Version 1
: Received: 28 October 2024 / Approved: 29 October 2024 / Online: 29 October 2024 (11:10:19 CET)
How to cite:
Ergović Ravančić, M.; Habuda-Stanić, M. Fluoride Adsorption from Water Using Modified Activated Carbon. Preprints2024, 2024102296. https://doi.org/10.20944/preprints202410.2296.v1
Ergović Ravančić, M.; Habuda-Stanić, M. Fluoride Adsorption from Water Using Modified Activated Carbon. Preprints 2024, 2024102296. https://doi.org/10.20944/preprints202410.2296.v1
Ergović Ravančić, M.; Habuda-Stanić, M. Fluoride Adsorption from Water Using Modified Activated Carbon. Preprints2024, 2024102296. https://doi.org/10.20944/preprints202410.2296.v1
APA Style
Ergović Ravančić, M., & Habuda-Stanić, M. (2024). Fluoride Adsorption from Water Using Modified Activated Carbon. Preprints. https://doi.org/10.20944/preprints202410.2296.v1
Chicago/Turabian Style
Ergović Ravančić, M. and Mirna Habuda-Stanić. 2024 "Fluoride Adsorption from Water Using Modified Activated Carbon" Preprints. https://doi.org/10.20944/preprints202410.2296.v1
Abstract
Water containing fluoride concentrations greater than 1.5 mg/L is a public health problem. Adsorption on activated carbon is one of the most commonly used methods for removing elevated fluoride concentrations in water. This research was tested the parameters of fluoride adsorption on four modified activated carbons with nitric acid and hydrogen peroxide. Adsorption properties includes initial fluoride concentrations (2-40 mg/L), pH (4-9), dosage of activated carbon (2-20 g/L), contact time (15-360 min) and temperature (25-45°C). The research results showed a decrease in the proportion of adsorbed fluorides by increasing their initial concentration, while an increase in temperature had a positive effect on the proportion of removed fluorides. The optimal pH value of adsorption at which the largest amount of fluoride is adsorbed is from 4 to 6. Langmuir, Freundlich, Temkin and Dubinin-Radushkevich isotherms were used to determine the adsorption mechanism. The experimental data showed the best agreement with the Freundlich model at all temperatures, while the pseudo second-order kinetic model best described the adsorption rate. An increase in the adsorption temperature had a positive effect on the adsorption properties of activated carbons for all tested parameters.
Environmental and Earth Sciences, Water Science and Technology
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
