Adsorptive Removal Processes with Polymeric Resins
Selective removal of nonionic or
weakly anionic organics from aqueous waste or process streams can be
achieved by adsorptive processes with polymeric resins (Gusler et al.,
1993). Polymeric resins can be easily regenerated in situ and they have
been found to have sorption capacities which approach or exceed that of
activated carbon in some cases. Polymeric resins are available in a range
of different functionalities and thus can be used for selective removal
from multicomponent systems. Unfortunately, the feasibility for specific
pollutant removal in multicomponent situations cannot be predicted from
the existing body of knowledge. Information is also lacking on the
dynamics of multi-solute adsorption onto commercial polymeric resins and
regeneration in packed columns. Although there are now several methods for
predicting and correlating multi-solute adsorption from aqueous systems,
to date, the various prediction and correlation methods have not been
rigorously tested for polymeric resins with well defined multicomponent
mixtures containing more than two components, in part due to the lack of
experimental data. Moreover, information on resin regeneration is scarce.
The present project focuses on a systematic evaluation of the dynamic
adsorption/regeneration of polymeric resins for removal and concentration
of target solutes from aqueous systems. Both commercial polymeric resins
and novel ceramic-grafted polymer composite resins are being studied. The
results of the study will provide much needed information for the scale up
of polymer-based adsorption processes for both in-plant recovery and
recycle and for remediation strategies.
References:
- Cohen, Y. Polymeric Resins for VOC Removal from Aqueous Systems, Volatile Organic Compounds (VOC) Recovery Seminar, EPA/625/R-99/005, ORD, EPA National Risk Management Research Laboratory, Sept 16-17, 1998.
- Cohen, Y. And J. Klein, "Removal of Organics from Aqueous Systems," in Novel Adsorbents and Their Environmental Applications, AIChE Symposium Series, 91, 72-78 (1995).
- Browne T. And Y. Cohen, "Aqueous Phase Adsorption of Trichloroethylene and Chloroform by Polymeric Resins and Activated Carbon," Industrial and Engineering Chemistry Research, 29, 1338-1345 (1990).
- Browne, T. and Y. Cohen, "Polymer-Grafted Silica: A Screening System for Polymeric Adsorption Resin Development," Industrial and Engineering Chemistry Research, 32, 716-725 (1993).
- Gusler, M. G., T. Browne and Yoram Cohen, "Sorption of Organics from Aqueous Solution onto Polymeric Resins," Industrial and Engineering Chemistry Research, 32, 2727-2735 (1993).
- Gusler, G. M. and Y. Cohen, "Swelling Equilibrium of Highly Crosslinked Polymeric Resins," Industrial and Engineering Chemistry Research, 33, 2345-2357 (1994).
Last update:
10/31/2004
