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A Modified Approach for in Situ Chemical Oxidation Coupled to Biodegradation Enhances Light Nonaqueous Phase Liquid Source-Zone Remediation.
Fedrizzi, Franciele; Ramos, Débora T; Lazzarin, Helen S C; Fernandes, Marilda; Larose, Catherine; Vogel, Timothy M; Corseuil, Henry X.
Afiliação
  • Fedrizzi F; Department of Sanitary and Environmental Engineering, Federal University of Santa Catarina , Florianópolis, Santa Catarina, Brazil.
  • Ramos DT; Department of Sanitary and Environmental Engineering, Federal University of Santa Catarina , Florianópolis, Santa Catarina, Brazil.
  • Lazzarin HS; Department of Sanitary and Environmental Engineering, Federal University of Santa Catarina , Florianópolis, Santa Catarina, Brazil.
  • Fernandes M; Department of Sanitary and Environmental Engineering, Federal University of Santa Catarina , Florianópolis, Santa Catarina, Brazil.
  • Larose C; Environmental Microbial Genomics, Laboratoire Ampere, CNRS, École Centrale de Lyon, Université de Lyon , Ecully, France.
  • Vogel TM; Environmental Microbial Genomics, Laboratoire Ampere, CNRS, École Centrale de Lyon, Université de Lyon , Ecully, France.
  • Corseuil HX; Department of Sanitary and Environmental Engineering, Federal University of Santa Catarina , Florianópolis, Santa Catarina, Brazil.
Environ Sci Technol ; 51(1): 463-472, 2017 01 03.
Article em En | MEDLINE | ID: mdl-27935684
Field and batch experiments were conducted to assess whether a modified approach for in situ chemical oxidation (ISCO) (with MgO2 and Fe2O3 particles recovered from acid mine drainage treatment) can enhance LNAPL (light nonaqueous phase liquid) dissolution and produce bioavailable soluble compounds. This modified ISCO approach was coupled to biodegradation to further remove residual compounds by microbially mediated processes. Pure palm biodiesel (B100) was chosen to represent a poorly water-soluble compound that behaves like LNAPLs, and 100 L was released to a 2 m2 area excavated down to the water table. A past adjacent B100-field experiment under natural attenuation was conducted as a baseline control. Results demonstrated the enhancement of organic compound dissolution and production of soluble compounds due to the modified in situ chemical oxidation. The slow release of H2O2 by MgO2 decomposition (termed partial chemical oxidation) and production of soluble compounds allowed the stimulation of microbial growth and promoted a beneficial response in microbial communities involved in oxidized biodiesel compound biodegradation. This is the first field experiment to demonstrate that this modified ISCO approach coupled to biodegradation could be a feasible strategy for the removal of poorly water-soluble compounds (e.g., biodiesel) and prevent the long-term effects generally posed in source zones.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Compostos Férricos / Peróxido de Hidrogênio Idioma: En Revista: Environ Sci Technol Ano de publicação: 2017 Tipo de documento: Article País de afiliação: Brasil País de publicação: Estados Unidos
Texto completo
Adicionar na Minha BVS
Imprimir
XML
PubMed Links
Buscar no Google

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Compostos Férricos / Peróxido de Hidrogênio Idioma: En Revista: Environ Sci Technol Ano de publicação: 2017 Tipo de documento: Article País de afiliação: Brasil País de publicação: Estados Unidos