Reduction of Fluoride in Water Phase by Micro-Nano Bubble Pretreatment Process
Eun-Sik Kim1, Sharifuzzamanm Md2, Seong-Gyu Seo1
1Department of Environmental System Engineering, Chonnam National University, Yeosu, Jeonnam 59626, Korea.
Journal of Nanoscience and Nanotechnology
|October 27, 2018
Summary
Micro-nano bubble pretreatment effectively removes fluoride from water. Combining poly aluminum chloride (PAC) with A430P polymer achieved superior fluoride removal in treated wastewater. This method enhances aquatic health and environmental safety.
Area of Science:
- Environmental Science
- Water Treatment Technology
- Chemical Engineering
Background:
- Fluoride is crucial for aquatic environments and human health, with optimal water concentrations below 1 mg/L.
- Elevated fluoride levels in water pose risks to ecosystems and public health.
- Effective fluoride removal technologies are essential for maintaining water quality.
Purpose of the Study:
- To investigate the efficacy of micro-nano bubble pretreatment for fluoride ion removal from water.
- To evaluate various coagulation processes and chemical aids for enhanced fluoride and chemical oxygen demand (COD) removal.
- To identify optimal combinations of pretreatment and coagulation for efficient wastewater treatment.
Main Methods:
- Micro-nano bubble pretreatment was applied to water samples.
- pH was controlled using calcium hydroxide (Ca(OH)₂).
- Coagulation processes utilized poly aluminum chloride (PAC), aluminum sulfate (Alum), F900, A-polymer, and A430P polymer.
Main Results:
- The combination of PAC and A430P polymer demonstrated superior fluoride removal in micro-nano bubble pretreated wastewater compared to other combinations.
- The optimal combination for chemical oxygen demand (COD) removal was Alum and A430P polymer, achieving 64.6% efficiency.
- COD removal without pretreatment was 71.4% for fluoride and 57.2% for COD, indicating pretreatment benefits.
Conclusions:
- Micro-nano bubble pretreatment, when combined with specific coagulants like PAC and A430P polymer, significantly enhances fluoride removal.
- The study identified effective strategies for simultaneous fluoride and COD reduction in wastewater.
- This research contributes to developing advanced water treatment solutions for environmental protection.
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