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Chipper Harvester for Small Trees
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Mallee Eucalypt production for bioenergy – research and
harvesting
Paul TurnbullWoody Crops Program Leader
The Future Farm Industries CRCDepartment of Primary Industries
[email protected] 0409 402 179
Presented atFarm Forestry and Firewood Machinery Expo
8 April 2011
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Harvest and Haulage is the major expense for the Delivered Cost of Biomass
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3 m
6 m
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Over 100 tonnes per hour Average 60 t/h (24/7) for 5 to 6 months
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Over 200 t/h with up to ~ 1000 hp
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Flexible crop stems for horizontal feedUses a chopper, not a chipper
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Products: 1. Biofuel or Bioenergy2. Biochar3. Cineole4. Co-products and biomaterials5. Sequestered carbon
Woody crop production
Processing
Harvest
Chip
Harvesting – supply chain to processing
Transport
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Surface run-off or water harvest
Perched or seasonal groundwater flow
Boundary to zone of permanently moist
subsoil
Leakage into root zone
~20m 7m ~20m
>10m
Water capture by mallee belts
Woody crop belt
Rainfall Open paddock under annual crop
Lateral root or competition zone
Deep permanent groundwater table
Groundwater influx to root zone??
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Biomass and Carbon from Harvested Mallees
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Cashflow of mallee belts growing carbon and biomassand the opportunity cost of land in agriculture
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Case 1-Canola Case 2 - Mustard Case 3 - Mustard Corn Mallee
En
erg
y R
aio
(O
utp
ut/
Inp
ut,
MJ/M
J)
33.5 GJ/ha 46.4 GJ/ha 25.8 GJ/ha 141.9 GJ/ha 206.3 GJ/ha
Energy ratio – the advantage of woody biomass
Energy productivity
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Assumptions
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Harvest and Haulage – Biomass Cost
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Woody Crop Research – part of a network seeking a future mallee biomass industry