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Title: Supercritical Treatment Technology for Water Purification - Phase I STTR Final Technical Report

Abstract

Envergex LLC partnered with the University of North Dakota on this project titled “Supercritical Treatment Technology for Water Purification” under a grant DE-SC0018523 from Department of Energy’s Small Business Innovative Research and Technology Transfer (STTR) Program. In this project, we demonstrated proof-of-concept of the supercritical water purification process with laboratory-based testing. We tested a novel reactor design and process concept for salt separation from, and destruction of organics in, hypersaline water. We investigated multiple approaches for targeted precipitation to minimize energy for desalination, and identified a viable option to evaluate further in the next phase of the project. Salt separation efficiency from high concentration salt solutions was evaluated as a function of a range of operating conditions (temperature, pressure, inlet salt concentration and supercritical reactor configuration). The optimal range for effective separation and minimized energy consumption were identified. The effect of supercritical conditions on destruction of organic components in the hypersaline solution was also evaluated, including the effect of temperature as well as the enhancement with catalysts. It was established that catalytic supercritical oxidation can be very effective in reducing the concentration of organics and mineralizing it to CO2 and H2O.

Authors:
 [1];  [1];  [2];  [2];  [2]
  1. Envergex LLC
  2. University of North Dakota
Publication Date:
Research Org.:
Envergex LLC
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1543262
Report Number(s):
DOE-ENVERGEX-SC0018523
DOE Contract Number:  
SC0018523
Type / Phase:
STTR (Phase I)
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; 42 ENGINEERING; 54 ENVIRONMENTAL SCIENCES; Desalination, Supercritical Water, Organics Destruction, Hypersaline

Citation Formats

Srinivasachar, Srivats, Nelson, Teagan, Mann, Michael, Dyrstad-Cincotta, Nicholas, and Laudal, Daniel. Supercritical Treatment Technology for Water Purification - Phase I STTR Final Technical Report. United States: N. p., 2019. Web.
Srinivasachar, Srivats, Nelson, Teagan, Mann, Michael, Dyrstad-Cincotta, Nicholas, & Laudal, Daniel. Supercritical Treatment Technology for Water Purification - Phase I STTR Final Technical Report. United States.
Srinivasachar, Srivats, Nelson, Teagan, Mann, Michael, Dyrstad-Cincotta, Nicholas, and Laudal, Daniel. Mon . "Supercritical Treatment Technology for Water Purification - Phase I STTR Final Technical Report". United States.
@article{osti_1543262,
title = {Supercritical Treatment Technology for Water Purification - Phase I STTR Final Technical Report},
author = {Srinivasachar, Srivats and Nelson, Teagan and Mann, Michael and Dyrstad-Cincotta, Nicholas and Laudal, Daniel},
abstractNote = {Envergex LLC partnered with the University of North Dakota on this project titled “Supercritical Treatment Technology for Water Purification” under a grant DE-SC0018523 from Department of Energy’s Small Business Innovative Research and Technology Transfer (STTR) Program. In this project, we demonstrated proof-of-concept of the supercritical water purification process with laboratory-based testing. We tested a novel reactor design and process concept for salt separation from, and destruction of organics in, hypersaline water. We investigated multiple approaches for targeted precipitation to minimize energy for desalination, and identified a viable option to evaluate further in the next phase of the project. Salt separation efficiency from high concentration salt solutions was evaluated as a function of a range of operating conditions (temperature, pressure, inlet salt concentration and supercritical reactor configuration). The optimal range for effective separation and minimized energy consumption were identified. The effect of supercritical conditions on destruction of organic components in the hypersaline solution was also evaluated, including the effect of temperature as well as the enhancement with catalysts. It was established that catalytic supercritical oxidation can be very effective in reducing the concentration of organics and mineralizing it to CO2 and H2O.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2019},
month = {7}
}

Technical Report:
This technical report may be released as soon as July 22, 2023
Other availability
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