Call: +34 974 239 320
Email: dalvira@unizar.es
Address: Escuela Politécnica Superior, Crta de Cuarte, s/n. E-22071 Huesca – Spain
ABOUT ME
Research Interests
- Producing biomass-derived chars by pyrolysis of agricultural wastes.
- Developing advanced carbon materials for thermal, catalytic and electrochemical applications.
- Activation and doping of engineered carbons as anodes for sodium-ion batteries.
Projects
- MEDWASTE —Mediterranean Agricultural Wastes: Environmentally Sustainable Resource for an Innovative Renewable Energy Technology (PCIN-2017-048)
- BIOCARB-ion —Engineered biochar-derived carbons as anodes for sodium- and potassium-ion batteries (PID2019-107737RB-I00)
PUBLICATIONS
2016
Manyà, Joan Josep; Alvira, Darío; Azuara, Manuel; Bernin, Diana; Hedin, Niklas
Effects of Pressure and the Addition of a Rejected Material from Municipal Waste Composting on the Pyrolysis of Two-Phase Olive Mill Waste Journal Article
In: Energy and Fuels, vol. 30, no. 10, pp. 8055–8064, 2016, ISSN: 15205029.
@article{Manya2016,
title = {Effects of Pressure and the Addition of a Rejected Material from Municipal Waste Composting on the Pyrolysis of Two-Phase Olive Mill Waste},
author = {Joan Josep Manyà and Darío Alvira and Manuel Azuara and Diana Bernin and Niklas Hedin},
url = {https://pubs.acs.org/sharingguidelines},
doi = {10.1021/acs.energyfuels.6b01579},
issn = {15205029},
year = {2016},
date = {2016-10-01},
journal = {Energy and Fuels},
volume = {30},
number = {10},
pages = {8055--8064},
publisher = {American Chemical Society},
abstract = {This work examines the effect of the absolute pressure (0.1 or 1.0 MPa) and the addition of a high-ash rejected material from municipal solid waste (MSW) composting (RC) on the slow pyrolysis of two-phase olive mill waste (OW). The experiments were conducted in a batch pyrolysis system using an initial mass of 750 g of feedstock. Three types of initial materials were tested: the OW alone, a mixture of OW and pure additives (5 wt % K2CO3 and 5 wt % CaO), and a mixture of OW and RC (10 wt %). For the OW without any additive, an increased pressure led to a market increase in the carbonization efficiency (i.e., fixed carbon yield). At atmospheric pressure, the addition of either additives (CaO + K2CO3) or RC led to important changes in the pyrolysis behavior as a result of the catalytic role of the alkali and alkaline earth metals (AAEMs). However, this catalytic effect, which is translated into an enhancement of the decomposition of both the hemicellulose and cellulose fractions, was not observed at 1.0 MPa. The potential stability of all of the produced biochars appeared to be very high, given the results obtained from both proximate and ultimate analyses. This high stability was confirmed by 13C and 1H solid-state nuclear magnetic resonance, which showed that the carbon contained in the biochars was composed mainly or entirely of highly condensed aromatic structures. However, the highest values of stable C (Edinburgh stability tool) and R50,x (recalcitrance index) were obtained for biochars produced from the OW + RC mixtures at any pressure. In summary, the addition of the rejected material from MSW composting appears to be a very cost-effective measure to obtain a potentially high-stable biochar, even at atmospheric pressure.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
This work examines the effect of the absolute pressure (0.1 or 1.0 MPa) and the addition of a high-ash rejected material from municipal solid waste (MSW) composting (RC) on the slow pyrolysis of two-phase olive mill waste (OW). The experiments were conducted in a batch pyrolysis system using an initial mass of 750 g of feedstock. Three types of initial materials were tested: the OW alone, a mixture of OW and pure additives (5 wt % K2CO3 and 5 wt % CaO), and a mixture of OW and RC (10 wt %). For the OW without any additive, an increased pressure led to a market increase in the carbonization efficiency (i.e., fixed carbon yield). At atmospheric pressure, the addition of either additives (CaO + K2CO3) or RC led to important changes in the pyrolysis behavior as a result of the catalytic role of the alkali and alkaline earth metals (AAEMs). However, this catalytic effect, which is translated into an enhancement of the decomposition of both the hemicellulose and cellulose fractions, was not observed at 1.0 MPa. The potential stability of all of the produced biochars appeared to be very high, given the results obtained from both proximate and ultimate analyses. This high stability was confirmed by 13C and 1H solid-state nuclear magnetic resonance, which showed that the carbon contained in the biochars was composed mainly or entirely of highly condensed aromatic structures. However, the highest values of stable C (Edinburgh stability tool) and R50,x (recalcitrance index) were obtained for biochars produced from the OW + RC mixtures at any pressure. In summary, the addition of the rejected material from MSW composting appears to be a very cost-effective measure to obtain a potentially high-stable biochar, even at atmospheric pressure.