Scrap

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Description

Large amounts of solid wastes are produced during fruit and vegetable processing. These are organic materials, including fruit and vegetables discarded during selection, and those from processes such as peeling or coring.

These typically have a high nutritional value and can be used as animal feed. Undesired materials discarded from the first processing steps include soil and extraneous plant material, spoiled food stocks, and some trimmings, peels, pits, seeds and pulp.

Up to 50 % of fruit and typically 10 to 30 % of raw vegetable materials are wasted during processing. Part of the waste goes to the waste water and significant amounts of solid wastes are also generated.

Solid waste produced during fruit and vegetable processing (EC,2006)

SolidWaste.jpg


Flow diagram of the demonstration biogas plant including co-digestion of orange wastes with cattle manure

BiogasPlant2.jpg
Source: AINIA


Valorisation techniques

  • Animal feed
  • Extraction of high added value products: pectines, Antioxidants (p.e lycopene from tomato), essential oils (p.e. ornage peel), enzymes, proteins,…
  • Biogas co-substrate (p.e. Orange peels)
  • Biomass (p.e almonds hulls)


References


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