Examination of the Effectiveness of Physical and Chemical Activation of Natural Bentonite for the Removal of Heavy Metal Ions from Aqueous Solutions
The ability of physically and chemically activated bentonite to adsorb copper and nickel ions from aqueous solutions was examined under various experimental conditions. Physically activated bentonite was obtained by thermal treatment of the initial material in an oven at 700°C (T-bentonite), while c...
Saved in:
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
SAGE Publishing
2002-03-01
|
| Series: | Adsorption Science & Technology |
| Online Access: | https://doi.org/10.1260/026361702320360577 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1841561850871808000 |
|---|---|
| author | Fawzi Banat Sameer Al-Asheh Leena Abu-Aitah |
| author_facet | Fawzi Banat Sameer Al-Asheh Leena Abu-Aitah |
| author_sort | Fawzi Banat |
| collection | DOAJ |
| description | The ability of physically and chemically activated bentonite to adsorb copper and nickel ions from aqueous solutions was examined under various experimental conditions. Physically activated bentonite was obtained by thermal treatment of the initial material in an oven at 700°C (T-bentonite), while chemically activated bentonite was obtained in two ways, either by treatment of the initial material with sodium dodecyl sulphate (SDS) as an anionic surfactant to give SDS-bentonite or with aluminium hydroxypolycation as a pillaring agent to give Al-bentonite. Batch adsorption tests were undertaken to study the removal of Cu 2+ and Ni 2+ ions from aqueous solutions using the above-mentioned types of activated bentonite. The adsorption capacity of the bentonites towards both Cu 2+ and Ni 2+ ions followed the order: Al-bentonite > SDS-bentonite > T-bentonite > natural bentonite. The initial metal concentration, solution pH, temperature and salinity of the solution affected the adsorption capacity towards both metal ions. The uptake of Cu 2+ ions increased with an increase in temperature (25–45°C) as well as with an increase in the initial pH of the solution (3–5). The uptake of Cu 2+ and Ni 2+ ions decreased significantly with an increase in the NaCl and KCl concentrations present in the aqueous solution. Sulphuric acid of 0.1 M concentration was found to be an effective desorbent for bentonite laden with heavy metals. |
| format | Article |
| id | doaj-art-4f4a2cc75479459d99af09c078379327 |
| institution | Kabale University |
| issn | 0263-6174 2048-4038 |
| language | English |
| publishDate | 2002-03-01 |
| publisher | SAGE Publishing |
| record_format | Article |
| series | Adsorption Science & Technology |
| spelling | doaj-art-4f4a2cc75479459d99af09c0783793272025-01-03T01:23:08ZengSAGE PublishingAdsorption Science & Technology0263-61742048-40382002-03-012010.1260/026361702320360577Examination of the Effectiveness of Physical and Chemical Activation of Natural Bentonite for the Removal of Heavy Metal Ions from Aqueous SolutionsFawzi BanatSameer Al-AshehLeena Abu-AitahThe ability of physically and chemically activated bentonite to adsorb copper and nickel ions from aqueous solutions was examined under various experimental conditions. Physically activated bentonite was obtained by thermal treatment of the initial material in an oven at 700°C (T-bentonite), while chemically activated bentonite was obtained in two ways, either by treatment of the initial material with sodium dodecyl sulphate (SDS) as an anionic surfactant to give SDS-bentonite or with aluminium hydroxypolycation as a pillaring agent to give Al-bentonite. Batch adsorption tests were undertaken to study the removal of Cu 2+ and Ni 2+ ions from aqueous solutions using the above-mentioned types of activated bentonite. The adsorption capacity of the bentonites towards both Cu 2+ and Ni 2+ ions followed the order: Al-bentonite > SDS-bentonite > T-bentonite > natural bentonite. The initial metal concentration, solution pH, temperature and salinity of the solution affected the adsorption capacity towards both metal ions. The uptake of Cu 2+ ions increased with an increase in temperature (25–45°C) as well as with an increase in the initial pH of the solution (3–5). The uptake of Cu 2+ and Ni 2+ ions decreased significantly with an increase in the NaCl and KCl concentrations present in the aqueous solution. Sulphuric acid of 0.1 M concentration was found to be an effective desorbent for bentonite laden with heavy metals.https://doi.org/10.1260/026361702320360577 |
| spellingShingle | Fawzi Banat Sameer Al-Asheh Leena Abu-Aitah Examination of the Effectiveness of Physical and Chemical Activation of Natural Bentonite for the Removal of Heavy Metal Ions from Aqueous Solutions Adsorption Science & Technology |
| title | Examination of the Effectiveness of Physical and Chemical Activation of Natural Bentonite for the Removal of Heavy Metal Ions from Aqueous Solutions |
| title_full | Examination of the Effectiveness of Physical and Chemical Activation of Natural Bentonite for the Removal of Heavy Metal Ions from Aqueous Solutions |
| title_fullStr | Examination of the Effectiveness of Physical and Chemical Activation of Natural Bentonite for the Removal of Heavy Metal Ions from Aqueous Solutions |
| title_full_unstemmed | Examination of the Effectiveness of Physical and Chemical Activation of Natural Bentonite for the Removal of Heavy Metal Ions from Aqueous Solutions |
| title_short | Examination of the Effectiveness of Physical and Chemical Activation of Natural Bentonite for the Removal of Heavy Metal Ions from Aqueous Solutions |
| title_sort | examination of the effectiveness of physical and chemical activation of natural bentonite for the removal of heavy metal ions from aqueous solutions |
| url | https://doi.org/10.1260/026361702320360577 |
| work_keys_str_mv | AT fawzibanat examinationoftheeffectivenessofphysicalandchemicalactivationofnaturalbentonitefortheremovalofheavymetalionsfromaqueoussolutions AT sameeralasheh examinationoftheeffectivenessofphysicalandchemicalactivationofnaturalbentonitefortheremovalofheavymetalionsfromaqueoussolutions AT leenaabuaitah examinationoftheeffectivenessofphysicalandchemicalactivationofnaturalbentonitefortheremovalofheavymetalionsfromaqueoussolutions |