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Citation: ZHENG Yi-An, WANG Ai-Qin. Adsorption of Pb²⁺ onto Poly(acrylic acid-co-acrylamide)/Montmorillonite/Sodium Humate Composite[J]. Chinese Journal of Applied Chemistry, ;2009, 26(10): 1154-1158. shu

Adsorption of Pb²⁺ onto Poly(acrylic acid-co-acrylamide)/Montmorillonite/Sodium Humate Composite

ZHENG Yi-An ,
WANG Ai-Qin ^,

1.
Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000

Corresponding author: WANG Ai-Qin,
Received Date: 26 October 2008
Available Online: 19 January 2009
Fund Project: 江苏省科技厅太湖专项(BS2007118) (BS2007118)甘肃省科技支撑(0804GKCA03A)资助项目 (0804GKCA03A)

A composite adsorbent based on acrylic acid,acrylamide,montmorillonite and sodium humate was prepared,and the effects of pH value,contact time,and initial Pb²⁺ concentration on removing Pb²⁺ from the aqueous solution by the composite adsorbent were evaluated. The adsorption mechanism of Pb²⁺ onto the as-prepared adsorbent was discussed. Under the conditions of pH=6.00,contact time of 2 h,an initial Pb²⁺ concentration of 0.01 mol/L and an amount of adsorbent of 0.10 g,the adsorption capacity of the as-prepared adsorbent for Pb²⁺ was found to be 364.05 mg/g and the adsorption system reached equilibrium within 15 min. Compared with Ca-montmorillonite and other adsorbents reported,the as-prepared composite adsorbent has a higher adsorption capacity and a faster adsorption rate.
- composite adsorbent,
- montmorillonite,
- lead,
- adsorption capacity,
- adsorption mechanism
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Adsorption of Pb²⁺ onto Poly(acrylic acid-co-acrylamide)/Montmorillonite/Sodium Humate Composite