Next Article in Journal
Fabrication of Defect-Free Cellulose Acetate Hollow Fibers by Optimization of Spinning Parameters
Previous Article in Journal
Polymer Electrolyte Membranes for Water Photo-Electrolysis
Previous Article in Special Issue
Impact of Coagulant and Flocculant Addition to an Anaerobic Dynamic Membrane Bioreactor (AnDMBR) Treating Waste-Activated Sludge
Article Menu

Export Article

Open AccessArticle
Membranes 2017, 7(2), 26;

Anaerobic Membrane Bioreactor for Continuous Lactic Acid Fermentation

Institute of Bioprocess Engineering and Membrane Technology, University of Applied Sciences Mittelhessen, Giessen 35390, Germany
Department of Chemical Engineering, Kansas State University, Manhattan, KS 66506, USA
Faculty of Biology and Chemistry, Justus Liebig University Giessen, Giessen 35390, Germany
Author to whom correspondence should be addressed.
Academic Editor: Baoqiang Liao
Received: 31 January 2017 / Revised: 19 April 2017 / Accepted: 27 April 2017 / Published: 3 May 2017
(This article belongs to the Special Issue Anaerobic Membrane Bioreactors)
Full-Text   |   PDF [2893 KB, uploaded 3 May 2017]   |  


Membrane bioreactor systems can enhance anaerobic lactic acid fermentation by reducing product inhibition, thus increasing productivity. In batch fermentations, the bioconversion of glucose is strongly inhibited in the presence of more than 100 g·L−1 lactic acid and is only possible when the product is simultaneously removed, which can be achieved by ceramic membrane filtration. The crossflow velocity is a more important determinant of flux than the transmembrane pressure. Therefore, to stabilize the performance of the membrane bioreactor system during continuous fermentation, the crossflow velocity was controlled by varying the biomass concentration, which was monitored in real-time using an optical sensor. Continuous fermentation under these conditions, thus, achieved a stable productivity of ~8 g·L−1·h−1 and the concentration of lactic acid was maintained at ~40 g·L−1 at a dilution rate of 0.2 h−1. No residual sugar was detected in the steady state with a feed concentration of 50 g·L−1. View Full-Text
Keywords: anaerobic membrane bioreactor; lactic acid; membrane filtration; membrane fouling; continuous fermentation; optical sensor anaerobic membrane bioreactor; lactic acid; membrane filtration; membrane fouling; continuous fermentation; optical sensor

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

Share & Cite This Article

MDPI and ACS Style

Fan, R.; Ebrahimi, M.; Czermak, P. Anaerobic Membrane Bioreactor for Continuous Lactic Acid Fermentation. Membranes 2017, 7, 26.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics



[Return to top]
Membranes EISSN 2077-0375 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top