Coconut coir dust as a low cost adsorbent for the removal of cationic dye from aqueous solution
Adsorption of methylene blue from aqueous solution onto coconut coir dust (CCD) a low cost agricultural waste material in a batch process was investigated. Adsorption was studied as a function of amount of adsorbent, pH and concentration with time. It was found that percentage adsorption varied line...
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2016-09-01
|
| Series: | Journal of Saudi Chemical Society |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S1319610312001470 |
| _version_ | 1818483303821344768 |
|---|---|
| author | U.J. Etim S.A. Umoren U.M. Eduok |
| author_facet | U.J. Etim S.A. Umoren U.M. Eduok |
| author_sort | U.J. Etim |
| collection | DOAJ |
| description | Adsorption of methylene blue from aqueous solution onto coconut coir dust (CCD) a low cost agricultural waste material in a batch process was investigated. Adsorption was studied as a function of amount of adsorbent, pH and concentration with time. It was found that percentage adsorption varied linearly with the amount of adsorbent and concentration with time but varies non-linearly with pH. Adsorption equilibrium data were represented by isotherm, kinetics and thermodynamics models. Three isotherm models namely Langmuir, Freundlich and Temkin were tested and adsorption was found to fit well into these models with R2 ⩾ 0.90. The kinetic data were well described by the pseudo-second order kinetic model. The adsorption process was endothermic with a mean change in enthalpy (ΔH) (+17.87 KJ mol−1) and spontaneous with a mean free energy change (ΔG) (−9.69 KJ mol−1). FTIR analyses of the adsorbent suggest that adsorption of the dye was through a chemical interaction of the functional groups on the surface of the adsorbent. |
| first_indexed | 2024-12-10T11:58:35Z |
| format | Article |
| id | doaj.art-11c9f47e0a5841e3be4559dd2ce53515 |
| institution | Directory Open Access Journal |
| issn | 1319-6103 |
| language | English |
| last_indexed | 2024-12-10T11:58:35Z |
| publishDate | 2016-09-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Saudi Chemical Society |
| spelling | doaj.art-11c9f47e0a5841e3be4559dd2ce535152022-12-22T01:49:42ZengElsevierJournal of Saudi Chemical Society1319-61032016-09-0120S1S67S7610.1016/j.jscs.2012.09.014Coconut coir dust as a low cost adsorbent for the removal of cationic dye from aqueous solutionU.J. EtimS.A. UmorenU.M. EduokAdsorption of methylene blue from aqueous solution onto coconut coir dust (CCD) a low cost agricultural waste material in a batch process was investigated. Adsorption was studied as a function of amount of adsorbent, pH and concentration with time. It was found that percentage adsorption varied linearly with the amount of adsorbent and concentration with time but varies non-linearly with pH. Adsorption equilibrium data were represented by isotherm, kinetics and thermodynamics models. Three isotherm models namely Langmuir, Freundlich and Temkin were tested and adsorption was found to fit well into these models with R2 ⩾ 0.90. The kinetic data were well described by the pseudo-second order kinetic model. The adsorption process was endothermic with a mean change in enthalpy (ΔH) (+17.87 KJ mol−1) and spontaneous with a mean free energy change (ΔG) (−9.69 KJ mol−1). FTIR analyses of the adsorbent suggest that adsorption of the dye was through a chemical interaction of the functional groups on the surface of the adsorbent.http://www.sciencedirect.com/science/article/pii/S1319610312001470Coconut coir dustEquilibriumAdsorptionIsothermMethylene blueKinetics |
| spellingShingle | U.J. Etim S.A. Umoren U.M. Eduok Coconut coir dust as a low cost adsorbent for the removal of cationic dye from aqueous solution Journal of Saudi Chemical Society Coconut coir dust Equilibrium Adsorption Isotherm Methylene blue Kinetics |
| title | Coconut coir dust as a low cost adsorbent for the removal of cationic dye from aqueous solution |
| title_full | Coconut coir dust as a low cost adsorbent for the removal of cationic dye from aqueous solution |
| title_fullStr | Coconut coir dust as a low cost adsorbent for the removal of cationic dye from aqueous solution |
| title_full_unstemmed | Coconut coir dust as a low cost adsorbent for the removal of cationic dye from aqueous solution |
| title_short | Coconut coir dust as a low cost adsorbent for the removal of cationic dye from aqueous solution |
| title_sort | coconut coir dust as a low cost adsorbent for the removal of cationic dye from aqueous solution |
| topic | Coconut coir dust Equilibrium Adsorption Isotherm Methylene blue Kinetics |
| url | http://www.sciencedirect.com/science/article/pii/S1319610312001470 |
| work_keys_str_mv | AT ujetim coconutcoirdustasalowcostadsorbentfortheremovalofcationicdyefromaqueoussolution AT saumoren coconutcoirdustasalowcostadsorbentfortheremovalofcationicdyefromaqueoussolution AT umeduok coconutcoirdustasalowcostadsorbentfortheremovalofcationicdyefromaqueoussolution |