Application of electrokinetic soil flushing to four herbicides: a comparison

Autor: Marcos R.V. Lanza, Cristina Sáez, Carlos A. Martínez-Huitle, F.L. Souza, E. Vieira dos Santos, Pablo Cañizares, Manuel A. Rodrigo
Jazyk: angličtina
Rok vydání: 2016
Předmět:
Environmental Engineering
Health
Toxicology and Mutagenesis
02 engineering and technology
010501 environmental sciences
01 natural sciences
chemistry.chemical_compound
Electrokinetic phenomena
Soil
medicine
Halogenated Diphenyl Ethers
Environmental Chemistry
Soil Pollutants
Atrazine
Drainage
Electrodes
Decontamination
Environmental Restoration and Remediation
0105 earth and related environmental sciences
Sulfonamides
Volatilisation
Electromigration
Triazines
Herbicides
Public Health
Environmental and Occupational Health
Environmental engineering
HERBICIDAS
Electrokinetic soil flushing
General Medicine
General Chemistry
Human decontamination
Pesticide
021001 nanoscience & nanotechnology
Pollution
chemistry
Environmental chemistry
Environmental science
Flushing
medicine.symptom
2
4-Dichlorophenoxyacetic Acid
0210 nano-technology
Zdroj: Repositório Institucional da UFRN
Universidade Federal do Rio Grande do Norte (UFRN)
instacron:UFRN
Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual)
Universidade de São Paulo (USP)
instacron:USP
Popis: In this work, four bench-scale plants containing soil spiked with four herbicides (2,4-Dichlorophenoxyacetic acid (2,4-D), oxyfluorfen, chlorsulfuron and atrazine) undergo treatment consisting of an electrokinetic soil flushing (EKSF). Results clearly demonstrate that efficiency of EKSF depends on the chemical characteristic of the pesticide used. The amount of pesticide collected in the anode well is more significant than that collected in the cathode wells, indicating that the electromigration is much more important than drainage by electro-osmotic flux for this application. After 15 d of treatment, the 2,4-D is the pesticide most efficiently removed (95% of removal), while chlorsulfuron is the pesticide more resilient to the treatment. Additionally, volatilization was found to be a process of the major significance in the application of electrokinetic techniques to soil polluted with herbicides and because of that it should always be taken into account in the future design of full-scale processes.
Databáze: OpenAIRE
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