TY - JOUR
T1 - Anaerobic co-digestion of agricultural wastes toward circular bioeconomy
AU - Pan, Shu Yuan
AU - Tsai, Cheng Yen
AU - Liu, Chen Wuing
AU - Wang, Sheng Wei
AU - Kim, Hyunook
AU - Fan, Chihhao
N1 - Publisher Copyright:
© 2021 The Authors
PY - 2021/7/23
Y1 - 2021/7/23
N2 - A huge amount of agricultural wastes and waste activated-sludge are being generated every year around the world. Anaerobic co-digestion (AcD) has been considered as an alternative for the utilization of organic matters from such organic wastes by producing bioenergy and biochemicals to realize a circular bioeconomy. Despite recent advancement in AcD processes, the effect of feedstock compositions and operating conditions on the biomethane production processe has not been critically explored. In this paper, we have reviewed the effects of feedstock (organic wastes) characteristics, including particle size, carbon-to-nitrogen ratio, and pretreatment options, on the performance of an anaerobic digestion process. In addition, we provided an overview of the effect of key control parameters, including retention time, temperature, pH of digestate, volatile fatty acids content, total solids content, and organic loading rate. Lastly, based on the findings from the literature, we have presented several perspectives and prospects on priority research to promote AcD to a steppingstone for a circular bioeconomy.
AB - A huge amount of agricultural wastes and waste activated-sludge are being generated every year around the world. Anaerobic co-digestion (AcD) has been considered as an alternative for the utilization of organic matters from such organic wastes by producing bioenergy and biochemicals to realize a circular bioeconomy. Despite recent advancement in AcD processes, the effect of feedstock compositions and operating conditions on the biomethane production processe has not been critically explored. In this paper, we have reviewed the effects of feedstock (organic wastes) characteristics, including particle size, carbon-to-nitrogen ratio, and pretreatment options, on the performance of an anaerobic digestion process. In addition, we provided an overview of the effect of key control parameters, including retention time, temperature, pH of digestate, volatile fatty acids content, total solids content, and organic loading rate. Lastly, based on the findings from the literature, we have presented several perspectives and prospects on priority research to promote AcD to a steppingstone for a circular bioeconomy.
KW - Applied microbiology
KW - Biotechnology
KW - Chemical engineering
KW - Microbiology
KW - Sustainability aspects of food production
UR - http://www.scopus.com/inward/record.url?scp=85108564909&partnerID=8YFLogxK
U2 - 10.1016/j.isci.2021.102704
DO - 10.1016/j.isci.2021.102704
M3 - Review article
AN - SCOPUS:85108564909
SN - 2589-0042
VL - 24
JO - iScience
JF - iScience
IS - 7
M1 - 102704
ER -