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NAXOS 2018 1
Economia linea re e circolare
NAXOS 2018 2
The biorefinery of household food waste David Bolzonella Department - - PowerPoint PPT Presentation
The biorefinery of household food waste David Bolzonella Department - - PowerPoint PPT Presentation
University of Verona, Department of Biotechnology The biorefinery of household food waste David Bolzonella Department of Biotechnology University of Verona NAXOS 2018 1 University of Verona, Department of Biotechnology Economia linea re e circolare
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The role of bioeconomy in the circular economy ….
3 NAXOS 2018
Source Ellen McArtur Foundation
University of Verona, Department of Biotechnology
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The role of bioeconomy in the circular economy …. primary biomass and residues/waste
4 NAXOS 2018
University of Verona, Department of Biotechnology
Source Ellen McArtur Foundation
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NAXOS 2018 5
University of Verona, Department of Biotechnology
Households Restaurants Canteens markets Food processing byproducts (waste) (seasonal, site specific ….) Household food waste : is food and kitchen waste from households, restaurants, caterers and retail premises, and comparable waste from food processing plants.
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Specific features of household food waste
- Ubiquitous
- avg. production of 176 kg per person per year (EU‐28)
- High carbon content: 250 gCOD per kg (variable), 75% of mass is water
- N & P contents at 5‐6 and 1‐2 g/kg HFW, respectively
- Where segregate collection is implemented a considerable load of
(«clean») material is available
University of Verona, Department of Biotechnology
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NAXOS 2018 7
University of Verona, Department of Biotechnology
Household food waste has the perfect characteristics for bio‐processing …. …. if it is separately collected
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NAXOS 2018 8
Disposal routes for Municipal Waste in Europe
Landfilling still dominant ….
University of Verona, Department of Biotechnology University of Verona, Department of Biotechnology
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Fo Food Wa Waste and and clim climate chang change
University of Verona, Department of Biotechnology
(courtesy of David Newman)
NAXOS 2018 9
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Big bins in the streets (urban areas) Implementation of different collection strategies ….
University of Verona, Department of Biotechnology
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Door to door collection (kerbside)
University of Verona, Department of Biotechnology
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NAXOS 2018 12
University of Verona, Department of Biotechnology
455 out of 581 municipalities in the Region passed the 65% separate collection treshold Separate collection (RD)
- f
household food wate
Separate collection %
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Percentage of non compostable material into organic waste (2012‐2013)
Door to door Door to door Bins in the Mixed collection Non tourist area Tourist area Street System
NAXOS 2018 13
Presence of inert material in segregated food waste (%) as a function of different collection schemes
University of Verona, Department of Biotechnology
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The PRESENT bioeconomy: Compost & biogas (bioenergy, biofuels)
University of Verona, Department of Biotechnology
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High quality compost
University of Verona, Department of Biotechnology
Selling price in the range 3 – 6 € per ton
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Biogas for co‐generation of heat and power or biomethane production
University of Verona, Department of Biotechnology
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NAXOS 2018 17
University of Verona, Department of Biotechnology
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NAXOS 2018 18
The FUTURE bioeconomy: Biobased chemicals, compost, biogas, bioenergy, biofuels, nutrients
University of Verona, Department of Biotechnology
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NAXOS 2018 19
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University of Verona, Department of Biotechnology
NAXOS 2018
Organic waste Recovery techniques + Biocatalysis Bio‐polymers Bio‐plastics High added value chemicals Nutrients Proteins AD Bio‐polymers Biofuels Bio‐gas‐to‐liquid Post Treatments
Environment
Compost Bio‐polymers Bio‐plastics High added value chemicals Nutrients Proteins
Household food wate biorefinery
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NAXOS 2018 21
University of Verona, Department of Biotechnology
HFW – to – VFA, H2, CH4, PHA ….
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University of Verona, Department of Biotechnology
4000 8000 12000 16000 20000 24000 28000 32000 15 30 45 60 75 90 105120135150165180195210225240255270285300315
TOTAL VFAs CONCENTRATION (mg/L)
TIME (d)
RUN 1 RUN 2 RUN 3 RUN 4
22
OLR, 21 pH 3,8 OLR, 21 pH 5,5 OLR, 10 pH 5,5 OLR, 10 pH 7,0
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Fermentation in continuous: RESULTS
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University of Verona, Department of Biotechnology
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Biogas – to – Liquid
Or acetic acid, methanol, ethanol …..
University of Verona, Department of Biotechnology
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University of Verona, Department of Biotechnology
Source: Newlight
Biogas (CH4) – to – Biopolymers (PHB)
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We need nutrients ! 9 billion people Foto Campi …….
University of Verona, Department of Biotechnology
Digestate – to – Nutrients
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NAXOS 2018 27
University of Verona, Department of Biotechnology
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University of Verona, Department of Biotechnology
End of waste criteria and specific regulations for waste derived biobased products
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University of Verona, Department of Biotechnology Take home messages:
- 1. Household food waste is largely available and have suitable
characteristics as feedstock for biorefinery platforms but segragate collection is crucial !
- 2. We have the (bio)technologies to recovery biobased products,
proteins, nutrients, biofuels ……..
- 3. We need to clearly define end of waste criteria and the safety