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Title: COHO - Utilizing Waste Heat and Carbon Dioxide at Power Plants for Water Treatment

Abstract

The COHO is a breakthrough water purification system that can concentrate challenging feed waters using carbon dioxide and low-grade heat. For this project, we studied feeds in a lab-scale system to simulate COHO’s potential to operate at coal- powered power plants. COHO proved successful at concentrating the highly scaling and challenging wastewaters derived from a power plant’s cooling towers and flue gas desulfurization units. We also found that COHO was successful at scrubbing carbon dioxide from flue gas mixtures. Thermal regeneration of the switchable polarity solvent forward osmosis draw solution ended up requiring higher temperatures than initially anticipated, but we also found that the draw solution could be polished via reverse osmosis. A techno-economic analysis indicates that installation of a COHO at a power plant for wastewater treatment would result in significant savings.

Authors:
 [1];  [1];  [1];  [1];  [1];  [1];  [1]
  1. Porifera Inc., Hayward, CA (United States)
Publication Date:
Research Org.:
Porifera Inc., Hayward, CA (United States)
Sponsoring Org.:
USDOE Office of Fossil Energy (FE)
OSTI Identifier:
1372489
Report Number(s):
DOE-PORIFERA-0024057
DOE Contract Number:
FE0024057
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
20 FOSSIL-FUELED POWER PLANTS

Citation Formats

Kaur, Sumanjeet, Wilson, Aaron, Wendt, Daniel, Mendelssohn, Jeffrey, Bakajin, Olgica, Desormeaux, Erik, and Klare, Jennifer. COHO - Utilizing Waste Heat and Carbon Dioxide at Power Plants for Water Treatment. United States: N. p., 2017. Web. doi:10.2172/1372489.
Kaur, Sumanjeet, Wilson, Aaron, Wendt, Daniel, Mendelssohn, Jeffrey, Bakajin, Olgica, Desormeaux, Erik, & Klare, Jennifer. COHO - Utilizing Waste Heat and Carbon Dioxide at Power Plants for Water Treatment. United States. doi:10.2172/1372489.
Kaur, Sumanjeet, Wilson, Aaron, Wendt, Daniel, Mendelssohn, Jeffrey, Bakajin, Olgica, Desormeaux, Erik, and Klare, Jennifer. Tue . "COHO - Utilizing Waste Heat and Carbon Dioxide at Power Plants for Water Treatment". United States. doi:10.2172/1372489. https://www.osti.gov/servlets/purl/1372489.
@article{osti_1372489,
title = {COHO - Utilizing Waste Heat and Carbon Dioxide at Power Plants for Water Treatment},
author = {Kaur, Sumanjeet and Wilson, Aaron and Wendt, Daniel and Mendelssohn, Jeffrey and Bakajin, Olgica and Desormeaux, Erik and Klare, Jennifer},
abstractNote = {The COHO is a breakthrough water purification system that can concentrate challenging feed waters using carbon dioxide and low-grade heat. For this project, we studied feeds in a lab-scale system to simulate COHO’s potential to operate at coal- powered power plants. COHO proved successful at concentrating the highly scaling and challenging wastewaters derived from a power plant’s cooling towers and flue gas desulfurization units. We also found that COHO was successful at scrubbing carbon dioxide from flue gas mixtures. Thermal regeneration of the switchable polarity solvent forward osmosis draw solution ended up requiring higher temperatures than initially anticipated, but we also found that the draw solution could be polished via reverse osmosis. A techno-economic analysis indicates that installation of a COHO at a power plant for wastewater treatment would result in significant savings.},
doi = {10.2172/1372489},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Jul 25 00:00:00 EDT 2017},
month = {Tue Jul 25 00:00:00 EDT 2017}
}

Technical Report:

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