Effect of Co-ions on Cadmium Sorption Kinetics from Aqueous Solutions by Dried Activated Sludge
نویسنده
چکیده
The effect of ions presence such as: Na, K, Ca, Cl, SO4 and CO3, at various initial concentrations, on the kinetics of cadmium sorption by dried activated sludge was studied at 25°C and free initial pH solution in batch conditions. The presence of these ions in solution was found to inhibit slightly the uptake of cadmium by dried activated sludge at different degrees: sodium, potassium, calcium and chloride ions have no significant effect. For SO4 and CO3 ions, the effects ranged from an inhibition of cadmium by CO3 to a weak inhibition by SO4. No ion was found to enhance cadmium uptake level. The results also showed that the kinetics of sorption were described by a pseudo-second order rate model.
منابع مشابه
Removal of Cadmium Ions from Aqueous Solutions by Two Low-cost Materials
This study compared the abilities of two low-cost materials: a dried activated sludge and sunflower leaves to remove cadmium from aqueous solutions. Kinetic data and equilibrium sorption isotherms were measured in batch conditions. Kinetics of cadmium sorption was time contact and initial cadmium concentration dependent. The cadmium uptake of these two low-cost materials was quantitatively eval...
متن کاملEffect of Cations and Anions Presence on Cadmium Sorption Kinetics from Aqueous Solutions by Dried Sunflower Leaves
The effect of ions presence such as: Na + , K + , Ca 2+ , Cl , SO4 2and CO3 2, at various initial concentrations, on the kinetics of cadmium sorption by dried sunflower leaves was studied at 25°C in batch conditions. The presence of these ions in solution was found to inhibit the uptake of cadmium by dried sunflower leaves at different degrees. Na + and K + ions have no significant effect. For ...
متن کاملApplication of Response Surface Methodology and Artificial Neural Network for Analysis of p-chlorophenol Biosorption by Dried Activated Sludge
Phenolic compounds are considered as priority pollutants because of their high toxicity at low concentration. In the present study, the sorption of p-chlorophenol (p-CP) by dried activated sludge was investigated. Activated sludge was collected as slurry from the sludge return line of a municipal wastewater treatment plant. Sorption experiments were carried out in batch mode. In order to invest...
متن کاملRemoval of Copper Ions from Aqueous Solutions by Dried Activated Sludge
In the present work, the usefulness of dried activated sludge has been investigated for the removal of copper ions from aqueous solutions. Kinetic data and equilibrium sorption isotherms were measured in batch conditions. The influence of initial pH, metal concentration and copper salt nature on the metal removal kinetics has been studied. Copper uptake was time contact, initial copper concentr...
متن کاملNickel (II) Adsorption from Aqueous Solutions by Physico-Chemically Modified Sewage Sludge
This study assesses teh potential of activated carbon prepared from sewage sludge for nickel ions adsorption from aqueous solutions. Activated carbon physicochemical properties were determined. Batch adsorption experiments were performed as a function of pH solution, adsorbent dose, initial metal ions concentration, contact time and temperature. Teh experimental data were analyzed by teh La...
متن کامل