Hydrolysis of cellulose and woody biomass over sustainable weak-acid carbon catalysts from alkaline lignin

2019 ◽  
Vol 196 ◽  
pp. 106175 ◽  
Author(s):  
Irwan Kurnia ◽  
Akihiro Yoshida ◽  
Nichaboon Chaihad ◽  
Asep Bayu ◽  
Yutaka Kasai ◽  
...  
Keyword(s):  
Woody Biomass ◽  
Weak Acid ◽  
Hydrolysis Of Cellulose ◽  
Carbon Catalysts ◽  
Hydrolysis Of

Hydrolysis of cellulose by carbon catalysts with weak acid sites

Carbon ◽  
2021 ◽  
Vol 175 ◽  
pp. 614
Author(s):  
Hirokazu Kobayashi ◽  
Atsushi Fukuoka
Keyword(s):  
Acid Sites ◽  
Weak Acid ◽  
Hydrolysis Of Cellulose ◽  
Carbon Catalysts ◽  
Hydrolysis Of

Hydrolysis of cellulose by carbon catalysts with weak acid sites

TANSO ◽  
2019 ◽  
Vol 2019 (290) ◽  
pp. 211-218
Author(s):  
Hirokazu Kobayashi ◽  
Atsushi Fukuoka
Keyword(s):  
Acid Sites ◽  
Weak Acid ◽  
Hydrolysis Of Cellulose ◽  
Carbon Catalysts ◽  
Hydrolysis Of

Adsorption-enhanced hydrolysis of glucan oligomers into glucose over sulfonated three-dimensionally ordered mesoporous carbon catalysts

2016 ◽  
Vol 18 (24) ◽  
pp. 6637-6647 ◽  
Author(s):  
Paul Dornath ◽  
Stephen Ruzycky ◽  
Shintaro Pang ◽  
Lili He ◽  
Paul Dauenhauer ◽  
...  
Keyword(s):  
Mesoporous Carbon ◽  
Ordered Mesoporous Carbon ◽  
Ordered Mesoporous ◽  
Hydrolysis Of Cellulose ◽  
Carbon Catalysts ◽  
Hydrolysis Of

The hydrolysis of cellulose and β(1 → 4) oligosaccharides on carbon catalysts is a promising approach for the selective production of glucose from cellulose and its derivatives.

Hydrolysis of cellulose to glucose over carbon catalysts sulfonated via a plasma process in dilute acids

2017 ◽  
Vol 19 (20) ◽  
pp. 4774-4777 ◽  
Author(s):  
Oi Lun Li ◽  
Ryuhei Ikura ◽  
Takahiro Ishizaki
Keyword(s):  
Carbon Materials ◽  
Dilute Acid ◽  
Plasma Process ◽  
Hydrolysis Of Cellulose ◽  
Carbon Catalysts ◽  
Hydrolysis Of

A sulfonation route for carbon materials under dilute acid conditions via a plasma process.

Immobilized Nanoparticles-Mediated Enzymatic Hydrolysis of Cellulose for Clean Sugar Production: A Novel Approach

2019 ◽  
Vol 15 (3) ◽  
pp. 296-303 ◽  
Author(s):  
Swapnil Gaikwad ◽  
Avinash P. Ingle ◽  
Silvio Silverio da Silva ◽  
Mahendra Rai
Keyword(s):  
Catalytic Activity ◽  
Enzymatic Hydrolysis ◽  
Immobilized Enzyme ◽  
Free Enzyme ◽  
Magnetic Nanomaterials ◽  
Sugar Production ◽  
Cellulase Enzyme ◽  
Enzymatic Hydrolysis Of Cellulose ◽  
Hydrolysis Of Cellulose ◽  
Hydrolysis Of

Background: Enzymatic hydrolysis of cellulose is an expensive approach due to the high cost of an enzyme involved in the process. The goal of the current study was to apply magnetic nanomaterials as a support for immobilization of enzyme, which helps in the repeated use of immobilized enzyme for hydrolysis to make the process cost-effective. In addition, it will also provide stability to enzyme and increase its catalytic activity. Objective: The main aim of the present study is to immobilize cellulase enzyme on Magnetic Nanoparticles (MNPs) in order to enable the enzyme to be re-used for clean sugar production from cellulose. Methods: MNPs were synthesized using chemical precipitation methods and characterized by different techniques. Further, cellulase enzyme was immobilized on MNPs and efficacy of free and immobilized cellulase for hydrolysis of cellulose was evaluated. Results: Enzymatic hydrolysis of cellulose by immobilized enzyme showed enhanced catalytic activity after 48 hours compared to free enzyme. In first cycle of hydrolysis, immobilized enzyme hydrolyzed the cellulose and produced 19.5 ± 0.15 gm/L of glucose after 48 hours. On the contrary, free enzyme produced only 13.7 ± 0.25 gm/L of glucose in 48 hours. Immobilized enzyme maintained its stability and produced 6.15 ± 0.15 and 3.03 ± 0.25 gm/L of glucose in second and third cycle, respectively after 48 hours. Conclusion: This study will be very useful for sugar production because of enzyme binding efficiency and admirable reusability of immobilized enzyme, which leads to the significant increase in production of sugar from cellulosic materials.

In Situ Microscopy for In-line Monitoring of the Enzymatic Hydrolysis of Cellulose

2013 ◽  
Vol 85 (17) ◽  
pp. 8121-8126 ◽  
Author(s):  
Britta Opitz ◽  
Andreas Prediger ◽  
Christian Lüder ◽  
Marrit Eckstein ◽  
Lutz Hilterhaus ◽  
...  
Keyword(s):  
Enzymatic Hydrolysis ◽  
Enzymatic Hydrolysis Of Cellulose ◽  
Hydrolysis Of Cellulose ◽  
Hydrolysis Of

scholarly journals Pretreatment of Switchgrass for Production of Glucose via Sulfonic Acid-Impregnated Activated Carbon

Processes ◽  
2021 ◽  
Vol 9 (3) ◽  
pp. 504
Author(s):  
Yane Ansanay ◽  
Praveen Kolar ◽  
Ratna Sharma-Shivappa ◽  
Jay Cheng ◽  
Consuelo Arellano
Keyword(s):  
Activated Carbon ◽  
Sulfonic Acid ◽  
Solid Acid ◽  
Methanesulfonic Acid ◽  
Biofuel Production ◽  
Acid Catalysts ◽  
Effects Of Temperature ◽  
Carbon Catalysts ◽  
Hydrolysis Of

In the present research, activated carbon-supported sulfonic acid catalysts were synthesized and tested as pretreatment agents for the conversion of switchgrass into glucose. The catalysts were synthesized by reacting sulfuric acid, methanesulfonic acid, and p-toluenesulfonic acid with activated carbon. The characterization of catalysts suggested an increase in surface acidities, while surface area and pore volumes decreased because of sulfonation. Batch experiments were performed in 125 mL serum bottles to investigate the effects of temperature (30, 60, and 90 °C), reaction time (90 and 120 min) on the yields of glucose. Enzymatic hydrolysis of pretreated switchgrass using Ctec2 yielded up to 57.13% glucose. Durability tests indicated that sulfonic solid-impregnated carbon catalysts were able to maintain activity even after three cycles. From the results obtained, the solid acid catalysts appear to serve as effective pretreatment agents and can potentially reduce the use of conventional liquid acids and bases in biomass-into-biofuel production.

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