What are the main mechanical and advanced pretreatment options?
sourced
Hammer mills, choppers and extruders reduce size mechanically, with twin-screw extrusion additionally shearing and defibrating. Thermal hydrolysis and steam explosion use heat and pressure to disrupt lignocellulose, while alkali, lime and enzymatic routes act chemically. Thermal-pressure hydrolysis has been shown to raise straw methane yield about 32% over milling alone.
- Source
- USPTO thermal-pressure-hydrolysis patent
- sourced
- Traceable to a named source.
- Level
- Practitioner — Operating numbers, ranges and failure modes.
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