Preparation of Zn/Al-chitosan Composite for the Selective Adsorption of Methylene Blue Dye in Water

Authors

Risfidian Mohadi, Faculty Mathematics and Natural Sciences, Universitas Sriwijaya, Palembang 30139, Indonesia
Patimah Mega Syah Bahar Nur Siregar, Research Center of Inorganic Materials and Complexes, Universitas Sriwijaya, Palembang 30139, Indonesia
Neza Rahayu Palapa, Research Center of Inorganic Materials and Complexes, Universitas Sriwijaya, Palembang 30139, Indonesia
Aldes Lesbani, Research Center of Inorganic Materials and Complexes, Universitas Sriwijaya, Palembang 30139, IndonesiaFollow

Abstract

Layered double hydroxide (LDHs) are widely used adsorbents for methylene blue removal. However, LDHs have a perishable structure that cannot be used repeatedly. Modifying LDHs with chitosan produces a strong material with a large surface area for methylene blue adsorption. Adsorption conditions were optimized by determining the adsorption isotherms and the adsorbent regeneration process. Results showed that the adsorption process was balanced in 90 min with maximum adsorption capacities of 86.207 mg/g, 35.336 mg/g, and 98.039 mg/g for Zn/Al, chitosan, and Zn/Al-chitosan, respectively. The adsorption in this study followed the Freundlich isotherm model. Regeneration analysis of the adsorbent showed that Zn/Al-chitosan can be used repeatedly in methylene blue adsorption.

Recommended Citation

Mohadi, Risfidian; Siregar, Patimah Mega Syah Bahar Nur; Palapa, Neza Rahayu; and Lesbani, Aldes (2022) "Preparation of Zn/Al-chitosan Composite for the Selective Adsorption of Methylene Blue Dye in Water," Makara Journal of Science: Vol. 26: Iss. 2, Article 7.
DOI: 10.7454/mss.v26i2.1313
Available at: https://scholarhub.ui.ac.id/science/vol26/iss2/7