Optimization of hydrous ferrous sulfate dehydration by microwave heating using response surface methodology.
J Microw Power Electromagn Energy
; 46(4): 206-14, 2012.
Article
in En
| MEDLINE
| ID: mdl-24432588
ABSTRACT
The work relates to assessing the ability of the microwave for dehydration of large amount of waste hydrous ferrous sulfate generated from the titanium pigment process industry. The popular process optimization tool of response surface methodology with central composite design was adopted to estimate the effect of dehydration. The process variables were chosen to be power input, duration of heating and the bed thickness, while the response variable being the weight loss. An increase in all the three process variables were found to significantly increase the weight loss, while the effect of interaction among the parameters were found to be insignificant. The optimized process conditions that contribute to the maximum weight loss were identified to be a power input of 960 W, duration of heating of 14 min and bed thickness of 5 cm, resulting in a weight loss of 31.44%. The validity of the optimization process was tested with the repeat runs at optimized conditions.
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Collection:
01-internacional
Database:
MEDLINE
Main subject:
Water
/
Ferrous Compounds
/
Combinatorial Chemistry Techniques
/
Desiccation
/
Heating
/
Industrial Waste
/
Models, Chemical
Type of study:
Prognostic_studies
/
Risk_factors_studies
Language:
En
Journal:
J Microw Power Electromagn Energy
Journal subject:
BIOFISICA
Year:
2012
Type:
Article
Affiliation country:
China