Multiparameter-analysis of CO2/Steam-enhanced gasification and pyrolysis for syngas and biochar production from low-cost feedstock

The disposal of spent coffee grounds (SCG) and brewers' spent grains (BSG) has become an environmental issue. Thus, the waste-to-energy valorization of these two low-cost feedstocks was performed via gasification and pyrolysis to assess their potential as syngas and biochar fuels. The processes...

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Autores principales:	Rafael B.W. Evaristo, Ricardo Ferreira, Juliana Petrocchi Rodrigues, Juliana Sabino Rodrigues, Grace F. Ghesti, Edgar A. Silveira, M. Costa
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Waste-to-energy Spent coffee ground Brewers' spent grains Pyrolysis Gasification Low-cost feedstock Engineering (General). Civil engineering (General) TA1-2040
Acceso en línea:	https://doaj.org/article/c5abea58a51046c7b2bcff18372d427e
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spelling	oai:doaj.org-article:c5abea58a51046c7b2bcff18372d427e2021-11-28T04:38:00ZMultiparameter-analysis of CO2/Steam-enhanced gasification and pyrolysis for syngas and biochar production from low-cost feedstock2590-174510.1016/j.ecmx.2021.100138https://doaj.org/article/c5abea58a51046c7b2bcff18372d427e2021-12-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S2590174521000635https://doaj.org/toc/2590-1745The disposal of spent coffee grounds (SCG) and brewers' spent grains (BSG) has become an environmental issue. Thus, the waste-to-energy valorization of these two low-cost feedstocks was performed via gasification and pyrolysis to assess their potential as syngas and biochar fuels. The processes’ optimum conditions were investigated by a multiple-criteria decision support method. Firstly, both raw materials were gasified at 1000 °C with O2/N2, O2/CO2/N2 and O2/H2O/N2 atmospheres. The characteristics and energy performance of the producer gas were evaluated. In addition, the exergy analysis of green-H2 production was assessed. The pyrolysis experiments were conducted at 300, 500 and 700 °C, followed by a comprehensive characterization of the biochar properties and its combustion behavior. The syngas production based on CO2/Steam-enhanced gasification has indicated clear energetic and exergetic improvements against O2/N2 with a promising increase of 32.97% LHVsyngas for BSG. Obtained biochar possesses favorable fuel characteristics promoting an HHV enhancement up to 19.42% (SCG) and 83.11% (BSG). Furthermore, the combustion index indicated a great potential of using SCG and BSG as solid biofuel for straightforward application to heat generation in small-scale systems. Therefore, syngas and biochar characteristics encourage feasible biofuels from low-cost feedstocks for energy generation.Rafael B.W. EvaristoRicardo FerreiraJuliana Petrocchi RodriguesJuliana Sabino RodriguesGrace F. GhestiEdgar A. SilveiraM. CostaElsevierarticleWaste-to-energySpent coffee groundBrewers' spent grainsPyrolysisGasificationLow-cost feedstockEngineering (General). Civil engineering (General)TA1-2040ENEnergy Conversion and Management: X, Vol 12, Iss , Pp 100138- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Waste-to-energy Spent coffee ground Brewers' spent grains Pyrolysis Gasification Low-cost feedstock Engineering (General). Civil engineering (General) TA1-2040
spellingShingle	Waste-to-energy Spent coffee ground Brewers' spent grains Pyrolysis Gasification Low-cost feedstock Engineering (General). Civil engineering (General) TA1-2040 Rafael B.W. Evaristo Ricardo Ferreira Juliana Petrocchi Rodrigues Juliana Sabino Rodrigues Grace F. Ghesti Edgar A. Silveira M. Costa Multiparameter-analysis of CO2/Steam-enhanced gasification and pyrolysis for syngas and biochar production from low-cost feedstock
description	The disposal of spent coffee grounds (SCG) and brewers' spent grains (BSG) has become an environmental issue. Thus, the waste-to-energy valorization of these two low-cost feedstocks was performed via gasification and pyrolysis to assess their potential as syngas and biochar fuels. The processes’ optimum conditions were investigated by a multiple-criteria decision support method. Firstly, both raw materials were gasified at 1000 °C with O2/N2, O2/CO2/N2 and O2/H2O/N2 atmospheres. The characteristics and energy performance of the producer gas were evaluated. In addition, the exergy analysis of green-H2 production was assessed. The pyrolysis experiments were conducted at 300, 500 and 700 °C, followed by a comprehensive characterization of the biochar properties and its combustion behavior. The syngas production based on CO2/Steam-enhanced gasification has indicated clear energetic and exergetic improvements against O2/N2 with a promising increase of 32.97% LHVsyngas for BSG. Obtained biochar possesses favorable fuel characteristics promoting an HHV enhancement up to 19.42% (SCG) and 83.11% (BSG). Furthermore, the combustion index indicated a great potential of using SCG and BSG as solid biofuel for straightforward application to heat generation in small-scale systems. Therefore, syngas and biochar characteristics encourage feasible biofuels from low-cost feedstocks for energy generation.
format	article
author	Rafael B.W. Evaristo Ricardo Ferreira Juliana Petrocchi Rodrigues Juliana Sabino Rodrigues Grace F. Ghesti Edgar A. Silveira M. Costa
author_facet	Rafael B.W. Evaristo Ricardo Ferreira Juliana Petrocchi Rodrigues Juliana Sabino Rodrigues Grace F. Ghesti Edgar A. Silveira M. Costa
author_sort	Rafael B.W. Evaristo
title	Multiparameter-analysis of CO2/Steam-enhanced gasification and pyrolysis for syngas and biochar production from low-cost feedstock
title_short	Multiparameter-analysis of CO2/Steam-enhanced gasification and pyrolysis for syngas and biochar production from low-cost feedstock
title_full	Multiparameter-analysis of CO2/Steam-enhanced gasification and pyrolysis for syngas and biochar production from low-cost feedstock
title_fullStr	Multiparameter-analysis of CO2/Steam-enhanced gasification and pyrolysis for syngas and biochar production from low-cost feedstock
title_full_unstemmed	Multiparameter-analysis of CO2/Steam-enhanced gasification and pyrolysis for syngas and biochar production from low-cost feedstock
title_sort	multiparameter-analysis of co2/steam-enhanced gasification and pyrolysis for syngas and biochar production from low-cost feedstock
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/c5abea58a51046c7b2bcff18372d427e
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Multiparameter-analysis of CO2/Steam-enhanced gasification and pyrolysis for syngas and biochar production from low-cost feedstock

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