HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Abstract Full Text Free Full Text (PDF) Free Alert me when this article is cited Alert me if a correction is posted Services Related articles in JEQ Similar articles in this journal Similar articles in Web of Science Similar articles in PubMed Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via HighWire Citing Articles via Web of Science (5) Citing Articles via Google Scholar Google Scholar Articles by Adam, M. L. Articles by Snow, D. D. Search for Related Content PubMed PubMed Citation Articles by Adam, M. L. Articles by Snow, D. D. GeoRef GeoRef Citation Agricola Articles by Adam, M. L. Articles by Snow, D. D. Related Collections Remediation Organic Compounds Water Pollution Ground Water Quality

Remediating RDX-Contaminated Ground Water with Permanganate

Laboratory Investigations for the Pantex Perched Aquifer

^a Department of Civil Engineering, University of Nebraska, Lincoln, NE 68588-0531
^b School of Natural Resources, University of Nebraska, Lincoln, NE 68583-0915
^c Water Science Laboratory, University of Nebraska, Lincoln, NE 68583-0844

View larger version (17K): [in a new window]   Fig. 1. Loss of RDX and 14C and production of 14CO2 following treatment of RDX solution (without aquifer solids) with 20000 mg KMnO4 L–1 using a continuous flow-through trapping system. The term Co represents initial RDX or 14C in reaction flasks at t = 0 h. Bars on symbols represent standard deviations of means (n = 4); where absent, bars fall within symbols.

View larger version (28K): [in a new window]   Fig. 2. Loss of RDX from an aquifer slurry treated with varying KMnO4 concentrations. Bars on symbols represent standard deviations of means (n = 4); where absent, bars fall within symbols.

View larger version (34K): [in a new window]   Fig. 3. Loss of RDX and 14C from an aquifer slurry treated with repeated applications of varying KMnO4 concentrations. Bars on symbols represent standard deviations of means (n = 4); where absent, bars fall within symbols.

View larger version (38K): [in a new window]   Fig. 4. (A) Effects of initial RDX concentration on RDX destruction and (B) loss of 14C following treatment of aquifer slurry with 4000 mg KMnO4 L–1. Effects of initial pH on RDX destruction kinetics in an aquifer slurry following treatment with 4000 mg KMnO4 L–1. Changes in (C) RDX concentration, (D) 14C activity, and (E) pH. Bars on symbols represent standard deviations of means (n = 4); where absent, bars fall within symbols.

View larger version (29K): [in a new window]   Fig. 5. Ion chromatographs for permanganate-treated RDX and quenched with H2O2. (A–D) Total ion chromatograph and selected ions (m/z) using ion trap detection.

View larger version (21K): [in a new window]   Fig. 6. Loss of RDX and 14C and production of 14CO2 and N2O from permanganate-treated RDX. For N2O production, Co = maximum amount of N2O that could be obtained based on moles of RDX nitrogen added. Bars on symbols represent standard deviations of means (n = 4); where absent, bars fall within symbols.

View larger version (23K): [in a new window]   Fig. 7. Cumulative 14CO2 produced (% of initial 14C) from aquifer microcosms incubated with KMnO4–treated RDX (quenched and unquenched) and parent RDX. All microcosms received the same initial radioisotope activity (i.e., dpm). Bars on symbols represent standard deviations of means (n = 4); where absent, bars fall within symbols.