Organic/inorganic hybrid filters based on dendritic and cyclodextrin "nanosponges" for the removal of organic pollutants from water

Environ Sci Technol. 2006 Apr 15;40(8):2771-7. doi: 10.1021/es052290v.

Abstract

Long-alkyl chain functionalized poly(propylene imine) dendrimer, poly(ethylene imine) hyperbranched polymer, and beta-cyclodextrin derivatives, which are completely insoluble in water, have the property of encapsulating organic pollutants from water. Ceramic porous filters can be impregnated with these compounds resulting in hybrid organic/ inorganic filter modules. These hybrid filter modules were tested for the effective purification of water, by continuous filtration experiments, employing a variety of water pollutants. It has been established that polycyclic aromatic hydrocarbons (PAHs) can be removed very efficiently (more than 95%), and final concentrations of several ppb (microg/ L) are easily obtained. Representatives of the pollutant group of trihalogen methanes (THMs), monoaromatic hydrocarbons (BTX), and pesticides (simazine) can also be removed (>80%), although the filters are saturated considerably faster in these cases.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Absorption
  • Atrazine / isolation & purification
  • Cyclodextrins*
  • Dendrimers*
  • Filtration
  • Hydrocarbons / isolation & purification
  • Nanotechnology
  • Pesticides / isolation & purification
  • Polyethyleneimine
  • Polypropylenes
  • Simazine / isolation & purification
  • Titanium
  • Water Pollutants, Chemical / isolation & purification*
  • Water Purification / methods*

Substances

  • Cyclodextrins
  • Dendrimers
  • Hydrocarbons
  • Pesticides
  • Polypropylenes
  • Water Pollutants, Chemical
  • titanium dioxide
  • Polyethyleneimine
  • Titanium
  • Atrazine
  • Simazine