scholarly journals Intensification of cellulose hydrolysis process by supercritical water: Obtaining of added value products

2014 ◽  
Author(s):  
Danilo Alberto Cantero Sposetti
Keyword(s):  
Supercritical Water ◽  
Cellulose Hydrolysis ◽  
Added Value ◽  
Hydrolysis Process

The influence of the cellulose hydrolysis process on the structure of cellulose nanocrystals extracted from capim mombaça ( Panicum maximum )

2015 ◽  
Vol 65 ◽  
pp. 496-505 ◽  
Author(s):  
Douglas Ferreira Martins ◽  
Alexandre Bernaldino de Souza ◽  
Mariana Alves Henrique ◽  
Hudson Alves Silvério ◽  
Wilson Pires Flauzino Neto ◽  
...  
Keyword(s):  
Cellulose Nanocrystals ◽  
Cellulose Hydrolysis ◽  
Panicum Maximum ◽  
Hydrolysis Process

scholarly journals Preparation and Characterization of Sulfonated Carbon from Candlenut Shell as Catalyst for Hydrolysis of Cogon Grass Cellulose into Glucose

2020 ◽  
Vol 32 (6) ◽  
pp. 1404-1408
Author(s):  
Taslim ◽  
Dian Halimah Batubara ◽  
Seri Maulina ◽  
Iriany ◽  
Okta Bani
Keyword(s):  
Solid Acid ◽  
Batch Reactor ◽  
Solid Acid Catalyst ◽  
Acid Catalyst ◽  
Cellulose Hydrolysis ◽  
Imperata Cylindrica ◽  
Hydrolysis Process ◽  
Catalyst Production ◽  
Hydrolysis Of

Cogon grass (Imperata cylindrica) is convertible into glucose by hydrolysis process, which usually requires a catalyst. A solid acid catalyst of sulfonated carbon was used in this work. This study aimed to observe the viability of candlenut shell as carbonaceous source in solid acid catalyst production and to characterize the sulfonated carbon. The carbonization was performed at 250-550 ºC for 4 h, while sulfonation was carried out at 100-180 ºC for 6 h. Sulfonated carbon was then characterized by H+ activity/acid density test, scanning electron microscopy-energy dispersive X-ray spectroscopy (SEM-EDX) and Fourier transform infrared (FTIR) spectroscopy. Sulfonated carbon was then tested as a heterogeneous catalyst for hydrolysis reaction. The reaction was performed in a stainless steel batch reactor at 100 ºC for 6 h. Glucose formed by hydrolysis was measured by dinitrosalicylic acid (DNS) method. Results of this study suggested that sulfonated carbon derived from candlenut shell may be used as a catalyst for cogon grass cellulose hydrolysis to produce glucose

scholarly journals BIOETHANOL PRODUCTION FROM COCONUT HUSK USING THE WET GAMMA IRADIATION METHOD

2021 ◽  
Vol 14 (2) ◽  
pp. 43
Author(s):  
Putra Oktavianto ◽  
Risdiyana Setiawan ◽  
Ilhami Ariyanti ◽  
Muhammad Fadhil Jamil
Keyword(s):  
Saccharomyces Cerevisiae ◽  
Cellulose Hydrolysis ◽  
Raw Material ◽  
Bioethanol Production ◽  
Coconut Husk ◽  
Hydrolysis Process ◽  
Hydrolysis Of Cellulose ◽  
Ethanol Ethanol ◽  
Hydrolysis Of ◽  
Low Dosage

BIOETHANOL PRODUCTION FROM COCONUT HUSK USING the WET GAMMA IRRADIATION METHOD. The use of coconut husk has only been used as a material for making handicrafts such as ropes, brooms, mats, and others or just burned. The combustion of coconut husk can cause air pollution. In fact, coconut husk can be used as a raw material for bioethanol production so that the beneficial value of coconut husk will also increase. One way of bioethanol production from coconut husk is by irradiating the coconut husk. The coconut husk irradiation technique to be carried out in this study is the wet irradiation technique. Wet irradiation is carried out to accelerate the process of bioethanol production because at the time of irradiation, cellulose has been hydrolyzed and glucose has been formed so that it is more efficient in time and use of the material so that the cellulose hydrolysis process is not necessary. The coconut husk samples were wet because they were mixed with 4% NaOH and were irradiated using a gamma irradiator from STTN-BATAN Yogyakarta with a dose of 30 kGy and 50 kGy and 0 kGy (or without irradiation). Then the sample is fermented with the fungus Saccharomyces Cerevisiae from tape yeast to form ethanol. Ethanol is purified and then analyzed for concentrations using pycnometric and refractometric methods. The result is that the highest ethanol content is without irradiation (0 kGy), this is due to the low dosage used. However, the main point in this wet method research is evidence of hydrolysis of cellulose by the formation of gluoxane after irradiated wet coconut husk, and with Fehling A and B analysis, brown deposits are seen proving that glucose has been formed.

Cellulose hydrolysis in supercritical water to recover chemicals

2000 ◽  
pp. 205-220 ◽  
Author(s):  
T. Adschiri ◽  
M. Sasaki ◽  
Z. Fang ◽  
Y. Fukushima ◽  
K. Arai
Keyword(s):  
Supercritical Water ◽  
Cellulose Hydrolysis

Cellulose hydrolysis in subcritical and supercritical water

1998 ◽  
Vol 13 (1-3) ◽  
pp. 261-268 ◽  
Author(s):  
Mitsuru Sasaki ◽  
Bernard Kabyemela ◽  
Roberto Malaluan ◽  
Satoshi Hirose ◽  
Naoko Takeda ◽  
...  
Keyword(s):  
Supercritical Water ◽  
Cellulose Hydrolysis

Improvement of Cellulose Hydrolysis Process and Cost Savings

2015 ◽  
Vol 11 (8) ◽  
Author(s):  
Massimo Calabrese ◽  
Elena Spessot ◽  
Paolo Bogoni ◽  
Barbara Campisi
Keyword(s):  
Cost Savings ◽  
Cellulose Hydrolysis ◽  
Hydrolysis Process
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