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6CCVD Research

Selection of anodic material for the combined electrochemical-biological treatment of lindane polluted soil washing effluents

At a Glance

Section titled “At a Glance”
MetadataDetails
Publication Date2019-09-16
JournalJournal of Hazardous Materials
AuthorsMaría Belén Carboneras Contreras, José Villaseñor, F.J. Fernåndez, Manuel A. Rodrigo, Pablo Cañizares
InstitutionsUniversity of Castilla-La Mancha
Citations13

Abstract

Section titled “Abstract”

This paper focuses on the removal of lindane from soil washing effluents (SWEs) using combined electrochemical -biological processes. In particular, it has been evaluated the influence of the anodic material used in the electrolysis of the SWE on the biodegradability and toxicity of the effluents. Four anode materials were tested: Boron Doped Diamond (BDD), Carbon Felt (CF), and Mixed Metal Oxides Anodes with iridium and ruthenium (MMO-Ir and MMO-Ru). These materials were tested at different current densities and electric current charges applied. Lindane, TOC, sulphate, and chlorine species concentrations were monitored during electrochemical experiments, showing important differences in their evolution during the treatment. In spite of reaching a good removal of lindane with all the materials tested, results showed that Boron Doped Diamond working at 15 mA cm<sup>-2</sup> achieved the best biodegradability results in the electrolyzed effluents, because the ratio BOD<sub>5</sub>/COD increased from 0.2 to 0.5, followed by Carbon Felt anode. Regarding toxicity, Carbon Felt decreased toxicity by 80%. Opposite to what it was expected, MMO anodes did not achieve biodegradability improvement and they only showed reduction in toxicity at high electrical charges.

Tech Support

Section titled “Tech Support”

Original Source

Section titled “Original Source”

References

Section titled “References”
  1. 1999 - Factors influencing the distribution of lindane and other hexachlorocyclohexanes in the environment [Crossref]
  2. 1999 - Ecotoxicological assessment of soils of former manufactured gas plant sites: bioremediation potential and pollutant mobility [Crossref]
  3. 2018 - Lindane degradation by electrooxidation process: effect of electrode materials on oxidation and mineralization kinetics [Crossref]
  4. 2013 - POP-contaminated sites from HCH production in Sabiñånigo, Spain [Crossref]
  5. 2011 - Hexachlorocyclohexane (HCH) as new Stockholm Convention POPs—a global perspective on the management of Lindane and its waste isomers [Crossref]
  6. 2018 - Lindane, kepone and pentachlorobenzene: chloropesticides banned by Stockholm convention [Crossref]
  7. 2017 - Remediation of soils polluted with lindane using surfactant-aided soil washing and electrochemical oxidation [Crossref]
  8. 2010 - Analysis of composition, distribution and origin of hexachlorocyclohexane residues in agricultural soils from NW Spain [Crossref]
  9. 2010 - Dual actions of lindane (Îł-hexachlorocyclohexane) on calcium homeostasis and exocytosis in rat PC12 cells [Crossref]
  10. 2018 - The toxicity of lindane in the female reproductive system: a review on the aral sea

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