Leevijit, T., Wisutmethangoon, W., Prateepchaikul, G., Tongurai, C., Allen, M. Design and test of a continuous reactor for palm oil transesterification Songklanakarin J. Sci. Technol., 2006, 28(4) : 791-802 The continuous reactor for transesterification of refined palm oil with methanol was designed and tested. The reaction condition was focused at ambient pressure, temperature of 60oC, molar r...

This contribution presents program in MATLAB’s Graphical User Interface (GUI) which can be used for investigating of the static and dynamic behaviour and adaptive control of the nonlinear system represented by Continuous Stirred Tank Reactor (CSTR). Program provides computation for various values of the input variables which made this program universal for the wide range of the users without th...

An evaluation of the chromium(VI) adsorption capacity of four magnetite sorbents coated with a polymer phase containing polymethacrylic acid or polyallyl-3-methylimidazolium is presented. Factors that influence the chromium(VI) removal such as solution pH and contact time were investigated in batch experiments and in stirred tank reactor mode. Affinity and rate constants increased with the mola...

A non-linear modelling technique is presented which uses a non-parametric bilinear representation in the form of a linear and a series of bilinear impulse coefficients. The technique is applied in simulation to the identification of a non-linear continuous stirred tank reactor (CSTR) and the resulting model is shown to satisfy correlation based non-linear validity tests. It is also compared wit...

This paper deals with a catalytic continuous stirred tank reactor (CCSTR) example, mo deled as a two-input constrained nonlinear system. Based on the Lyapunov-based linearization strategy, the saturation-type parameterized control design can reduce the effect of actuator subject to amplitude and rate constraints, and the integrated two-input control framework can ensure the asymptotic output re...

In this paper, a method to build asymptotic estimators for continuous stirred tank reactor in the case of constant pressure and constant volume liquid phase is proposed. The estimator is based on the measurement of temperature and some concentrations. This method works for highly nonlinear reactions, with realistic thermodynamic properties and is based on the preservation of two fundamental con...

Open loop dynamic stability is a major feature of operability. An optimization approach for open loop stable process design is presented. It is based on Lyapunov’s stability theory and formulated as an eigenvalue optimization problem. The resultant non-linear semi-definite programming problem is reformulated into an interior-point / logarithmic-barriertransformation programming problem. The pro...

The treatment of an effluent from the production of trifluraline was studied using a 1-L, semi-batch, tank-stirred glass reactor for performing three different advanced oxidation processes (photoperoxidation, Fenton, photo-Fenton). A commercial, medium-pressure mercury lamp was used for sample irradiation. The degradation was monitored by measurements of absorptiometric color reduction, UV-visi...

Experiments on the Belousov-Zhabotinsky reaction in a well-stirred flow reactor elucidate one of the routes to chaos, subharmonic intermittency (type III interminency). Measurements conducted as a function of two independent control parameters demonstrate how difficult it is in practice to distinguish this route to chaos from subcritical period doubling transitions with similar chaotic time sig...

Principal differential analysis (PDA) is an alternative parameter estimation technique for differential equation models in which basis functions (e.g., B-splines) are fitted to dynamic data. Derivatives of the resulting empirical expressions are used to avoid solving differential equations when estimating parameters. Benefits and shortcomings of PDA were examined using a simple continuous stirr...