BIBLIOS

Document type
Conference papers

Document subtype
Abstract

Title
Vapor-Liquid Equilibrium of Water+1-Butanol Mixtures Above UCST

Participants in the publication
Ana F. Cristino (Author)
Dep. Química e Bioquímica
Dep. Química e Bioquímica
CQE
Fernando J. V. Santos (Author)
Dep. Química e Bioquímica
CQE
António Palavra (Author)
INSTITUTO SUPERIOR TÉCNICO
Carlos A. Nieto de Castro (Author)
Dep. Química e Bioquímica
CQE

Summary
Government policies in several countries are encouraging the use of renewable energy, by implementing directives such as ”Directive 2009/28/EC of the European Parliament and of the Council on the promotion of the use of energy from renewable sources”. However, the large portion of the world’s energy is still based on fossil fuels. In the case of transportation, biofuels have achieved major breakthroughs, but much remains to be studied in this area. The main\nobjective in the use of biofuels is to mitigate carbon dioxide emissions, through its recycling from atmosphere by storage in plant’s cellulose, hemicellulose, starches, sugars and oils, that are process by man into biofuels used in transportation [1]. This processing by man is what delay’s further progresses in the area, since there’s still much concern about the cost/benefit of the processes that generate biofuels. One example is biobutanol. With more carbons than ethanol, biobutanol proved to have superior fuel properties than bioethanol, depending on the isomer used. Another advantage on its use is the non-restriction in its blend with gasoline, allowing this biofuel to fully substitute gasoline, in comparison with bioethanol. However, its processing is still more expensive than bioethanol. These facts have come to our attention that much has to be studied for the implementation of new biofuels in Portugal, starting with its thermodynamic properties and behaviours for process design, namely alcoholic mixtures. Several binary mixtures of alcohol and water have been studied using Vapor Liquid Equilibria (VLE) and densimetry, to better understand the dynamic of these mixtures [2-4]. In this paper, we present our complete study on VLE of water+1-butanol above upper critical solution temperature (UCST), using a flow VLE apparatus.\nDespite all advantages that the equipment proven to have in the past, modifications were made to permit this type of studies with immiscible systems.

Editor(s)
Gernot Potlacher


Institution
FACULDADE DE CIÊNCIAS DA UNIVERSIDADE DE LISBOA

Event
21th European Conference on Thermophysical Properties, ECTP2017, September 3-8, 2017

Publication Identifiers
ISBN - 9783851255461

Address
Graz, Austria

Organizers
Institute of Experimental Physics, TU Graz

Publisher
TU-Graz

Collection
Abstract Book



Document Identifiers
DOI - https://doi.org/10.3217/978-3-85125-546-1

Keywords
Vapor-liquid Equilibria Water+n-Butanol UCST Experimental