Reduction of organic pollutants in Olive Mill Wastewater by using different mineral substrates as adsorbents
C A Santi1, S Cortes, L P D'Acqui
1Istituto per lo Studio degli Ecosistemi - CNR, Via Madonna del Piano n 10, 50019 Sesto Fiorentino (FI), Italy. santi@ise.cnr.it
Abstract:
Physico-chemical treatments of Olive Mill Wastewater (OMW) were carried out using different inorganic substrates such as soil, bentonite and zeolite, in order to assess their efficiency to remove the organic load from OMW, in particular polyphenols (Pp) and to reduce chemical oxygen demand (COD). The effect of repeated treatments of OMW with different minerals and the possibility of regenerating them by the Low Temperature Ashing (LTA) technique, an eco-friendly procedure, for the reutilization of treated OMW, has been investigated. Zeolite was found to be highly efficient in adsorbing Pp and COD from OMW and was easy to regenerate by means of the LTA technique.
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