The debate on environmental problems is leading toward a new consciousness about the need of a sustainable waste management and an Integrated Product Policy. Agro-food wastes could be an abundant and viable sources for obtaining green chemicals with high economical value as well as a renewable raw materials for producing bio-fuels with a favourable CO2 balance throughout biorefining processes. Olive-oil milling waste water (OMW) is considered one of the most polluting agro-food residue due to both seasonal production and high organic load (about 15%) which may be valorised by an integrated process in which natural chemicals, as biophenols for the nutraceutical market, can be recovered or bio-fuels, as methane or ethanol, by specific biological or chemical-physical transformations can be produced. OMW deriving from an ultrafiltration/reverse osmosis plant for the recovery of water is a very promising feedstock for the recovery of phenols using an adsorption/desorption process based on polymeric resins. Two different resins were studied for the recovery of the phenolic fraction: IRA 95, week ion exchange and XAD 16, neutral. The XAD 16 was more efficient for the recovery of the phenolic fraction with an overall extraction yield of 68% comparing with the 51% of IRA 95.
E. Ansaloni, F. Cornia, B. Bonsi, D. Zanichelli, L. Setti (2009). Bio-refining processes: recovery of secondary chemical buolding blocks from concentrated olive oil milling waste waters. s.l : EXORMA Edizioni.
Bio-refining processes: recovery of secondary chemical buolding blocks from concentrated olive oil milling waste waters
ANSALONI, ELENA;CORNIA, FRANCESCA;BONSI, BARBARA;ZANICHELLI, DARIO;SETTI, LEONARDO
2009
Abstract
The debate on environmental problems is leading toward a new consciousness about the need of a sustainable waste management and an Integrated Product Policy. Agro-food wastes could be an abundant and viable sources for obtaining green chemicals with high economical value as well as a renewable raw materials for producing bio-fuels with a favourable CO2 balance throughout biorefining processes. Olive-oil milling waste water (OMW) is considered one of the most polluting agro-food residue due to both seasonal production and high organic load (about 15%) which may be valorised by an integrated process in which natural chemicals, as biophenols for the nutraceutical market, can be recovered or bio-fuels, as methane or ethanol, by specific biological or chemical-physical transformations can be produced. OMW deriving from an ultrafiltration/reverse osmosis plant for the recovery of water is a very promising feedstock for the recovery of phenols using an adsorption/desorption process based on polymeric resins. Two different resins were studied for the recovery of the phenolic fraction: IRA 95, week ion exchange and XAD 16, neutral. The XAD 16 was more efficient for the recovery of the phenolic fraction with an overall extraction yield of 68% comparing with the 51% of IRA 95.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
