Grantee Research Project Results
2012 Progress Report: Sustainable Catalytic Treatment of Waste Ion Exchange Brines for Reuse During Oxyanion Treatment in Drinking Water
EPA Grant Number: R835174Title: Sustainable Catalytic Treatment of Waste Ion Exchange Brines for Reuse During Oxyanion Treatment in Drinking Water
Investigators: Werth, Charles J , Strathmann, Timothy J.
Institution: University of Illinois Urbana-Champaign
EPA Project Officer: Packard, Benjamin H
Project Period: December 1, 2011 through November 30, 2014 (Extended to November 30, 2016)
Project Period Covered by this Report: December 1, 2011 through November 30,2012
Project Amount: $500,000
RFA: Research and Demonstration of Innovative Drinking Water Treatment Technologies in Small Systems (2011) RFA Text | Recipients Lists
Research Category: Drinking Water , Water
Objective:
The objectives of this work are to 1) identify palladium (Pd) catalyst formulations with sufficient activity to reduce different target oxyanions in brine solutions, 2) determine if catalyst activity can be maintained for extended periods of operations, and 3) assess the economic and environmental life cycle costs of hybrid ion exchange/catalyst treatment systems.
Progress Summary:
During the reporting period, significant progress was made in the areas of brine characterization and catalyst testing. Real brines from water treatment plants were delivered to UIUC and two of them were fully characterized. The characterization led to altering the composition of our synthetic brine for batch and column studies, as the real brines showed higher concentrations of nitrate and a lower concentration of sodium chloride than anticipated.
Future Activities:
During the next reporting period, our primary efforts will focus on continued column testing, catalyst regeneration and life cycle assessment. A suite of regeneration solutions will be tested on the flow-throw column reactor with 0.5wt%Pd-0.05wt%In/AC catalyst. Additionally, we will build a larger flow-through column reactor, which will allow for more samples when deconstructed and provide enough material for triplicate regeneration experiments. Further refinement of the life cycle analysis will be aided by updated kinetic rate data collected as we continue column and batch testing of different catalysts. Pending the results of the column studies, additional brines will be characterized and run through the column. Pending the results of these experiments, we plan to begin design on the pilot reactor during the next year.
Journal Articles on this Report : 3 Displayed | Download in RIS Format
Other project views: | All 57 publications | 15 publications in selected types | All 15 journal articles |
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Choe JK, Mehnert MH, Guest JS, Strathmann TJ, Werth CJ. Comparative assessment of the environmental sustainability of existing and emerging perchlorate treatment technologies for drinking water. Environmental Science & Technology 2013;47(9):4644-4652. |
R835174 (2012) R835174 (2013) R835174 (2014) R835174 (2015) R835174 (Final) |
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Liu J, Choe JK, Sasnow Z, Werth CJ, Strathmann TJ. Application of a Re–Pd bimetallic catalyst for treatment of perchlorate in waste ion-exchange regenerant brine. Water Research 2013:47(1):91-101. |
R835174 (2012) R835174 (2013) R835174 (2014) R835174 (2015) R835174 (Final) |
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Zhang R, Shuai D, Guy KA, Shapley JR, Strathmann TJ, Werth CJ. Elucidation of nitrate reduction mechanisms on a Pd-In bimetallic catalyst using isotope labeled nitrogen species. ChemCatChem 2013;5(1):313-321. |
R835174 (2012) R835174 (2013) R835174 (2014) R835174 (2015) R835174 (Final) |
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Supplemental Keywords:
Nitrate, perchlorate, ion exchange, brine reuse, catalytic reduction, palladium, indium, rhenium, toxics, innovative technology, cost-benefit, integrated assessmentRelevant Websites:
Professor Strathmann’s research website, listing published journal articles:
http://strathmann.cee.illinois.edu/Publications/publications.html
Progress and Final Reports:
Original AbstractThe 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.