Study on chemical kinetics and characterization of nanosilica from rice husk and rice straw in the fixed-bed pyrolysis process

2020 ◽  
Author(s):  
Neha Gautam ◽  
Athira Merlin Rose K. V. ◽  
Ashish Chaurasia
Keyword(s):  
Chemical Kinetics ◽  
Rice Straw ◽  
Rice Husk ◽  
Fixed Bed ◽  
Pyrolysis Process

scholarly journals Optimization and Characterization of Bio-oil Produced from Rice Husk Using Surface Response Methodology

2020 ◽  
Vol 0 (0) ◽  
Author(s):  
Ige Ayodeji Rapheal ◽  
Elinge Cosmos Moki ◽  
Aliyu Muhammad ◽  
Gwani Mohammed ◽  
Lawal Hassan Gusau
Keyword(s):  
Particle Size ◽  
Rice Husk ◽  
Fixed Bed ◽  
Production Optimization ◽  
Fixed Bed Reactor ◽  
Pyrolysis Process ◽  
Surface Response Methodology ◽  
Chemical Efficiency ◽  
Bio Oil

AbstractThe study depicts the production, optimization and characterization of bio-oil from pyrolyzed rice husk using a fabricated fixed bed reactor. The pyrolysis process was conducted with bio-oil response, bio-char response and non-condensable gases response as products. The effect of pyrolysis variables were observed by the production of the bio-oil as the response. Sixty runs of pyrolysis experiments were suggested by Box Benkhen design indicated optimum pyrolysis conditions at particle size of 2.03mm mesh, reaction time of 81.80 mins and temperature of 650oC for rice husk. The maximum bio-oil yield was obtained with 38.39% at optimum condition of the variables. The bio-oil sample obtained had better performance compared with ASTM standard. Such a determination would contribute so immensely to a significant comprehension of the chemical efficiency of the pyrolysis reaction.

scholarly journals Morphology and Physical Properties, Colored Cotton Fabric, from the Biowashing Process Using Cellulase Enzymes Derived from Straw and Rice Husk Fermentation by Aspergillus niger Bacteria

2019 ◽  
Vol 4 (2) ◽  
pp. 98
Author(s):  
Eka Oktariani ◽  
Ika Natalia Mauliza ◽  
Ikhwanul Muslim
Keyword(s):  
Aspergillus Niger ◽  
Physical Properties ◽  
Rice Straw ◽  
Cotton Fabric ◽  
Rice Husk ◽  
Enzyme Concentration ◽  
Morphological Transformation ◽  
Colored Cotton ◽  
Denim Fabric

<p>Cellulose enzymes are widely use for biowashing process. It was derived from Aspergillus niger fermentation using rice straw and husk as inoculum medium. In this research, cellulose enzyme was applicated on denim fabric with various enzyme concentration 1%, 2%, 3% owf at 60<sup>o</sup>C and pH 7, liquor ratio 1: 20 for 30 minutes. Characterization of fabric are analized using Scanning Electrone Microscope shows morphological transformation indicate the decrease fabric tensile strenght and stiffness. Denim fabric treatment by 3% cellulose enzyme using rice straw substrate gives morphological and fabric properties characterization similiar with denim fabric treatment by commecial cellulose enzyme.</p>

Characterization of Biochar from Pyrolysis of Rice Husk and Rice Straw

2015 ◽  
Vol 9 (4) ◽  
pp. 439-446 ◽  
Author(s):  
Ho Thi Phuong ◽  
Md. Azhar Uddin ◽  
Yoshiei Kato
Keyword(s):  
Rice Straw ◽  
Rice Husk

Production and Characterization of Rice Husk Chars Obtained under Different Conditions

2013 ◽  
Vol 805-806 ◽  
pp. 228-231
Author(s):  
Wen Yan Li ◽  
Lei Qiang Zhao ◽  
Hang Tao Liao ◽  
Qiang Lu
Keyword(s):  
Physicochemical Properties ◽  
Carbon Content ◽  
Cooling Rate ◽  
Heating Rate ◽  
Rice Husk ◽  
Fast Pyrolysis ◽  
Pyrolysis Process ◽  
Reaction Conditions ◽  
Resident Time

Rice husk was subjected to slow and fast pyrolysis under different reaction conditions, to investigate the effects of several pyrolysis factors on the physicochemical properties of the rice husk chars, including the pyrolysis heating rate, cooling rate and resident time. The results indicated that the char yield did not show great changes during the slow pyrolysis process, while it was gradually decreased along with the resident time during the fast pyrolysis process. With the elevating of the pyrolysis conditions, the carbon content of the chars was increased monotonically, while the oxygen content was decreased. Moreover, the rice husk and its chars greatly differed in their functional groups, resulting from various decompositon, decarbonylation and aromatization reactions during the pyrolysis process.

Optimization of slow pyrolysis process parameters using a fixed bed reactor for biochar yield from rice husk

2020 ◽  
Vol 132 ◽  
pp. 105412 ◽  
Author(s):  
Fábio Roberto Vieira ◽  
Carlos M. Romero Luna ◽  
Gretta L.A.F. Arce ◽  
Ivonete Ávila
Keyword(s):  
Rice Husk ◽  
Process Parameters ◽  
Fixed Bed ◽  
Fixed Bed Reactor ◽  
Pyrolysis Process ◽  
Slow Pyrolysis

Physiochemical Properties of Pyrolysis Oil Derived from Fast Pyrolysis of Wet and Dried Rice Husk in a Free Fall Reactor

2014 ◽  
Vol 625 ◽  
pp. 604-607 ◽  
Author(s):  
Salman Raza Naqvi ◽  
Yoshimitsu Uemura ◽  
Noridah Binti Osman ◽  
Suzana Yusup ◽  
Mohd Fadhil Nuruddin
Keyword(s):  
Rice Husk ◽  
Oil And Gas ◽  
Fast Pyrolysis ◽  
Fixed Bed ◽  
Free Fall ◽  
Pyrolysis Oil ◽  
Pyrolysis Process ◽  
Physiochemical Properties ◽  
Fuels And Chemicals ◽  
Free Fall Reactor

Rice husk is considered as a massive agricultural lignocellulosic biomass residue for the production of bio-based fuels and chemicals products. The purpose of this study is to investigate the physiochemical properties of the pyrolysis-oil derived from wet and dried rice husk fast pyrolysis process. The experiments were performed in a drop type fixed-bed pyrolyzer at the pyrolysis temperature of 350 to 600 °C. The products, char, pyrolysis-oil and gas, yield are investigated. The pyrolysis-oil derived from dried rice husk contained higher Carbon and Hydrogen and less oxygen contents than the pyrolysis-oil obtained from wet rice husk. FT-IR results showed the oxygenated compounds present in both pyrolysis-oil. The pyrolysis oil from dried rice husk has higher concentration of hydrocarbons as compared to wet rice husk pyrolysis-oil. The dried rice husk pyrolysis-oil produced more phenols and less carboxylic acid as compared to wet rice husk pyrolysis-oil at 500 °C. More volatile released in dried rice husk conversion produced more volatile compounds. These findings suggest that the original moisture present in biomass samples is the major influencing parameter on the thermal degradation of biomass during fast pyrolysis process.

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