TY - JOUR
T1 - Removal and recovery of inhibitory volatile fatty acids from mixed acid fermentations by conventional electrodialysis
AU - Jones, Rhys Jon
AU - Massanet-Nicolau, Jaime
AU - Guwy, Alan
AU - Premier, Giuliano C.
AU - Dinsdale, Richard M.
AU - Reilly, Matthew
PY - 2015/8/1
Y1 - 2015/8/1
N2 - Hydrogen production during dark fermentation is inhibited by the co-production of volatile fatty acids (VFAs) such as acetic and n-butyric acid. In this study, the effectiveness of conventional electrodialysis (CED) in reducing VFA concentrations in model solutions and hydrogen fermentation broths is evaluated. This is the first time CED has been reported to remove VFAs from hydrogen fermentation broths. During 60min of operation CED removed up to 99% of VFAs from model solutions, sucrose-fed and grass-fed hydrogen fermentation broths, containing up to 1200mgl-1 each of acetic acid, propionic acid, i-butyric acid, n-butyric acid, i-valeric acid, and n-valeric acid. CED's ability to remove VFAs from hydrogen fermentation broths suggests that this technology is capable of improving hydrogen yields from dark fermentation.
AB - Hydrogen production during dark fermentation is inhibited by the co-production of volatile fatty acids (VFAs) such as acetic and n-butyric acid. In this study, the effectiveness of conventional electrodialysis (CED) in reducing VFA concentrations in model solutions and hydrogen fermentation broths is evaluated. This is the first time CED has been reported to remove VFAs from hydrogen fermentation broths. During 60min of operation CED removed up to 99% of VFAs from model solutions, sucrose-fed and grass-fed hydrogen fermentation broths, containing up to 1200mgl-1 each of acetic acid, propionic acid, i-butyric acid, n-butyric acid, i-valeric acid, and n-valeric acid. CED's ability to remove VFAs from hydrogen fermentation broths suggests that this technology is capable of improving hydrogen yields from dark fermentation.
KW - Anaerobic digestion
KW - Electrodialysis
KW - Fermentation
KW - Hydrogen
KW - Volatile fatty acids
U2 - 10.1016/j.biortech.2015.04.001
DO - 10.1016/j.biortech.2015.04.001
M3 - Article
C2 - 25898090
AN - SCOPUS:84927772144
SN - 0960-8524
VL - 189
SP - 279
EP - 284
JO - Bioresource Technology
JF - Bioresource Technology
ER -