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Studies on the extraction of polyphenolic compounds from pre-consumer organic solid waste
Selvakumar P.,Sivashanmugam P. 한국공업화학회 2020 Journal of Industrial and Engineering Chemistry Vol.82 No.-
Waste disposal and treatment are some of the major problems faced in food processing industries, and improper disposal can cause damages to the environment along with adverse effect on human health. Since these wastes contain important biologically active compounds, they can effectively contribute to the production of value added products. The extraction of polyphenolic compounds from pomegranate fruit peel using different solvents with the assistance of non-ionic surfactant dimethyl sulfoxide was investigated. The maximum extract yield and total polyphenolic content obtained were 29.3 ± 0.4 and 32.62 ± 0.2%, respectively. The extracted polyphenolic compounds could be used for the manufacturing of many value added products.
V. Aravindan,P. Vickramana,A. Sivashanmugam,R. Thirunakaran,S. Gopukumar 한국물리학회 2013 Current Applied Physics Vol.13 No.1
This paper describes the physico-chemical and electrochemical properties of polyvinylidenefluoridehexafluoropropylene (PVdF-HFP) membranes (GPM) prepared by phase inversion technique. Nanocomposite polymer membranes (NCPM) are also prepared by the same technique using AlO(OH)n nanoparticles. The prepared GPM and NCPM are gelled with liquid electrolyte containing three different salts namely, lithium bis(oxalate)borate, lithium fluoroalkylphosphate and lithium difluoro(oxalato) borate. Prepared membranes were subjected to various physico-chemical characterizations likely, mechanical stability, ionic conductivity, morphological studies, surface area and thermal analysis. Electrochemical chemical properties of membranes are evaluated in half-cell configurations (Li/NCPM or GPM/LiFePO4) at room temperature conditions. Galvanostatic cycling profiles clearly indicates the improved performance of chelato borate based anions i.e. BOB and DFOB when compared to fluoroalkyl group (FAP).
D. Ankamma Rao,P. Sivashanmugam 한국공업화학회 2010 Journal of Industrial and Engineering Chemistry Vol.16 No.1
Experimental and simulation investigation on power consumption in new energy saving turbine agitator has been presented here. Modification was done by introducing single and double rectangular and V cuts in the conventional turbine agitator. The power consumption for new energy-saving turbine agitator has been found to be less than that of the conventional turbine agitator. Also, the power consumption for V cut has been found to be less than that of rectangular cut in turbine agitator. Power characteristics for different geometrical parameters of energy saving turbine agitators were obtained for both the transition and turbulent regimes of the flow in agitated vessel. CFD simulations have been used to predict power consumption. The simulation results have been compared with the experimental data obtained on a pilot-scale set up.