Hydrogen production by catalytic conversion of olive mill wastewater in supercritical water

  1. Pau Casademont-Lanzat 1
  2. Belén García-Jarana 1
  3. Jezabel Sánchez-Oneto 1
  4. Juan R. Portela 1
  5. Enrique J. Martínez de la Ossa 1
  1. 1 Department of Chemical Engineering and Food Technology, Faculty of Sciences, University of Cadiz, International Excellence Agrifood Campus (CeiA3), 11510 Puerto Real (Cadiz), Spain
16th European Meeting of Supercritical Fluids

Publisher: ISASF

ISSN: 0896-8446

ISBN: 978-989-20-7507-5

Year of publication: 2017

Pages: 224-229

Type: Conference paper


Hydrothermal gasification is considered to be a promising technology for the efficient conversion of wet biomass residues into fuel gas. Unlike conventional gasification methods, such as methane fermentation or thermal gasification, Supercritical Water Gasification (SCWG) produce a gas fuel, it does not require a previous drying process and it has many advantages from the energy, environmental and financial point of view.This work is particularly valuable since it studies the use of real biomass residues; i.e. Olive Mill Wastewater (OMW) treated with both catalytic and non-catalytic SCWG to produce hydrogen. The increasing amount of OMW is becoming a serious environmental problem in olive oil-producing countries. SCWG process of OMW in a batch reactor at 530 °C and 250 bar was studied, and the effect of the catalysts on the process was evaluated in terms of biomass conversion (COD removal), gases yields (H2, CH4, CO2 and CO) and H2 selectivity.