TY - JOUR
T1 - Sorption characteristics of lead cations on microporous organo-birnessite
AU - Lee, Chae Young
AU - Kim, Taesung
AU - Komarneni, Sridhar
AU - Han, Sun Kee
AU - Cho, Yunchul
N1 - Funding Information:
This research was supported by the Korea Ministry of Environment as ‘The 2012 GAIA project (No. G111-17003-0043-0 )’. This article has not been reviewed by these agencies, and no official endorsement should be inferred.
PY - 2013/10
Y1 - 2013/10
N2 - The aim of this study was to examine the adsorption characteristics of cationic surfactant modified-birnessite for removal of Pb. For this purpose, Na-birnessite and tetramethylammonium (TMA) cation were used as an inorganic host and cationic surfactant, respectively. Na-birnessite was synthesized by the oxidation of Mn2+ under alkaline condition, and TMA cation was intercalated in the interlayer of H-birnessite prepared from Na-birnessite.Batch isotherm tests were carried out to investigate the adsorption capacity of the TMA-birnessite for Pb. The characterization of all synthetic birnessites was carried out with powder X-ray diffraction (XRD), energy-dispersive X-ray spectroscopy (EDS), transmission electron microscopy (TEM), and Brunauer-Emmett-Teller (BET) specific surface area measurements. Also, Fourier transform infrared spectroscopy (FT-IR) was used to investigate sorption behavior of Pb onto TMA-birnessite. TMA-birnessite was found to have higher adsorption ability for Pb than synthetic Na-birnessite and commercial granular activated carbon (GAC). This result suggests that the synthetic organo-birnessites could be effective sorbents for removal of heavy metals from groundwater.
AB - The aim of this study was to examine the adsorption characteristics of cationic surfactant modified-birnessite for removal of Pb. For this purpose, Na-birnessite and tetramethylammonium (TMA) cation were used as an inorganic host and cationic surfactant, respectively. Na-birnessite was synthesized by the oxidation of Mn2+ under alkaline condition, and TMA cation was intercalated in the interlayer of H-birnessite prepared from Na-birnessite.Batch isotherm tests were carried out to investigate the adsorption capacity of the TMA-birnessite for Pb. The characterization of all synthetic birnessites was carried out with powder X-ray diffraction (XRD), energy-dispersive X-ray spectroscopy (EDS), transmission electron microscopy (TEM), and Brunauer-Emmett-Teller (BET) specific surface area measurements. Also, Fourier transform infrared spectroscopy (FT-IR) was used to investigate sorption behavior of Pb onto TMA-birnessite. TMA-birnessite was found to have higher adsorption ability for Pb than synthetic Na-birnessite and commercial granular activated carbon (GAC). This result suggests that the synthetic organo-birnessites could be effective sorbents for removal of heavy metals from groundwater.
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U2 - 10.1016/j.clay.2013.08.035
DO - 10.1016/j.clay.2013.08.035
M3 - Article
AN - SCOPUS:84885026909
SN - 0169-1317
VL - 83-84
SP - 263
EP - 269
JO - Applied Clay Science
JF - Applied Clay Science
ER -