Less severe reaction conditions to produce levulinic acid with reduced humins formation at the expense of lower biomass conversion: Is it economically feasible?

Esters of levulinic acid constitute a promising class of renewable fuel additives that improve the cold properties of diesel and reduce soot emissions. However, the production of levulinic acid via thermolysis of biomass has low selectivity, a problem that compromises both yield and reactor operabil...

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Autores principales:	Jean Felipe Leal Silva, Adriano Pinto Mariano, Rubens Maciel Filho
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Biorefinery Renewable chemical Biomass Biofuel Process simulation Fuel TP315-360
Acceso en línea:	https://doaj.org/article/1b0f50fe65b74ac7b8f3a28157137535
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spelling	oai:doaj.org-article:1b0f50fe65b74ac7b8f3a281571375352021-11-16T04:11:23ZLess severe reaction conditions to produce levulinic acid with reduced humins formation at the expense of lower biomass conversion: Is it economically feasible?2666-052010.1016/j.jfueco.2021.100029https://doaj.org/article/1b0f50fe65b74ac7b8f3a281571375352021-12-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S2666052021000224https://doaj.org/toc/2666-0520Esters of levulinic acid constitute a promising class of renewable fuel additives that improve the cold properties of diesel and reduce soot emissions. However, the production of levulinic acid via thermolysis of biomass has low selectivity, a problem that compromises both yield and reactor operability, with impacts on cost. The main undesirable byproducts of this process are called humins, a dark insoluble residue. This work proposes and simulates an alternative reactor arrangement based on experimental results and analyzes reaction conditions via design of experiments to determine the factors that influence humins formation in the production of levulinic acid from sugarcane bagasse. Results indicate that a high residence time in hydrolysis increases humins formation, and a high temperature was found to deteriorate selectivity even further. Therefore, a high catalyst loading combined with low residence time and temperature is required to decrease losses. Considering the limitations of the simulated model, the conditions that minimize humins formation led to yields of 109 kg of furfural (from hemicelluloses) and 74 kg of levulinic acid (from cellulose) per dry tonne of sugarcane bagasse, with the production of 58 kg of humins. Results of economic analysis demonstrated that if humins disposal is associated with a high cost, low biomass conversion is required to yield a promising economic result, even though this might compromise the yield of levulinic acid and furfural. On the other hand, if value-added applications for humins become available, a similar conclusion applies if their production compromises reactor operability.Jean Felipe Leal SilvaAdriano Pinto MarianoRubens Maciel FilhoElsevierarticleBiorefineryRenewable chemicalBiomassBiofuelProcess simulationFuelTP315-360ENFuel Communications, Vol 9, Iss , Pp 100029- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Biorefinery Renewable chemical Biomass Biofuel Process simulation Fuel TP315-360
spellingShingle	Biorefinery Renewable chemical Biomass Biofuel Process simulation Fuel TP315-360 Jean Felipe Leal Silva Adriano Pinto Mariano Rubens Maciel Filho Less severe reaction conditions to produce levulinic acid with reduced humins formation at the expense of lower biomass conversion: Is it economically feasible?
description	Esters of levulinic acid constitute a promising class of renewable fuel additives that improve the cold properties of diesel and reduce soot emissions. However, the production of levulinic acid via thermolysis of biomass has low selectivity, a problem that compromises both yield and reactor operability, with impacts on cost. The main undesirable byproducts of this process are called humins, a dark insoluble residue. This work proposes and simulates an alternative reactor arrangement based on experimental results and analyzes reaction conditions via design of experiments to determine the factors that influence humins formation in the production of levulinic acid from sugarcane bagasse. Results indicate that a high residence time in hydrolysis increases humins formation, and a high temperature was found to deteriorate selectivity even further. Therefore, a high catalyst loading combined with low residence time and temperature is required to decrease losses. Considering the limitations of the simulated model, the conditions that minimize humins formation led to yields of 109 kg of furfural (from hemicelluloses) and 74 kg of levulinic acid (from cellulose) per dry tonne of sugarcane bagasse, with the production of 58 kg of humins. Results of economic analysis demonstrated that if humins disposal is associated with a high cost, low biomass conversion is required to yield a promising economic result, even though this might compromise the yield of levulinic acid and furfural. On the other hand, if value-added applications for humins become available, a similar conclusion applies if their production compromises reactor operability.
format	article
author	Jean Felipe Leal Silva Adriano Pinto Mariano Rubens Maciel Filho
author_facet	Jean Felipe Leal Silva Adriano Pinto Mariano Rubens Maciel Filho
author_sort	Jean Felipe Leal Silva
title	Less severe reaction conditions to produce levulinic acid with reduced humins formation at the expense of lower biomass conversion: Is it economically feasible?
title_short	Less severe reaction conditions to produce levulinic acid with reduced humins formation at the expense of lower biomass conversion: Is it economically feasible?
title_full	Less severe reaction conditions to produce levulinic acid with reduced humins formation at the expense of lower biomass conversion: Is it economically feasible?
title_fullStr	Less severe reaction conditions to produce levulinic acid with reduced humins formation at the expense of lower biomass conversion: Is it economically feasible?
title_full_unstemmed	Less severe reaction conditions to produce levulinic acid with reduced humins formation at the expense of lower biomass conversion: Is it economically feasible?
title_sort	less severe reaction conditions to produce levulinic acid with reduced humins formation at the expense of lower biomass conversion: is it economically feasible?
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/1b0f50fe65b74ac7b8f3a28157137535
work_keys_str_mv	AT jeanfelipelealsilva lessseverereactionconditionstoproducelevulinicacidwithreducedhuminsformationattheexpenseoflowerbiomassconversionisiteconomicallyfeasible AT adrianopintomariano lessseverereactionconditionstoproducelevulinicacidwithreducedhuminsformationattheexpenseoflowerbiomassconversionisiteconomicallyfeasible AT rubensmacielfilho lessseverereactionconditionstoproducelevulinicacidwithreducedhuminsformationattheexpenseoflowerbiomassconversionisiteconomicallyfeasible
_version_	1718426710373826560

Less severe reaction conditions to produce levulinic acid with reduced humins formation at the expense of lower biomass conversion: Is it economically feasible?

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