13C NMR study of the effect of aerobic treatment of olive mill wastewater OMW on its lipid-free contentReport as inadecuate




13C NMR study of the effect of aerobic treatment of olive mill wastewater OMW on its lipid-free content - Download this document for free, or read online. Document in PDF available to download.

1 ECOLAB - Laboratoire Ecologie Fonctionnelle et Environnement - ECOLAB 2 École nationale supérieure agronomique de Toulouse ENSAT 3 Equipe Ecologie Végétale, Sol et Environnement, Département de Biologie, Faculté des Sciences Semlalia,X

Abstract : Olive mill wastewater was treated by an aerobic bio-process at different values of pH with or without addition of lime, for 45 days on a laboratory scale, to evaluate the reduction of the organic load. The lipid content showed an appreciable change in relation to the applied treatment both for total lipids and for the different fractions neutral lipids, monoglycerides and phospholipids. 13 C NMR spectroscopy was performed on initial and final samples both raw and after lipid extraction. The main spectral differences were observed in the C-alkyl region 0–50 ppm, in the C O-alkyl-N-alkyl region 50–110 ppm, and in the C-carboxylic 160–200 ppm region, providing information on the alterations occurring in the different biochemical entities composing this complex biomatrix e.g. lipids and carbohydrates according to the treatment.

Keywords : Olive mill wastewater Aerobic bio-process Lime treatment Lipids 13 C NMR spectroscopy





Author: H. El Hajjouji - G Merlina - E Pinelli - P Winterton J.-C Revel M Hafidi -

Source: https://hal.archives-ouvertes.fr/



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