An Experimental and Kinetic Study of the Sorption of Carbon Dioxide onto Amine-Treated Oil Fly Ash
A new CO2 adsorbent is produced from waste oil fly ash (OFA). Ammonium hydroxide solution is used to convert OFA to activated carbon. Then, the product is used for the adsorption of CO2 from a nitrogen/carbon dioxide (N2/CO2) gas mixture. The OFA samples are characterized by several techniques. Chem...
Saved in:
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2016-01-01
|
| Series: | Journal of Chemistry |
| Online Access: | http://dx.doi.org/10.1155/2016/6021798 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832568199744323584 |
|---|---|
| author | Mohammed A. Saad Mohammed J. Al-Marri Ali L. Yaumi Ibnelwaleed A. Hussein Reyad Shawabkeh |
| author_facet | Mohammed A. Saad Mohammed J. Al-Marri Ali L. Yaumi Ibnelwaleed A. Hussein Reyad Shawabkeh |
| author_sort | Mohammed A. Saad |
| collection | DOAJ |
| description | A new CO2 adsorbent is produced from waste oil fly ash (OFA). Ammonium hydroxide solution is used to convert OFA to activated carbon. Then, the product is used for the adsorption of CO2 from a nitrogen/carbon dioxide (N2/CO2) gas mixture. The OFA samples are characterized by several techniques. Chemical treatment of OFA considerably changed its surface morphology. In particular, its surface area, as determined by BET measurements, increased from 59 to 318 m2/g. The amine-functionalized ash had a monolayer adsorption capacity of 74.51 mg/g and was obtained at relative pressure, 0.05<p/ps<0.35. A kinetics study showed that the CO2 adsorption capacity of OFA increased with increasing CO2 flow rates and concentrations and decreasing the relative humidity. Unlike physical adsorption, the chemisorption process resulted in increased adsorption capacity with increasing temperatures over the range 0–40°C. We also found that the adsorption process was endothermic (80–173 kJ/mol). The isotherm data for the adsorption process were fitted using different models. The saturation capacity determined from the Sips model, which corresponds to the sum of the saturation capacities of all of the adsorbed layers, was 540.3 mg/g of ash. |
| format | Article |
| id | doaj-art-1c7a13424bd442058dc24b949355cb37 |
| institution | Kabale University |
| issn | 2090-9063 2090-9071 |
| language | English |
| publishDate | 2016-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Journal of Chemistry |
| spelling | doaj-art-1c7a13424bd442058dc24b949355cb372025-02-03T00:59:27ZengWileyJournal of Chemistry2090-90632090-90712016-01-01201610.1155/2016/60217986021798An Experimental and Kinetic Study of the Sorption of Carbon Dioxide onto Amine-Treated Oil Fly AshMohammed A. Saad0Mohammed J. Al-Marri1Ali L. Yaumi2Ibnelwaleed A. Hussein3Reyad Shawabkeh4Department of Chemical Engineering, Qatar University, P.O. Box 2713, Doha, QatarGas Processing Center, Qatar University, P.O. Box 2713, Doha, QatarDepartment of Chemical Engineering, King Fahd University of Petroleum & Minerals, Dhahran 31261, Saudi ArabiaGas Processing Center, Qatar University, P.O. Box 2713, Doha, QatarDepartment of Chemical Engineering, King Fahd University of Petroleum & Minerals, Dhahran 31261, Saudi ArabiaA new CO2 adsorbent is produced from waste oil fly ash (OFA). Ammonium hydroxide solution is used to convert OFA to activated carbon. Then, the product is used for the adsorption of CO2 from a nitrogen/carbon dioxide (N2/CO2) gas mixture. The OFA samples are characterized by several techniques. Chemical treatment of OFA considerably changed its surface morphology. In particular, its surface area, as determined by BET measurements, increased from 59 to 318 m2/g. The amine-functionalized ash had a monolayer adsorption capacity of 74.51 mg/g and was obtained at relative pressure, 0.05<p/ps<0.35. A kinetics study showed that the CO2 adsorption capacity of OFA increased with increasing CO2 flow rates and concentrations and decreasing the relative humidity. Unlike physical adsorption, the chemisorption process resulted in increased adsorption capacity with increasing temperatures over the range 0–40°C. We also found that the adsorption process was endothermic (80–173 kJ/mol). The isotherm data for the adsorption process were fitted using different models. The saturation capacity determined from the Sips model, which corresponds to the sum of the saturation capacities of all of the adsorbed layers, was 540.3 mg/g of ash.http://dx.doi.org/10.1155/2016/6021798 |
| spellingShingle | Mohammed A. Saad Mohammed J. Al-Marri Ali L. Yaumi Ibnelwaleed A. Hussein Reyad Shawabkeh An Experimental and Kinetic Study of the Sorption of Carbon Dioxide onto Amine-Treated Oil Fly Ash Journal of Chemistry |
| title | An Experimental and Kinetic Study of the Sorption of Carbon Dioxide onto Amine-Treated Oil Fly Ash |
| title_full | An Experimental and Kinetic Study of the Sorption of Carbon Dioxide onto Amine-Treated Oil Fly Ash |
| title_fullStr | An Experimental and Kinetic Study of the Sorption of Carbon Dioxide onto Amine-Treated Oil Fly Ash |
| title_full_unstemmed | An Experimental and Kinetic Study of the Sorption of Carbon Dioxide onto Amine-Treated Oil Fly Ash |
| title_short | An Experimental and Kinetic Study of the Sorption of Carbon Dioxide onto Amine-Treated Oil Fly Ash |
| title_sort | experimental and kinetic study of the sorption of carbon dioxide onto amine treated oil fly ash |
| url | http://dx.doi.org/10.1155/2016/6021798 |
| work_keys_str_mv | AT mohammedasaad anexperimentalandkineticstudyofthesorptionofcarbondioxideontoaminetreatedoilflyash AT mohammedjalmarri anexperimentalandkineticstudyofthesorptionofcarbondioxideontoaminetreatedoilflyash AT alilyaumi anexperimentalandkineticstudyofthesorptionofcarbondioxideontoaminetreatedoilflyash AT ibnelwaleedahussein anexperimentalandkineticstudyofthesorptionofcarbondioxideontoaminetreatedoilflyash AT reyadshawabkeh anexperimentalandkineticstudyofthesorptionofcarbondioxideontoaminetreatedoilflyash AT mohammedasaad experimentalandkineticstudyofthesorptionofcarbondioxideontoaminetreatedoilflyash AT mohammedjalmarri experimentalandkineticstudyofthesorptionofcarbondioxideontoaminetreatedoilflyash AT alilyaumi experimentalandkineticstudyofthesorptionofcarbondioxideontoaminetreatedoilflyash AT ibnelwaleedahussein experimentalandkineticstudyofthesorptionofcarbondioxideontoaminetreatedoilflyash AT reyadshawabkeh experimentalandkineticstudyofthesorptionofcarbondioxideontoaminetreatedoilflyash |