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Liquid phase equilibrium of phenol extraction from bio-oil produced by biomass pyrolysis using thermodynamic models

Chinese Journal of Chemical Engineering 2019年第2期27卷 391-399页

作者： Dewi Selvia Fardhyanti Bayu Triwibowo Heri Istanto Muhammad Khusni Anajib amalia larasati Windy Oktaviani Department of Chemical Engineering Faculty of Engineering Universitas Negeri Semarang

Utilization of biomass as a new and renewable energy source is being actively conducted by various parties. One of the technologies for utilizing or converting biomass as an energy source is pyrolysis, to convert biomass into a more valuable product which is bio-oil. Bio-oil is a condensed liquid from the vapor phase of biomass pyrolysis such as coconut shells and coffee shells. Biomass composition consisting of hemicellulose, cellulose, and lignin will oxidize to phenol which is the main content in bio-oil. The total phenolic compounds contained in bio-oil are 47.03%(coconut shell) and 45%(coffee shell). The content of phenol compounds in corrosive bio-oils still quite high, the use of this bio-oil directly will cause various difficulties in the combustion system due to high viscosity, low calorific value, corrosivity, and instability. Phenol compounds have some benefits as one of the compounds for floor cleaners and disinfectants which are contained in *** correlation between experimental data and calculations shows that the UNIQUAC Functional-group Activity Coefficients(UNIFAC) equilibrium model can be used to predict the liquid–liquid equilibrium in the phenol extraction process of the coconut shell pyrolysis bio-oil. While the Non-Random Two Liquid(NRTL) equilibrium model can be used to predict liquid–liquid equilibrium in the extraction process of phenol from bio-oil pyrolysis of coffee shells.

关键词： Biomass Pyrolysis Bio-oil UNIFAC NRTL

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