Waste to Carbon: Densification of Torrefied Refuse-Derived Fuel
Andrzej Białowiec , Monika Micuda , Jacek A. Koziel
AbstractIn this work, for the first time, the feasibility of obtaining carbonized refuse-derived fuel (CRDF) pelletization from municipal solid waste (MSW) was shown. Production of CRDF by torrefaction of MSW could be the future of recycling technology. The objective was to determine the applied pressure needed to produce CRDF pellets with compressive strength (CS) comparable to conventional biomass pellets. Also, the hypothesis that a binder (water glass (WG)) applied to CRDF as a coating can improve CS was tested. The pelletizing was based on the lab-scale production of CRDF pellets with pressure ranging from 8.5 MPa to 76.2 MPa. The resulting CS pellets increased from 0.06 MPa to 3.44 MPa with applied pelletizing pressure up to the threshold of 50.8 MPa, above which it did not significantly improve (p < 0.05). It was found that the addition of 10% WG to 50.8 MPa CRDF pellets or coating them with WG did not significantly improve the CS (p < 0.05). It was possible to produce durable pellets from CRDF. The CS was comparable to pine pellets. This research advances the concept of energy recovery from MSW, particularly by providing practical information on densification of CRDF originating from the torrefaction of the flammable fraction of MSW–refuse-derived fuel. Modification of CRDF through pelletization is proposed as preparation of lower volume fuel with projected lower costs of its storage and transportation and for a wider adoption of this technology.
|Journal series||Energies, ISSN 1996-1073, (A 25 pkt)|
|Publication size in sheets||0.95|
|Keywords in English||energy recovery, biochar pellets, torrefaction, circular economy, compressive strength, municipal waste, energy densification, waste to carbon, recycling, RDF|
|Internal identifier||66733; PX-5c0909d5d5de7e74c2e4df0a|
|License||Journal (articles only); published final; ; after publication|
|Score||= 25.0, 15-06-2020, ArticleFromJournal|
|Publication indicators||= 13; = 12; : 2018 = 1.156; : 2018 = 2.707 (2) - 2018=2.99 (5)|
|Citation count*||25 (2020-08-03)|
* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or Perish system.