![[logo] US EPA](https://webarchive.library.unt.edu/eot2008/20081107213236im_/http://www.epa.gov/epafiles/images/logo_epaseal.gif){kind=logo}
2000 Progress Report: Evaluating a New Class of Imprinted Sorbent Materials for Toxic Metals Removal
EPA Grant Number: R828163Title: Evaluating a New Class of Imprinted Sorbent Materials for Toxic Metals Removal
Investigators: SenGupta, Arup K. , Miller, Alfred
Institution: Lehigh University
EPA Project Officer: Krishnan, Bala S.
Project Period: July 1, 2000 through June 30, 2002
Project Period Covered by this Report: July 1, 2000 through June 30, 2001
Project Amount: $193,000
RFA: Exploratory Research - Environmental Engineering (1999)
Research Category: Engineering and Environmental Chemistry
Description:
Objective:The objective of the study is to develop a new class of hybrid sorbent materials for selective separation of dissolved heavy metals and metalloids. Progress Summary:
The tasks we completed during the last year include: (1) preparation of the Hybrid Ion Exchanger (HIX) materials by dispersing colloid-like hydrated iron oxide particles within macroporous cation-exchange resins; and (2) performance of laboratory tests confirming regenerability of As(V) oxyanions from HIX with sodium hydroxide.
A. The preparation methodology of HIX consisted of the following steps.
B. Photograph of the HIX particles.
C. Desorbability of As(V) from loaded HIX material.
For the HIX material to be reused for tens of cycles, the efficiency of desorption needs to be high.
Future Activities:We will carry out laboratory experiments to seek answers to the following questions:
- Does an HIX column convert As(III) into As(V) during fixed-bed column run?
- Does imprinted HIX show higher arsenate affinity in comparison with competing phosphate anions?
- Is HIX capable of removing both dissolved heavy metal cations (e.g., zinc) and As(V) oxyanions simultaneously?
Journal Articles on this Report: 1 Displayed | Download in RIS Format
| Other project views: | All 16 publications | 5 publications in selected types | All 4 journal articles |
| Type | Citation | ||
|---|---|---|---|
|
|
DeMarco MJ, Sengupta AK, Greenleaf JE. Arsenic removal using a polymeric/inorganic hybrid sorbent. Water Research 2003;37(1):164-176. |
R828163 (2000) R828163 (2001) R828163 (Final) |
not available |
arsenic, heavy metals, metalloids, ion exchange, sorbent, hybrid sorbent, polymeric/inorganic sorbent. , Toxics, POLLUTANTS/TOXICS, Water, TREATMENT/CONTROL, Scientific Discipline, Waste, Wastewater, Engineering, Chemistry, & Physics, Chemicals, Chemistry, Environmental Chemistry, Groundwater remediation, National Recommended Water Quality, Treatment Technologies, arsenic, heavy metals, industrial wastewater, water quality, arsenic removal, heavy metal recovery, acid mine drainage, iron oxide ferrihydrite particles, sorbents
Progress and Final Reports:
Original Abstract
2001 Progress Report
Final Report