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Title: Capacitive Deionization for the Extraction and Recovery of Butyrate

Abstract

Separation processes underpin chemical manufacturing, energy and fuel production, resource recovery, and water purification. Capacitive deionization (CDI) is an electrochemical separation technique based on electrosorption of charged species from an aqueous solution. This work reports the development and application of CDI for the extraction and recovery of butyrate, a carboxylate anion that is key to bioenergy production, among other applications. Electrosorption of sodium butyrate was evaluated using a bench-scale CDI system with activated carbon cloth electrodes. Applying an external potential (1.2 V) enhanced the adsorption capacity of activated carbon for butyrate by 250%. Reversible electrosorption was also demonstrated by extracting and recovering butyrate at 1.2 and 0 V, respectively. Performance metrics including butyrate adsorption and desorption capacities, adsorption and desorption rates, charge efficiency, energy consumption, and recovery are reported. Furthermore, this study also investigates the long-term operational stability of the system by cycling the cell more than 1000 times using 1.2 and 0 V for charging and discharging, respectively. Subsequent physicochemical characterization indicates increased oxygen content (from similar to 2% to >8%), decreased specific surface area (by similar to 20%), and decreased pore volume (by similar to 20%), attributed to carbon oxidation. Overall, this work informs the design of CDImore » for organic anion separation and recovery.« less

Authors:
ORCiD logo [1];  [1]
  1. Argonne National Laboratory (ANL), Argonne, IL (United States)
Publication Date:
Research Org.:
Argonne National Laboratory (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Office of Sustainable Transportation. Bioenergy Technologies Office (BETO); USDOE Office of Science (SC), Basic Energy Sciences (BES). Scientific User Facilities (SUF)
OSTI Identifier:
2203835
Grant/Contract Number:  
AC02-06CH11357
Resource Type:
Accepted Manuscript
Journal Name:
ACS Sustainable Chemistry & Engineering
Additional Journal Information:
Journal Volume: 11; Journal Issue: 16; Journal ID: ISSN 2168-0485
Publisher:
American Chemical Society (ACS)
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; Adsorption; Carbon; Electrical conductivity; Electrodes; Porous materials; separation; electrosorption; carboxylate; bioenergy; ion recovery

Citation Formats

Valentino, Lauren, and Alejandre, Airelle. Capacitive Deionization for the Extraction and Recovery of Butyrate. United States: N. p., 2023. Web. doi:10.1021/acssuschemeng.3c00221.
Valentino, Lauren, & Alejandre, Airelle. Capacitive Deionization for the Extraction and Recovery of Butyrate. United States. https://doi.org/10.1021/acssuschemeng.3c00221
Valentino, Lauren, and Alejandre, Airelle. Tue . "Capacitive Deionization for the Extraction and Recovery of Butyrate". United States. https://doi.org/10.1021/acssuschemeng.3c00221. https://www.osti.gov/servlets/purl/2203835.
@article{osti_2203835,
title = {Capacitive Deionization for the Extraction and Recovery of Butyrate},
author = {Valentino, Lauren and Alejandre, Airelle},
abstractNote = {Separation processes underpin chemical manufacturing, energy and fuel production, resource recovery, and water purification. Capacitive deionization (CDI) is an electrochemical separation technique based on electrosorption of charged species from an aqueous solution. This work reports the development and application of CDI for the extraction and recovery of butyrate, a carboxylate anion that is key to bioenergy production, among other applications. Electrosorption of sodium butyrate was evaluated using a bench-scale CDI system with activated carbon cloth electrodes. Applying an external potential (1.2 V) enhanced the adsorption capacity of activated carbon for butyrate by 250%. Reversible electrosorption was also demonstrated by extracting and recovering butyrate at 1.2 and 0 V, respectively. Performance metrics including butyrate adsorption and desorption capacities, adsorption and desorption rates, charge efficiency, energy consumption, and recovery are reported. Furthermore, this study also investigates the long-term operational stability of the system by cycling the cell more than 1000 times using 1.2 and 0 V for charging and discharging, respectively. Subsequent physicochemical characterization indicates increased oxygen content (from similar to 2% to >8%), decreased specific surface area (by similar to 20%), and decreased pore volume (by similar to 20%), attributed to carbon oxidation. Overall, this work informs the design of CDI for organic anion separation and recovery.},
doi = {10.1021/acssuschemeng.3c00221},
journal = {ACS Sustainable Chemistry & Engineering},
number = 16,
volume = 11,
place = {United States},
year = {Tue Apr 11 00:00:00 EDT 2023},
month = {Tue Apr 11 00:00:00 EDT 2023}
}

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