Research Article
The Application of Carbon from Discarded Langsat Fruit Peel to Adsorb Copper and Manganese from Acid Mine Drainage
@INPROCEEDINGS{10.4108/eai.2-11-2023.2348004, author={Lailan Ni`mah and Sri Rachmania Juliastuti and Mahfud Mahfud}, title={The Application of Carbon from Discarded Langsat Fruit Peel to Adsorb Copper and Manganese from Acid Mine Drainage}, proceedings={Proceedings of the 1st International Conference on Environmental Science, Development, and Management, ICESDM 2023, 2 November 2023, Banjarmasin, South Kalimantan, Indonesia}, publisher={EAI}, proceedings_a={ICESDM}, year={2024}, month={8}, keywords={acid mine drainage activated carbon process of adsorption use of langsat fruit peel presence of metal substances}, doi={10.4108/eai.2-11-2023.2348004} }- Lailan Ni`mah
Sri Rachmania Juliastuti
Mahfud Mahfud
Year: 2024
The Application of Carbon from Discarded Langsat Fruit Peel to Adsorb Copper and Manganese from Acid Mine Drainage
ICESDM
EAI
DOI: 10.4108/eai.2-11-2023.2348004
Abstract
The study aimed to explore the practicality of utilizing agricultural waste, specifi-cally langsat fruit peel (Lansium domesticum cortex), as an economical sorbent, namely activated carbon, for the removal of copper (Cu) and manganese (Mn) from acid mine drainage. Additionally, it sought to assess the adsorption behavior through isothermal modeling. Prior to activation, the langsat fruit peel underwent charring at 300°C for 2 hours. Activated carbon was produced from langsat fruit peel through chemical activation using 20% H3PO4 and 20% NH4OH. The SEM-EDX analysis revealed a significant carbon content of 78.62% when H3PO4 was employed for activation, and this process resulted in larger and clean-er pore structures compared to NH4OH activation. The BJH adsorp-tion average pore diameter (4V/A) indicated a mesoporous scale size, measuring at 31.31399 nm. In terms of its efficacy in adsorbing metals from acid mine drainage, the most favorable results were observed when using 4 grams of acti-vated carbon, achieving a removal rate of 91.42% for Mn and 15.74% for Cu. To model the adsorption process, both Langmuir and Freundlich isotherm equations were applied. The data analysis revealed that the Langmuir model closely matched the isotherm curve, suggesting monolayer adsorption. Furthermore, the linear re-gression coefficient for the Langmuir model approached 1, indicating a strong fit to the data.
