Results 131 to 140 of about 2,213 (177)

Changes in efflux pump activity of Clostridium beijerinckii throughout ABE fermentation

Applied Microbiology and Biotechnology, 2021
Pumping toxic substances through a cytoplasmic membrane by protein transporters known as efflux pumps represents one bacterial mechanism involved in the stress response to the presence of toxic compounds. The active efflux might also take part in exporting low-molecular-weight alcohols produced by intrinsic cell metabolism; in the case of solventogenic
Barbora Branska, Maryna Vasylkivska, Hana Raschmanova, Katerina Jureckova, Karel Sedlar, Ivo Provaznik, Petra Patakova   +6 more
openaire   +2 more sources

Investigation of acetone-butanol-ethanol (ABE) fermentation by fluorescence

Journal of Fluorescence, 1994
Photophysical techniques have potential for the development of optical sensors in monitoring and controlling fermentors. In the particular case of acetone-butanol-ethanol (ABE) fermentation, carried out by bacteria of the speciesClostridium acetobutylicum, we have developed two studies based on fluorescence spectroscopy.
F, Baut, M, Fick, M L, Viriot, J C, André, M, Donner   +4 more
openaire   +2 more sources

Application of novel technology to the abe fermentation process

Applied Biochemistry and Biotechnology, 1992
Traditional technology for ABE production and recovery does not allow an economic process. However, use of a fluidized-bed reactor using immobilized cells in a continuous fermentation process, coupled with product removal and concentration by a membrane process, is a viable option.
N. Qureshi, I. S. Maddox
openaire   +1 more source

ABE fermentation products recovery methods—A review

Renewable and Sustainable Energy Reviews, 2015
Abstract Butanol has a great potential as a biofuel and to date a lot of research has been done both in terms of more efficient butanol production as well as in developing product recovery methods. Many of them deal with separation techniques which can be used for selective recovery of acetone, n-butanol and ethanol from model solutions and ...
Anna Kujawska, Jan Kujawski, Marek Bryjak, Wojciech Kujawski   +3 more
openaire   +1 more source

Pervaporative stripping of acetone, butanol and ethanol to improve ABE fermentation

Bioseparation, 2000
Acetone-butanol-ethanol fermentation by anaerobic bacterium C. acetobutylicum is a potential source for feedstock chemicals. The problem of product induced inhibition makes this fermentation economically infeasible. Pervaporation is studied as an effective separation technique to remove the toxic inhibitory products.
K, Jitesh, V G, Pangarkar, K, Niranjan
openaire   +2 more sources

Production of solvents (ABE fermentation) from whey permeate by continuous fermentation in a membrane bioreactor

Bioprocess Engineering, 1989
A continuous bioreactor where cells were recycled using a cross-flow microfiltration (CFM) membrane plant was investigated for the production of solvents (ABE fermentation) from whey permeate using Clostridium acetobutylicum P262. A tubular CFM membrane plant capable of being backflushed was used.
B. M. Ennis, I. S. Maddox
openaire   +1 more source

Competitive Adsorption of Butanol from ABE Fermentation Solution by Silicalite-1

Materials Science Forum, 2023
Biobutanol is an alternative energy that has been of great interest as a substitute for fossil fuel. It can be obtained from acetone-butanol-ethanol (ABE) fermentation with by-products of acetone and ethanol. In this work, the competitive kinetics of adsorption of butanol from ABE model solution was investigated on Silicalite-1 comparing to commercial ...
Woramath Tachanuwattanaphan, Supak Tontisirin   +1 more
openaire   +1 more source

Carbon footprint of biobutanol by ABE fermentation from corn and sugarcane

Renewable Energy, 2016
This article focuses on the saving potential of butanol as regards greenhouse gas (GHG) emissions. It is known that butanol can be used as a biofuel to decrease the greenhouse gas emissions from transport and that butanol may overcome blend wall limitations better than ethanol. However, the GHG emissions of butanol are not well known.
S. Väisänen, J. Havukainen, V. Uusitalo, M. Havukainen, R. Soukka, M. Luoranen   +5 more
openaire   +2 more sources

Enhanced Down-Stream Processing of Biobutanol in the ABE Fermentation Process

2016
Butanol is considered a superior biofuel, as it is more energy dense and less hygroscopic than bioethanol, resulting in higher possible blending ratios with gasoline. However, the production cost of the acetone-butanol-ethanol (ABE) fermentation process is high, mainly due to the low butanol titer, yield, and productivity in bioprocesses.
Bîldea, Costin S., Patraşcu, Iulian, Segovia Hernandez, J. G., Kiss, Anton A.   +3 more
openaire   +4 more sources

Electron receptor addition enhances butanol synthesis in ABE fermentation by Clostridium acetobutylicum

Bioresource Technology, 2018
The techniques for enhancing butanol production in ABE fermentation by Clostridium acetobutylicum generally focus on adding electron carrier to strengthen NADH synthesis, repressing hydrogenase by aerating CO, supplementing butyrate, etc. However, those methods suffer from the problems of total solvent decrease, high purification cost, using expensive ...
Jian, Ding, Hongzhen, Luo, Fang, Xie, Hao, Wang, Meng, Xu, Zhongping, Shi   +5 more
openaire   +2 more sources