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Incompatible feedstocks

We often receive inquiries about feedstocks other than wood chips and nut shells that are compatible with the v.2 PP30. Wood chips and most kinds of nut shells are compatible. We have tested and found excellent performance with a wide variety of both hard and soft woods, and with walnut, pecan, hazelnut, coconut, and macadamia shells, however:

The following nut products are not compatible:

    • almond husks and shells (too much silica)
    • peanut shells (too much ash)
    • pistachio shells (pieces are too small)
    • cashew husks and cashew apples (not chemically compatible)
The v.3 reactor currently used in the Charpallet is much more forgiving about particle size, requiring less feedstock preparation, and expanding the types of feedstocks that may be compatible; for instance, we expect that it will be able to run pistachio shells. Testing is still in progress and we will update this page with v.3 data as it becomes available.

The following feedstocks are definitely not compatible with the PP30:

    • Municipal Solid Waste (MSW)
    • Household Solid Waste (plastics, kitchen waste, etc.)
    • Wood pellets and briquettes (pellets and briquettes disintegrate and choke the reactor)
    • Saw dust, including pellets made from sawdust
    • Rice husk, rice straw,
    • Wheat husk, wheat straw
    • Corn Stover and straw of any kind
    • Chicken litter, and manure of any kind
    • Sugar cane bagasse (not even the pellets)
    • Shredded Tires, plastics of any kind
    • Olive Pomace, Olive Pits
    • Hemp canes and byproducts (not even the pellets)
    • Date Pits, Palm fronds or empty fruit palm fruit bunches
    • Coconut husk (coconut shells work well, just not the husk)
    • Mushroom growing media
    • Coal or charcoal

For any additional inquiries please contact our Director of Sales, m

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