Permeability and Stability of Hydrophobic Tubular Ceramic Membrane Contactor for CO<sub>2</sub> Desorption from MEA Solution
Ceramic membrane contactors hold great promise for CO<sub>2</sub> desorption due to their high mass transfer area as well as the favorable characteristics of ceramic materials to resist harsh operating conditions. In this work, a hydrophobic tubular asymmetric alpha-alumina (α-Al<sub&...
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MDPI AG
2021-12-01
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| Series: | Membranes |
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| Online Access: | https://www.mdpi.com/2077-0375/12/1/8 |
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| author | Yunzhao Guo Wenbo Qi Kaiyun Fu Xianfu Chen Minghui Qiu Yiqun Fan |
| author_facet | Yunzhao Guo Wenbo Qi Kaiyun Fu Xianfu Chen Minghui Qiu Yiqun Fan |
| author_sort | Yunzhao Guo |
| collection | DOAJ |
| description | Ceramic membrane contactors hold great promise for CO<sub>2</sub> desorption due to their high mass transfer area as well as the favorable characteristics of ceramic materials to resist harsh operating conditions. In this work, a hydrophobic tubular asymmetric alpha-alumina (α-Al<sub>2</sub>O<sub>3</sub>) membrane was prepared by grafting a hexadecyltrimethoxysilane ethanol solution. The hydrophobicity and permeability of the membrane were evaluated in terms of water contact angle and nitrogen (N<sub>2</sub>) flux. The hydrophobic membrane had a water contact angle of ~132° and N<sub>2</sub> flux of 0.967 × 10<sup>−5</sup> mol/(m<sup>2</sup>∙s∙Pa). CO<sub>2</sub> desorption from the aqueous monoethanolamine (MEA) solution was conducted through the hydrophobic tubular ceramic membrane contactor. The effects of operating conditions, such as CO<sub>2</sub> loading, liquid flow rate, liquid temperature and permeate side pressure, on CO<sub>2</sub> desorption flux were investigated. Moreover, the stability of the membrane was evaluated after the immersion of the ceramic membrane in an MEA solution at 373 K for 30 days. It was found that the hydrophobic α-Al<sub>2</sub>O<sub>3</sub> membrane had good stability for CO<sub>2</sub> desorption from the MEA solution, resulting in a <10% reduction of N<sub>2</sub> flux compared to the membrane without MEA immersion. |
| first_indexed | 2024-03-10T01:00:00Z |
| format | Article |
| id | doaj.art-c52921b090b4408485737f274e5e1c4b |
| institution | Directory Open Access Journal |
| issn | 2077-0375 |
| language | English |
| last_indexed | 2024-03-10T01:00:00Z |
| publishDate | 2021-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Membranes |
| spelling | doaj.art-c52921b090b4408485737f274e5e1c4b2023-11-23T14:37:52ZengMDPI AGMembranes2077-03752021-12-01121810.3390/membranes12010008Permeability and Stability of Hydrophobic Tubular Ceramic Membrane Contactor for CO<sub>2</sub> Desorption from MEA SolutionYunzhao Guo0Wenbo Qi1Kaiyun Fu2Xianfu Chen3Minghui Qiu4Yiqun Fan5State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing 211816, ChinaState Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing 211816, ChinaState Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing 211816, ChinaState Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing 211816, ChinaState Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing 211816, ChinaState Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing 211816, ChinaCeramic membrane contactors hold great promise for CO<sub>2</sub> desorption due to their high mass transfer area as well as the favorable characteristics of ceramic materials to resist harsh operating conditions. In this work, a hydrophobic tubular asymmetric alpha-alumina (α-Al<sub>2</sub>O<sub>3</sub>) membrane was prepared by grafting a hexadecyltrimethoxysilane ethanol solution. The hydrophobicity and permeability of the membrane were evaluated in terms of water contact angle and nitrogen (N<sub>2</sub>) flux. The hydrophobic membrane had a water contact angle of ~132° and N<sub>2</sub> flux of 0.967 × 10<sup>−5</sup> mol/(m<sup>2</sup>∙s∙Pa). CO<sub>2</sub> desorption from the aqueous monoethanolamine (MEA) solution was conducted through the hydrophobic tubular ceramic membrane contactor. The effects of operating conditions, such as CO<sub>2</sub> loading, liquid flow rate, liquid temperature and permeate side pressure, on CO<sub>2</sub> desorption flux were investigated. Moreover, the stability of the membrane was evaluated after the immersion of the ceramic membrane in an MEA solution at 373 K for 30 days. It was found that the hydrophobic α-Al<sub>2</sub>O<sub>3</sub> membrane had good stability for CO<sub>2</sub> desorption from the MEA solution, resulting in a <10% reduction of N<sub>2</sub> flux compared to the membrane without MEA immersion.https://www.mdpi.com/2077-0375/12/1/8membrane contactorcarbon dioxidedesorptionceramic membrane |
| spellingShingle | Yunzhao Guo Wenbo Qi Kaiyun Fu Xianfu Chen Minghui Qiu Yiqun Fan Permeability and Stability of Hydrophobic Tubular Ceramic Membrane Contactor for CO<sub>2</sub> Desorption from MEA Solution Membranes membrane contactor carbon dioxide desorption ceramic membrane |
| title | Permeability and Stability of Hydrophobic Tubular Ceramic Membrane Contactor for CO<sub>2</sub> Desorption from MEA Solution |
| title_full | Permeability and Stability of Hydrophobic Tubular Ceramic Membrane Contactor for CO<sub>2</sub> Desorption from MEA Solution |
| title_fullStr | Permeability and Stability of Hydrophobic Tubular Ceramic Membrane Contactor for CO<sub>2</sub> Desorption from MEA Solution |
| title_full_unstemmed | Permeability and Stability of Hydrophobic Tubular Ceramic Membrane Contactor for CO<sub>2</sub> Desorption from MEA Solution |
| title_short | Permeability and Stability of Hydrophobic Tubular Ceramic Membrane Contactor for CO<sub>2</sub> Desorption from MEA Solution |
| title_sort | permeability and stability of hydrophobic tubular ceramic membrane contactor for co sub 2 sub desorption from mea solution |
| topic | membrane contactor carbon dioxide desorption ceramic membrane |
| url | https://www.mdpi.com/2077-0375/12/1/8 |
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