TY - JOUR
T1 - Removal of heavy metals from aqueous phases using chemically modified waste Lyocell fiber
AU - Bediako, John Kwame
AU - Wei, Wei
AU - Kim, Sok
AU - Yun, Yeoung Sang
N1 - Publisher Copyright:
© 2015 Elsevier B.V.
PY - 2015/12/5
Y1 - 2015/12/5
N2 - 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.
AB - 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.
KW - Cellulose xanthation
KW - Characterization
KW - Complexation
KW - Heavy metal
KW - Ion exchange
KW - Precipitation
UR - http://www.scopus.com/inward/record.url?scp=84938718254&partnerID=8YFLogxK
U2 - 10.1016/j.jhazmat.2015.07.033
DO - 10.1016/j.jhazmat.2015.07.033
M3 - Article
AN - SCOPUS:84938718254
SN - 0304-3894
VL - 299
SP - 550
EP - 561
JO - Journal of Hazardous Materials
JF - Journal of Hazardous Materials
ER -