Durán-Jiménez, G;
Kostas, ET;
Stevens, LA;
Meredith, W;
Erans, M;
Hernández-Montoya, V;
Buttress, A;
... Binner, E; + view all
(2021)
Green and simple approach for low-cost bioproducts preparation and CO2 capture.
Chemosphere
, 279
, Article 130512. 10.1016/j.chemosphere.2021.130512.
Preview |
Text
Kostas_Revised manuscript Clean version.pdf - Accepted Version Download (655kB) | Preview |
Abstract
This study has demonstrated, for the first time, a simple, fast and flexible microwave processing method for the simultaneous preparation of bio-products (bio-oil, bio-gas and biochar) using a methodology that avoids any form of catalyst or chemical activation. The dielectric properties of biomass and physicochemical characterisation such as TGA, elemental and proximate analysis, XRD, SEM/EDX and textural properties, showed that 8 kJ g-1 of microwave energy can produce superior biochars for applications in CO2 capture. The maximum CO2 uptake capacity for biochar produced was 2.5 mmol g-1 and 2.0 mmol g-1 at 0 and 25 °C and 1 bar, which and also exhibited high gas selectivity compared with N2, fast kinetics of adsorption (<10 min) and desirable reusability (>95%) after 20 cycles. GC-MS analysis of generated bio-oil products revealed that higher microwave energies (>8 kJ g-1) significantly enhanced the amount of bio-oil produced (39%) and specifically the formation of levoglucosan, furfural and phenolics compounds, and bio-gas analysis identified trace levels of H2 and CH4. The results from this study confirm a green, inexpensive and efficient approach for biomass valorisation which can easily be embedded within bio-refinery process, and also demonstrates the potential of biochars for post-combustion CO2 uptake.
| Type: | Article |
|---|---|
| Title: | Green and simple approach for low-cost bioproducts preparation and CO2 capture |
| Location: | England |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1016/j.chemosphere.2021.130512 |
| Publisher version: | http://dx.doi.org/10.1016/j.chemosphere.2021.13051... |
| 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: | Bio-oil, Biochar, CO(2) capture, Lignocellulosic biomass, Microwave pyrolysis |
| 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/10128690 |
Archive Staff Only
 |
View Item |
