Novel Fe/glass composite adsorbent for As(V) removal

Area of Science:

• Materials Science
• Environmental Chemistry
• Water Treatment

Background:

• Arsenic contamination in water poses significant health risks.
• Developing cost-effective and efficient adsorbents is crucial for arsenic remediation.
• Waste materials offer a sustainable source for adsorbent synthesis.

Purpose of the Study:

• To synthesize a novel adsorbent from waste glass powder for arsenic removal.
• To investigate the surface modification of glass powder through hydrothermal treatment.
• To evaluate the arsenic(V) adsorption performance of the synthesized material.

Main Methods:

• Hydrothermal treatment of waste glass powder (GP) to form Si-O-H groups and increase surface area.
• Loading Fe(III) oxyhydroxide (FeOOH) onto hydrothermally treated glass powder (HGP) via FeCl3 hydrolysis.
• Investigating FeOOH formation conditions.
• Evaluating arsenic(V) removal efficiency under varying conditions.

Main Results:

• Hydrothermal treatment modified the GP surface, creating Si-O-H groups.
• FeOOH was successfully loaded onto the HGP surface.
• The synthesized HGP-FeOOH adsorbent achieved approximately 97% removal of As(V) from a 1 mg/L solution.
• Optimal removal was observed at pH 6 with a 2-hour contact time.

Conclusions:

• Modified waste glass powder serves as an effective adsorbent for arsenic removal.
• The synthesized HGP-FeOOH adsorbent demonstrates high efficiency for As(V) remediation.
• This approach offers a sustainable method for utilizing waste materials in water treatment.