Utilization of Yellow Shells (Cypraea moneta) in the Treatment of Cadmium Heavy Metal (Cd) Waste

Noor Isnaini Azkiya; Rosita Dwi Chrisnandari; Wianthi Septia Witasari

doi:10.33795/jtkl.v7i1.327

Authors

Noor Isnaini Azkiya Department of Chemical Engineering, Politeknik Negeri Malang, Jl. Soekarno Hatta No. 9, Malang 65141, Indonesia
Rosita Dwi Chrisnandari Department of Chemical Engineering, Politeknik Negeri Malang, Jl. Soekarno Hatta No. 9, Malang 65141, Indonesia
Wianthi Septia Witasari Department of Chemical Engineering, Politeknik Negeri Malang, Jl. Soekarno Hatta No. 9, Malang 65141, Indonesia

DOI:

https://doi.org/10.33795/jtkl.v7i1.327

Keywords:

adsorption, cadmium, Cypraea moneta, shellfish, waste

Abstract

Cadmium (Cd) metal is a heavy metal that can cause environmental pollution if its levels are above the environmental quality standard value. Generally, industrial wastes such as paper industry waste contain heavy metal Cd with levels reaching 0.026 ppm. Meanwhile, the quality standard for Cd metal in the environment is 0.005 ppm. For this reason, it is necessary to process it to reduce the levels of Cd metal in the waste before being discharged into the environment. One way that can be used to reduce the levels of Cd metal is by adsorption method using Cypraea moneta clamshells containing chitin. This study used variations in the particle size of the shellfish adsorbent of 6 and 12 mesh. In addition, the ratio of the amount of adsorbate and adsorbent (mg:mg) is 1 : 0.5x10⁶; 1 : 1x10⁶; and 1 : 1.5x10⁶. Based on the results obtained, it showed that the use of shellfish as an adsorbent was able to reduce Cd metal content up to 89%.

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