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Boron removal and its concentration in aqueous solution through progressive freeze concentration
1a Institute of Environmental Engineering and Management, College of Engineering , National Taipei University of Technology , Taipei , Taiwan , Republic of China.
Environmental Technology
|November 3, 2016
Summary
Progressive freeze concentration effectively removes boron from water. Lower ice advance speeds and higher stirrer speeds enhance boron removal, making it suitable for purifying water and concentrating ions.
Area of Science:
- Environmental Science
- Chemical Engineering
- Water Treatment Technologies
Background:
- Boron contamination in water poses environmental and health risks.
- Effective boron removal methods are crucial for water purification.
- Progressive freeze concentration (PFC) is an emerging separation technique.
Purpose of the Study:
- To investigate the feasibility of PFC for boron removal and concentration.
- To analyze the impact of key parameters on PFC's boron removal efficiency.
- To assess PFC's applicability for both organic and inorganic contaminants.
Main Methods:
- Batch experiments were conducted to study PFC.
- Key parameters investigated: ice front advance speed, stirrer velocity, initial boron concentration.
- Boron concentration in ice and liquid phases was measured.
Main Results:
- Boron removal efficiency improved with slower ice advance speeds.
- Higher stirrer velocities and lower initial boron concentrations increased boron removal.
- Achieved boron concentration below 1 mg/L in ice phase under optimal conditions (ice speed < 1 cm/h, stirrer speed > 0.12 m/s).
- Simultaneous concentration of boron in the liquid phase was observed.
Conclusions:
- Progressive freeze concentration is a viable method for boron removal from aqueous solutions.
- PFC parameters can be optimized for efficient boron separation.
- The technique shows potential for purifying water and concentrating various substances, including inorganic ions.
Keywords:
Progressive freeze concentrationboronboron removaleffective partition constantfreeze concentrationMore Related Videos
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