Removal of the Textile Dye Indanthrene Olive Green from Aqueous Solution Using Chitosan
The kinetics and equilibrium of the adsorption of Indanthrene Olive Green (IOG) from aqueous solution onto chitosan have been investigated. The chitosan was characterised in terms of its average degree of de-acetylation (DD) and by XRD, TGA/DTG, IR, SEM and specific BET surface area methods. Batch a...
Saved in:
| Main Authors: | , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
SAGE Publishing
2009-12-01
|
| Series: | Adsorption Science & Technology |
| Online Access: | https://doi.org/10.1260/0263-6174.27.10.947 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1841561862301286400 |
|---|---|
| author | José Alberto P. Chaves Lane Aparecida A. Santana Mário S. Schultz Hildo Antônio S. Silva Rosiane S. Penha Adriana P. Vieira Antônio G. de Souza Cícero Wellington B. Bezerra |
| author_facet | José Alberto P. Chaves Lane Aparecida A. Santana Mário S. Schultz Hildo Antônio S. Silva Rosiane S. Penha Adriana P. Vieira Antônio G. de Souza Cícero Wellington B. Bezerra |
| author_sort | José Alberto P. Chaves |
| collection | DOAJ |
| description | The kinetics and equilibrium of the adsorption of Indanthrene Olive Green (IOG) from aqueous solution onto chitosan have been investigated. The chitosan was characterised in terms of its average degree of de-acetylation (DD) and by XRD, TGA/DTG, IR, SEM and specific BET surface area methods. Batch adsorptions experiments were carried out at different pH values and dye concentrations. It was found that the adsorption process was favoured by acidic pH conditions (4.0–6.0). The adsorption followed second-order rate kinetics and the experimental equilibrium data followed the Langmuir isotherm, thereby suggesting that chemisorption might be the major adsorption mode. Such adsorption also occurred on chitosan fibres, although to a significantly lower extent than on crushed chitosan. The corresponding thermodynamic parameters (ΔG 0 , ΔH 0 and ΔS 0 ) were calculated. The positive values obtained for ΔH 0 (161.7 kJ/mol) and ΔS 0 [559.9 J/(mol K)] suggest that the adsorption process was endothermic, with the randomness of the system increasing during the adsorption process. A simplified adsorption model has also been proposed. |
| format | Article |
| id | doaj-art-8430a60d51704673a92d8f5101b3f533 |
| institution | Kabale University |
| issn | 0263-6174 2048-4038 |
| language | English |
| publishDate | 2009-12-01 |
| publisher | SAGE Publishing |
| record_format | Article |
| series | Adsorption Science & Technology |
| spelling | doaj-art-8430a60d51704673a92d8f5101b3f5332025-01-03T01:23:05ZengSAGE PublishingAdsorption Science & Technology0263-61742048-40382009-12-012710.1260/0263-6174.27.10.947Removal of the Textile Dye Indanthrene Olive Green from Aqueous Solution Using ChitosanJosé Alberto P. Chaves0Lane Aparecida A. Santana1Mário S. Schultz2Hildo Antônio S. Silva3Rosiane S. Penha4Adriana P. Vieira5Antônio G. de Souza6Cícero Wellington B. Bezerra7 Colégio Universitário, Universidade Federal do Maranhão, 65080-040, São Luís, MA, Brazil Departamento de Química/CCET, Universidade Federal do Maranhão, 65080-040, São Luís, MA, Brazil Núcleo de Pesquisas Ecológicas de Macaé, Universidade Federal do Rio de Janeiro, Macaé, RJ, Brazil Departamento de Química/CCET, Universidade Federal do Maranhão, 65080-040, São Luís, MA, Brazil Departamento de Química/CCET, Universidade Federal do Maranhão, 65080-040, São Luís, MA, Brazil Departamento de Química/CCET, Universidade Federal do Maranhão, 65080-040, São Luís, MA, Brazil Departamento de Química/CCEN, Universidade Federal da Paraíba, João Pessoa, PB, Brazil Departamento de Química/CCET, Universidade Federal do Maranhão, 65080-040, São Luís, MA, BrazilThe kinetics and equilibrium of the adsorption of Indanthrene Olive Green (IOG) from aqueous solution onto chitosan have been investigated. The chitosan was characterised in terms of its average degree of de-acetylation (DD) and by XRD, TGA/DTG, IR, SEM and specific BET surface area methods. Batch adsorptions experiments were carried out at different pH values and dye concentrations. It was found that the adsorption process was favoured by acidic pH conditions (4.0–6.0). The adsorption followed second-order rate kinetics and the experimental equilibrium data followed the Langmuir isotherm, thereby suggesting that chemisorption might be the major adsorption mode. Such adsorption also occurred on chitosan fibres, although to a significantly lower extent than on crushed chitosan. The corresponding thermodynamic parameters (ΔG 0 , ΔH 0 and ΔS 0 ) were calculated. The positive values obtained for ΔH 0 (161.7 kJ/mol) and ΔS 0 [559.9 J/(mol K)] suggest that the adsorption process was endothermic, with the randomness of the system increasing during the adsorption process. A simplified adsorption model has also been proposed.https://doi.org/10.1260/0263-6174.27.10.947 |
| spellingShingle | José Alberto P. Chaves Lane Aparecida A. Santana Mário S. Schultz Hildo Antônio S. Silva Rosiane S. Penha Adriana P. Vieira Antônio G. de Souza Cícero Wellington B. Bezerra Removal of the Textile Dye Indanthrene Olive Green from Aqueous Solution Using Chitosan Adsorption Science & Technology |
| title | Removal of the Textile Dye Indanthrene Olive Green from Aqueous Solution Using Chitosan |
| title_full | Removal of the Textile Dye Indanthrene Olive Green from Aqueous Solution Using Chitosan |
| title_fullStr | Removal of the Textile Dye Indanthrene Olive Green from Aqueous Solution Using Chitosan |
| title_full_unstemmed | Removal of the Textile Dye Indanthrene Olive Green from Aqueous Solution Using Chitosan |
| title_short | Removal of the Textile Dye Indanthrene Olive Green from Aqueous Solution Using Chitosan |
| title_sort | removal of the textile dye indanthrene olive green from aqueous solution using chitosan |
| url | https://doi.org/10.1260/0263-6174.27.10.947 |
| work_keys_str_mv | AT josealbertopchaves removalofthetextiledyeindanthreneolivegreenfromaqueoussolutionusingchitosan AT laneaparecidaasantana removalofthetextiledyeindanthreneolivegreenfromaqueoussolutionusingchitosan AT mariosschultz removalofthetextiledyeindanthreneolivegreenfromaqueoussolutionusingchitosan AT hildoantoniossilva removalofthetextiledyeindanthreneolivegreenfromaqueoussolutionusingchitosan AT rosianespenha removalofthetextiledyeindanthreneolivegreenfromaqueoussolutionusingchitosan AT adrianapvieira removalofthetextiledyeindanthreneolivegreenfromaqueoussolutionusingchitosan AT antoniogdesouza removalofthetextiledyeindanthreneolivegreenfromaqueoussolutionusingchitosan AT cicerowellingtonbbezerra removalofthetextiledyeindanthreneolivegreenfromaqueoussolutionusingchitosan |