TY - JOUR
T1 - Effect of pelleting process variables on physical properties and sugar yields of ammonia fiber expansion pretreated corn stover
AU - Hoover, Amber N.
AU - Tumuluru, Jaya Shankar
AU - Teymouri, Farzaneh
AU - Moore, Janette
AU - Gresham, Garold
N1 - Funding Information:
The authors would like to thank Chandra Nielson and Josh Videto from MBI for performing the AFEX pretreatment and the following INL colleagues for their assistance: Ian Bonner, Cynthia Breckenridge, Debra Bruhn, Karen Delezene-Briggs, Craig Conner, Rachel Emerson, Jeffrey Lacey, Sabrina Morgan, Manunya Phanphanich, Allison Ray, Tammy Trowbridge, and Neal Yancey. This research was supported by the US Department of Energy under Department of Energy Idaho Operations Office Contract No. DE-AC07-05ID14517.
PY - 2014/7
Y1 - 2014/7
N2 - Pelletization process variables, including grind size (4, 6. mm), 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 (6. mm) had similar or lower sugar yields. Pellets generated with 4. mm AFEX-treated corn stover, a 60. Hz die speed, and no preheating resulted in pellets with similar or greater density, durability, and sugar yields compared to other pelletization conditions.
AB - Pelletization process variables, including grind size (4, 6. mm), 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 (6. mm) had similar or lower sugar yields. Pellets generated with 4. mm AFEX-treated corn stover, a 60. Hz die speed, and no preheating resulted in pellets with similar or greater density, durability, and sugar yields compared to other pelletization conditions.
KW - Ammonia fiber expansion (AFEX)
KW - Corn stover
KW - Densification
KW - Enzymatic hydrolysis
KW - Pelletization
UR - http://www.scopus.com/inward/record.url?scp=84901241988&partnerID=8YFLogxK
U2 - 10.1016/j.biortech.2014.02.005
DO - 10.1016/j.biortech.2014.02.005
M3 - Article
C2 - 24844167
AN - SCOPUS:84901241988
SN - 0960-8524
VL - 164
SP - 128
EP - 135
JO - Bioresource Technology
JF - Bioresource Technology
ER -