Combined autothermal and sorption-enhanced reforming of olive mill wastewater for the production of hydrogen: Thermally neutral conditions analysis

• Type: Article in International Scientific Journal
• Date: 2021

Authors

Cerqueira, P (Author) Other; Soria, M. A. (Author) FEUP; Luis Madeira (Author) FEUP

Journal

Title: International Journal of Hydrogen Energy

Vol. 46

ISSN: 0360-3199

Publisher: Elsevier

Indexing

ISI Web of Knowledge - 0 Citations

ISI Web of Science

Scopus - 1 Citation

Other information

Authenticus ID: P-00V-26D

DOI: 10.1016/j.ijhydene.2021.04.189

Abstract (EN): A thermodynamic study and an energy analysis are performed on the autothermal reforming (ATR) and sorption-enhanced autothermal reforming (SE-ATR) of olive mill wastewater (OMW) to produce green hydrogen. For comparative purposes, the traditional reforming (TR) and sorption-enhanced reforming (SER) are also assessed. The thermodynamic equilibrium compositions are calculated by using the Gibbs free energy minimization method. The effect of temperature, pressure and steam-to-carbon molar ratio (S/C) is assessed for the different reactor configurations. The energy analysis is done by determining the level of oxygen needed to operate under thermally neutral conditions. The results show a reduced hydrogen yield for ATR and SE-ATR compared to their nonautothermal counterparts, but a decreased energy requirement per mole of hydrogen produced. For the ATR, the thermally neutral operation requires a high amount of oxygen,& nbsp;which reduces the hydrogen yield. However, for SE-ATR, the exothermal sorption reaction provides nearly enough energy for the process to be thermally neutral by itself.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 13