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Preparation of Acid-Activated Montmorillonite and Its Application
The natural Na-type montmorillonite (Na-MMT) was treated with HNO3 to obtain acid-activated montmorillonite (acid-MMT). The materials were characterized by XRD, XRF, SEM, and N2 adsorption–desorption at low temperature. Results indicated that the structure and textural properties of MMT were significantly changed via acid activation. Meanwhile, the potential use of acid-MMT as adsorbent for the removal of phenol from aqueous solution was evaluated. Important parameters which affected adsorption, such as contact time, pH of solution, and mass of acid-MMT had been investigated. The removal of phenol was decreased with the increase of pH value, and increased with the increase of contact time and mass of acid-MMT. The equilibrium data in aqueous solutions were well represented by the Freundlich isotherm.
Preparation of Acid-Activated Montmorillonite and Its Application
The natural Na-type montmorillonite (Na-MMT) was treated with HNO3 to obtain acid-activated montmorillonite (acid-MMT). The materials were characterized by XRD, XRF, SEM, and N2 adsorption–desorption at low temperature. Results indicated that the structure and textural properties of MMT were significantly changed via acid activation. Meanwhile, the potential use of acid-MMT as adsorbent for the removal of phenol from aqueous solution was evaluated. Important parameters which affected adsorption, such as contact time, pH of solution, and mass of acid-MMT had been investigated. The removal of phenol was decreased with the increase of pH value, and increased with the increase of contact time and mass of acid-MMT. The equilibrium data in aqueous solutions were well represented by the Freundlich isotherm.
Preparation of Acid-Activated Montmorillonite and Its Application
Zhao, Yong-Hua (author) / Ma, Fei (author) / Tang, Ke (author)
Marine Georesources & Geotechnology ; 34 ; 741-746
2016-11-16
6 pages
Article (Journal)
Electronic Resource
English
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