Showing papers by "Reza Fazaeli published in 2009"
TL;DR: The relative stability of Molybdate-Phosphonic acid (MPA) complex in gas phase has been carried out using Density Functional Theory (DFT) methods as mentioned in this paper.
Abstract: The relative stability of Molybdate-Phosphonic Acid (MPA) Complex in gas phase has been carried out using Density Functional Theory (DFT) methods The methods used for calculations are B3LYP, BP86 and B3PW91, with three series of basis sets: D95**, 6-31+G (d,p) and 6-31++G (d,p) for hydrogen and oxygen atoms; LANL2DZ for Mo and Phosphorus Predicted geometry and relative stability are discussed Equilibrium geometry in the ground electronic state energy has been calculated for 1:1 complex The best result for energetic and geometrical ground state was obtained with Becke3LYP calculations The Basis Set Superposition Error (BSSE) begins to converge for all methods/basis sets For this complex, most levels of theory seem to give reasonable estimates of the known binding energies, but here, too, the BSSE overwhelms the reliability of the binding energies for these basis sets
1 citations
28 Dec 2009
TL;DR: This paper aims to investigate and develop low cost adsorption methods for color removal wastewater using waste materials raw and activated carbon from plane tree yellow leaves as adsorbent.
Abstract: Textile effluents are major industrial polluters. The present paper aims to investigate and develop low cost adsorption methods for color removal wastewater using waste materials raw (RP) and activated carbon (ACP) from plane tree yellow leaves as adsorbent. The method was applied for the removal of Direct Red 81 while the influence of various factors such as adsorbate concentration and pH were studied. Using Langmuir, Freundlich and Temkin adsorption isotherm models the adsorption of the dye over both adsorbents were studied.
28 Dec 2009
TL;DR: The walnut shell, an agricultural waste, has been activated and used as an adsorbent for the adsorption of Direct and Reactive dyes from aqueous solution with respect to initial concentration and temperature.
Abstract: The walnut shell, an agricultural waste, has been activated and used as an adsorbent for the adsorption of Direct and Reactive dyes from aqueous solution Using a batch adsorption technique with respect to initial concentration and temperature the effects of various experimental parameters have been investigated Equilibrium isotherms were analyzed by Langmuir, Freundlich, Temkin and Dubinin-Radushkevich (D-R) models