Removal of the Reactive Blue 21 and Direct Red 80 dyes using seed residue of Mabea fistulifera Mart. as biosorbent
Residues of Mabea fistulifera Mart. were used in this study as a bioadsorbent for the removal of the Reactive Blue 21 (RB 21) and Direct Red 80 (DR 80) dyes from aqueous solutions and samples of real effluents enriched with these dyes. The influence of pH, kinetic, and adsorptive parameters for the...
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Instituto de Pesquisas Ambientais em Bacias Hidrográficas (IPABHi)
2012-04-01
|
| Series: | Revista Ambiente & Água |
| Subjects: | |
| Online Access: | http://www.ambi-agua.net/seer/index.php/ambi-agua/article/view/854 |
| _version_ | 1818270440024440832 |
|---|---|
| author | Efraim Lázaro Reis Cesar Reis Carlos Juliano da Silva Guilherme Costa Moreira Julieta de Jesus da Silveira Neta |
| author_facet | Efraim Lázaro Reis Cesar Reis Carlos Juliano da Silva Guilherme Costa Moreira Julieta de Jesus da Silveira Neta |
| author_sort | Efraim Lázaro Reis |
| collection | DOAJ |
| description | Residues of Mabea fistulifera Mart. were used in this study as a bioadsorbent for the removal of the Reactive Blue 21 (RB 21) and Direct Red 80 (DR 80) dyes from aqueous solutions and samples of real effluents enriched with these dyes. The influence of pH, kinetic, and adsorptive parameters for the removal these dyes were investigated by conducting a series of batch experiments. The maximum adsorption using this bioadsorbent was observed at pH = 2.0 for both dyes. The time of adsorption equilibrium was established at 300 minutes for DR 80 and 120 minutes for RB 21. The Langmuir model stood out because it described the behavior of the sorptive system with higher fidelity than the Freundlich model showing the coefficient of determination (R2) above 0.98. It was possible to obtain the maximum adsorption capacity of the bioadsorbent, for the Direct Red 80 and Reactive Blue 21 dyes, using the Langmuir Isotherm; these values were determined as 4.92 mg g-1 and 11.13 mg g-1, respectively. The pseudo-second order kinetic model best described the adsorption process of the RB 21 dye by the bioadsorbent, however, the intra-particle diffusion is also involved in the mechanism of adsorption. The Morris and Weber diffusion model suggested that the intra-particle diffusion is prevalent throughout the process of adsorption for the DR 80 dye. The bioadsorbent was employed on real textile effluent samples enriched with aqueous solutions of these dyes after the adsorptive conditions were optimized; 85 % RB 21 and 94 % DR 80 removal rates were obtained from the effluent’s matrix. |
| first_indexed | 2024-12-12T21:10:18Z |
| format | Article |
| id | doaj.art-df75656359474fb7b74d62f12f995a5d |
| institution | Directory Open Access Journal |
| issn | 1980-993X |
| language | English |
| last_indexed | 2024-12-12T21:10:18Z |
| publishDate | 2012-04-01 |
| publisher | Instituto de Pesquisas Ambientais em Bacias Hidrográficas (IPABHi) |
| record_format | Article |
| series | Revista Ambiente & Água |
| spelling | doaj.art-df75656359474fb7b74d62f12f995a5d2022-12-22T00:11:55ZengInstituto de Pesquisas Ambientais em Bacias Hidrográficas (IPABHi)Revista Ambiente & Água1980-993X2012-04-017110411910.4136/ambi-agua.854Removal of the Reactive Blue 21 and Direct Red 80 dyes using seed residue of Mabea fistulifera Mart. as biosorbentEfraim Lázaro ReisCesar ReisCarlos Juliano da SilvaGuilherme Costa MoreiraJulieta de Jesus da Silveira NetaResidues of Mabea fistulifera Mart. were used in this study as a bioadsorbent for the removal of the Reactive Blue 21 (RB 21) and Direct Red 80 (DR 80) dyes from aqueous solutions and samples of real effluents enriched with these dyes. The influence of pH, kinetic, and adsorptive parameters for the removal these dyes were investigated by conducting a series of batch experiments. The maximum adsorption using this bioadsorbent was observed at pH = 2.0 for both dyes. The time of adsorption equilibrium was established at 300 minutes for DR 80 and 120 minutes for RB 21. The Langmuir model stood out because it described the behavior of the sorptive system with higher fidelity than the Freundlich model showing the coefficient of determination (R2) above 0.98. It was possible to obtain the maximum adsorption capacity of the bioadsorbent, for the Direct Red 80 and Reactive Blue 21 dyes, using the Langmuir Isotherm; these values were determined as 4.92 mg g-1 and 11.13 mg g-1, respectively. The pseudo-second order kinetic model best described the adsorption process of the RB 21 dye by the bioadsorbent, however, the intra-particle diffusion is also involved in the mechanism of adsorption. The Morris and Weber diffusion model suggested that the intra-particle diffusion is prevalent throughout the process of adsorption for the DR 80 dye. The bioadsorbent was employed on real textile effluent samples enriched with aqueous solutions of these dyes after the adsorptive conditions were optimized; 85 % RB 21 and 94 % DR 80 removal rates were obtained from the effluent’s matrix.http://www.ambi-agua.net/seer/index.php/ambi-agua/article/view/854adsorptionMabea fistulifera Mart.biosorbentdye |
| spellingShingle | Efraim Lázaro Reis Cesar Reis Carlos Juliano da Silva Guilherme Costa Moreira Julieta de Jesus da Silveira Neta Removal of the Reactive Blue 21 and Direct Red 80 dyes using seed residue of Mabea fistulifera Mart. as biosorbent Revista Ambiente & Água adsorption Mabea fistulifera Mart. biosorbent dye |
| title | Removal of the Reactive Blue 21 and Direct Red 80 dyes using seed residue of Mabea fistulifera Mart. as biosorbent |
| title_full | Removal of the Reactive Blue 21 and Direct Red 80 dyes using seed residue of Mabea fistulifera Mart. as biosorbent |
| title_fullStr | Removal of the Reactive Blue 21 and Direct Red 80 dyes using seed residue of Mabea fistulifera Mart. as biosorbent |
| title_full_unstemmed | Removal of the Reactive Blue 21 and Direct Red 80 dyes using seed residue of Mabea fistulifera Mart. as biosorbent |
| title_short | Removal of the Reactive Blue 21 and Direct Red 80 dyes using seed residue of Mabea fistulifera Mart. as biosorbent |
| title_sort | removal of the reactive blue 21 and direct red 80 dyes using seed residue of mabea fistulifera mart as biosorbent |
| topic | adsorption Mabea fistulifera Mart. biosorbent dye |
| url | http://www.ambi-agua.net/seer/index.php/ambi-agua/article/view/854 |
| work_keys_str_mv | AT efraimlazaroreis removalofthereactiveblue21anddirectred80dyesusingseedresidueofmabeafistuliferamartasbiosorbent AT cesarreis removalofthereactiveblue21anddirectred80dyesusingseedresidueofmabeafistuliferamartasbiosorbent AT carlosjulianodasilva removalofthereactiveblue21anddirectred80dyesusingseedresidueofmabeafistuliferamartasbiosorbent AT guilhermecostamoreira removalofthereactiveblue21anddirectred80dyesusingseedresidueofmabeafistuliferamartasbiosorbent AT julietadejesusdasilveiraneta removalofthereactiveblue21anddirectred80dyesusingseedresidueofmabeafistuliferamartasbiosorbent |