Removal of benzene using the characteristics of block copolymers for encapsulation

Jae Woo Choi, Seung Gun Chung, Kyung Youl Baek, Kie Yong Cho, Seok Won Hong, Dong Ju Kim, Sang Hyup Lee

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)


This study assessed the aqueous benzene removal capacity of a polymeric adsorbent, based on an amphiphilic material, in a batch experiment. Two types of polystyrene-block-poly(N-isopropylacrylamide) have structures containing a hydrophobic core and hydrophilic shell. The encapsulation mechanism of benzene by a polymeric adsorbent was investigated, and found to be attributable to the Van der Waals interactions between the benzene aromatic ring and the hydrophobic core of the adsorbent. The equilibrium data were analyzed using the Langmuir and Freundlich adsorption isotherms, and found to be a good fit to both. The maximum adsorption capacity for benzene by the polymeric adsorbent was found to be 194.53 mg/g. The kinetic data followed a pseudo-first-order kinetic model. Polystyrene-block-poly(N-isopropylacrylamide) showed the potential to be an effective adsorbent for application to wastewater treatment.

Original languageEnglish
Pages (from-to)609-616
Number of pages8
JournalWater, Air, and Soil Pollution
Issue number2
Publication statusPublished - 2012 Feb

Bibliographical note

Funding Information:
Acknowledgment The authors acknowledge that this research was funded by project No. 022-081-044 from the Next-generation Core Environmental Technology Development Project of the Ministry of the Environment in Korea.


  • Amphiphilic
  • Benzene
  • Block copolymer
  • Encapsulation

ASJC Scopus subject areas

  • Environmental Engineering
  • Environmental Chemistry
  • Ecological Modelling
  • Water Science and Technology
  • Pollution


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