CS	corn stalk
AD	anaerobic digestion
MAD	mesophilic anaerobic digestion
TAD	thermophilic anaerobic digestion
CSTR	completely stirred tank reactor
HRT	hydraulic retention time
OL	organic loading rate
MLSS	mixed liquid suspended solid
TS	total solids
VS	volatile solids
TC	total carbon
TN	total nitrogen
LCH	lignin, cellulose, hemicellulose
DBP	daily biogas production
DMP	daily methane production
AN	ammonia nitrogen
VFA	volatile fatty acid
TAC	total alkalinity concentration
Ei	energy input
Ei,h	energy for heating
Ei,m	energy for mixing
Ei,p	energy for pumping
Eo	energy output
Ro/I	ratio of Eo to Ei