| Title |
Methylene Blue Removal from Aqueous Solution Using Calcium Alginate and Hydroxypropyl Cellulose based Hydrogel |
|
Authors |
Guerrero, Rodel D.; Daguman, Karen Claire M.; Niez, Ruz Leine G.; Ochigue, Princess Claire D.; and Ursos, Quint B. |
|
Publication date |
2024/07/04 |
|
Conference |
2024 7th International Conference on Green Energy and Environment Engineering |
| Abstract |
The removal of methylene blue dye from wastewater is a major challenge in the field of water pollution. Various techniques are available, however adsorption using adsorbents has been found out to be one of the most simple and effective. In this study, the effectiveness of calcium alginate blended with hydroxypropyl cellulose (CA-HPC) hydrogel beads in adsorbing methylene blue dye was investigated. The effect of various parameters such as contact time, methylene blue solution鈥檚 pH, and initial concentration were studied. It also determined the desorption profile and reusability of CA-HPC adsorbent beads employed in the removal of methylene blue from aqueous solution. After 120 minutes of contact time, results showed that the CA-HPC adsorbent beads had the greatest adsorption capacity and highest dye removal occurred at pH 7. Desorption efficiency is considerable for HCl and H2SO4 as eluents at various cycles, while varying the desorption contact time has no effect on the amount of methylene blue desorbed. However, it does affect the structure of the beads, resulting in altered adsorption-desorption performance in subsequent cycles.
H2SO4 adsorption efficiency is substantially lower than when HCl is employed as an eluent. The results further indicated that the nonlinear pseudo-second order kinetic model fitted well with the adsorption data, which exhibits chemical adsorption. |
| Index terms / Keywords |
Sodium Alginate, Hydroxypropyl Cellulose, Methylene Blue, Dye, Adsorption, Desorption |
Mindanao State
University - Iligan Institute of Technology