Transport of p-nitrophenol in an agitated bulk liquid membrane system – Experimental and theoretical study by network analysis

摘要: Abstract A predictive mathematical model has been developed to simulate the pertraction of phenolic compounds in agitated bulk liquid membrane system (ABLM). bond-graph method, based on pseudo-thermodynamic network analysis, was applied for detailed description three steps mechanism, i.e., extraction, diffusion, and re-extraction with neutralization reaction stripping solution. The corresponding (a set ordinary differential equations) solved predict time evolution local fluxes concentrations p-nitrophenol (PNP) experimental system: PNP aq. soln.|tolunene|NaOH soln. calculations were carried out mainly data accessible literature (diffusion coefficients, thickness diffusion layers) or measured independent experiments (extraction kinetic constants, equilibrium distribution coefficient). results numerical compared transport data. It found that calculation procedures allow prediction dependent-concentration profiles transported species feed, membrane, solution as a function operating parameters (volumes, concentrations), well mechanism (distribution constants).