Effect of pelleting process variables on physical properties and sugar yields of ammonia fiber expansion pretreated corn stover.
Pelletization process variables, including grind size (4, 6mm), die speed (40, 50, 60 Hz), and preheating (none, 70°C), were evaluated to understand their effect on pellet quality attributes and sugar yields of ammonia fiber expansion (AFEX) pretreated biomass. The bulk density of the pelletized AFEX corn stover was three to six times greater compared to untreated and AFEX-treated corn stover. Also, the durability of the pelletized AFEX corn stover was>97.5% for all pelletization conditions studied except for preheated pellets. Die speed had no effect on enzymatic hydrolysis sugar yields of pellets. Pellets produced with preheating or a larger grind size (6mm) had similar or lower sugar yields. Pellets generated with 4mm AFEX-treated corn stover, a 60Hz die speed, and no preheating resulted in pellets with similar or greater density, durability, and sugar yields compared to other pelletization conditions.
Idaho National Laboratory, Biofuels and Renewable Energy Technologies, P.O. Box 1625, Idaho Falls, ID 83415, USA. Electronic address: amber.hoover@inl.gov.
Amber N
AN
Hoover
Idaho National Laboratory, Biofuels and Renewable Energy Technologies, P.O. Box 1625, Idaho Falls, ID 83415, USA. Electronic address: jayashankar.tumuluru@inl.gov.
Jaya Shankar
JS
Tumuluru
MBI International, 3815 Technology Boulevard, Lansing, MI 48910, USA. Electronic address: teymouri@mbi.org.
Farzaneh
F
Teymouri
MBI International, 3815 Technology Boulevard, Lansing, MI 48910, USA. Electronic address: moore@mbi.org.
Janette
J
Moore
Idaho National Laboratory, Biofuels and Renewable Energy Technologies, P.O. Box 1625, Idaho Falls, ID 83415, USA. Electronic address: garold.gresham@inl.gov.
Garold
G
Gresham
D000641:Ammonia / Q000494:pharmacology*; D001709:Biotechnology / Q000379:methods*; D002241:Carbohydrates / Q000096:biosynthesis*; D005947:Glucose / Q000096:biosynthesis; D006813:Humidity; D006868:Hydrolysis; D010316:Particle Size; D014866:Waste Products; D014994:Xylose / Q000096:biosynthesis; D003313:Zea mays / Q000737:chemistry* / Q000187:drug effects / Q000648:ultrastructure
D002241:Carbohydrates; D014866:Waste Products; D000641:Ammonia; D014994:Xylose; D005947:Glucose
Ammonia fiber expansion (AFEX); Corn stover; Densification; Enzymatic hydrolysis; Pelletization