Supercritical water gasification of phenol as a model for plant biomass


Gokkaya D. S. , Saglam M., Yilksel M., Ballice L.

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, cilt.40, ss.11133-11139, 2015 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 40 Konu: 34
  • Basım Tarihi: 2015
  • Doi Numarası: 10.1016/j.ijhydene.2015.04.078
  • Dergi Adı: INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
  • Sayfa Sayıları: ss.11133-11139

Özet

As the demand for energy grows, sustainable energy sources like plant biomass become increasingly important. Plant biomass consists of three main components: cellulose, hemicellulose and lignin. Phenol is a model compound for the phenolic structures comprising the lignin in biomass. Also the macromolecular chemical structure of biomass contains many phenolic monomers. In this study, gasification of phenol as a model substance for plant biomass waste was carried out in supercritical water at a temperature range 400 to 600 degrees C and for the pressures 20.0, 27.5, 35.0 and 42.5 MPa. Experiments were performed in the absence and presence of alkali catalyst potassium carbonate (K2CO3) for a reaction time of 1 h. Both the gas and liquid phases were analyzed by using chromatographic techniques, which identified and quantified the reaction intermediates and products, including H-2, CH4, CO2, CO and C-2-C-4 hydrocarbons, in the gas phase and different compounds (carboxylic acids, furfurals, aldehydes and ketones) in the liquid phase. Higher temperatures and using catalyst K2CO3 promoted gasification and resulted in a product gas rich in CH4 and H-2. Copyright (C) 2015, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.