Grantee Research Project Results

1999 Progress Report: Development and Characterization of a New Heavy-Metal Selective Inorganic Ion Exchanger

EPA Grant Number: R825422
Title: Development and Characterization of a New Heavy-Metal Selective Inorganic Ion Exchanger
Investigators: Sengupta, Arup K.
Current Investigators: Sengupta, Arup K. , Kney, Arthur D. , Leun, David , Greenleaf, John , DeMarco, Matthew
Institution: Lehigh University
EPA Project Officer: Aja, Hayley
Project Period: November 1, 1996 through October 31, 1998 (Extended to December 31, 2000)
Project Period Covered by this Report: November 1, 1998 through October 31, 1999
Project Amount: $218,643
RFA: Exploratory Research - Water Engineering (1996) RFA Text | Recipients Lists
Research Category: Water , Safer Chemicals , Land and Waste Management

Objective:

The objectives of the research project are to: (1) synthesize granular inorganic ion exchanger particles which can be used in fixed-bed columns to remove dissolved heavy metals; (2) benchmark the performance of this new ion exchanger in comparison with other commercially available chelating exchangers; and (3) elucidate the stoichiometry and underlying sorption mechanism responsible for high heavy-metal-ion affinity.

Progress Summary:

The most significant development during the last year of the project is the preparation of a new hybrid (polymeric/inorganic) material for removal of arsenic and other heavy metals. The new material is durable with high affinities toward As(V) and As(III) species. The material also is amenable to efficient regeneration. Additional experimental works are needed to explore the full potential of the new material.

Future Activities:

It is imperative that we pursue further work with the newly synthesized polymeric/inorganic hybrid sorbent material. The material is inexpensive, durable, and shows high affinity toward a wide variety of toxic metals and metalloids. We would like to receive a no-cost extension of the project until December 31, 2000.

Journal Articles on this Report : 1 Displayed | Download in RIS Format

Publications Views
Other project views:	All 15 publications	4 publications in selected types	All 2 journal articles

Publications
Type	Citation	Project	Document Sources
Journal Article	Leun D, SenGupta AK.. Preparation and characterization of magnetically active polymeric particles (MAPPs) for complex environmental separations. Environmental Science and Technology 2000;34:3276-3282.	R825422 (1999)	not available

Supplemental Keywords:

heavy metals, toxic ions, inorganic ion exchanger, metals removal., RFA, Scientific Discipline, Water, POLLUTANTS/TOXICS, Engineering, Chemistry, Environmental Chemistry, Engineering, Chemistry, & Physics, Arsenic, Chemicals, Drinking Water, Water Pollutants, heavy metals, ion exchange, metal removal, chelating exchanger, treatment, chemical composition, chemical detection techniques, metal speciation, drinking water contaminants, physicochemical, metal-chelate complexes

Progress and Final Reports:

Original Abstract

The perspectives, information and conclusions conveyed in research project abstracts, progress reports, final reports, journal abstracts and journal publications convey the viewpoints of the principal investigator and may not represent the views and policies of ORD and EPA. Conclusions drawn by the principal investigators have not been reviewed by the Agency.