Related Topics: Homeland Security Research

Homeland Security Research Products in the Science Inventory

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Records with

  • Organization = [ORD-NHSRC]
  • Keyword = 'water security' AND 'chemical'.
Records 1 to 25 of 195

2021
Decontamination of urban surfaces contaminated with radioactive materials and consequent onsite recycling of the waste water
(JOURNAL) [Published : Feb 04, 2021]
Enhancing rapid remediation strategies is paramount for recovery after a large-scale nuclear contamination event in an urban environment. Some current strategies recommend use of readily available equipment, materials, and facilities to expedite recovery. For example, applying pr...
2019
A case study of cesium sorption onto concrete materials and evaluation of wash agents: Implications for wide area recovery
(JOURNAL) [Published : Jun 01, 2019]
The sorption and desorption properties of radionuclides onto common building materials such as concrete are critical factors in the improvement of techniques for mitigating a release of nuclear or radiological material to the urban environment. A potential option for the early p...
Future of Water Distribution Modeling and Data Analytics Tools
(PUBLISHED REPORT) [Published : Oct 01, 2019]
The U.S. Environmental Protection Agency (EPA) is responsible for helping communities prepare for and recover from disasters that result in threats to public health and the environment. EPA’s National Homeland Security Research Center’s (NHSRC) mission is to focus on the research...
High Pressure Decontamination of Building Materials During Radiological Incident Recovery
(JOURNAL) [Published : Nov 01, 2019]
High pressure decontamination of certain surface building materials is concluded to be a promising rapid, readily available response technique, with the data from this study informing its practical implementation. Removal efficacy of radionuclides from concrete are high when perf...
Numerical Model for Decontamination of Organic Contaminants in Polyethylene Drinking Water Pipes in Premise Plumbing by Flushing
(JOURNAL) [Published : Jul 01, 2019]
Polymeric materials such as polyethylene and polypropylene are used extensively for drinking water applications. These materials are subject to permeation by organic compounds, such as those found in petroleum products and industrial chemicals, which can result in water quality i...
Quantifying hydraulic and water quality uncertainty to inform sampling of drinking water distribution systems
(JOURNAL) [Published : Jan 01, 2019]
Sampling of drinking water distribution systems is performed to satisfy regulatory requirements but also to respond to customer complaints or emergency situations. Water distribution system modeling techniques can be used to plan and inform sampling strategies; however, a high de...
The Use of Hollow Fiber Dialysis Filters Operated in Axial Flow Mode for Recovery of Microorganisms in Large Volume Water Samples with High Loadings of Particulate Matter
(JOURNAL) [Published : Apr 05, 2019]
The objective of this study was to evaluate axial flow hollow fiber ultrafiltration (HFUF) in the recovery of target organisms in large volumes of turbid water that would be similar to water encountered in the cleanup of a biologically contaminated area such as the B. anthracis c...
2018
Direct aqueous injection of the fluoroacetate anion in potable water for analysis by liquid chromatography tandem mass-spectrometry
(JOURNAL) [Published : Oct 29, 2018]
Journal Article describes the analysis of sodium fluoroacetate by liquid chromatography/tandem mass spectrometry. Four different drinking waters contaminated with the target analyte were evaluated.
Electrolyte Selection and Microbial Toxicity for Electrochemical Oxidative Water Treatment Using a Boron-doped Diamond Anode to Support Site Specific Contamination Incident Response
(JOURNAL) [Published : Apr 06, 2018]
This journal article study addresses such concerns by demonstrating successful boron-doped diamond (BDD) electrochemical advanced oxidation process (AOP) pre-treatment for contaminated waters prior to discharge to wastewater treatment facilities.
Mass Imbalances in EPANET Water-quality Simulations
(JOURNAL) [Published : Apr 06, 2018]
This journal article examines EPANET, which is widely employed to simulate water quality in water distribution systems. However, the time-driven simulation approach used to determine concentrations of water-quality constituents provides accurate results, in general, only for smal...
Persistence and Decontamination of Radioactive Cesium in a Model Drinking Water System
(PUBLISHED REPORT) [Published : Jul 17, 2018]
The objective of this report was to evaluate the persistence of radioactive cesium-137 (Cs-137), on concrete-lined, copper, and polyvinyl chloride (PVC) pipe, and possible decontamination approaches. During this study, conditions within operational drinking water pipes were simul...
Shipment, Preservation, and Analysis of Chemical Warfare Agents (CWAs) in Environmental Matrices
(SUMMARY) [Published : Sep 03, 2018]
The document is intended to be applicable to consequence management activities that EPA will be involved with and will require remediation of contaminated areas by an urban release of chemical warfare agents (CWA). The document summarizes the gaps that have been addressed towards...
Standing Operating Procedures (SOP) for the Development of Provisional Advisory Levels (PALs) for Hazardous Chemicals
(PUBLISHED REPORT) [Published : Feb 28, 2018]
Report: This report has been completed under a peer review plan that included internal technical review and external peer review. It distinguishes the types of chemical risk information necessary to support emergency response decisions and emphasizes the importance of having adv...
2017
Adsorption of Malathion onto Copper and Iron Surfaces Relevant to Water Infrastructure
(JOURNAL) [Published : Nov 01, 2017]
This study investigated the adsorption of malathion to copper and iron surfaces including pipe specimens similar to those in drinking water infrastructure.
Advanced Oxidation in Challenging Waters: Effects on Performance and Microbial Toxicity
(PAPER IN NON-EPA PROCEEDINGS) [Published : Jan 01, 2017]
Advanced oxidation processes (AOPs) may be a viable strategy to treat waters contaminated with a variety of organic contaminants. Results from this study may help design effective treatment strategies for water matrices containing substances that interfere with AOP treatment, a t...
Analytical Protocol for VX Using Gas Chromatography/Mass Spectrometry (GC/MS)
(PUBLISHED REPORT) [Published : Sep 20, 2017]
Report
CANARY Eases Water Quality Event Detection
(JOURNAL) [Published : Apr 01, 2017]
CANARY is a free EPA software product used to enhance the detection of contamination incidents in distribution systems (i.e. Event Detection System) using typical water quality sensors such as those measuring free chlorine, total organic carbon, and electrical conductivity. Worki...
EPA's Water Security Test Bed
(SUMMARY) [Published : Apr 18, 2017]
Technical Brief