Intrusive and Non-Intrusive Quantification of Binary Mixture Composition from Strut Injectors in Supersonic Flow

2017 ◽  
Author(s):  
Cody R. Ground ◽  
Davide Vigano' ◽  
Luca Maddalena
Keyword(s):  
Supersonic Flow ◽  
Binary Mixture ◽  
Mixture Composition

scholarly journals Mixing Characteristics of Binary Mixture with Biomass in a Gas-Solid Rectangular Fluidized Bed

Energies ◽  
2019 ◽  
Vol 12 (10) ◽  
pp. 2011
Author(s):  
Guiying Wu ◽  
Bangting Yu ◽  
Yanjun Guan ◽  
Xuehui Wu ◽  
Kai Zhang ◽  
...  
Keyword(s):  
Binary Mixture ◽  
Fluidized Bed ◽  
Binary Mixtures ◽  
Silica Sand ◽  
Mixture Composition ◽  
Inert Material ◽  
Gas Velocity ◽  
Mixing Characteristics ◽  
Superficial Gas Velocity ◽  
Initial Packing

Aiming to better understand the biomass pyrolysis and gasification processes, a detailed experimental study of the mixing characteristics is conducted in a fluidized bed with binary mixtures. Rapeseed is used as biomass, and silica sand or resin as inert material. The effect of mixture composition, initial packing manner, and superficial gas velocity on the concentration distribution is investigated in a rectangular fluidized bed by means of photography and sampling methods. The results show that the mixture composition plays an important role in the axial solids profile of binary mixtures. The mixing behavior of binary mixture is dominated by the bubble movement. The axial distribution of binary mixtures becomes uniform with increasing superficial gas velocity, whilst no obvious effect of initial packing manner is observed in this study.

Comparison of Intrusive and Non-Intrusive Mixture Composition Measurements in Supersonic Flow

2018 ◽  
Vol 34 (6) ◽  
pp. 1574-1585 ◽  
Author(s):  
Cody Ground ◽  
Davide Viganó ◽  
Luca Maddalena
Keyword(s):  
Supersonic Flow ◽  
Mixture Composition ◽  
Composition Measurements

scholarly journals Influence of Tableting on Enzymatic Activity of Papain along with Determination of Its Percolation Threshold with Microcrystalline Cellulose

2014 ◽  
Vol 2014 ◽  
pp. 1-8 ◽  
Author(s):  
Manu Sharma ◽  
Vinay Sharma ◽  
Dipak K. Majumdar
Keyword(s):  
Enzyme Activity ◽  
Binary Mixture ◽  
Percolation Threshold ◽  
Binary Mixtures ◽  
Microcrystalline Cellulose ◽  
Critical Density ◽  
Stability Study ◽  
Mixture Composition ◽  
Brittle Behavior ◽  
Robust Formulation

The binary mixture tablets of papain and microcrystalline cellulose (MCC), dicalcium phosphate dihydrate (DCP), carrageenan, tragacanth, and agar were prepared by direct compression. Carrageenan, tragacanth, and agar provided maximum protection to enzyme activity compared to MCC and DCP. However, stability studies indicated highest loss of enzyme activity with carrageenan, tragacanth, and agar. Therefore, compression behaviour of different binary mixtures of papain with MCC at different compaction pressures, that is, 40–280 MPa, was studied according to Heckel equation. The compressibility studies of binary mixtures indicated brittle behavior of papain. The application of percolation theory on the relationship between critical density as a function of enzyme activity and mixture composition revealed the presence of percolation threshold for binary mixture. Papain-MCC mixture composition showed significant percolation threshold at 18.48% (w/w) papain loading. Microcrystalline cellulose provided higher protection during stability study. However, higher concentrations of microcrystalline cellulose, probably as dominant particles, do not protect the enzyme with their plastic deformation. Below the percolation threshold, that is, 18.48% (w/w) papain amount in mixture with plastic excipient, activity loss increases strongly because of higher shearing forces during compaction due to system dominance of plastic particles. This mixture range should therefore be avoided to get robust formulation of papain.

Sign in / Sign up

Export Citation Format

Share Document