Abstract
Absorption of carbon dioxide (CO2) by solvents is an important process in many practical applications such as capture of greenhouse gases from flue gas, gas processing in the chemical and petroleum industries, capture of radioactive isotopes in the nuclear cycle, etc. High pH alkaline solutions were used in this research project to capture CO2. The chemical reaction between CO2 and the hydroxyl ion is known to significantly increase the absorption rate compared to the same process without chemical reaction. The goal of this work is to study the influence of the chemical reaction on the absorption rate. For this purpose, the gas-liquid mass transfer coefficient was measured under reactive and nonreactive conditions. Reactive mass transfer coefficient values were higher than similar ones without chemical reaction. Under the operating conditions used in this work, the mass transfer process was found to be controlled by the liquid phase resistance.
| Original language | English |
|---|---|
| Pages (from-to) | 2026-2033 |
| Number of pages | 8 |
| Journal | Separation Science and Technology (Philadelphia) |
| Volume | 54 |
| Issue number | 13 |
| DOIs | |
| State | Published - Sep 2 2019 |
Funding
Notice: This manuscript has been authored by UT-Battelle, LLC under Contract No. DE-AC05-00OR22725 with the US Department of Energy. The United States Government retains and the publisher, by accepting the article for publication, acknowledges that the United States Government retains a nonexclusive, paid-up, irrevocable, world-wide license to publish or reproduce the published form of this manuscript, or allow others to do so, for United States Government purposes. The Department of Energy will provide public access to these results of federally sponsored research in accordance with the DOE Public Access Plan (http://energy.gov/downloads/doe-public-access-plan). This work was supported by the Nuclear Energy University Programs [NFE-12-03822]. This work was supported by the Nuclear Energy University Programs [NFE-12-03822]. Notice: This manuscript has been authored by UT-Battelle, LLC under Contract No. DE-AC05-00OR22725 with the US Department of Energy. The United States Government retains and the publisher, by accepting the article for publication, acknowledges that the United States Government retains a nonexclusive, paid-up, irrevocable, world-wide license to publish or reproduce the published form of this manuscript, or allow others to do so, for United States Government purposes. The Department of Energy will provide public access to these results of federally sponsored research in accordance with the DOE Public Access Plan (http://energy.gov/downloads/doe-public-access-plan). Funding for this research provided by the Office of Nuclear Energy of the U.S. Department of Energy, under the Nuclear Energy University Program (Grant # NFE-12-03822), is gratefully acknowledged by the authors. This study was conducted at Prairie View A&M University in collaboration with the Oak Ridge National Laboratory (ORNL). Funding for this research provided by the Office of Nuclear Energy of the U.S. Department of Energy, under the Nuclear Energy University Program (Grant # NFE-12-03822), is gratefully acknowledged by the authors. This study was conducted at Prairie View A&M University in collaboration with the Oak Ridge National Laboratory (ORNL).
| Funders | Funder number |
|---|---|
| DOE Public Access Plan | |
| LLC | DE-AC05-00OR22725 |
| Nuclear Energy University Programs | |
| US Department of Energy | |
| UT-Battelle | |
| United States Government | |
| U.S. Department of Energy | |
| Office of Nuclear Energy | |
| Oak Ridge National Laboratory | ORNL |
| Nuclear Energy University Program | NFE-12-03822 |
Keywords
- CO absorption
- mass transfer coefficients
- reactive absorption
