Results 261 to 270 of about 68,407 (289)

Glycerolysis of Crude Methyl Esters with Crude Glycerol from Biodiesel Production

Journal of the American Oil Chemists' Society, 2013
AbstractGlycerolysis of crude fatty acid methyl esters (FAME) with crude glycerol derived from biodiesel production was performed. The reaction was accomplished at temperatures ranging between 160 and 200 °C and molar ratios of FAME to glycerol ranging between 1.5 and 3.0.
David A. Echeverri, Fernando Cardeño, Luis A. Rios   +2 more
openaire   +1 more source

Lipid Production for Biodiesel from Sludge and Crude Glycerol

Water Environment Research, 2017
ABSTRACT: Oleaginous yeast Trichosporon oleaginosus was studied for lipid production using municipal sludge with or without fortification of crude glycerol in a 15‐L fermenter. The maximum lipid content (concentration) was 32.0% w/w (9.35 g/L), 33.6% (10.13 g/L), 33.3% (9.13 g/L), and 33.1% (9.03 g/L) w/w with the addition of 25, 50, 100, and 150 g/L ...
Zhang, Xiaolei, Chen, Jiaxin, Yan, Song, Tyagi, Rajeshwar Dayal, Surampalli, Rao Y., Li, Ji   +5 more
openaire   +3 more sources

Reactive Vaporization of Crude Glycerol in a Fluidized Bed Reactor

Industrial & Engineering Chemistry Research, 2010
Crude glycerol is a coproduct of the trans-esterification of vegetable oil and animal fat to biodiesel that contains as much as 5% salt. Processing the glycerol to value added products often requires an expensive distillation step. In this work, we propose a new process in which crude liquid glycerol is fed directly to a fluidized bed, vaporizes, and ...
B. Rafii Sereshki, S.-J. Balan, G. S. Patience, J.-L. Dubois   +3 more
openaire   +2 more sources

Long-term monodigestion of crude glycerol in a UASB reactor

Bioresource Technology, 2013
The aim of this study was to discuss the experience from long-term operation of a laboratory UASB reactor inoculated with suspended or granulated biomass for the treatment of different kinds of crude glycerol in undiluted or diluted state. The UASB reactor was operated under mesophilic conditions.
Miroslav, Hutňan, Nina, Kolesárová, Igor, Bodík, Marianna, Czölderová   +3 more
openaire   +2 more sources

Bioethanol Production by Crude Glycerol Fermentation

2017
An innovative biological process to produce ethanol and hydrogen from crude glycerol has been technically and economically assessed. Results shows an ethanol/glycerol yield of 1/3 kg/kg and a hydrogen/glycerol yield of 1/5 Nm3/kg. The cost of production of ethanol (without considering revenues from hydrogen produced) is in line with the market and was ...
Salladini, A., Maschiocchi, B., Morico, B., Martorelli, F., Iaquaniello, G., Zarli, A.   +5 more
openaire   +1 more source

Polyols and polyurethane foams from acid‐catalyzed biomass liquefaction by crude glycerol: Effects of crude glycerol impurities

Journal of Applied Polymer Science, 2014
ABSTRACTThe effects of crude glycerol impurities on acid‐catalyzed biomass liquefaction by crude glycerol were investigated. Salts (i.e., NaCl and Na2SO4) decreased biomass conversion ratios and negatively affected the properties of polyols produced. Regression models were developed and validated as appropriate for describing the relationships between ...
Shengjun Hu, Yebo Li
openaire   +1 more source

Conversion of Crude Glycerol to Citric Acid by Yarrowia Lipolytica

2019
Citric acid is a key biochemical in the emerging bioeconomy, to date mostly produced through fermentation by A. niger of molasses. One main issue is represented by the replacement of the molasses-based medium with less expensive and more sustainable feedstocks.
Giacomobono R., Albergo R., Valerio V., Bari I. D.   +3 more
openaire   +2 more sources

Bioconversion of crude glycerol feedstocks into ethanol by Pachysolen tannophilus

Bioresource Technology, 2012
Glycerol, the by-product of biodiesel production, is considered as a waste by biodiesel producers. This study demonstrated the potential of utilising the glycerol surplus through conversion to ethanol by the yeast Pachysolen tannophilus (CBS4044). This study demonstrates a robust bioprocess which was not sensitive to the batch variability in crude ...
Liu, Xiaoying, Jensen, Peter Ruhdal, Workman, Mhairi   +2 more
openaire   +2 more sources

Selective hydrogenation of crude glycerol to propanol

2017
Many EU directives regulate the emission of greenhouse gases from fossil fuels. Some of the fossil components have been replaced by bio-components which emit less greenhouse gases. The blending of bio-components will be regulated in the renewable energy directive (RED) from 2020 onwards.
openaire   +1 more source

Rapid monitoring of glycerol in fermentation growth media: Facilitating crude glycerol bioprocess development

Talanta, 2014
Recently, the need for crude glycerol valorisation from the biodiesel industry has generated many studies for practical and economic applications. Amongst them, fermentations based on glycerol media for the production of high value metabolites are prominent applications.
Sergi, Abad, Xavier, Pérez, Antoni, Planas, Xavier, Turon   +3 more
openaire   +2 more sources