Cadmium adsorption characteristic of cellulose-gel manufacture using Alkali solvent

Kyo Jung Hwang, Gu Joong Kwon, Ji Wook Yang, Won Jung Hwang, Jae Hyun Hwang, Dae Young Kim

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

This study was carried out to investigate the characterization of cadmium adsorption by cellulose hydrogel and aerogel. Hydrogel and aerogel were made from ashless pulp dissolved in alkali hydroxide-urea aqueous solution and manufactured in film and bead types. After regeneration of cellulose, hydrogel went through the process of substitution of organic solvent and freeze-dry in order to make aerogel. SEM was used to analyze the microstructure of hydrogel and aerogel. Experiment was conducted in various concentrations and pH conditions to find out the characteristic of cadmium adsorption. After that, EDS was used to identify existence and distribution of cadmium in hydrogel and aerogel. The result from comparisons of cadmium adsorption shows that bead type aerogel has the maximum cadmium adsorption and film type hydrogel has the minimum cadmium adsorption.

Original languageEnglish
Pages (from-to)113-122
Number of pages10
JournalPalpu Chongi Gisul/Journal of Korea Technical Association of the Pulp and Paper Industry
Volume47
Issue number6
DOIs
StatePublished - Dec 2015

Keywords

  • Aerogel
  • Alkali hydroxide-urea solution
  • Cadmium adsorption
  • Cellulose
  • Hydrogel

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