Elimination of persistent organic pollutants from fish oil with solid adsorbents

X. Ortiz, L. Carabellido, M. Martí, R. Martí, X. Tomás, J. Díaz-Ferrero

Research output: Indexed journal article Articlepeer-review

21 Citations (Scopus)


Fish oils are one of the main sources of ω-3 fatty acids in animal and human diet. However, they can contain high concentrations of persistent organic pollutants due to their lipophilic properties. The aim of this study is the reduction of persistent organic pollutants in fish oil using silicon-based and carbon-based solid adsorbents. A wide screening study with different commercially available adsorbents was carried out, in order to determine their capacity of pollutant removal from fish oil. Moreover, adsorption conditions were evaluated and optimized with using an experimental design and adjustment of the experimental results to response surfaces, obtaining removals rates of more than 99% of PCDD/Fs, 81% of dioxin-like PCBs, 70% of HCB, 41% of DDTs, 16% of marker PCBs and 10% of PBDEs. Finally, fish oil fatty acids were analyzed before and after the treatment with solid adsorbents, confirming that it did not affect its nutritive properties.

Original languageEnglish
Pages (from-to)1301-1307
Number of pages7
Issue number9
Publication statusPublished - Feb 2011


  • Activated carbon
  • Experimental design
  • Fish oil
  • POPs
  • Persistent organic pollutants
  • Removal


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