TY - JOUR
T1 - Anaerobic digestate valorization beyond agricultural application
T2 - Current status and prospects
AU - Wang, Wei
AU - Chang, Jo-Shu
AU - Lee, Duu-Jong
PY - 2023/4
Y1 - 2023/4
N2 - The flourishment of anaerobic digestion emphasizes the importance of digestate valorization, which is essential in determining the benefits of the anaerobic digestion process. Recently the perception of digestate gradually shifted from waste to products to realize the concept of circular economy and maximize the benefits of digestate valorization. Land application of digestate should be the simplest way for digestate valorization, while legislation restriction and environmental issues emphasize the necessity of novel valorization methods. This review then outlined the current methods for solid/liquid digestate valorization, nutrient recovery, microalgae cultivation, and integration with biological and thermochemical processes. The novel valorization routes proposed were summarized, with their challenges and prospects being discussed. Integrating anaerobic digestion with thermochemical methods such as hydrothermal carbonization should be a promising strategy due to the potential market value of hydrochar/biochar-derived products. © 2023 Elsevier Ltd
AB - The flourishment of anaerobic digestion emphasizes the importance of digestate valorization, which is essential in determining the benefits of the anaerobic digestion process. Recently the perception of digestate gradually shifted from waste to products to realize the concept of circular economy and maximize the benefits of digestate valorization. Land application of digestate should be the simplest way for digestate valorization, while legislation restriction and environmental issues emphasize the necessity of novel valorization methods. This review then outlined the current methods for solid/liquid digestate valorization, nutrient recovery, microalgae cultivation, and integration with biological and thermochemical processes. The novel valorization routes proposed were summarized, with their challenges and prospects being discussed. Integrating anaerobic digestion with thermochemical methods such as hydrothermal carbonization should be a promising strategy due to the potential market value of hydrochar/biochar-derived products. © 2023 Elsevier Ltd
KW - Anaerobic digestion
KW - Hydrothermal carbonization
KW - Microalgae
KW - Nutrient recovery
KW - Pyrolysis
UR - http://www.scopus.com/inward/record.url?scp=85148109192&partnerID=8YFLogxK
UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-85148109192&origin=recordpage
U2 - 10.1016/j.biortech.2023.128742
DO - 10.1016/j.biortech.2023.128742
M3 - RGC 21 - Publication in refereed journal
C2 - 36791977
SN - 0960-8524
VL - 373
JO - Bioresource Technology
JF - Bioresource Technology
M1 - 128742
ER -