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- Title
Removal of Cu from the aqueous solution by tartrate-intercalated layered double hydroxide.
- Authors
Shen, Yanming; Zhao, Xiaolei; Zhang, Xi; Li, Shifeng; Liu, Dongbin; Fan, Lihui
- Abstract
The tartrate-intercalated MgAl layered double hydroxide (MgAl-TA LDH) was prepared by ion-exchange method at the acid solution using MgAl-CO3LDH as the precursor. The adsorption of Cu2+on MgAl-TA LDH was studied and some influence factors such as contact time, initial Cu2+concentration, adsorbent dosage, solution pH, and adsorption temperature were investigated. Three kinds of adsorption isotherms (Langmuir model, Freundlich model, and Redlich–Peterson model) were investigated; the results indicated that equilibrium was well described by Langmuir isotherm, predicting the adsorption of Cu2+on MgAl-TA adsorbents was a monolayer adsorption. The equilibrium kinetic adsorption data were fitted to the pseudo-second order kinetic equation. Furthermore, the adsorption of Cu2+was controlled mainly by chemical process combined with intra-particle diffusion. Parameters of adsorption thermodynamic suggested that the interaction of Cu2+adsorbed by MgAl-TA LDH adsorbents was spontaneous and endothermic.
- Subjects
WATER purification; COPPER content of water; LAYERED double hydroxides; TARTRATES; ADSORPTION (Chemistry); THERMODYNAMICS
- Publication
Desalination & Water Treatment, 2016, Vol 57, Issue 5, p2064
- ISSN
1944-3994
- Publication type
Article
- DOI
10.1080/19443994.2014.981866