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Trihalomethane removal by activated carbon fiber
T Nakamura1, N Kawasaki, M Araki
1Faculty of Pharmaceutical Sciences, Kinki University, Osaka, Japan. naktak@phar.kindai.ac.jp
Summary
Activated carbon fiber effectively removes trihalomethanes (THMs) from drinking water. Adsorption is enhanced by the adsorbent
Area of Science:
- Environmental Chemistry
- Water Treatment Technologies
Background:
- Trihalomethanes (THMs) are common disinfection byproducts in drinking water.
- Effective removal of THMs is crucial for ensuring water safety.
Purpose of the Study:
- To investigate the adsorption of trihalomethanes onto activated carbon fiber.
- To determine factors influencing THM adsorption efficiency.
Main Methods:
- Adsorption experiments using single-component solutions of trihalomethanes.
- Analysis of adsorbent properties such as surface area, pore volume, and hydrophobicity.
- Correlation of adsorption capacity with adsorbent characteristics and trihalomethane properties.
Main Results:
- Adsorption capacity was not primarily determined by large surface area or pore volume.
- Stronger surface hydrophobicity of activated carbon fiber correlated with higher THM adsorption.
- Brominated trihalomethanes showed greater adsorption than chlorinated trihalomethanes.
- Differences in adsorption are linked to the polarity of trihalomethane molecules.
Conclusions:
- Surface hydrophobicity is the dominant factor in activated carbon fiber's adsorption of trihalomethanes.
- Tailoring adsorbent hydrophobicity can optimize THM removal for safer drinking water.