Effect of particle size on the mutual flocculation between zinc oxide and titanium dioxide

1964 ◽  
Vol 19 (9) ◽  
pp. 786-797 ◽  
Author(s):  
L.H Princen ◽  
Marilyn Devena-Peplinski
2006 ◽  
Vol 8 (1) ◽  
pp. 43-51 ◽  
Author(s):  
A. C. Dodd ◽  
A. J. McKinley ◽  
M. Saunders ◽  
T. Tsuzuki

1933 ◽  
Vol 6 (2) ◽  
pp. 288-298
Author(s):  
G. S. Haslam

Abstract The particle size of the pigment may be expressed in terms of several average diameters, depending on the method of measurement. In this work three of these averages were considered; namely, d1, which is the arithmetical mean, d3, which is the average diameter from which specific surface is calculated, and D, which is the average diameter from which the number of particles per gram is calculated. A series of samples was prepared and these three average diameters were determined These samples were then compounded with rubber and several physical properties measured. As a result of these tests it is shown that, in general, the physical properties vary directly as the specific surface and the number of particles per gram. However, if the number of particles per gram is maintained constant and the specific surface is varied, it was found that the physical properties vary directly as the specific surface. No such relationship was found when the specific surface was maintained constant and number of particles per gram varied. It is further pointed out that the only satisfactory means of measuring the d3 diameter, and therefore the specific surface, is by some microscopic method which determines the size-distribution curve for the pigment.


1964 ◽  
Vol 43 (2) ◽  
pp. 252-262 ◽  
Author(s):  
Richard D. Norman ◽  
Ralph W. Phillips ◽  
Marjorie L. Swartz ◽  
Theodore Frankiewicz

2013 ◽  
Vol 2013 ◽  
pp. 1-7 ◽  
Author(s):  
Zaki S. Seddigi ◽  
Saleh A. Ahmed ◽  
Shahid P. Ansari ◽  
Ekram Danish ◽  
Abdullah Abu Alkibash ◽  
...  

Zinc oxide of different average particle sizes 25 nm, 59 nm, and 421 nm as applied in the photodegradation of MTBE. This study was carried out in a batch photoreactor having a high pressure mercury lamp. Zinc oxide of particle size of 421 nm was found to be the most effective in degrading MTBE in an aqueous solution. On using this type of ZnO in a solution of 100 ppm MTBE, the concentration of MTBE has decreased to 5.1 ppm after a period of five hours. The kinetics of the photocatalytic degradation of MTBE was found to be a first order reaction.


Sign in / Sign up

Export Citation Format

Share Document