Submitted on: 26 January 2009.
Revised on: 03 March 2009.
Accepted on: 08 April 2009.
___________________Asia-Pacific Journal of Chemical Engineering
Submitted on: 05 January 2015.
Revised on: 15 February 2015.
Accepted on: 11 March 2015.
___________________Asia-Pacific Journal of Chemical Engineering
Submitted on: 03 April 2015.
Revised on: 29 May 2015.
Accepted on: 26 July 2015.
___________________Asia-Pacific Journal of Chemical Engineering
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