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Slow pyrolysis of pistachio-waste pellets: combined phenomenological modeling with environmental, exergetic, and energetic analysis (3-E)

Authors: Daniela Zalazar-Garcia; Anabel Fernandez; Lucas Cavaliere; Yimin Deng; José Soria; Rosa Rodriguez; Germán Mazza;

Slow pyrolysis of pistachio-waste pellets: combined phenomenological modeling with environmental, exergetic, and energetic analysis (3-E)

Abstract

Slow pyrolysis of a pellet of pistachio waste was studied using a macro-thermogravimetric analysis. Experiments were conducted at different heating rates (5, 10, and 15 K/min), measuring the evolution of mass weight loss and CO release. Based on a dimensionless number analysis, a numerical model was formulated, comprising heat and mass balances. A kinetic expression for the release of CO was proposed. Additionally, a 3-E (environmental, exergetic, and energetic) analysis for the processing of 20 kg/h of bio-waste (case study) was applied. Experimental results showed that biochar and gas yields decreased with an increase in the heating rate (43 to 36% and 28 to 24%, respectively), while the bio-oil yield increased (29 to 40%). The slow pyrolysis model presented a good agreement with experimental results of weight loss. Furthermore, a comparison with the contracting volume model showed that internal heat transport should control the global process. The proposed kinetic model for CO release showed a good fit to experimental data, where activation energy values were 29.88 (5 K/min), 17.44 (10 K/min), and 28.79 kJ/mol (15 K/min). Finally, from the 3-E analysis and the experimental results, it can be suggested that an increase in the heating rate resulted in a higher pyrolysis exergetic efficiency (70%). It is due to an increase in the bio-oil yield with high-energy content.

Fil: Zalazar García, Daniela Inés Yanina. Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro Cientifico Tecnologico Conicet - Patagonia Confluencia. Instituto de Investigacion y Desarrollo En Ingenieria de Procesos, Biotecnologia y Energias Alternativas. Grupo Vinculado Instituto de Ingenieria Quimica | Universidad Nacional del Comahue. Instituto de Investigacion y Desarrollo En Ingenieria de Procesos, Biotecnologia y Energias Alternativas. Grupo Vinculado Instituto de Ingenieria Quimica.; Argentina

Fil: Rodriguez, Rosa Ana. Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro Cientifico Tecnologico Conicet - Patagonia Confluencia. Instituto de Investigacion y Desarrollo En Ingenieria de Procesos, Biotecnologia y Energias Alternativas. Grupo Vinculado Instituto de Ingenieria Quimica | Universidad Nacional del Comahue. Instituto de Investigacion y Desarrollo En Ingenieria de Procesos, Biotecnologia y Energias Alternativas. Grupo Vinculado Instituto de Ingenieria Quimica.; Argentina

Fil: Cavaliere, Lucas Nahuel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Instituto de Investigación y Desarrollo en Ingeniería de Procesos, Biotecnología y Energías Alternativas. Universidad Nacional del Comahue. Instituto de Investigación y Desarrollo en Ingeniería de Procesos, Biotecnología y Energías Alternativas; Argentina

Fil: Mazza, German Delfor. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Instituto de Investigación y Desarrollo en Ingeniería de Procesos, Biotecnología y Energías Alternativas. Universidad Nacional del Comahue. Instituto de Investigación y Desarrollo en Ingeniería de Procesos, Biotecnología y Energías Alternativas; Argentina

Fil: Soria, Jose Miguel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Instituto de Investigación y Desarrollo en Ingeniería de Procesos, Biotecnología y Energías Alternativas. Universidad Nacional del Comahue. Instituto de Investigación y Desarrollo en Ingeniería de Procesos, Biotecnología y Energías Alternativas; Argentina

Fil: Fernandez, Anabel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Instituto de Investigación y Desarrollo en Ingeniería de Procesos, Biotecnología y Energías Alternativas. Universidad Nacional del Comahue. Instituto de Investigación y Desarrollo en Ingeniería de Procesos, Biotecnología y Energías Alternativas; Argentina

Fil: Deng, Yimin. Katholikie Universiteit Leuven; Bélgica

Country
Argentina
Keywords

LIFE CYCLE ASSESSMENT, 3-E ANALYSIS, BIO-WASTE PELLET, PHENOMENOLOGICAL MODELING, SLOW PYROLYSIS MODEL, https://purl.org/becyt/ford/2.4, https://purl.org/becyt/ford/2

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    popularity
    This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
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    influence
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citations
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
14
Top 10%
Average
Top 10%