Affordable Access

Publisher Website

Sorption of naphthalene and phosphate to the CTMAB–Al13intercalated bentonites

Journal of Hazardous Materials
Publication Date
DOI: 10.1016/j.jhazmat.2009.03.057
  • Inorganic–Organic Bentonites
  • Sorption
  • Phosphate
  • Hydrophobic Organic Compounds
  • Wastewater


Abstract This work aimed to develop novel bentonite based sorbents that could simultaneously remove hydrophobic organic compounds (HOCs) and phosphate from water. Cetyltrimethyl ammonium bromide (CTMAB) and hydroxy-aluminum (Al 13) were used to intercalate bentonite simultaneously or sequentially to prepare series of inorganic–organic bentonites (IOBs). Structures of the prepared IOBs were characterized, and their sorptive characteristics towards naphthalene and phosphate were investigated. Results showed that both CTMAB and Al 13 could intercalate into bentonite's interlayers if they were simultaneously used or if CTMAB was first used for the intercalation. The resulting IOBs were as effective as the CTMAB modified bentonites in sorption of naphthalene from water, and they were shown to be more effective in sorption of phosphate from water than the Al 13 pillared bentonite. However, if Al 13 was first used for the intercalation, the interlayers of the bentonites would be “locked” by the intercalated Al 13, and thus CTMAB could hardly further intercalate bentonite. As a result, the obtained IOBs showed weak sorption efficiency towards naphthalene, and its sorption capacity towards phosphate was also lower than the corresponding Al 13 pillared bentonites. Results of this work showed that IOBs prepared with proper processes could be efficient sorbents towards both HOCs and phosphate.

There are no comments yet on this publication. Be the first to share your thoughts.


Seen <100 times

More articles like this

[Simultaneous sorption of aqueous phenanthrene and...

on Huan jing ke xue= Huanjing kex... January 2006

Intercalation of both CTMAB and Al13into montmoril...

on Journal of Colloid and Interfa... Jan 01, 2009

[Enhanced sorption of naphthalene into bentonites...

on Huan jing ke xue= Huanjing kex... March 2003

Influence of pH on the aluminum speciation in free...

on Applied Clay Science Jan 01, 2006
More articles like this..