Comparison of the Central Composite Rotatable Design with Doehlert Matrix on the Optimization of the Synthetic Dairy Effluent Treatment

2018 ◽  
Vol 229 (9) ◽  
Author(s):  
Gustavo Lopes Muniz ◽  
Alisson Carraro Borges ◽  
Douglas Venâncio Souza ◽  
Teresa Cristina Fonseca da Silva ◽  
Rafael Oliveira Batista
Keyword(s):  
Effluent Treatment ◽  
Central Composite Rotatable Design ◽  
Dairy Effluent ◽  
Doehlert Matrix ◽  
Central Composite ◽  
Rotatable Design

scholarly journals Optimization of transesterification of castor oil with ethanol using a central composite rotatable design (CCRD)

Fuel ◽  
2010 ◽  
Vol 89 (5) ◽  
pp. 1172-1176 ◽  
Author(s):  
Kiany S.B. Cavalcante ◽  
Maria N.C. Penha ◽  
Karlene K.M. Mendonça ◽  
Hilton C. Louzeiro ◽  
Antonio C.S. Vasconcelos ◽  
...  
Keyword(s):  
Castor Oil ◽  
Central Composite Rotatable Design ◽  
Central Composite ◽  
Rotatable Design

Modeling and Optimizing of Mechanically Agitated Vessels by Central Composite Rotatable Design Method

2011 ◽  
Vol 9 (1) ◽  
Author(s):  
Ramin Zadghaffari ◽  
Jafarsadegh Moghaddas ◽  
F. Fakheri ◽  
H. Razmi ◽  
H. Heidari
Keyword(s):  
Gas Flow ◽  
Design Method ◽  
Mixing Time ◽  
Central Composite Rotatable Design ◽  
Two Phase ◽  
Injection Point ◽  
Tracer Injection ◽  
Operating Variables ◽  
Central Composite ◽  
Rotatable Design

A central composite rotatable design (CCRD) methodology was used to analyze the effect of some operating variables on gas-liquid two phase mixing time in an agitated tank driven by dual 6-blade Rushton turbines. The variables chosen were the impellers rotational speed (x1), gas flow rate (x2), probe location (x3) and tracer injection point (x4). The mathematical relationship of mixing time on the four significant independent variables can be approximated by a nonlinear polynomial model. Predicted values were found to be in good agreement with the experimental values (R-sq of 95.9 percent and R-Sq (Adj) of 95.7 percent for response Y). This study has shown that central composite design could efficiently be applied for the modeling of mixing time, and it is an economical way of obtaining the maximum amount of information with the fewest number of experiments.

scholarly journals Optimization of acid mine drainage remediation with central composite rotatable design model

2017 ◽  
Vol 136 ◽  
pp. 233-238 ◽  
Author(s):  
Dámaris Núñez-Gómez ◽  
Flávio Rubens Lapolli ◽  
Maria Elisa Nagel-Hassemer ◽  
María Ángeles Lobo-Recio
Keyword(s):  
Acid Mine Drainage ◽  
Mine Drainage ◽  
Design Model ◽  
Central Composite Rotatable Design ◽  
Acid Mine ◽  
Central Composite ◽  
Rotatable Design
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