Adsorption and Deposition of Cu (II) on Modified Valonia Tannin

Yi Li; Xue Gang Luo; Zhao Liu; Yan Huang; Xiao Yan Long

doi:10.4028/www.scientific.net/MSF.620-622.555

Paper Titles

Preparation of Chitosan Grafting Acrylic Acid Supported Palladium Fibrous Catalyst and its Application in Hydrogenation
p.537

Synthesis and Luminescent Properties of Porous YVO₄:Sm Nanoplates
p.541

Effect of Surface Nanocrystallization Method on Fatigue Strength of TA2
p.545

Fabrication of Nano-MgO Reinforced Fe-Cr-Ni Composites by Reactive Hot Pressing
p.551

Adsorption and Deposition of Cu (II) on Modified Valonia Tannin
p.555

Applied Study of Fibre Padding and Ceramic in Micro-Polluted Water Treatment
p.559

In Vitro Cytocompatibility of Plasma-Sprayed Dicalcium Silicate/Zirconia Composite Coating
p.563

In Vitro Cytocompatibility of Silver-Containing Hydroxyapatite Coatings
p.567

Extraction of Lignin from Pulping Black Liquor by Organic Acid
p.571

HomeMaterials Science ForumMaterials Science Forum Vols. 620-622Adsorption and Deposition of Cu (II) on Modified...

Adsorption and Deposition of Cu (II) on Modified Valonia Tannin

Abstract:

The modified valonian tannin was prepared through sulfonated-mannich reaction and used to adsorb Cu (II) from the aqueous solutions. The adsorption capacity rapidly reached equilibrium within 2 hours. The effect of pH on adsorption was apparent, the amount of adsorption increased significantly as the pH increased from 2.0 to 4.0 and then leveled off at pH 4.0-6.0. Equilibrium data fitted well with Freundlich isotherm model compared to Langmuir isotherm model, indicating that adsorption takes place on heterogeneous surface of the modified valonia tannin. The adsorption capacity was increased by increasing initial concentrations. The maximum adsorption capacity of cooper ion was determined to be 56.200 mg/g at 100 mg/L concentration.