Highly efficient dye decontamination via microbial salecan polysaccharide-based gels.

Area of Science:

• Materials Science
• Environmental Science
• Biotechnology

Background:

• Developing effective and economical wastewater treatment solutions is crucial for environmental protection.
• Dye contamination from industrial processes poses significant environmental challenges.
• Microbial polysaccharides offer potential as sustainable adsorbents.

Purpose of the Study:

• To fabricate a low-cost, recyclable bio-adsorbent from salecan for methyl violet (MV) removal.
• To investigate the properties and adsorption performance of the salecan-based hydrogel.
• To evaluate the potential of salecan hydrogels for practical dye wastewater treatment.

Main Methods:

• Fabrication of salecan-based hydrogels with tunable properties.
• Characterization of hydrogel properties (thermal stability, microarchitecture, mechanical strength, water uptake).
• Adsorption experiments to determine MV removal efficiency, kinetics, and isotherm models.

Main Results:

• Successfully fabricated a low-cost, recyclable salecan-based hydrogel adsorbent.
• Hydrogel properties were tunable by adjusting salecan concentration.
• Adsorption followed pseudo-second-order kinetics and Freundlich isotherm, with a maximum capacity of 178.9 mg/g.
• Demonstrated good reversibility in adsorption-desorption cycles.

Conclusions:

• Salecan-based hydrogels are effective and tunable bio-adsorbents for methyl violet removal.
• The material exhibits high adsorption capacity and recyclability, suitable for dye wastewater treatment.
• This study highlights the potential of microbial polysaccharides as sustainable materials for environmental remediation.