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Published on: February 1, 2022
Adsorption of fluoride from aqueous solution by graphene
Yanhui Li1, Pan Zhang, Qiuju Du
1Laboratory of Fiber Materials and Modern Textile, The Growing Base for State Key Laboratory, Qingdao University, 308 Ningxia Road, Qingdao 266071, China. liyanhui@tsinghua.org.cn
Journal of Colloid and Interface Science
|August 9, 2011
Summary
Graphene effectively removes fluoride from water, demonstrating high adsorption capacity. This study highlights graphene as a promising material for water purification applications.
Area of Science:
- Environmental Science
- Materials Science
- Chemistry
Background:
- Fluoride contamination in aqueous solutions poses environmental and health risks.
- Developing efficient adsorbents for fluoride removal is crucial for water treatment.
Purpose of the Study:
- To investigate the adsorption performance of graphene for fluoride removal from aqueous solutions.
- To evaluate the effects of pH, contact time, and temperature on fluoride adsorption by graphene.
Main Methods:
- A batch adsorption system was employed.
- Adsorption experiments were conducted at varying initial pH, contact times, and temperatures.
- Langmuir isotherm and thermodynamic models were used for data analysis.
Main Results:
- Graphene exhibited a high fluoride adsorption capacity of up to 17.65 mg/g.
- Adsorption was influenced by initial pH, contact time, and temperature.
- The Langmuir model accurately described the adsorption data.
- The adsorption process was found to be spontaneous and endothermic.
Conclusions:
- Graphene is a highly effective adsorbent for removing fluoride from aqueous solutions.
- The adsorption process is favorable under specific conditions and follows Langmuir isotherm behavior.
- Graphene presents a viable solution for addressing fluoride contamination in water.
