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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Kinetic insights into the lignocellulosic biomass-based levulinic acid production by a mechanistic model

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Author(s):
Lopes, Emilia Savioli [1] ; Rivera, Elmer Ccopa [1, 2] ; de Jesus Gariboti, Julio Cesar [3] ; Zimmermann Feistel, Luis Henrique [4] ; Dutra, Joao Vitor [4] ; Maciel Filho, Rubens [1] ; Tovar, Laura Plazas [3]
Total Authors: 7
Affiliation:
[1] Univ Estadual Campinas, Sch Chem Engn, BR-13083852 Campinas, SP - Brazil
[2] Andrews Univ, Dept Engn, Berrien Springs, MI 49104 - USA
[3] Univ Fed Sao Paulo, Dept Chem Engn, BR-09913030 Diadema, SP - Brazil
[4] Univ Fed Santa Maria, Dept Chem Engn, BR-97105900 Santa Maria, RS - Brazil
Total Affiliations: 4
Document type: Journal article
Source: Cellulose; v. 27, n. 10 MAY 2020.
Web of Science Citations: 0
Abstract

In this work, a mechanistic model was developed to simulate the kinetics of the production of levulinic acid (LA) from sugarcane bagasse (SCB), rice husk (RH) and soybean straw (SS). The production of LA from those agro-industrial wastes followed the methodology of biorefining in three stages. Experimental data from the third stage (catalytic depolymerization of cellulose) obtained under a wide range of operating conditions were used to estimate the parameters of the model. An optimization procedure based on a genetic algorithm was used to determine the optimal parameter values. The prediction of the concentrations of glucose, 5-HMF and LA using the mechanistic model was particularly accurate, as demonstrated by R-2 and RMSE. Thereby, a satisfactory concordance was reached between the high yields of LA of 61.1 mol%, 67.7 mol% and 61.4 mol% calculated by the model, and the experimental yields of 60.5 +/- 2.1 mol%, 65.2 +/- 2.9 mol% and 61.5 +/- 4.0 mol% (under optimum conditions of 190 degrees C, 7.0% w/v of H2SO4, 75 min) for SCB, RH and SS, respectively. The biorefining of the agro-industrial wastes under optimum operating conditions allowed a satisfactory catalytic depolymerization of cellulose, regardless of the degree of crystallinity. The estimation of yields led to suggesting a strategy from the point of view of process synthesis and design, integrating SCB, RH and SS to supply their off-season and, thus, to ensure the supply of raw materials in the production of LA. {[}GRAPHICS] . (AU)

FAPESP's process: 15/17592-3 - Production optimization and obtainment of levulinic acid from sugarcane bagasse and molasses
Grantee:Emília Savioli Lopes
Support type: Scholarships in Brazil - Doctorate
FAPESP's process: 15/20630-4 - Biorefinery development integrated to a bioethanol sugar cane plant with zero CO2 emission: routes to convert renewable resources to bio-products and bio-electricity
Grantee:Rubens Maciel Filho
Support type: Research Projects - Thematic Grants
FAPESP's process: 17/23335-9 - Biorefinery development integrated to a bioethanol sugar cane plant with zero CO2 emission: routes to convert renewable resources to bio-products and bio-electricity
Grantee:Elmer Alberto Ccopa Rivera
Support type: Scholarships in Brazil - Technical Training Program - Technical Training