TY - JOUR
T1 - Microbial electrolysis using aqueous fractions derived from Tail-Gas Recycle Pyrolysis of willow and guayule
AU - Satinover, Scott J.
AU - Elkasabi, Yaseen
AU - Nuñez, Alberto
AU - Rodriguez, Miguel
AU - Borole, Abhijeet P.
N1 - Publisher Copyright:
© 2018 Elsevier Ltd
PY - 2019/2
Y1 - 2019/2
N2 - This study investigated microbial electrolysis of two aqueous phase waste products derived from guayule and willow generated from Tail Gas Recycle Pyrolysis (TGRP). The highest average current density achieved was 5.0 ± 0.7 A/m2 and 1.8 ± 0.2 A/m2 for willow and guayule respectively. Average hydrogen productivity was 5.0 ± 1.0 L/L-day from willow and 1.5 ± 0.2 L/L-day for guayule. Willow also generated higher coulombic efficiency, anode conversion efficiency, and hydrogen recovery than guayule at most organic loading conditions. Compounds investigated exceeded 80% degradation, which included organic acids, sugar derivatives, and phenolics. Mass spectrometric analysis demonstrated the accumulation of a long chain amine not present in either substrate before treatment, and the persistence of several peptide residues resulting from the TGRP process. New biorefineries may one day capitalize on this otherwise discarded byproduct of TGRP, further improving the potential applications and value of microbial electrolysis towards energy production.
AB - This study investigated microbial electrolysis of two aqueous phase waste products derived from guayule and willow generated from Tail Gas Recycle Pyrolysis (TGRP). The highest average current density achieved was 5.0 ± 0.7 A/m2 and 1.8 ± 0.2 A/m2 for willow and guayule respectively. Average hydrogen productivity was 5.0 ± 1.0 L/L-day from willow and 1.5 ± 0.2 L/L-day for guayule. Willow also generated higher coulombic efficiency, anode conversion efficiency, and hydrogen recovery than guayule at most organic loading conditions. Compounds investigated exceeded 80% degradation, which included organic acids, sugar derivatives, and phenolics. Mass spectrometric analysis demonstrated the accumulation of a long chain amine not present in either substrate before treatment, and the persistence of several peptide residues resulting from the TGRP process. New biorefineries may one day capitalize on this otherwise discarded byproduct of TGRP, further improving the potential applications and value of microbial electrolysis towards energy production.
KW - Bioelectrochemical hydrogen production
KW - Biomass energy
KW - Organic conversion
KW - Pyrolysis aqueous phase
KW - Renewable energy
UR - http://www.scopus.com/inward/record.url?scp=85057895207&partnerID=8YFLogxK
U2 - 10.1016/j.biortech.2018.11.099
DO - 10.1016/j.biortech.2018.11.099
M3 - Article
C2 - 30529336
AN - SCOPUS:85057895207
SN - 0960-8524
VL - 274
SP - 302
EP - 312
JO - Bioresource Technology
JF - Bioresource Technology
ER -
