Abstract
Dodecylsulfate ion (DS-)-intercalated Mg-Al layered double hydroxide (DS·Mg-Al LDH) particles packed in a column has been investigated to continuously treat bisphenol A and diethyl phthalate solutions. The effluents obtained by passing bisphenol A and diethyl phthalate solutions through the column are constantly measured by using a photomultiplier detector in order to analyze residual bisphenol A and diethyl phthalate. During the flow of bisphenol A and diethyl phthalate solutions, no absorbance was detected in the effluents for a certain amount of time. This suggests that bisphenol A and diethyl phthalate were continuously taken up by the DS-Mg-Al LDH particles in the column due to the hydrophobic interactions with intercalated DS- until the shortage of its accommodation in the interlayer of the LDH. DS - was rigidly fixed in the interlayers of DS-Mg-Al LDH during the flow of bisphenol A and diethyl phthalate solutions. Furthermore, the cycle of the uptake of bisphenol A from an aqueous solution and the elution of taken-up bisphenol A by ethanol was repeated by the alternately passing bisphenol A solution and ethanol through the column until the column ruptured by the swelling of the DS-Mg-Al LDH particles.
Original language | English |
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Pages (from-to) | 1541-1547 |
Number of pages | 7 |
Journal | Materials Transactions |
Volume | 50 |
Issue number | 6 |
DOIs | |
Publication status | Published - 2009 Jun |
Keywords
- Bisphenol A
- Column-type operation
- Diethyl phthalate
- Dodecylsulfate
- Mg-Al layered double hydroxide
- Modification
ASJC Scopus subject areas
- Materials Science(all)
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering