Removal of heavy metals from aqueous phases using chemically modified waste Lyocell fiber

John Kwame Bediako, Wei Wei, Sok Kim, Yeoung Sang Yun

Research output: Contribution to journalArticlepeer-review

97 Citations (Scopus)

Abstract

In this study, an outstanding performance of chemically modified waste Lyocell for heavy metals treatment is reported. The sorbent, which was prepared by a simple and concise method, was able to bind heavy metals such as Pb(II), Cu(II) and Cd(II), with very high efficiencies. The binding mechanisms were studied through adsorption and standard characterization tests such as scanning electron microscopy, energy-dispersive spectroscopy, Fourier transform infrared spectroscopy, and X-ray diffraction analyses. Adsorption kinetics was very fast and attained equilibrium within 5. min in all metals studied. The maximum single metal uptakes were 531.29. ±. 0.28. mg/g, 505.64. ±. 0.21. mg/g, and 123.08. ±. 0.26. mg/g for Pb(II), Cd(II) and Cu(II), respectively. In ternary metal systems, Cu(II) selectivity was observed and the underlying factors were discussed. The sorbent by its nature, could be very effective in treating large volumes of wastewater with the contact of very little amount.

Original languageEnglish
Pages (from-to)550-561
Number of pages12
JournalJournal of Hazardous Materials
Volume299
DOIs
Publication statusPublished - 5 Dec 2015
Externally publishedYes

Keywords

  • Cellulose xanthation
  • Characterization
  • Complexation
  • Heavy metal
  • Ion exchange
  • Precipitation

Fingerprint

Dive into the research topics of 'Removal of heavy metals from aqueous phases using chemically modified waste Lyocell fiber'. Together they form a unique fingerprint.

Cite this