Abstract
Development of scavengers to remove heavy metal ions and organic pollutants from wastewaters has been attempted by coupling Mg-Al layered double hydroxide (Mg-Al LDH) with organic acid anions having functional groups in their structure, such as edta and 2,6-naphthalene-di-sulfonate ion (2,6-NDS 2-). These organic-modified Mg-Al LDHs were synthesized by adding a solution of magnesium and aluminum nitrates to alkaline solution containing the organic acid anion. The solid product was confirmed to be Mg-Al LDH with Al/(Mg+Al) mole ratio of about 0.25 and to have intercalated organic acid anions in the inter-layers. The edta-intercalated Mg-Al LDH was found to remove rapidly Cd2+ from an aqueous solution. The 2,6-NDS-intercalated Mg-Al LDH could uptake organic pollutant exampled by bisphenol A. This organic sulfonate-modified Mg-Al LDH was regenerated by extraction of the uptaken bisphenol A with ethanol, and confirmed to have a high potentiality for the repeated use.
| Original language | English |
|---|---|
| Pages | 5-12 |
| Number of pages | 8 |
| Publication status | Published - 2005 |
| Event | 2005 TMS Annual Meeting - San Francisco, CA, United States Duration: 2005 Feb 13 → 2005 Feb 17 |
Other
| Other | 2005 TMS Annual Meeting |
|---|---|
| Country/Territory | United States |
| City | San Francisco, CA |
| Period | 05/2/13 → 05/2/17 |
Keywords
- Heavy metal ion
- Mg-Al layered double hydroxide
- Modify
- Organic acid anions
- Organic pollutant
- Uptake
ASJC Scopus subject areas
- Condensed Matter Physics
- Mechanics of Materials
- Metals and Alloys