Dalsup Dalsup, Muhammad Faisal, Azwar Azwar
The use of diatomaceous earth as a heavy metal absorbing material in acid mine drainage (AMD) in mining activities is of particular interest for further investigation. The use of a nanoparticle diatomaceous earth adsorbent is one of the appropriate solutions for dealing with heavy metal adsorption. The purpose of this study was to analyze the ability of diatomaceous earth nanoparticles as an adsorbent for reducing manganese (Mn) heavy metal levels. Synthesis of diatomaceous earth using the sol-gel method to obtain an adsorbent at nanoparticle size was carried out by calcination at a temperature of 600 °C. The adsorption process was treated using the batch method, and the optimization of the manganese (Mn) absorption process was done using the Response Surface Method (RSM) and Central Composite Design (CCD). The results of the kinetics of manganese metal adsorption at a temperature of 600 °C obtained a regression coefficient value of 0.8761 with a first-order rate equation. The results of process optimization using the RSM and CCD design methods obtained the optimum value for adsorption power at a calcination temperature of 600 °C, namely 12.570 with a desirability value of 0.817. © 2025 Author(s).
Master Program at the Chemical Engineering Department, Faculty of Engineering, Universitas Syiah Kuala, Banda Aceh, 23111, Indonesia; Department of Chemical Engineering, Universitas Syiah Kuala, Banda Aceh, 23111, Indonesia
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