Skip to main content
U.S. Department of Energy
Office of Scientific and Technical Information

Effect of Viscosity of a Deep Eutectic Solvent on CO2 Capture Performance in an Energy-Efficient Membrane Contactor-Based Process

Journal Article · · ACS Omega
 [1];  [1];  [2];  [3];  [1];  [1];  [1];  [1];  [1];  [4];  [5];  [1]
  1. Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
  2. Univ. of Tennessee, Knoxville, TN (United States)
  3. Vanderbilt Univ., Nashville, TN (United States)
  4. Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States). Center for Nanophase Materials Sciences (CNMS)
  5. Univ. of Tennessee, Knoxville, TN (United States). Oak Ridge Innovation Institute; Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Greenhouse gas contributions to climate change have driven intense interest in the separation of CO2 from wet flue gas streams. Deep eutectic solvents (DESs) are an emerging class of highly selective CO2 absorbents. A prototypical DES, reline, is a mixture of choline chloride and urea. Reline is a thermally stable, nontoxic, and biodegradable solvent with negligible volatility and is inexpensive. We demonstrate a scalable and energy-efficient hollow fiber membrane contactor (HFMC)-based process using a green solvent for CO2 capture. This process uses reline in HFMC to provide close interfacial interactions and contact between DES and CO2. This approach overcomes the disadvantages associated with direct absorption in DES and could potentially be applied to a variety of solvent-based CO2 capture methods. Commercial, low-cost polymer hollow fiber membranes were evaluated for the capture of CO2 with reline. From a mixed gas containing N2 and CO2, the DES-based HFMC separated CO2 with a purity of 97 mol %. The effect of the viscosity of reline on the CO2 capture performance was investigated by adding water to the reline. The addition of water to reline significantly reduced its viscosity, which led to a permeate flux of 170 mmol/(m2·h) at 35 °C, 4 bar, and 60 wt % water in solvent, which was approximately 8 times higher than that of the pure reline in the membrane contactor system. In situ Fourier transform infrared spectroscopy and nuclear magnetic resonance (NMR) revealed that reline absorbs CO2 by physical absorption without forming new chemical compounds and that CO2 separation by reline occurs via the pressure swing mechanism. This research provides fundamental insights about green physical solvent-based separation processes and a pathway toward industrial deployment.
Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE; USDOE Laboratory Directed Research and Development (LDRD) Program; USDOE Office of Science (SC), Basic Energy Sciences (BES). Scientific User Facilities (SUF)
Grant/Contract Number:
AC05-00OR22725
OSTI ID:
2496760
Alternate ID(s):
OSTI ID: 2538430
Journal Information:
ACS Omega, Journal Name: ACS Omega Journal Issue: 4 Vol. 10; ISSN 2470-1343
Publisher:
American Chemical Society (ACS)Copyright Statement
Country of Publication:
United States
Language:
English

References (44)

Process Scale‐Up of an Energy‐Efficient Membrane Solvent Extraction Process for Rare Earth Recycling from Electronic Wastes journal July 2022
Direct Air Capture of CO 2 by Physisorbent Materials journal October 2015
CO2 separation by supported liquid membranes synthesized with natural deep eutectic solvents journal July 2020
Using 13X, LiX, and LiPdAgX zeolites for CO 2 capture from post-combustion flue gas journal April 2017
Nonaqueous amine-based absorbents for energy efficient CO2 capture journal April 2019
Global warming projections to 2100 using simple CO2 greenhouse gas modeling and comments on CO2 climate sensitivity factor journal January 2017
Study on the effect of operating parameters towards CO2 absorption behavior of choline chloride – Monoethanolamine deep eutectic solvent and its aqueous solutions journal November 2020
Recent developments and consideration issues in solid adsorbents for CO2 capture from flue gas journal November 2018
Utilization of zeolites as CO2 capturing agents: Advances and future perspectives journal October 2020
Characteristics of Deep eutectic solvents for CO2 capture with Hydro effects for improvement of mass transfer journal July 2022
Photophysics, rotational dynamics and fluorescence lifetime imaging study of coumarin dyes in deep eutectic solvent journal April 2019
NMR study of choline chloride-based deep eutectic solvents journal September 2019
Sorption direct air capture with CO2 utilization journal March 2023
A comparison of the CO2 capture characteristics of zeolites and metal–organic frameworks journal March 2012
Improved CO2 separation performance and interfacial affinity of composite membranes by incorporating amino acid-based deep eutectic solvents journal October 2021
Deep Eutectic Solvents: A Review of Fundamentals and Applications journal December 2020
Progress in Amine-Functionalized Silica for CO2 Capture: Important Roles of Support and Amine Structure journal January 2022
Selective Recovery of Rare Earth Elements from a Wide Range of E-Waste and Process Scalability of Membrane Solvent Extraction journal December 2019
A Membrane Contactor Enabling Energy-Efficient CO2 Capture from Point Sources with Deep Eutectic Solvents journal February 2023
Highly Efficient and Reversible CO 2 Capture by Task-Specific Deep Eutectic Solvents journal July 2019
Densities, Viscosities, and Electrical Conductivities of Pure Anhydrous Reline and Its Mixtures with Water in the Temperature Range (293.15 to 338.15) K journal June 2019
Quantum Chemical Simulations of CO2 and N2 Capture in Reline, a Prototypical Deep Eutectic Solvent journal October 2023
First-Principles Molecular Dynamics Study of a Deep Eutectic Solvent: Choline Chloride/Urea and Its Mixture with Water journal January 2018
Water-Induced Restructuring of the Surface of a Deep Eutectic Solvent journal January 2022
Influence of Hydration on the Structure of Reline Deep Eutectic Solvent: A Molecular Dynamics Study journal November 2018
Comprehensive Evaluation of a Deep Eutectic Solvent Based CO2 Capture Process through Experiment and Simulation journal July 2021
Comparative Study of CO 2 Capture by Carbon Nanotubes, Activated Carbons, and Zeolites journal September 2008
Reducing the Cost of CO 2 Capture from Flue Gases Using Membrane Technology journal March 2008
New Insights into the Interactions of CO 2 with Amine-Functionalized Silica journal December 2008
Deep Eutectic Solvents Formed between Choline Chloride and Carboxylic Acids:  Versatile Alternatives to Ionic Liquids journal July 2004
Designing Adsorbents for CO 2 Capture from Flue Gas-Hyperbranched Aminosilicas Capable of Capturing CO 2 Reversibly journal March 2008
Robust Metal–Triazolate Frameworks for CO 2 Capture from Flue Gas journal January 2020
Effect of Water on the Density, Viscosity, and CO2 Solubility in Choline Chloride/Urea journal November 2014
Surfactant promoted solid amine sorbents for CO 2 capture journal January 2012
Molecular and ionic diffusion in aqueous – deep eutectic solvent mixtures: probing inter-molecular interactions using PFG NMR journal January 2015
Liquid structure of the choline chloride-urea deep eutectic solvent (reline) from neutron diffraction and atomistic modelling journal January 2016
Impact of water on the melting temperature of urea + choline chloride deep eutectic solvent journal January 2016
Nanostructure of the deep eutectic solvent/platinum electrode interface as a function of potential and water content journal January 2019
Cascade utilization of lignocellulosic biomass to high-value products journal January 2019
Deep-eutectic solvents playing multiple roles in the synthesis of polymers and related materials journal January 2012
Deep eutectic solvents: syntheses, properties and applications journal January 2012
Carbon dioxide clathrate hydrate FTIR spectrum journal July 2009
Unraveling relationship between complex lifetimes and microscopic diffusion in deep eutectic solvents journal July 2024
Direct Air Capture of CO2 Using Solvents journal June 2022

Similar Records

A Membrane Contactor Enabling Energy-Efficient CO2 Capture from Point Sources with Deep Eutectic Solvents
Journal Article · Tue Feb 21 19:00:00 EST 2023 · Industrial and Engineering Chemistry Research · OSTI ID:1994728

Pilot Test of a Nanoporous, Super-hydrophobic Membrane Contactor Process for Post-combustion CO2 Capture
Technical Report · Fri Sep 30 00:00:00 EDT 2022 · OSTI ID:1890203