A novel approach to developing a reusable marine macro-algae adsorbent with chitosan and ferric oxide for simultaneous efficient heavy metal removal and easy magnetic separation

Eun Bi Son, Kyung Min Poo, Hend Omar Mohamed, Yun Jeong Choi, Wan Cheol Cho, Kyu Jung Chae*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

86 Scopus citations

Abstract

Chitosan modified magnetic kelp biochar (Chi-KBm) was successfully synthesized for efficient removal of heavy metals (Cu2+) from wastewater. Interestingly, the characterization results indicated that Chi-KBm showed 6 times higher surface area (6.17 m2/g) than the pristine magnetic kelp biochar KBm (0.97 m2/g). In addition, new functional groups, such as NH and C–N group, have been created on the surface of biochar as a result of chitosan modification process, which in turns led to improve the Cu2+ adsorption capacity. The effect of pH and chitosan loading on heavy metal adsorption, and competition reaction of different metal ions adsorption were also investigated. Chi-KBm exhibited a separation efficiency of more than 99.8%, which allows to recovery and reusability of the adsorbent material and heavy metals simultaneously. Overall, this study highlighted the Chi-KBm is a promise adsorbent for heavy metal removal without sacrificing of the separation ability using magnetism.

Original languageEnglish (US)
Pages (from-to)381-387
Number of pages7
JournalBioresource technology
Volume259
DOIs
StatePublished - Jul 2018

Keywords

  • Chitosan
  • Magnetic separation
  • Marine macro-algae biochar
  • Metal adsorption
  • Reusability

ASJC Scopus subject areas

  • Bioengineering
  • Environmental Engineering
  • Renewable Energy, Sustainability and the Environment
  • Waste Management and Disposal

Fingerprint

Dive into the research topics of 'A novel approach to developing a reusable marine macro-algae adsorbent with chitosan and ferric oxide for simultaneous efficient heavy metal removal and easy magnetic separation'. Together they form a unique fingerprint.

Cite this