Adsorption Characteristics of Uranyl Ions on Carboxymethylated Polyethyleneimine (CM-PEI) / Activated Carbon Composites

Ke Chon Choi; Yongju Jung; Seok Kim; Soo Jin Park; Hyung Ik Lee; Ji Man Kim

doi:10.4028/www.scientific.net/SSP.124-126.1257

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Adsorption Characteristics of Uranyl Ions on Carboxymethylated Polyethyleneimine (CM-PEI) / Activated Carbon Composites

Abstract:

We present the adsorption characteristics of uranyl ions on a new and innovative composite which was composed of a carboxymethylated polyethyleneimine (CM-PEI) and an activated carbon (F400) with a nanopore less than 2 nm in diameter. In this study, we examined the adsorption phenomena of uranyl ions on the CM-PEI/F400 composite and evaluated the adsorption data using various isotherm models. It was found that the adsorption of uranyl ions on the CM-PEI/F400 composite obeys the Langmuir isotherm model. In addition, it was observed that pH of solutions had great influence on the adsorption capacity of uranyl ions on the CM-PEI/F400 composite. Specially, the adsorption capacity of uranyl ions was linearly increased with an increase of pH at pH > 3.0.

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Periodical:

Solid State Phenomena (Volumes 124-126)

Pages:

1257-1260

DOI:

https://doi.org/10.4028/www.scientific.net/SSP.124-126.1257

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Online since:

June 2007

Authors:

Ke Chon Choi, Yongju Jung, Seok Kim, Soo Jin Park, Hyung Ik Lee, Ji Man Kim

Keywords:

Activated Carbon (AC), Adsorption Isotherm, Carboxymethylated Polyetyleneimine, Nanopore, Uranyl Ions

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