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Adsorption of a few heavy metals on natural and modified kaolinite and montmorillonite: a review.
The feasibility of using two important and common clay minerals, kaolinite and montmorillonite, as adsorbents for removal of toxic heavy metals has been reviewed. A good number of works have beenExpand
Kinetics of adsorption of metal ions on inorganic materials: A review.
An attempt has been made to discuss the kinetics of adsorption of metal ions on inorganic solids on the basis of published reports, and the values of the kinetic rate coefficients indicate the speed at which the metal ions adsorb on the materials. Expand
Immobilization of Pb(II), Cd(II) and Ni(II) ions on kaolinite and montmorillonite surfaces from aqueous medium.
The results have established good potentiality for kaolinite and montmorillonite to remove heavy metals like Pb(II), Cd(II) and Ni( II) from aqueous medium through adsorption-mediated immobilization. Expand
Kinetics and thermodynamics of Methylene Blue adsorption on Neem (Azadirachta indica) leaf powder
Abstract The dye, Methylene Blue, was adsorbed on an adsorbent prepared from mature leaves of the Neem tree (Azadirachta indica). A batch adsorption study was carried out with variable adsorbateExpand
Adsorption of Ni(II) on clays.
The present work investigates the adsorptive interactions of Ni(II) ions with kaolinite, montmorillonite, and their poly(oxo zirconium) and tetrabutylammonium derivatives in aqueous medium. BatchExpand
Abstract Methylene blue was adsorbed on kaolin from a local deposit. The raw kaolin itself was a relatively good adsorbent. The adsorption capacity was improved by purification and by treatment withExpand
Adsorption of Pb(II) from aqueous solution by Azadirachta indica (Neem) leaf powder.
An adsorbent was developed from the mature leaves of the Neem tree for removing Pb(II) from water and the computation of the parameters, DeltaH, DeltaS and DeltaG, indicated the interactions to be thermodynamically favourable. Expand
Kaolinite, montmorillonite, and their modified derivatives as adsorbents for removal of Cu(II) from aqueous solution
Abstract Adsorption of metals by clay minerals is a complex process controlled by a number of environmental variables. The present work investigates the removal of Cu(II) ions from an aqueousExpand
Azadirachta indica leaf powder as an effective biosorbent for dyes: a case study with aqueous Congo Red solutions.
The results point to the effectiveness of the Neem leaf powder as a biosorbent for removing dyes like Congo Red from water. Expand
Influence of acid activation on adsorption of Ni(II) and Cu(II) on kaolinite and montmorillonite: Kinetic and thermodynamic study
Abstract The removal of Ni(II) and Cu(II) with clays (kaolinite, montmorillonite and their acid-activated forms) in aqueous medium have been studied. Batch adsorption experiments were carried out byExpand