TY - JOUR
T1 - Fermentative volatile fatty acid production and recovery from grass using a novel combination of solids separation, pervaporation, and electrodialysis technologies
AU - Jones, Rhys Jon
AU - Massanet-Nicolau, Jaime
AU - Fernandez Feito, Rodrigo
AU - Dinsdale, Richard
AU - Guwy, Alan
N1 - Funding Information:
This work was carried out with financial assistance from the following funds: EU Horizon 2020 (RES URBIS under grant agreement 730349); FLEXIS (WEFO 80835).
Publisher Copyright:
© 2021
PY - 2021/12/1
Y1 - 2021/12/1
N2 - A novel combination of solids screening, centrifugation, microfiltration, pervaporation, and electrodialysis were used for the targeted and exclusive recovery of volatile fatty acids (VFAs) from an 80 L bioreactor. The bioreactor was continually–fed with grass waste, containing 40 g L–1 total solids, over three, seven–day, hydraulic retention times. A VFA solution with a concentration up to 4,500 mg L–1 was recovered. VFA yields were also increased from 707 to 875 mg of VFA per gram of volatile solids by alleviating end–product inhibition. Both these accomplishments are significant step–changes in adding value to waste, and increased substrate utilisation rates will be attractive from a waste remediation perspective.
AB - A novel combination of solids screening, centrifugation, microfiltration, pervaporation, and electrodialysis were used for the targeted and exclusive recovery of volatile fatty acids (VFAs) from an 80 L bioreactor. The bioreactor was continually–fed with grass waste, containing 40 g L–1 total solids, over three, seven–day, hydraulic retention times. A VFA solution with a concentration up to 4,500 mg L–1 was recovered. VFA yields were also increased from 707 to 875 mg of VFA per gram of volatile solids by alleviating end–product inhibition. Both these accomplishments are significant step–changes in adding value to waste, and increased substrate utilisation rates will be attractive from a waste remediation perspective.
KW - Anaerobic Digestion
KW - Biorefining
KW - VFAs
KW - Electrodialysis
KW - Platform Chemicals
U2 - 10.1016/j.biortech.2021.125926
DO - 10.1016/j.biortech.2021.125926
M3 - Article
C2 - 34536837
SN - 0960-8524
VL - 342
JO - Bioresource Technology
JF - Bioresource Technology
IS - 00
M1 - 125926
ER -