Adsorption of Polydisperse Polyvinyl Alcohol Molecules on the Surface of Activated Carbons
The adsorption of polyvinyl alcohol (PVA) on activated carbons was studied in aqueous solutions. Each batch of activated carbon produced was obtained via a definite number of technological operations using wood as the raw material. The adsorption process was studied using a gel chromatography techni...
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| Format: | Article |
| Language: | English |
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SAGE Publishing
2003-06-01
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| Series: | Adsorption Science & Technology |
| Online Access: | https://doi.org/10.1260/026361703769645799 |
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| author | J. Barkauskas A. Vinslovaite |
| author_facet | J. Barkauskas A. Vinslovaite |
| author_sort | J. Barkauskas |
| collection | DOAJ |
| description | The adsorption of polyvinyl alcohol (PVA) on activated carbons was studied in aqueous solutions. Each batch of activated carbon produced was obtained via a definite number of technological operations using wood as the raw material. The adsorption process was studied using a gel chromatography technique with potentiometric titrations being employed for evaluating the chemical composition of the activated carbons produced. The data obtained from the various activated carbon samples were compared to ascertain the adsorption mechanism. It was concluded that water molecules had a limited influence on the competitive process of polymer adsorption. A rather pronounced negative correlation between the number of phenol functional groups and PVA adsorption capacity was observed, indicating that these groups hindered the adsorption process. Assumptions concerning the role of phenol functional groups were made, taking into account not only the surface heterogeneity but also changes in the electron density of the graphene layers in the carbon substrate. |
| format | Article |
| id | doaj-art-5e5c07a2a1a144b483f3a976ef97fbeb |
| institution | Kabale University |
| issn | 0263-6174 2048-4038 |
| language | English |
| publishDate | 2003-06-01 |
| publisher | SAGE Publishing |
| record_format | Article |
| series | Adsorption Science & Technology |
| spelling | doaj-art-5e5c07a2a1a144b483f3a976ef97fbeb2025-01-03T00:12:16ZengSAGE PublishingAdsorption Science & Technology0263-61742048-40382003-06-012110.1260/026361703769645799Adsorption of Polydisperse Polyvinyl Alcohol Molecules on the Surface of Activated CarbonsJ. Barkauskas0A. Vinslovaite1 Department of General and Inorganic Chemistry, Vilnius University, Universiteto 3, LT-2734 Vilnius, Lithuania Department of Chemistry, Vilnius Pedagogical University, Studentu 39, LT-2034 Vilnius, LithuaniaThe adsorption of polyvinyl alcohol (PVA) on activated carbons was studied in aqueous solutions. Each batch of activated carbon produced was obtained via a definite number of technological operations using wood as the raw material. The adsorption process was studied using a gel chromatography technique with potentiometric titrations being employed for evaluating the chemical composition of the activated carbons produced. The data obtained from the various activated carbon samples were compared to ascertain the adsorption mechanism. It was concluded that water molecules had a limited influence on the competitive process of polymer adsorption. A rather pronounced negative correlation between the number of phenol functional groups and PVA adsorption capacity was observed, indicating that these groups hindered the adsorption process. Assumptions concerning the role of phenol functional groups were made, taking into account not only the surface heterogeneity but also changes in the electron density of the graphene layers in the carbon substrate.https://doi.org/10.1260/026361703769645799 |
| spellingShingle | J. Barkauskas A. Vinslovaite Adsorption of Polydisperse Polyvinyl Alcohol Molecules on the Surface of Activated Carbons Adsorption Science & Technology |
| title | Adsorption of Polydisperse Polyvinyl Alcohol Molecules on the Surface of Activated Carbons |
| title_full | Adsorption of Polydisperse Polyvinyl Alcohol Molecules on the Surface of Activated Carbons |
| title_fullStr | Adsorption of Polydisperse Polyvinyl Alcohol Molecules on the Surface of Activated Carbons |
| title_full_unstemmed | Adsorption of Polydisperse Polyvinyl Alcohol Molecules on the Surface of Activated Carbons |
| title_short | Adsorption of Polydisperse Polyvinyl Alcohol Molecules on the Surface of Activated Carbons |
| title_sort | adsorption of polydisperse polyvinyl alcohol molecules on the surface of activated carbons |
| url | https://doi.org/10.1260/026361703769645799 |
| work_keys_str_mv | AT jbarkauskas adsorptionofpolydispersepolyvinylalcoholmoleculesonthesurfaceofactivatedcarbons AT avinslovaite adsorptionofpolydispersepolyvinylalcoholmoleculesonthesurfaceofactivatedcarbons |