scholarly journals PRETREATMENT OF LIGNOCELLULOSIC BIOMASS FOR ENZYMATIC HYDROLYSIS

2017 ◽  
Vol 25 (2) ◽  
pp. 341-346 ◽  
Author(s):  
Doan Thai Hoa ◽  
Tran Dinh Man ◽  
Ngo Viet Hau
Keyword(s):  
Sulfuric Acid ◽  
Enzymatic Hydrolysis ◽  
Raw Materials ◽  
Industrial Wastes ◽  
Limiting Factor ◽  
Elephant Grass ◽  
Acid Pretreatment ◽  
Dilute Sulfuric Acid ◽  
Dilute Sulfuric Acid Pretreatment ◽  
Pretreatment Conditions

The cost of raw materials continues to be a limiting factor in the production of bio-ethanol from traditional raw materials, such as sugar and starch. At the same time, there are large amount of agricultural residues as well as industrial wastes that are of low or negative value (due to costs of current effluent disposal methods). Dilute sulfuric acid pretreatment of elephant grass and wood residues for the enzymatic hydrolysis of cellulose has been investigated in this study.    Elephant grass (agricultural residue) and sawdust (Pulp and Paper Industry waste) with a small particulate size were treated using different dilute sulfuric acid concentrations at a temperature  of 140-170°C within 0.5-3 hours. The appropriate pretreatment conditions give the highest yield of soluble saccharides and total reducing sugars.   

Dilute Sulfuric Acid Pretreatment and Enzymatic Hydrolysis of Corn Stover into Fermentable Sugars

2012 ◽  
Vol 535-537 ◽  
pp. 2462-2468 ◽  
Author(s):  
Shang Xing Chen ◽  
Qiang Yong ◽  
Yong Xu ◽  
Shi Yuan Yu
Keyword(s):  
Sulfuric Acid ◽  
Enzymatic Hydrolysis ◽  
Corn Stover ◽  
Acid Pretreatment ◽  
Pretreatment Condition ◽  
Structure And Property ◽  
Dilute Sulfuric Acid ◽  
Feature Structure ◽  
Dilute Sulfuric Acid Pretreatment ◽  
Sulfuric Acid Pretreatment

The pretreatment of corn stover with dilute sulfuric acid has been investigated by varying the acid concentration (0.5%-1.25%(w/w)) and the temperature (130-160°C). The pretreatment is aimed at improving enzymatic hydrolysis and increasing the fermentability of the biomass. Given the overall sugar yield, the most favourable pretreatment condition was performed with 0.75% sulfuric acid at 150°C for 30min and then with an enzyme loading of cellulase 15 FPU per gram of cellulose, and it resulted in a total of 49.74g glucose and xylose from 100g dry corn stover. The fiber physical feature, structure and property of pretreated residues were studied with Scanning Electron Microscope (SEM) and Fourier transform infrared spectroscopy. The SEM pictures indicated that the biomass structure was deformed and its fibers were exposed by the pretreatment. FTIR study showed that lignin and hemicellulose were partially removed during the diluted sulfuric acid pretreatment.

scholarly journals Effect of dilute sulfuric acid pretreatment on the physicochemical properties and enzymatic hydrolysis of coffee cut-stems

Energy ◽  
2020 ◽  
Vol 195 ◽  
pp. 116986 ◽  
Author(s):  
Juan Camilo Solarte-Toro ◽  
Yessica Chacón-Pérez ◽  
Sara Piedrahita-Rodríguez ◽  
Jhonny Alejandro Poveda Giraldo ◽  
José António Teixeira ◽  
...  
Keyword(s):  
Sulfuric Acid ◽  
Enzymatic Hydrolysis ◽  
Physicochemical Properties ◽  
Acid Pretreatment ◽  
Dilute Sulfuric Acid ◽  
Dilute Sulfuric Acid Pretreatment ◽  
Sulfuric Acid Pretreatment ◽  
Hydrolysis Of

Dilute sulfuric acid pretreatment of cardoon for ethanol production

2008 ◽  
Vol 42 (1) ◽  
pp. 84-91 ◽  
Author(s):  
Ignacio Ballesteros ◽  
Mercedes Ballesteros ◽  
Paloma Manzanares ◽  
M. José Negro ◽  
J. Miguel Oliva ◽  
...  
Keyword(s):  
Sulfuric Acid ◽  
Ethanol Production ◽  
Acid Pretreatment ◽  
Dilute Sulfuric Acid ◽  
Dilute Sulfuric Acid Pretreatment ◽  
Sulfuric Acid Pretreatment
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