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Bioresour Technol

Title:		Overcoming nutrient loss during volatile fatty acid recovery from fermentation media by addition of electrodialysis to a polytetrafluoroethylene membrane stack
Author(s):		Chalmers Brown R; Tuffou R; Massanet Nicolau J; Dinsdale R; Guwy A;
Address:		"University of South Wales, Glyntaff, Pontypridd, Rhondda Cynon Taff CF37 4BD, UK. University of South Wales, Glyntaff, Pontypridd, Rhondda Cynon Taff CF37 4BD, UK. Electronic address: jaime.massanet@southwales.ac.uk"
Journal Title:		Bioresour Technol
Year:		2020
Volume:		20191204
Issue:
Page Number:		122543 -
DOI:		10.1016/j.biortech.2019.122543
ISSN/ISBN:		1873-2976 (Electronic) 0960-8524 (Linking)
Abstract:		"This research investigated the use of an innovative polytetrafluoroethylene (PTFE) membrane configuration coupled to electrodialysis for the in-situ removal of Volatile Fatty Acids (VFAs) from a mixed culture bioreactor. It was shown that by stacking the PTFE membranes to increase the active membrane surface area, shortened VFA recovery times was seen. The addition of electrodialysis to the PTFE membrane stack enabled the continuous extraction of VFAs from fermentation media whilst retaining essential nutrients and organic compounds in the diluate stream. Ammonium, phosphate and nitrate remained in the diluate chamber and did not cross the PTFE membrane stack. Up to 98% of total VFA recovery was achieved with the PTFE and electrodialysis system. The process was shown to extract from a reservoir of low VFA concentration to a reservoir with a VFA concentration 10 times higher. These results show that the addition of electrodialysis to PTFE provides a robust solution for the in-situ extraction of VFAs from fermentation media within bioreactors to support the demand for sustainable fuels and green chemical feedstocks"
Keywords:		"Bioreactors *Fatty Acids, Volatile Fermentation Hydrogen-Ion Concentration Nutrients *Polytetrafluoroethylene Sewage Electrodialysis Extraction Fermentation media Ptfe Volatile fatty acids;"
Notes:		"MedlineChalmers Brown, Rhiannon Tuffou, Romain Massanet Nicolau, Jaime Dinsdale, Richard Guwy, Alan eng England 2020/01/14 Bioresour Technol. 2020 Apr; 301:122543. doi: 10.1016/j.biortech.2019.122543. Epub 2019 Dec 4"