Catalytic steam reforming of olive mill wastewater for hydrogen production. (29th June 2015)

• Record Type: Journal Article
• Authors: Casanovas, A.; Galvis, A.; Llorca, J.
• Is Part Of: International journal of hydrogen energy. Volume 40:Number 24(2015)
• Page Start: 7539
• Page End: 7545
• Publication Date: 2015-06-29
• Subjects: Hydrogen as fuel -- Periodicals; Hydrogène (Combustible) -- Périodiques; Hydrogen as fuel; Periodicals; 665.81
• DOI: 10.1016/j.ijhydene.2014.11.083
• Languages: English
• ISSNs: 0360-3199

Abstract

<abstract xml:lang="en" abstract-type="author" id="abs0010"> <title id="sectitle0010">Abstract</title> <sec> <p id="abspara0010">Catalytic honeycombs functionalized with lanthanum-stabilized ceria as catalytic support and impregnated with different metals (Rh, Ru, Pt, Pd and Ni) were prepared and tested for hydrogen production through the steam reforming of distillated, three-phase olive mill wastewater (OMW). Tests were carried out at atmospheric pressure, different temperatures (873–1023 K), and space velocities (4500–16, 000 h<sup>−1</sup>) over catalytic honeycombs loaded with ca. 3 mg cm<sup>−2</sup> of catalyst. The catalytic performance was evaluated in terms of hydrogen production, selectivity of gaseous products and stability for 24 h. The best results were obtained over Pt- and Rh-based catalytic systems. Chemical oxygen demand values were determined to quantify the total organic content of OMW and post-reaction condensate to quantify the extension of the reaction. Total organic contents were found to be 5.4 mg L<sup>−1</sup> and 0.2–0.5 mg L<sup>−1</sup> in OMW distillate and post-reaction condensate, respectively, which leads to a 90–96 % of organic content removal during the steam reforming process. Up to 40 STP mL of pure hydrogen per mL of distillated olive mill wastewater were produced over Pt/CeLa at 973 K and 16, 000 h<sup>−1</sup>. X-ray photoelectron spectroscopy analyses revealed carbon and calcium deposition during catalytic reaction.</p> </sec> </abstract>