Adsorption of Organic Compounds on to Bentonites Modified with Single or Dual Quaternary Ammonium Cations
The adsorption of benzoic acid, hydroquinone and toluene on to bentonites modified with single or dual quaternary ammonium cations was studied. Thus, the mineral surface of the bentonite was modified by replacing the inorganic ions with four quaternary ammonium cations, i.e. tetramethylammonium (TMA...
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
SAGE Publishing
2003-03-01
|
| Series: | Adsorption Science & Technology |
| Online Access: | https://doi.org/10.1260/026361703769013871 |
| _version_ | 1826905367321247744 |
|---|---|
| author | R. Gönülşen N. Yıldız A. Çalımlı |
| author_facet | R. Gönülşen N. Yıldız A. Çalımlı |
| author_sort | R. Gönülşen |
| collection | DOAJ |
| description | The adsorption of benzoic acid, hydroquinone and toluene on to bentonites modified with single or dual quaternary ammonium cations was studied. Thus, the mineral surface of the bentonite was modified by replacing the inorganic ions with four quaternary ammonium cations, i.e. tetramethylammonium (TMA), benzyltriethylammonium (BTEA), hexadecyltrimethylammonium (HDTMA) and octadecyltrimethylammonium (ODTMA). The inorganic cations on the bentonite were exchanged with the quaternary ammonium cations to the respective extent of ca. 35% TMA, 75% BTEA, 83% HDTMA, 90% ODTMA, 35% TMA/54% HDTMA, 35% TMA/58% ODTMA and 75% BTEA/12% HDTMA of the cation-exchange capacity (CEC) of the bentonite, resulting in a change in the surface properties from hydrophilic to organophilic. The experimental results obtained indicated that the adsorption affinity on dual-modified bentonites was generally lower than that on single-modified bentonites. It was concluded that this resulted from two different adsorption mechanisms and the competitive adsorption of binary solutes. |
| first_indexed | 2024-03-07T18:00:53Z |
| format | Article |
| id | doaj.art-a384c30707a54ae98ba2fb30282535a3 |
| institution | Directory Open Access Journal |
| issn | 0263-6174 2048-4038 |
| language | English |
| last_indexed | 2025-02-17T08:28:22Z |
| publishDate | 2003-03-01 |
| publisher | SAGE Publishing |
| record_format | Article |
| series | Adsorption Science & Technology |
| spelling | doaj.art-a384c30707a54ae98ba2fb30282535a32025-01-02T22:37:24ZengSAGE PublishingAdsorption Science & Technology0263-61742048-40382003-03-012110.1260/026361703769013871Adsorption of Organic Compounds on to Bentonites Modified with Single or Dual Quaternary Ammonium CationsR. GönülşenN. YıldızA. ÇalımlıThe adsorption of benzoic acid, hydroquinone and toluene on to bentonites modified with single or dual quaternary ammonium cations was studied. Thus, the mineral surface of the bentonite was modified by replacing the inorganic ions with four quaternary ammonium cations, i.e. tetramethylammonium (TMA), benzyltriethylammonium (BTEA), hexadecyltrimethylammonium (HDTMA) and octadecyltrimethylammonium (ODTMA). The inorganic cations on the bentonite were exchanged with the quaternary ammonium cations to the respective extent of ca. 35% TMA, 75% BTEA, 83% HDTMA, 90% ODTMA, 35% TMA/54% HDTMA, 35% TMA/58% ODTMA and 75% BTEA/12% HDTMA of the cation-exchange capacity (CEC) of the bentonite, resulting in a change in the surface properties from hydrophilic to organophilic. The experimental results obtained indicated that the adsorption affinity on dual-modified bentonites was generally lower than that on single-modified bentonites. It was concluded that this resulted from two different adsorption mechanisms and the competitive adsorption of binary solutes.https://doi.org/10.1260/026361703769013871 |
| spellingShingle | R. Gönülşen N. Yıldız A. Çalımlı Adsorption of Organic Compounds on to Bentonites Modified with Single or Dual Quaternary Ammonium Cations Adsorption Science & Technology |
| title | Adsorption of Organic Compounds on to Bentonites Modified with Single or Dual Quaternary Ammonium Cations |
| title_full | Adsorption of Organic Compounds on to Bentonites Modified with Single or Dual Quaternary Ammonium Cations |
| title_fullStr | Adsorption of Organic Compounds on to Bentonites Modified with Single or Dual Quaternary Ammonium Cations |
| title_full_unstemmed | Adsorption of Organic Compounds on to Bentonites Modified with Single or Dual Quaternary Ammonium Cations |
| title_short | Adsorption of Organic Compounds on to Bentonites Modified with Single or Dual Quaternary Ammonium Cations |
| title_sort | adsorption of organic compounds on to bentonites modified with single or dual quaternary ammonium cations |
| url | https://doi.org/10.1260/026361703769013871 |
| work_keys_str_mv | AT rgonulsen adsorptionoforganiccompoundsontobentonitesmodifiedwithsingleordualquaternaryammoniumcations AT nyıldız adsorptionoforganiccompoundsontobentonitesmodifiedwithsingleordualquaternaryammoniumcations AT acalımlı adsorptionoforganiccompoundsontobentonitesmodifiedwithsingleordualquaternaryammoniumcations |