scholarly journals Arundo donax Refining to Second Generation Bioethanol and Furfural

Processes ◽  
2020 ◽  
Vol 8 (12) ◽  
pp. 1591
Author(s):  
Isabella De Bari ◽  
Federico Liuzzi ◽  
Alfredo Ambrico ◽  
Mario Trupo
Keyword(s):  
Second Generation ◽  
Solid Acid Catalyst ◽  
Acid Catalyst ◽  
Arundo Donax ◽  
Giant Reed ◽  
High Yield ◽  
Second Generation Bioethanol ◽  
Lignocellulosic Feedstocks ◽  
Filter Paper Unit ◽  
Simultaneous Saccharification

Biomass-derived sugars are platform molecules that can be converted into a variety of final products. Non-food, lignocellulosic feedstocks, such as agroforest residues and low inputs, high yield crops, are attractive bioresources for the production of second-generation sugars. Biorefining schemes based on the use of versatile technologies that operate at mild conditions contribute to the sustainability of the bio-based products. The present work describes the conversion of giant reed (Arundo donax), a non-food crop, to ethanol and furfural (FA). A sulphuric-acid-catalyzed steam explosion was used for the biomass pretreatment and fractionation. A hybrid process was optimized for the hydrolysis and fermentation (HSSF) of C6 sugars at high gravity conditions consisting of a biomass pre-liquefaction followed by simultaneous saccharification and fermentation with a step-wise temperature program and multiple inoculations. Hemicellulose derived xylose was dehydrated to furfural on the solid acid catalyst in biphasic media irradiated by microwave energy. The results indicate that the optimized HSSF process produced ethanol titers in the range 43–51 g/L depending on the enzymatic dosage, about 13–21 g/L higher than unoptimized conditions. An optimal liquefaction time before saccharification and fermentation tests (SSF) was 10 h by using 34 filter paper unit (FPU)/g glucan of Cellic® CTec3. C5 streams yielded 33.5% FA of the theoretical value after 10 min of microwave heating at 157 °C and a catalyst concentration of 14 meq per g of xylose.

scholarly journals Multi-Step Exploitation of Raw Arundo donax L. for the Selective Synthesis of Second-Generation Sugars by Chemical and Biological Route

Catalysts ◽  
2020 ◽  
Vol 10 (1) ◽  
pp. 79 ◽  
Author(s):  
Nicola Di Fidio ◽  
Anna Maria Raspolli Galletti ◽  
Sara Fulignati ◽  
Domenico Licursi ◽  
Federico Liuzzi ◽  
...  
Keyword(s):  
Lignocellulosic Biomass ◽  
Second Generation ◽  
Weight Ratio ◽  
Value Added ◽  
Acid Catalyst ◽  
Arundo Donax ◽  
Giant Reed ◽  
Main Reaction ◽  
Arundo Donax L ◽  
Amberlyst 70

Lignocellulosic biomass represents one of the most important feedstocks for future biorefineries, being a precursor of valuable bio-products, obtainable through both chemical and biological conversion routes. Lignocellulosic biomass has a complex matrix, which requires the careful development of multi-step approaches for its complete exploitation to value-added compounds. Based on this perspective, the present work focuses on the valorization of hemicellulose and cellulose fractionsof giant reed (Arundo donax L.) to give second-generation sugars, minimizing the formation of reaction by-products. The conversion of hemicellulose to xylose was undertaken in the presence of the heterogeneous acid catalyst Amberlyst-70 under microwave irradiation. The effect of the main reaction parameters, such as temperature, reaction time, catalyst, and biomass loadings on sugars yield was studied, developing a high gravity approach. Under the optimised reaction conditions (17 wt% Arundo donax L. loading, 160 °C, Amberlyst-70/Arundo donax L. weight ratio 0.2 wt/wt), the xylose yield was 96.3 mol%. In the second step, the cellulose-rich solid residue was exploited through the chemical or enzymatic route, obtaining glucose yields of 32.5 and 56.2 mol%, respectively. This work proves the efficiency of this innovative combination of chemical and biological catalytic approaches, for the selective conversion of hemicellulose and cellulose fractions of Arundo donax L. to versatile platform products.

scholarly journals Catalytic condensation of phenol with formaldehyde into BPF on recyclable anchoring sulfuric acid

2020 ◽  
Vol 213 ◽  
pp. 01003
Author(s):  
Hui Li ◽  
Xi Cao ◽  
Huiting He ◽  
Jian Liu ◽  
Weijian Xiang ◽  
...  
Keyword(s):  
Sulfuric Acid ◽  
Solid Acid Catalyst ◽  
Acid Catalyst ◽  
Catalytic Performance ◽  
Significant Loss ◽  
High Yield ◽  
Element Analysis ◽  
Simple Filtration ◽  
Ft Ir ◽  
The Mind

A novel solid-acid catalyst (PVC-EDA-SO4H) based on polyvinyl chloride (PVC) were prepared after amination of Ethylenediamine (EDA) and anchorage of sulfuric acid. The as-prepared catalyst was characterized by FT-IR, Element analysis, Chemical titration and Thermal analysis, the results indicated that the sulfuric acid was successfully anchored on PVC. The PVC-EDA-SO4H showed excellent catalytic performance for the synthesis of bisphenol F, and achieved almost high yield and selectivity (94%) of BPF under the mind reaction conditions. Meanwhile, exhibited excellent reusability without the significant loss after six cycles via simple filtration.

scholarly journals Immobilization of Lewis acidic ionic liquid on perlite nanoparticle surfaces as a highly efficient solid acid catalyst for the solvent-free synthesis of xanthene derivatives

RSC Advances ◽  
2019 ◽  
Vol 9 (35) ◽  
pp. 19940-19948 ◽  
Author(s):  
L. Moradi ◽  
M. Mirzaei
Keyword(s):  
Ionic Liquid ◽  
Solid Acid Catalyst ◽  
Acid Catalyst ◽  
Solvent Free ◽  
High Yield ◽  
Efficient Catalyst ◽  
Acidic Ionic Liquid ◽  
Highly Efficient ◽  
Xanthene Derivatives ◽  
Lewis Acidic Ionic Liquid

Perlite nanoparticles were prepared, modified with Lewis acidic ionic liquid, and used as a highly efficient catalyst for the eco-friendly, solvent free and high yield synthesis of xanthenesviaa multicomponent reaction.

Comparative potentiality of Kans grass (Saccharum spontaneum) and Giant reed (Arundo donax) as lignocellulosic feedstocks for the release of monomeric sugars by microwave/chemical pretreatment

Cellulose ◽  
2014 ◽  
Vol 21 (3) ◽  
pp. 1327-1340 ◽  
Author(s):  
Tidarat Komolwanich ◽  
Patomwat Tatijarern ◽  
Sirirat Prasertwasu ◽  
Darin Khumsupan ◽  
Thanyalak Chaisuwan ◽  
...  
Keyword(s):  
Arundo Donax ◽  
Giant Reed ◽  
Saccharum Spontaneum ◽  
Chemical Pretreatment ◽  
Lignocellulosic Feedstocks

scholarly journals Second generation bioethanol production from Arundo donax biomass: an optimization method

2018 ◽  
Vol 148 ◽  
pp. 728-735 ◽  
Author(s):  
Sebastian Brusca ◽  
Salvatore Luciano Cosentino ◽  
Fabio Famoso ◽  
Rosario Lanzafame ◽  
Stefano Mauro ◽  
...  
Keyword(s):  
Second Generation ◽  
Optimization Method ◽  
Arundo Donax ◽  
Bioethanol Production ◽  
Second Generation Bioethanol

scholarly journals Alternative Lime Pretreatment of Corn Stover for Second-Generation Bioethanol Production

Agronomy ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 155
Author(s):  
Iria Fírvida ◽  
Pablo G. del Río ◽  
Patricia Gullón ◽  
Beatriz Gullón ◽  
Gil Garrote ◽  
...  
Keyword(s):  
Corn Stover ◽  
Second Generation ◽  
Solid Phase ◽  
Enzymatic Saccharification ◽  
Effect Of Temperature ◽  
Ethanol Conversion ◽  
Second Generation Bioethanol ◽  
Lime Pretreatment ◽  
Simultaneous Saccharification ◽  
Successful Production

In this work, a delignification process, using lime (Ca(OH)2) as an alternative alkali, was evaluated to improve enzymatic saccharification of corn stover cellulose, with the final goal of obtaining second-generation bioethanol. For that, an experimental design was conducted in order to assay the effect of temperature, lime loading, and time on the corn stover fractionation and enzymatic susceptibility of cellulose. Under conditions evaluated, lime pretreatment was selective for the recovery of cellulose (average of 91%) and xylan (average of 75.3%) in the solid phase. In addition, operating in mild conditions, a delignification up to 40% was also attained. On the other hand, a maximal cellulose-to-glucose conversion (CGCMAX) of 89.5% was achieved using the solid, resulting from the treatment carried out at 90 °C for 5 h and lime loading of 0.4 g of Ca(OH)2/g of corn stover. Finally, under selected conditions of pretreatment, 28.7 g/L (or 3.6% v/v) of bioethanol was produced (corresponding to 72.4% of ethanol conversion) by simultaneous saccharification and fermentation. Hence, the process, based on an alternative alkali proposed in this work, allowed the successful production of biofuel from the important and abundant agro-industrial residue of corn stover.

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