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Most Downloaded Articles
- Micro- and Macromechanics of Hopper Discharge of Ultrafine Cohesive Powder by Tomas, Jürgen and Kache, Guido
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- Fischer Tropsch Synthesis: The Promoter Effects, Operating Conditions, and Reactor Synthesis by Sarkari, Majid/ Fazlollahi, Farhad and Atashi, Hossein
- A Trickle Fixed-Bed Recycle Reactor Model for the Fischer-Tropsch Synthesis by Brunner, Kyle M./ Duncan, Joshua C./ Harrison, Luke D./ Pratt, Kyle E./ Peguin, Robson P. S./ Bartholomew, Calvin H. and Hecker, William C.
- A Comprehensive Review of Just Suspended Speed in Liquid-Solid and Gas-Liquid-Solid Stirred Tank Reactors by Jafari, Rouzbeh/ Chaouki, Jamal and Tanguy, Philippe A.
Dye Decolorization by Immobilized Laccase: Statistical Optimization and Effect of Impeller Geometry
1University of Malaya, email@example.com
2University of Malaya, firstname.lastname@example.org
3University of Malaya, email@example.com
Citation Information: International Journal of Chemical Reactor Engineering. Volume 9, Issue 1, Pages –, ISSN (Online) 1542-6580, DOI: 10.1515/1542-6580.2534, July 2011
- Published Online:
Laccase enzyme from Trametes versicolor was immobilized using calcium-alginate entrapment method to decolorize triphenylmethane dye. Selected variables namely initial dye concentration (ppm), agitation speed (rpm) and process time (day) were optimized using response surface methodology (RSM) Box-Behnken design protocol. Under optimal conditions, good percentage of crystal violet decolorization was observed. Experiments were scaled up to a one litre (1 L) stirred tank reactor (STR) to examine the effects of impeller speed and geometry. In both the shake flask and stirred vessel study, lower initial dye concentration showed greater removal of dye. The dye removal achieved in the stirred tank ranged from 14 percent to 36 percent. A 6-blade mixed flow impeller (6MFD) showed better removal than a radial 6-curved blade (6CB) impeller, at the same agitation speeds, albeit with higher power demand. The effect of impeller speed depended on level of dye concentration and impeller type; speed was important at low concentration for the 6MFD while the exact opposite was true for the 6CB.