Thermodynamics and Kinetics of Inhibition of Aluminum in Hydrochloric Acid by Date Palm Leaf Extract
The corrosion behavior of commercial aluminum in HCl was investigated by gravimetric method in absence and presence of date palm leaf extract (DPLE) as inhibitor. Corrosion rates in absence of extract ranged from 2.4-8.0 mg/cm2/h in the temperature range 20- 50ºC but decreased down to 0.30-2.6 mg/cm...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Joint Coordination Centre of the World Bank assisted National Agricultural Research Programme (NARP)
2014-11-01
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| Series: | Journal of Applied Sciences and Environmental Management |
| Online Access: | https://www.ajol.info/index.php/jasem/article/view/109924 |
| _version_ | 1797227919970402304 |
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| author | AM Al-Haj-Ali NA Jarrah ND Mu'Azu RO Rihan |
| author_facet | AM Al-Haj-Ali NA Jarrah ND Mu'Azu RO Rihan |
| author_sort | AM Al-Haj-Ali |
| collection | DOAJ |
| description | The corrosion behavior of commercial aluminum in HCl was investigated by gravimetric method in absence and presence of date palm leaf extract (DPLE) as inhibitor. Corrosion rates in absence of extract ranged from 2.4-8.0 mg/cm2/h in the temperature range 20- 50ºC but decreased down to 0.30-2.6 mg/cm2/h in presence of the inhibitor. Hot-water extract of date palm leaves has shown inhibition efficiency (IE) of 40- 88%at the tested conditions. IE was found to increase with increasing inhibitor concentration from 0.2 to 0.6 g/L and decrease as temperature increased. Data showed that Langmuir adsorption isotherm represents surface coverage versus extract concentration data indicating that inhibition is due to monolayer adsorption of extract components on aluminum surface. Low activation energy and enthalpy values support physical adsorption mechanism. SEM-EDS microanalysis of aluminum surface supported the inhibitive effect of the extract at the metal surface.© JASEM |
| first_indexed | 2024-04-24T14:48:27Z |
| format | Article |
| id | doaj.art-b61fe5c494a9472d82e84580a80c30c4 |
| institution | Directory Open Access Journal |
| issn | 2659-1502 2659-1499 |
| language | English |
| last_indexed | 2024-04-24T14:48:27Z |
| publishDate | 2014-11-01 |
| publisher | Joint Coordination Centre of the World Bank assisted National Agricultural Research Programme (NARP) |
| record_format | Article |
| series | Journal of Applied Sciences and Environmental Management |
| spelling | doaj.art-b61fe5c494a9472d82e84580a80c30c42024-04-02T19:53:28ZengJoint Coordination Centre of the World Bank assisted National Agricultural Research Programme (NARP)Journal of Applied Sciences and Environmental Management2659-15022659-14992014-11-0118310.4314/jasem.v18i3.23Thermodynamics and Kinetics of Inhibition of Aluminum in Hydrochloric Acid by Date Palm Leaf ExtractAM Al-Haj-AliNA JarrahND Mu'AzuRO RihanThe corrosion behavior of commercial aluminum in HCl was investigated by gravimetric method in absence and presence of date palm leaf extract (DPLE) as inhibitor. Corrosion rates in absence of extract ranged from 2.4-8.0 mg/cm2/h in the temperature range 20- 50ºC but decreased down to 0.30-2.6 mg/cm2/h in presence of the inhibitor. Hot-water extract of date palm leaves has shown inhibition efficiency (IE) of 40- 88%at the tested conditions. IE was found to increase with increasing inhibitor concentration from 0.2 to 0.6 g/L and decrease as temperature increased. Data showed that Langmuir adsorption isotherm represents surface coverage versus extract concentration data indicating that inhibition is due to monolayer adsorption of extract components on aluminum surface. Low activation energy and enthalpy values support physical adsorption mechanism. SEM-EDS microanalysis of aluminum surface supported the inhibitive effect of the extract at the metal surface.© JASEMhttps://www.ajol.info/index.php/jasem/article/view/109924 |
| spellingShingle | AM Al-Haj-Ali NA Jarrah ND Mu'Azu RO Rihan Thermodynamics and Kinetics of Inhibition of Aluminum in Hydrochloric Acid by Date Palm Leaf Extract Journal of Applied Sciences and Environmental Management |
| title | Thermodynamics and Kinetics of Inhibition of Aluminum in Hydrochloric Acid by Date Palm Leaf Extract |
| title_full | Thermodynamics and Kinetics of Inhibition of Aluminum in Hydrochloric Acid by Date Palm Leaf Extract |
| title_fullStr | Thermodynamics and Kinetics of Inhibition of Aluminum in Hydrochloric Acid by Date Palm Leaf Extract |
| title_full_unstemmed | Thermodynamics and Kinetics of Inhibition of Aluminum in Hydrochloric Acid by Date Palm Leaf Extract |
| title_short | Thermodynamics and Kinetics of Inhibition of Aluminum in Hydrochloric Acid by Date Palm Leaf Extract |
| title_sort | thermodynamics and kinetics of inhibition of aluminum in hydrochloric acid by date palm leaf extract |
| url | https://www.ajol.info/index.php/jasem/article/view/109924 |
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