منابع مشابه
Correlative biosorption equilibria model for a binary batch system
The binary sorption of copper and nickel ions onto peat has been studied. Equilibrium isotherms have been determined for three di!erent copper : nickel molar concentration ratios. The experimental results have been analysed using an extended multicomponent Langmuir equation with a competition term but the correlation between the experimental and the predicted values was poor. An interaction fac...
متن کاملPrediction of two-metal biosorption equilibria using a neural network
A feedforward neural network model with a single hidden layer was used to correlate and predict biosorption equilibrium data in a binary metal system. Experimental data on the biosorption of Fe(III) and Cr(VI) by the microalga Chlorella vulgaris reported in the literature was used to assess the performance of the neural network. It was demonstrated that the neural network approach was significa...
متن کاملDescription of two-metal biosorption equilibria by Langmuir-type models.
A biosorbent prepared from Ascophyllum nodosum seaweed biomass, FCAN2, was examined for its sorption capacity. Equilibrium batch sorption studies were performed using two-matal systems containing either (Cu + Zn), (Cu + Cd), or (Zn + Cd). In the evaluation of the two-metal sorption system performance, simple isotherm curves had to be replaced by three-dimensional sorption isotherm surfaces. In ...
متن کاملChemical equilibria studies using multivariate analysis methods.
Chemical multiequilibria systems can be monitored efficiently with the aid of spectroscopic techniques. Both hard- and soft-modeling are effective and powerful tools to extract chemical information from spectroscopic data. Recently, hybrid approaches that combine the flexibility of soft-modeling with the precise solutions provided by hard-modeling have been proposed. Here, we tested the perform...
متن کاملUniqueness of chemical equilibria in ideal mixtures of ideal gases
We prove the uniqueness of chemical equilibrium for an ideal mixture of ideal gases in a closed, spatially homogeneous volume. Uniqueness, a fundamental issue of chemical physics, is incompletely justified in textbooks and much of the scientific literature. We first reproduce a little known proof by Zel’dovich and show in a more direct fashion than originally presented that a unique equilibrium...
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ژورنال
عنوان ژورنال: Revista de Metalurgia
سال: 2007
ISSN: 1988-4222,0034-8570
DOI: 10.3989/revmetalm.2007.v43.i1.49