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Flotation removal of As(V) onto goethite
K A Matis1, A I Zouboulis, F B Malamas
1Chemical Technology Division, Chemistry Department, Aristotle University, GR-54006 Thessaloniki, Greece. kamatis@chem.auth.gr
Environmental Pollution (Barking, Essex : 1987)
|January 1, 1997
Summary
Synthetic goethite effectively removes toxic arsenic oxyanions from water. Dispersed-air flotation then efficiently separates the arsenic-loaded adsorbent, offering a promising solution for water purification.
Area of Science:
- Environmental Chemistry
- Water Treatment Technologies
- Materials Science
Background:
- Arsenic oxyanions are priority pollutants in aqueous environments.
- Effective removal and separation of arsenic from water are critical challenges.
- Synthetic goethite is a viable inorganic adsorbent for pollutant remediation.
Purpose of the Study:
- To investigate the removal of arsenic oxyanions from dilute solutions using synthetic goethite.
- To evaluate the efficacy of flotation as a solid/liquid separation method for arsenic-loaded goethite.
- To identify key parameters influencing the combined arsenic removal and separation process.
Main Methods:
- Sorption of arsenic oxyanions onto synthetic goethite.
- Dispersed-air flotation for solid/liquid separation.
- Analysis of process parameters affecting arsenic removal and adsorbent separation.
Main Results:
- Promising arsenic removal from dilute aqueous solutions was achieved using goethite.
- Flotation effectively separated the arsenic-loaded goethite particles.
- The combined process yielded a foam concentrate of arsenic-loaded goethite.
Conclusions:
- The combined sorption and flotation process is effective for arsenic removal and adsorbent separation.
- Synthetic goethite and dispersed-air flotation offer a viable approach for water purification.
- Further studies on process parameters can optimize arsenic remediation efficiency.