Inhibitory effect of long-chain fatty acids on biogas production and the 1 protective effect of reverse membrane bioreactors (RMBR)
Paper in proceedings, 2015

Abstract 1 Anaerobic digestion of lipid-containing wastes for biogas production is often hampered 2 by the inhibitory effect of long chain fatty acids (LCFAs). In this study, the inhibitory 3 effects of LCFAs (palmitic, stearic, and oleic acid) on biogas production as well as the 4 protective effect of a reverse membrane bioreactor (RMBR) against LCFAs was 5 examined in thermophilic batch digesters. The results showed that palmitic and oleic 6 acid with concentrations of 3.0 and 4.5 g/L resulted in >50% inhibition on the biogas 7 production, while stearic acid had an even stronger inhibitory effect. The encased cells 8 in the RMBR system were able to perform better in the presence of LCFAs. This system 9 exhibited a significantly lower percentage of inhibition than the free cell system, not 10 reaching over 50% at any LCFA concentration tested. 1

biogas

membrane bioreactor

Anaerobic digestion

inhibitor

LCFAs

Author

Dasa Kriswulan

Suspansa westman

Muhammad Kuyanto

Claes Niklasson

Chalmers, Chemistry and Chemical Engineering

Mohammad Taherzadeh Esfahani

New Horizons in Biotechnology 2015 in Trivandrum, India.

Driving Forces

Sustainable development

Areas of Advance

Transport

Energy

Subject Categories

Industrial Biotechnology

Biological Sciences

Chemical Process Engineering

Chemical Engineering

More information

Created

10/7/2017