Innovative photoelectrochemical cell for the removal of CHCs from soil washing wastes
At a Glance
Section titled āAt a Glanceā| Metadata | Details |
|---|---|
| Publication Date | 2019-08-02 |
| Journal | Separation and Purification Technology |
| Authors | Salvador Cotillas, Engracia Lacasa, Miguel A. HerrƔiz, Cristina SƔez, Pablo CaƱizares |
| Institutions | University of Castilla-La Mancha |
| Citations | 16 |
Abstract
Section titled āAbstractāThis work presents a novel photoelectrochemical cell concept for the treatment of soil washing effluents polluted with chlorinated hydrocarbons (CHCs). This cell combines the use of low current densities and the direct irradiation of UV light to the electrodes and the bulk, being easy to be scaled up. To evaluate its performance, the treatment of a soil washing effluent polluted with clofibric acid (~50 mg dmā3) was carried out. The prototype evaluated was equipped with two boron doped diamond (BDD) plates as anodes, two stainless steel (SS) plates as cathodes and a UV lamp located at the bottom. Results show that it was possible to attain a complete abatement and mineralization of the organochlorinated compound at applied electric charges lower than 5 Ah dmā3, regardless the irradiation of UV light. Nevertheless, the removal rate was higher during photoelectrolysis, specially at the beginning of the treatment, which indicates important advantages for the removal of aromatic compounds. In addition, the toxicity of the effluent was dramatically reduced at the end of the process. These results point out the high performance of the novel photoelectrochemical reactor proposed for the complete remediation of soils polluted with CHCs.
Tech Support
Section titled āTech SupportāOriginal Source
Section titled āOriginal SourceāReferences
Section titled āReferencesā- 2014 - A review on the occurrence of micropollutants in the aquatic environment and their fate and removal during wastewater treatment [Crossref]
- 2009 - Occurrence and fate of organochlorinated pesticides and PAH in agricultural soils from the Ebro River Basin [Crossref]
- 2018 - Reversible electrokinetic adsorption barriers for the removal of organochlorine herbicide from spiked soils [Crossref]
- 2017 - Is it really important the addition of salts for the electrolysis of soil washing effluents? [Crossref]
- 2017 - Co-occurrence and interactions of pollutants, and their impacts on soil remediationāa review [Crossref]
- 2017 - Biological technologies for the remediation of co-contaminated soil [Crossref]
- 2016 - Removal of hydrophobic organic pollutants from soil washing/flushing solutions: a critical review [Crossref]
- 2018 - Removal of 2,4-D herbicide in soils using a combined process based on washing and adsorption electrochemically assisted [Crossref]
- 2017 - Removal of pendimethalin from soil washing effluents using electrolytic and electro-irradiated technologies based on diamond anodes [Crossref]