Production of High Commercial Value Xylooligosaccharides from Meranti Wood Sawdust Using Immobilised Xylanase

2017 ◽  
Vol 184 (1) ◽  
pp. 278-290 ◽  
Author(s):  
Siti Sabrina Mohd Sukri ◽  
A.M. Mimi Sakinah
Keyword(s):  
Wood Sawdust ◽  
Commercial Value

The Commercial Value of Acetylene Gas as an Illuminant

1896 ◽  
Vol 41 (1063supp) ◽  
pp. 16991-16992
Author(s):  
Louis A. Ferguson
Keyword(s):  
Commercial Value

Nano-ZrO2/TiO2 Impregnated Orange Wood Sawdust and Peach Stone Shell Adsorbents for Cr (VI) Removal

2020 ◽  
Vol 16 (7) ◽  
pp. 880-892
Author(s):  
Şerife Parlayıcı ◽  
Kübra Tuna Sezer ◽  
Erol Pehlivan
Keyword(s):  
Contact Time ◽  
Ph Value ◽  
Order Kinetic ◽  
Adsorption Parameters ◽  
Wood Sawdust ◽  
Adsorption Data ◽  
Langmuir Isotherm Model ◽  
Pseudo Second Order ◽  
Ft Ir ◽  
Equilibrium Status

Background: In this work, Cr (VI) adsorption on nano-ZrO2๏TiO2 impregnated orange wood sawdust (Zr๏Ti/OWS) and nano-ZrO2๏TiO2 impregnated peach stone shell (Zr๏Ti/PSS) was investigated by applying different adsorption parameters such as Cr (VI) concentrations, contact time, adsorbent dose, and pH for all adsorbents. Methods: The adsorbents were characterized by SEM and FT-IR. The equilibrium status was achieved after 120 min of contact time and optimum pH value around 2 were determined for Cr (VI) adsorption. Adsorption data in the equilibrium is well-assembled by the Langmuir model during the adsorption process. Results: Langmuir isotherm model showed a maximum adsorption value of OWS: 21.65 mg/g and Zr๏Ti/OWS: 27.25 mg/g. The same isotherm displayed a maximum adsorption value of PSS: 17.64 mg/g, and Zr๏Ti/PSS: 31.15 mg/g. Pseudo-second-order kinetic models (R2=0.99) were found to be the best models for describing the Cr (VI) adsorption reactions. Conclusıon: Thermodynamic parameters such as changes in ΔG°, ΔH°, and ΔS° have been estimated, and the process was found to be spontaneous.

Sal wood sawdust derived highly mesoporous carbon as prospective electrode material for vanadium redox flow batteries

2019 ◽  
Vol 834 ◽  
pp. 94-100 ◽  
Author(s):  
Makhan Maharjan ◽  
Nyunt Wai ◽  
Andrei Veksha ◽  
Apostolos Giannis ◽  
Tuti Mariana Lim ◽  
...  
Keyword(s):  
Electrode Material ◽  
Mesoporous Carbon ◽  
Redox Flow Batteries ◽  
Wood Sawdust ◽  
Flow Batteries ◽  
Vanadium Redox

scholarly journals Additives to Coal-Based Fuel Pellets for the Intensification of Combustion and Reduction in Anthropogenic Gas Emissions

2020 ◽  
Vol 10 (19) ◽  
pp. 6689
Author(s):  
Dmitriy Klepikov ◽  
Tereza Kudelova ◽  
Kristina Paushkina ◽  
Pavel Strizhak
Keyword(s):  
Coal Dust ◽  
Polymer Particle ◽  
Porous Polymer ◽  
Flue Gases ◽  
Sulfur Oxides ◽  
Fuel Composition ◽  
Material Particle ◽  
Wood Sawdust ◽  
Fuel Pellets ◽  
Ignition And Combustion

Cylinder-shaped fuel pellets that were 3 mm in diameter and 3 mm in height, with a mass of 20 mg, were produced by compressing dry coal processing waste under the pressure of 5 MPa. The first group of pellets from coal dust with a particle size less than 140 µm did not contain any additives. The pellets of the second group of fuel compositions contained an oil-impregnated porous polymer material particle with a size of 0.5 mm in the central part of the experimental sample. The particle was surrounded by coal dust from all sides. The ratio of components was 90:10% for coal dust: polymer particle. The latter value almost completely corresponds to the fraction of oil in the fuel composition, since the mass of a porous polymer material particle is negligible. The third group of compositions was a 70:30% mixture of coal dust with wood sawdust with a particle size less than 45 µm, or 45–100, 100–200 and 200–500 µm. The ignition and combustion of single fuel pellets were studied under radiant heating in an air medium while varying the temperature from 800 to 1000 °C. The processes during the fuel combustion were recorded by a high-speed video camera, and the concentrations of the main anthropogenic emissions in flue gases were measured by a gas analyzer. The main characteristics were established—ignition delay times (2–8 s) and duration of burnout (40–90 s)—at different heating temperatures. A difference was established in the combustion mechanisms of the pellets, when adding various components to the fuel mixture composition. This has a direct influence on the induction period duration and combustion time, other conditions being equal, as well as on the concentration of nitrogen and sulfur oxides in the flue gases. Adding an oil-impregnated porous polymer particle to the fuel composition intensifies ignition and combustion, since the times of ignition delay and complete burnout of fuel pellets under threshold conditions decrease by 70%, whereas adding wood sawdust reduces the content of nitrogen and sulfur oxides in the flue gases by 30% and 25%, respectively.

Study of the Manufacture about Piezoelectric Nanogenerator under Micro Vibration and its Performance

2011 ◽  
Vol 105-107 ◽  
pp. 2109-2112
Author(s):  
Jian Guo Sheng ◽  
Ping Zeng ◽  
Can Can Zhang
Keyword(s):  
Piezoelectric Materials ◽  
Science And Technology ◽  
Electrical Energy ◽  
Ambient Vibration ◽  
Magnetic Line ◽  
Vibration Condition ◽  
Working Principle ◽  
Commercial Value ◽  
Micro Vibration ◽  
Piezoelectric Nanogenerators

With the development of science and technology, the smaller sizes generator, the more attention by people. The main purpose of this article is to manufacture piezoelectric nanogenerator under micro vibration and its working principle is introduced and its performance is studied. The results show that, using the present nanomaterials, piezoelectric materials can be prepared. When its wind in copper laps, under the situation of micro pulse vibration its can turn into electrical energy, thus yield piezoelectric nanogenerators. In ambient vibration condition, piezoelectric materials produce larger rated current and voltage. However, copper laps cutting magnetic line of force produce less rated current and voltage. So the piezoelectric nanogenerators can be separately used to supply power. If multiple piezoelectric nanogenerator in tandem may produce higher voltage, current and power, which possess commercial value.

Effects of pH on isotherms modeling for Cu(II) ions adsorption using maple wood sawdust

2009 ◽  
Vol 149 (1-3) ◽  
pp. 273-280 ◽  
Author(s):  
M. Safiur Rahman ◽  
M. Rafiqul Islam
Keyword(s):  
Wood Sawdust ◽  
Effects Of Ph
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