330 0

Adsorption characteristics of mesoporous silica SBA-15 synthesized from mine tailing

Title
Adsorption characteristics of mesoporous silica SBA-15 synthesized from mine tailing
Author
박재구
Keywords
Mine tailings; Mesoporous silica; Functional groups; Adsorption
Issue Date
2015-05
Publisher
ELSEVIER SCIENCE BV
Citation
INTERNATIONAL JOURNAL OF MINERAL PROCESSING, v. 140, Page. 88-94
Abstract
Mesoporous silica SBA-15 was successfully synthesized using the silicate solution extracted from mine tailings. The synthesized SBA15 was functionalized with 3-mercaptopropyl-trimethoxysilane, which was characterized by nitrogen adsorption-desorption analysis, Fourier transform infrared spectroscopy, element analysis, and transmission electron microscopy. The properties of the synthesized mesoporous materials were compared with those prepared from silica precursor tetraethyl-orthosilicate. The functionalized SBA-15 was tested as adsorbents to remove metal ions from aqueous solution. The highest adsorption capacities were found to be 33.25 mg/g of Cu(II), 20.98 mg/g of Cd(II) and 35.04 mg/g of Pb(II) for the functionalized SBA-15 synthesized from mine tailings. The results of adsorption of the functionalized adsorbents were successfully fitted to the Langmuir adsorption isotherm and pseudo-second order kinetics model (R-2˃0.99). (C) 2015 Elsevier B.V. All rights reserved.
URI
http://www.sciencedirect.com/science/article/pii/S0301751615001106http://hdl.handle.net/20.500.11754/24901
ISSN
0301-7516; 1879-3525
DOI
10.1016/j.minpro.2015.04.027
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > EARTH RESOURCES AND ENVIRONMENTAL ENGINEERING(자원환경공학과) > Articles
Files in This Item:
There are no files associated with this item.
Export
RIS (EndNote)
XLS (Excel)
XML


qrcode

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE