Removal of Iron and Manganese in Acid Mine Drainage Using Natural Zeolite

Abstract:

The environmental problem that often occurs in coal mining is acid mine drainage which can pose a serious threat to human health, animals and ecological systems. Acid mine drainage contains heavy metal contaminants such as iron and manganese. The purpose of this study was to determine the adsorption equilibrium carried out using natural zeolite adsorbents type mordenite from Klaten, Central Java. The application of natural zeolite with a volume of 100 mL synthetic acid mine drainage with concentrations of Fe 41.97 mg/L, Mn 21.75 mg/L and variations in dose of natural zeolite (2, 4, 6, 8, and 10 grams). The highest percent removal was at a dose of 10 grams of zeolite resulted in % removal of 97.94 % for Fe and 67.81 % for Mn. The results obtained using Langmuir and Freundlich adsorption isotherms. The results followed the Freundlich isotherm model with an adsorption parameters K_f = 0.427 mg/g, R² = 0.991, n = 1.610 Fe metal and Mn metal adsorption parameters are K_f = 0.006 mg/g, R² = 0.9971, and n = 0.578

• Periodical: Key Engineering Materials (Volume 920)
• Pages: 81-87
• DOI: https://doi.org/10.4028/p-0c392g
• Online since: May 2022
• Authors: Sri Rahayu Widyaningrum*, Sarto Sarto, Agus Prasetya
• Keywords: Acid Mine Drainage, Freundlich Isotherm, Langmuir Isotherm, Natural Zeolite

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