Sustainable production of furfural and 5-hidroximetilfurfural from rice husks and soybean peel by using ionic liquid

Michele Cristiane Diel Rambo,Rachel De Moura Nunes Fernandes,Gabriela Eustáquio Lacerda,Nicole Marasca,Magale Karine Diel Rambo,Guenther Carlos Couto Viana,Elisandra Scapin

doi:10.1590/fst.04419

Michele Cristiane Diel Rambo, Rachel De Moura Nunes Fernandes + Show 5 more

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https://doi.org/10.1590/fst.04419

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Abstract

Abstract In the current search for renewable energy sources, residual biomass has been highlighted as a potential source of chemical compounds that are currently obtained from petroleum. Among the derivatives obtained from this, 5-hydroxymethylfurfural and furfural are considered key parts in this process as they are key compounds in the fine chemical industry. This work aims at the use of the rice husks and soybean peel for the synthesis of 5-hydroxymethylfurfural and furfural using the ionic liquid [BMIM][Br]. The physical pre-treatment of biomasses was carried out followed by acid hydrolysis. For the synthesis of the furanic compounds, different temperatures and reaction times were used. The products obtained in each step were analyzed by infrared spectrophotometry and by high performance liquid chromatography. The best yields for rice husks was obtained with 4 hours of reaction at 120 °C (34%) and for soy peel with 3 hours of reaction at 120 °C (59%), for furfural production. For 5-hydroxymethylfurfural production the yields were 8.7% and 3.4% for rice and soy husks, respectively. It was found that glucose was the main group related to bio-products obtaining.

Highlights

IntroductionThe production of biochemicals and energy production from sustainable biomass have seen increasing interest due the positive effect on the environment, since it can decrease CO2 emissions and atmospheric pollution (Chheda et al, 2007).The current commercial production of 5-hydroxymethylfurfural (HMF) and furfural predominantly relies on the syrups extracted from energy crops (Rosatella et al, 2011; van Putten et al, 2013; Klãusli, 2014)
Practical Application: This work aims at the use of rice husks and soybean peel, residual biomasses increasingly produced in Brazil, for the synthesis of 5-hydroxymethylfurfural and furfural using the ionic liquid [BMIM][Br]
Residual biomasses of soybean hulls and rice husks, coming from crops increasingly produced in Brazil, appear as promising raw materials for the synthesis of furanic compounds of high commercial value such as 5-HMF and furfural

Summary

Introduction

The production of biochemicals and energy production from sustainable biomass have seen increasing interest due the positive effect on the environment, since it can decrease CO2 emissions and atmospheric pollution (Chheda et al, 2007).The current commercial production of 5-hydroxymethylfurfural (HMF) and furfural predominantly relies on the syrups extracted from energy crops (Rosatella et al, 2011; van Putten et al, 2013; Klãusli, 2014). HMF is one of the top biomass derived biochemical that can be converted into many promising derivatives, for example, 2,5-dimethyltetrahydrofuran, ethoxymethylfurfural, 2,5-furandicarboxylic acid, furfuryl alcohol, dimethylfuran, and 2,5-diformylfuran (Mitra et al, 2015; Mukherjee et al, 2015a; Rout et al, 2015) These chemicals serve as the building blocks of diverse commodities, including pharmaceuticals, polymers, resins, solvents, fungicides, and biofuels (Rosatella et al, 2011; van Putten et al, 2013; Yu et al, 2017; Galaverna & Pastre, 2017; Kong et al, 2018)

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