Adsorption of Cu(II) Metal Ions Using Matoa (Pometia Pinnata) Shell Immobilized with Silica Gel

Authors

Desy Kurniawati, Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Negeri Padang, Padang, IndonesiaFollow
Popi Patricia, Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Negeri Padang, Padang, IndonesiaFollow
Putri Ramadhani, Research Center for Chemistry, National Research and Innovation Agency (NRIA-BRIN), Jakarta 10340 IndonesiaFollow
Rahadian Zainul, Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Negeri Padang, Padang, IndonesiaFollow
Budhi Oktavia, Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Negeri Padang, Padang, IndonesiaFollow
Reka Kartika, Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Negeri Padang, Padang, IndonesiaFollow

Abstract

The Industrial Revolution, along with the rapid increase in population, has significantly contributed to the intensification of environmental challenges, mostly the contamination of aquatic ecosystems by heavy metals. One metal that is dangerous for the environment and human health is copper (Cu). The threshold for Cu(II) allowed in water is 0.2 mg L^–1. One method to overcome this metal ion pollution is by biosorption using biological material adsorbents. Matoa shell, utilized as a biosorbent, has demonstrated its ability to effectively bind heavy metal ions through its functional groups, which facilitate the formation of complexes with these ions. Biosorbent immobilized using silica can provide increased functional group reactivity and bond resistance. This research uses a batch method by studying several variations of adsorption optimization parameters. The results of each variation of the adsorption parameters showed that the optimum state of adsorption of Cu(II) metal ions was obtained at pH 6 and a concentration of 200 mg L^–1 with an adsorption capacity of 13.13 mg g^–1. The research results show that immobilizing matoa shell with silica gel can be a low-cost and effective adsorbent in removing Cu(II) metal ions.

Keywords

Biosorption, Copper, Immobilization, Matoa shell, Metal ion, Silica gel

Subject Area

Chemistry

Article Type

Article

First Page

4044

Last Page

4053

Creative Commons License

This work is licensed under a Creative Commons Attribution 4.0 International License.

How to Cite this Article

Kurniawati, Desy; Patricia, Popi; Ramadhani, Putri; Zainul, Rahadian; Oktavia, Budhi; and Kartika, Reka (2025) "Adsorption of Cu(II) Metal Ions Using Matoa (Pometia Pinnata) Shell Immobilized with Silica Gel," Baghdad Science Journal: Vol. 22: Iss. 12, Article 11.
DOI: https://doi.org/10.21123/2411-7986.5162