Characterization and process optimization of microwave drying of plaster of Paris

M., Ganesapillai and I., Regupathi and T., Murugesan (2008) Characterization and process optimization of microwave drying of plaster of Paris. Drying Technology, 26 (12). pp. 1484-1496. ISSN 7373937

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The changes in the characteristics of plaster of Paris (pop) during drying operation under microwave irradiation conditions, namely surface morphology, effective moisture diffusivity, and absorption of microwave, were studied. The drying characteristics and kinetics of the process during microwave drying of plaster were studied for rectangular-faced cuboids (80 × 70 × 15, L × B × H in mm) through various drying parameters like microwave power input, initial moisture content, and drying time. Further, the experimental data on moisture ratio of plaster for different operating conditions were obtained and the optimization of the microwave drying process parameters was performed with response surface methodology (RSM) by considering all the above-said independent variables. Based on the RSM analysis, the optimum values of the process variables were obtained as: initial moisture content (A) 60%; microwave power input (B) 180 W; and drying time (C) 480 S.

Item Type:Article
Uncontrolled Keywords:Curing; Dewatering; Drying; Microwave generation; Microwave heating; Microwave irradiation; Microwave power transmission; Moisture; Moisture determination; Optimization; Plaster; Different operating conditions; Drying characteristics; Drying operations; Drying parameters; Drying times; Effective moisture diffusivities; Experimental datums; Independent variables; Initial moisture contents; Irradiation conditions; Microwave drying; Microwave drying processes; Microwave powers; Moisture ratios; Optimum values; Process optimizations; Process variables; Response surface methodologies; Microwaves
Subjects:T Technology > TP Chemical technology
Departments / MOR / COE:Departments > Chemical Engineering
ID Code:563
Deposited By: Prof Dr Thanabalan Murugesan
Deposited On:09 Mar 2010 02:07
Last Modified:19 Jan 2017 08:26

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