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Preparation of Biomass-based Mesoporous Carbon with Higher Nitrogen-/Oxygen-chelating Adsorption for Cu(II) Through Microwave Pre-Pyrolysis
Published on: February 12, 2019
Ferrous sulfate adsorption by activated charcoal
P A Chyka1, A Y Butler, M I Herman
1Department of Pharmacy Practice and Pharmacoeconomics, The University of Tennessee, Memphis, USA.
Veterinary and Human Toxicology
|February 24, 2001
Summary
Activated charcoal effectively adsorbs ferrous sulfate, particularly in simulated gastrointestinal fluids at pH 4.5 and 7.5. This suggests activated charcoal could be a viable treatment for acute iron poisoning.
Area of Science:
- Pharmacology
- Toxicology
- Materials Science
Background:
- Activated charcoal is commonly used to treat poisonings.
- Previous research suggests limited adsorption of iron salts by activated charcoal.
- Understanding iron adsorption is crucial for optimizing poisoning treatments.
Purpose of the Study:
- To characterize the adsorptive capacity of activated charcoal for ferrous sulfate.
- To evaluate the effect of pH on iron adsorption by activated charcoal.
- To assess the potential of activated charcoal as a treatment for iron poisoning.
Main Methods:
- Langmuir adsorption isotherms were determined for activated charcoal and ferrous sulfate.
- Experiments were conducted using varying amounts of activated charcoal (20-120 mg) in simulated gastrointestinal fluids (pH 1.5, 4.5, 7.5).
- Iron concentration was measured using atomic absorption spectrophotometry after incubation at 37°C.
Main Results:
- Activated charcoal demonstrated significantly higher adsorptive capacities for ferrous sulfate at pH 4.5 (102.96 mg/g) and pH 7.5 (100.94 mg/g) compared to pH 1.5 (-0.01 mg/g).
- Adsorption was minimal at pH 1.5, indicating minimal iron adsorption in highly acidic environments.
- Higher adsorption occurred at pH levels closer to those found in the gastrointestinal tract where iron is typically absorbed.
Conclusions:
- Activated charcoal effectively adsorbs ferrous sulfate, especially at neutral and slightly acidic pH levels.
- The findings support the potential use of activated charcoal as an effective therapy for acute iron poisoning.
- Further research is warranted to confirm its efficacy in clinical settings.
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