Results 171 to 180 of about 980,324 (197)
Some of the next articles are maybe not open access.
Adsorption kinetics models in clay systems. The critical analysis of pseudo-second order mechanism
Applied Clay Science, 2020Abstract The research topics involving adsorption kinetics of chemical substances on clays and related materials include hundreds of papers over the last decades. In many of them, it is concluded that the adsorption is governed by the so-called pseudo-second order (PSO) mechanism.
openaire +1 more source
Pseudo-Second-Order Kinetics for the Adsorption of Uranyl Ion onto Peat at Different pH Value
Advanced Materials Research, 2010Batch tests were used to investigate the effects of pH and contact time on the adsorption capability of peat. The results indicate that adsorption of uranyl ions on peat increase with increasing pH from 1 to 5. However it takes longer contact time to reach the adsorption equilibrium with increase of pH from 1 to 5.
Zhi Rong Liu, Qin Qin Tao, Chuan Xi Wen
openaire +1 more source
Pseudo-Isotherms Using a Second Order Kinetic Expression Constant [PDF]
Adsorption, 2004 . The kinetics of four sorption systems, Cu/tree fern, Pb/tree fern, AB9/activated clay and BR18/activated clay have been studied based on the assumption of a pseudo-second order rate law. Pseudo-isotherms using the pseudo-second order kinetic expression
Yuh-Shan Ho, Ho Yuh-Shan
exaly +1 more source
Chemical Engineering Journal, 2020
Abstract The kinetics of adsorption for Langmuir and Freundlich isotherms has been explored theoretically on the basis of Statistical Rate Theory (SRT). The Modified Pseudo-First-Order (MPFO) and Pseudo-First-Order (PFO) models were derived from Freundlich isotherm on the basis of Statistical Rate Theory at c 0 ≫ c e and at close to ...
openaire +1 more source
Abstract The kinetics of adsorption for Langmuir and Freundlich isotherms has been explored theoretically on the basis of Statistical Rate Theory (SRT). The Modified Pseudo-First-Order (MPFO) and Pseudo-First-Order (PFO) models were derived from Freundlich isotherm on the basis of Statistical Rate Theory at c 0 ≫ c e and at close to ...
openaire +1 more source
Inorganica Chimica Acta, 1997
Abstract Pseudo second-order Jahn-Teller distortions are proposed to explain why the equatorial hydride ligands in a series of cyclopentadienyl metal polyhydrides (Cp ∗ ReH 6 , Cp ∗ OsH 5 , Cp ∗ IrH 4 ) bend away from the Cp ring at such large angles. Restricted Hartree-Fuck (RHF) geometry optimizations on models of these complexes where the Cp* ring
Craig A. Bayse, Michael B. Hall
openaire +1 more source
Abstract Pseudo second-order Jahn-Teller distortions are proposed to explain why the equatorial hydride ligands in a series of cyclopentadienyl metal polyhydrides (Cp ∗ ReH 6 , Cp ∗ OsH 5 , Cp ∗ IrH 4 ) bend away from the Cp ring at such large angles. Restricted Hartree-Fuck (RHF) geometry optimizations on models of these complexes where the Cp* ring
Craig A. Bayse, Michael B. Hall
openaire +1 more source
Industrial & Engineering Chemistry Research, 2018
In this research note, we revisit the pseudo-second-order model for adsorption kinetics, its assumptions, and its application to simulated, random, and published data.
Ye Xiao, Jalel Azaiez, Josephine M. Hill
openaire +1 more source
In this research note, we revisit the pseudo-second-order model for adsorption kinetics, its assumptions, and its application to simulated, random, and published data.
Ye Xiao, Jalel Azaiez, Josephine M. Hill
openaire +1 more source
2008 2nd International Conference on Bioinformatics and Biomedical Engineering, 2008
A comparison was made of the linear least-squares method and a nonlinear least-square method of the Langmuir isotherm and pseudo second order kinetic model for the biosorption of methylene blue onto rice husk. The parameters obtained from the linear method and the nonlinear method were different. The error analysis was performed.
Runping Han +6 more
openaire +1 more source
A comparison was made of the linear least-squares method and a nonlinear least-square method of the Langmuir isotherm and pseudo second order kinetic model for the biosorption of methylene blue onto rice husk. The parameters obtained from the linear method and the nonlinear method were different. The error analysis was performed.
Runping Han +6 more
openaire +1 more source
World Journal of Microbiology and Biotechnology, 2009
The removal of hexavalent chromium from aqueous solution was studied in batch experiments using dead biomass of three different species of marine Aspergillus after alkali treatment. All the cultures exhibited potential to remove Cr(VI), out of which, Aspergillus niger was found to be the most promising one.
Yasmin Khambhaty +3 more
openaire +1 more source
The removal of hexavalent chromium from aqueous solution was studied in batch experiments using dead biomass of three different species of marine Aspergillus after alkali treatment. All the cultures exhibited potential to remove Cr(VI), out of which, Aspergillus niger was found to be the most promising one.
Yasmin Khambhaty +3 more
openaire +1 more source
Sorption kinetics: Obtaining a pseudo-second order rate equation based on a mass balance approach
Journal of Environmental Chemical Engineering, 2014Abstract Various formulations of pseudo second-order rate equations have been widely used in elucidating the rate constants of a wide variety of sorption systems. In this paper, it is shown that a new formulation can be obtained by making use of the mass balance equation of a single stage batch-type system.
openaire +1 more source