
Institución:Universidad de Castilla-La Mancha
Repositorio:RUIdeRA. Repositorio Institucional de la UCLM
OAI Identifier:oai:ruidera.uclm.es:10578/47072
Acceso en línea:https://doi.org/10.1016/j.jece.2026.121576
https://hdl.handle.net/10578/47072
Access Level:acceso abierto
Palabra clave:Advanced oxidation processes
Electrochemical remediation
Pesticide-contaminated soils
Descripción
Sumario:This work investigates the application of electrochemically generated green oxidants for in situ soil remediation, focusing on hydrogen peroxide (H2O2) and ozone (O3) produced on demand. Real olive grove soils contaminated with atrazine and glyphosate were treated under bench-scale conditions for up to 30 days. Removal efficiency was evaluated as a function of oxidant delivery and oxidant-to-contaminant ratio, together with an assessment of potential impacts on soil biological activity. Both oxidants promoted effective pesticide degradation, with atrazine removals exceeding 60 % for H2O2 and 40 % for O3, while glyphosate degradation reached up to 25 % and 21 %, respectively. Results indicate that contaminant removal was primarily limited by oxidant transport rather than oxidant concentration. Biological analyses revealed a marked suppression of soil respiration and increased nematode mortality following H2O2 treatment, whereas O3 caused minimal disturbance to soil biological functioning. These findings demonstrate that electrochemically generated ozone is a promising, field-compatible remediation strategy, providing effective contaminant removal while preserving soil ecosystem functionality.

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