Kostas, ET;
Durán-Jiménez, G;
Shepherd, BJ;
Meredith, W;
Stevens, LA;
Williams, OSA;
Lye, GJ;
(2020)
Microwave pyrolysis of olive pomace for bio-oil and bio-char production.
Chemical Engineering Journal
, 387
, Article 123404. 10.1016/j.cej.2019.123404.
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Abstract
Olive pomace is a widely available agro-industrial waste residue in Europe that has the potential to contribute towards a circular, low carbon bio-economy. This study demonstrated, for the first time, the ability to successfully pyrolyse olive pomace with microwaves for the production of bio-char and bio-oil. It was found that the energy requirement needed to pyrolyse up to 80% of the olive pomace was as low as 3.6 kJ/g and bio-oil yields up to 30% were produced. Microwave power did not influence the overall yields or the chemical composition of the obtained bio-oils, but did alter the textural properties of the generated bio-chars and their ability to remove methylene blue dye. Optimum processing conditions were found to be within the 3.6 kJ/g energy requirement with a microwave power of 200 W and processing time of 180 sec. These conditions produced a bio-oil fraction containing mainly acetic acid (71.9%) and a bio-char with a surface area of 392.3 m2/g, micropore volume of 0.15 cm3/g and a methylene blue removal efficiency of 40 qMB mg/g. The results acquired from this study reveal the superiority of microwave heating in a pyrolysis system and highlight a novel and prospective route for added value recovery from natural waste resources like olive pomace.
| Type: | Article |
|---|---|
| Title: | Microwave pyrolysis of olive pomace for bio-oil and bio-char production |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1016/j.cej.2019.123404 |
| Publisher version: | https://doi.org/10.1016/j.cej.2019.123404 |
| Language: | English |
| Additional information: | This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions. |
| Keywords: | Microwave pyrolysis, Olive pomace, Bio-oil, Bio-char, Bioenergy |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Biochemical Engineering |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10088950 |
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