Reversible electrokinetic adsorption barriers for the removal of atrazine and oxyfluorfen from spiked soils

Santos, Elisama Vieira dos; Sáez, Cristina; Cañizares, Pablo Canizares; Martínez-Huitle, Carlos Alberto; Rodrigo, Manuel Andres

Reversible electrokinetic adsorption barriers for the removal of atrazine and oxyfluorfen from spiked soils

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dc.contributor.author	Santos, Elisama Vieira dos
dc.contributor.author	Sáez, Cristina
dc.contributor.author	Cañizares, Pablo Canizares
dc.contributor.author	Martínez-Huitle, Carlos Alberto
dc.contributor.author	Rodrigo, Manuel Andres
dc.date.accessioned	2020-07-31T19:08:59Z
dc.date.available	2020-07-31T19:08:59Z
dc.date.issued	2017-01-15
dc.description.resumo	This study demonstrates the application of reversible electrokinetic adsorption barrier (REKAB) technology to soils spiked with low-solubility pollutants. A permeable reactive barrier (PRB) of granular activated carbon (GAC) was placed between the anode and cathode of an electrokinetic (EK) soil remediation bench-scale setup with the aim of enhancing the removal of two low-solubility herbicides (atrazine and oxyfluorfen) using a surfactant solution (sodium dodecyl sulfate) as the flushing fluid. This innovative study focused on evaluating the interaction between the EK system and the GAC-PRB, attempting to obtain insights into the primary mechanisms involved. The obtained results highlighted the successful treatment of atrazine and oxyfluorfen in contaminated soils. The results obtained from the tests after 15 days of treatment were compared with those obtained using the more conventional electrokinetic soil flushing (EKSF) technology, and very important differences were observed. Although both technologies are efficient for removing the herbicides from soils, REKAB outperforms EKSF. After the 15-day treatment tests, only approximately 10% of atrazine and oxyfluorfen remained in the soil, and adsorption onto the GAC bed was an important removal mechanism (15–17% of herbicide retained). The evaporation loses in REKAB were lower than those obtained in EKSF (45–50% compared to 60–65%)	pt_BR
dc.identifier.citation	SANTOS, E.V.; SÁEZ, C.; CAÑIZARES, P.; MARTÍNEZ-HUITLE, C.A.; RODRIGO, M.A.. Reversible electrokinetic adsorption barriers for the removal of atrazine and oxyfluorfen from spiked soils. Journal of Hazardous Materials (Print), v. 322, p. 413-420, 2017. Disponível em: https://www.sciencedirect.com/science/article/abs/pii/S0304389416309293?via%3Dihub#! Acesso em: 30 jul. 2020. https://doi.org/10.1016/j.jhazmat.2016.10.032	pt_BR
dc.identifier.doi	10.1016/j.jhazmat.2016.10.032
dc.identifier.issn	0304-3894
dc.identifier.uri	https://repositorio.ufrn.br/jspui/handle/123456789/29771
dc.language	en	pt_BR
dc.publisher	Elsevier	pt_BR
dc.rights	Attribution 3.0 Brazil	*
dc.rights.uri	http://creativecommons.org/licenses/by/3.0/br/	*
dc.subject	Electrokinetic	pt_BR
dc.subject	REKAB	pt_BR
dc.subject	Soil remediation	pt_BR
dc.subject	Permeable reactive barrier	pt_BR
dc.subject	Atrazine	pt_BR
dc.subject	Oxyfluorfen	pt_BR
dc.title	Reversible electrokinetic adsorption barriers for the removal of atrazine and oxyfluorfen from spiked soils	pt_BR
dc.type	article	pt_BR