Cu2+ sorption by C. demersum reached balance within 20min, the test results of sorption kinetics conformed to the pseudo second order kinetics equation, with its relativity coefficient reaching 0.9937, this sorption was a complicated process of simultaneous action of many reactions.

Cu2+ sorption by C. demersum reached balance within 20min, the test results of sorption kinetics conformed to the pseudo second order kinetics equation, with its relativity coefficient reaching 0.9937, this sorption was a complicated process of simultaneous action of many reactions.

The adsorption followed pseudo-second-order kinetics with a small energy of activation, which led to large kinetic rate constant and small time to reach adsorption equilibrium.

The adsorption kinetics of Reactive Brilliant Red K-2BP the sludge activated carbon accords with the two-step adsorption kinetics rate equation and pseudo-second-order kinetics equation.

The pseudo second order kinetic model was applied to describe the kinetic data and the rate constants were evaluated in the studied concentration range of Cu(II) ions at all the temperatures studied.

The pseudo second order kinetic constants were also used to calculate the activation energy of Cu(II) biosorption.

Kinetics of adsorption was found to follow pseudo second order rate equation with R2～ 0.99.

The alcohol produced at the early hydrolysis due to sonication seems to further enhance the reaction, via a parallel autocatalytic path, which is controlled by a faster pseudo second order rate constant (k').

A pseudo second order kinetic model fitted well for sorption of phosphorus onto the modified filter medium.

Cheap gradient calculation is obtained via sensitivity analysis and the solution of an adjoint equation; pseudo secondorder spatial accuracy is achieved by means of a semianalytical formulation.

A batch adsorption study was carried out to investigate the properties, kinetics and thermodynamics of adsorption process of CBs on CTMAB-bentonites. The adsorption followed pseudo-second-order kinetics with a small energy of activation, which led to large kinetic rate constant and small time to reach adsorption equilibrium. The experimental data yielded excellent fits with Linear isotherm equation, which was resulted from CBs partition into CTMAB-bentonites. With the increase of octanol-water partition coefficients...

A batch adsorption study was carried out to investigate the properties, kinetics and thermodynamics of adsorption process of CBs on CTMAB-bentonites. The adsorption followed pseudo-second-order kinetics with a small energy of activation, which led to large kinetic rate constant and small time to reach adsorption equilibrium. The experimental data yielded excellent fits with Linear isotherm equation, which was resulted from CBs partition into CTMAB-bentonites. With the increase of octanol-water partition coefficients of CBs and the organic carbon contents of CTMAB-bentonites, CBs distribution coefficients increased. The adsorption of CBs was exothermic in nature and was accompanied with an increase in entropy and a decrease in Gibbs energy in the temperature range of 288～308?K, which suggested that the adsorption behavior may be dominated by hydrophobic bonding and the spontaneous nature of the interaction without requiring large activation energies of adsorption.

The sorption kinetics and thermodynamics characters of submersed aquatic plant Ceratophyllum demersum for Cu2+ were studied. Cu2+ sorption by C. demersum reached balance within 20min, the test results of sorption kinetics conformed to the pseudo second order kinetics equation, with its relativity coefficient reaching 0.9937, this sorption was a complicated process of simultaneous action of many reactions. The test results of sorption thermodynamic that used Langmuir and Freundlich sorption isotherms for fittingness,...

The sorption kinetics and thermodynamics characters of submersed aquatic plant Ceratophyllum demersum for Cu2+ were studied. Cu2+ sorption by C. demersum reached balance within 20min, the test results of sorption kinetics conformed to the pseudo second order kinetics equation, with its relativity coefficient reaching 0.9937, this sorption was a complicated process of simultaneous action of many reactions. The test results of sorption thermodynamic that used Langmuir and Freundlich sorption isotherms for fittingness, resulted that Langmuir model fitting effect was better, with its relativity coefficient of 0.9977, and maximum sorption quantity of 7.79mg/g. In the desorption test, the desorption rates of each concentration group were all below 1%, indicating stronger sorption-holding action of C. demersum on Cu2+.

The sorption kinetic of 1,2,4-trichlorobenzene from aqueous solution onto CTMAB-bentonite was studied.The sorption experiments were conducted in an agitated batch reactor at various initial 1,2,4-trichlorobenzene concentrations,CTMAB-bentonite dose,solution temperature and the amount of CTMAB during modification.The results show that all sorption processes followed pseudo-second-order kinetics equation.The sorption rate of 1,2,4-trichlorobenzene onto CTMAB-bentonite increased respectively with the increase of...

The sorption kinetic of 1,2,4-trichlorobenzene from aqueous solution onto CTMAB-bentonite was studied.The sorption experiments were conducted in an agitated batch reactor at various initial 1,2,4-trichlorobenzene concentrations,CTMAB-bentonite dose,solution temperature and the amount of CTMAB during modification.The results show that all sorption processes followed pseudo-second-order kinetics equation.The sorption rate of 1,2,4-trichlorobenzene onto CTMAB-bentonite increased respectively with the increase of temperature,the amount of CTMAB during modification,CTMAB-bentonite dose and the decrease of initial 1,2,4-trichlorobenzene concentrations.