Biological Natural Attenuation and Contaminant Oxidation in Sediment Caps: Recent Advances and Future Opportunities

Giovanna Pagnozzi, Sean Carroll, Danny D. Reible, Kayleigh Millerick

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

Capping represents an efficient and well-established remediation practice to contain pollutants in sediments. Coupling capping amendments with biodegradation is an emerging technology with great potential to promote simultaneous sequestration and oxidation of contaminants in situ. Capping materials alter the native sediment environment and affect the biodegradation potential of benthic microbial communities. The placement of materials specifically influences (i) porewater pH and composition, (ii) nutrient fluxes, (iii) electron accepting processes, (iv) bioavailability of contaminants, and (v) biofilm formation. This review summarizes current literature documenting the impact of these alterations on microbial ecology and biodegradation activity, describes recent advances in bioactive sediment caps, and identifies areas where additional research is warranted.

Original languageEnglish
Pages (from-to)281-294
Number of pages14
JournalCurrent Pollution Reports
Volume6
Issue number3
DOIs
StatePublished - Sep 1 2020

Keywords

  • Bioactive capping
  • Biofilm
  • Bioremediation
  • Hydrophobic organic compounds
  • Natural attenuation
  • Sediment capping

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