CO2 adsorption on modified carbon coated monolith: effect of surface modification by using alkaline solutions
A monolithic column was used to study the feasibility of modified carbon-coated monolith for recovery of CO2 from gaseous mixtures (He/CO2) in a variety of operating conditions. Carbon-coated monolith was prepared by dip-coating method and modified by two alkaline solutions, i.e. NH3 and KOH. The su...
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier BV
2015
|
| Online Access: | http://psasir.upm.edu.my/id/eprint/44081/ http://psasir.upm.edu.my/id/eprint/44081/1/CO2%20adsorption%20on%20modified%20carbon%20coated%20monolith%20effect%20of%20surface%20modification%20by%20using%20alkaline%20solutions.pdf |
| _version_ | 1848850392937398272 |
|---|---|
| author | Hosseini, Soraya Marahel, Ehsan Bayesti, Iman Abbasi, Ali Abdullah, Luqman Chuah Choong, Thomas Shean Yaw |
| author_facet | Hosseini, Soraya Marahel, Ehsan Bayesti, Iman Abbasi, Ali Abdullah, Luqman Chuah Choong, Thomas Shean Yaw |
| author_sort | Hosseini, Soraya |
| building | UPM Institutional Repository |
| collection | Online Access |
| description | A monolithic column was used to study the feasibility of modified carbon-coated monolith for recovery of CO2 from gaseous mixtures (He/CO2) in a variety of operating conditions. Carbon-coated monolith was prepared by dip-coating method and modified by two alkaline solutions, i.e. NH3 and KOH. The surface properties of the carbon-coated monolith were altered by functional groups via KOH and NH3 treatments. The comparative study of CO2 uptake by two different adsorbents, i.e. unmodified and modified carbon-coated monolith, demonstrated that the applied modification process had improved CO2 adsorption. The presence of nitrogen- and oxygen-containing functional groups on the surface of the carbon led to an improved level of microporosity on the synthesized carbon-coated monolith. The physical parameters such as higher surface area, lower pore diameter, and larger micropore volume of modified monoliths indicated direct influence on the adsorbed amount of CO2. In the present study, the Deactivation Model is applied to analyze the breakthrough curves. The adsorption capacity increased with an increase in pressure and concentration, while a reduction of CO2 adsorption capacity was occurred with increase in temperature. Ammonia (NH3) and potassium hydroxide (KOH)-modified carbon-coated monolith showed an increase of approximately 12 and 27% in CO2 adsorption, respectively, as compared to unmodified carbon-coated monolith. |
| first_indexed | 2025-11-15T10:05:34Z |
| format | Article |
| id | upm-44081 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T10:05:34Z |
| publishDate | 2015 |
| publisher | Elsevier BV |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-440812022-03-14T04:14:21Z http://psasir.upm.edu.my/id/eprint/44081/ CO2 adsorption on modified carbon coated monolith: effect of surface modification by using alkaline solutions Hosseini, Soraya Marahel, Ehsan Bayesti, Iman Abbasi, Ali Abdullah, Luqman Chuah Choong, Thomas Shean Yaw A monolithic column was used to study the feasibility of modified carbon-coated monolith for recovery of CO2 from gaseous mixtures (He/CO2) in a variety of operating conditions. Carbon-coated monolith was prepared by dip-coating method and modified by two alkaline solutions, i.e. NH3 and KOH. The surface properties of the carbon-coated monolith were altered by functional groups via KOH and NH3 treatments. The comparative study of CO2 uptake by two different adsorbents, i.e. unmodified and modified carbon-coated monolith, demonstrated that the applied modification process had improved CO2 adsorption. The presence of nitrogen- and oxygen-containing functional groups on the surface of the carbon led to an improved level of microporosity on the synthesized carbon-coated monolith. The physical parameters such as higher surface area, lower pore diameter, and larger micropore volume of modified monoliths indicated direct influence on the adsorbed amount of CO2. In the present study, the Deactivation Model is applied to analyze the breakthrough curves. The adsorption capacity increased with an increase in pressure and concentration, while a reduction of CO2 adsorption capacity was occurred with increase in temperature. Ammonia (NH3) and potassium hydroxide (KOH)-modified carbon-coated monolith showed an increase of approximately 12 and 27% in CO2 adsorption, respectively, as compared to unmodified carbon-coated monolith. Elsevier BV 2015 Article PeerReviewed text en http://psasir.upm.edu.my/id/eprint/44081/1/CO2%20adsorption%20on%20modified%20carbon%20coated%20monolith%20effect%20of%20surface%20modification%20by%20using%20alkaline%20solutions.pdf Hosseini, Soraya and Marahel, Ehsan and Bayesti, Iman and Abbasi, Ali and Abdullah, Luqman Chuah and Choong, Thomas Shean Yaw (2015) CO2 adsorption on modified carbon coated monolith: effect of surface modification by using alkaline solutions. Applied Surface Science, 324. pp. 569-575. ISSN 0169-4332; ESSN: 1873-5584 https://www.sciencedirect.com/science/article/pii/S0169433214022922?via%3Dihub 10.1016/j.apsusc.2014.10.054 |
| spellingShingle | Hosseini, Soraya Marahel, Ehsan Bayesti, Iman Abbasi, Ali Abdullah, Luqman Chuah Choong, Thomas Shean Yaw CO2 adsorption on modified carbon coated monolith: effect of surface modification by using alkaline solutions |
| title | CO2 adsorption on modified carbon coated monolith: effect of surface modification by using alkaline solutions |
| title_full | CO2 adsorption on modified carbon coated monolith: effect of surface modification by using alkaline solutions |
| title_fullStr | CO2 adsorption on modified carbon coated monolith: effect of surface modification by using alkaline solutions |
| title_full_unstemmed | CO2 adsorption on modified carbon coated monolith: effect of surface modification by using alkaline solutions |
| title_short | CO2 adsorption on modified carbon coated monolith: effect of surface modification by using alkaline solutions |
| title_sort | co2 adsorption on modified carbon coated monolith: effect of surface modification by using alkaline solutions |
| url | http://psasir.upm.edu.my/id/eprint/44081/ http://psasir.upm.edu.my/id/eprint/44081/ http://psasir.upm.edu.my/id/eprint/44081/ http://psasir.upm.edu.my/id/eprint/44081/1/CO2%20adsorption%20on%20modified%20carbon%20coated%20monolith%20effect%20of%20surface%20modification%20by%20using%20alkaline%20solutions.pdf |