Ex situ remediation of polluted soils by absorptive polymers, and acomparison of slurry and two-phase partitioning bioreactors forultimate contaminant degradation (Articolo in rivista)

Type
Label
  • Ex situ remediation of polluted soils by absorptive polymers, and acomparison of slurry and two-phase partitioning bioreactors forultimate contaminant degradation (Articolo in rivista) (literal)
Anno
  • 2013-01-01T00:00:00+01:00 (literal)
Alternative label
  • 1)Tomei M.C., 1)Mosca Angelucci D., 2)Annesini M.C., 3)Daugulis A.J (2013)
    Ex situ remediation of polluted soils by absorptive polymers, and acomparison of slurry and two-phase partitioning bioreactors forultimate contaminant degradation
    in Journal of hazardous materials (Print)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • 1)Tomei M.C., 1)Mosca Angelucci D., 2)Annesini M.C., 3)Daugulis A.J (literal)
Pagina inizio
  • 31 (literal)
Pagina fine
  • 37 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 262 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • 1)Water Research Institute, C.N.R., Via Salaria km 29.300, Monterotondo Scalo, 00015 Rome, Italy 2)Department of Chemical Engineering Materials and Environment, Sapienza University of Rome, Via Eudossiana 18, 00184 Rome, Italy 3)Department of Chemical Engineering, Queen's University, Kingston, Ontario, Canada K7L 3N6h (literal)
Titolo
  • Ex situ remediation of polluted soils by absorptive polymers, and acomparison of slurry and two-phase partitioning bioreactors forultimate contaminant degradation (literal)
Abstract
  • tThe present study has provided a comparison between a conventional ex situ method for the treatmentof contaminated soil, a soil slurry bioreactor, with a novel technology in which a contaminant is rapidlyand effectively removed from the soil by means of absorptive polymer beads, which are then added to atwo-phase partitioning bioreactor (TPPB) for biodegradation of the target molecule. 4-nitrophenol (4NP)was selected as a model contaminant, being representative of a large class of xenobiotics, and the DuPontthermoplastic HytrelTM8206 was utilized for its extraction from soil over ranges of soil contaminationlevel, soil moisture content, and polymer:soil ratios. Since the polymers were able to rapidly (up to77% and 85% in 4 and 24 h respectively) and selectively remove the contaminant, the soil retained itsnutrient and microflora content, which is in contrast to soil washing which can remove these valuablesoil resources. After 4 h of reaction time, the TPPB system demonstrated removal efficiency four timeshigher (77% vs 20%) than the slurry system, with expected concomitant savings in time and energy. Avolumetric removal rate of 75 mg4NP h-1L-1was obtained in the TPPB, significantly greater than thevalue of 1.7 obtained in the slurry bioreactor. The polymers were readily regenerated for subsequentreuse, demonstrating the versatility of the polymer-based soil treatment technology. (literal)
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