Adsorbent for resorcinol removal based on cellulose functionalized with magnetic poly(dopamine)

Area of Science:

• Environmental Science
• Materials Science
• Chemistry

Background:

• Phenolic compounds, like resorcinol, are common water pollutants.
• Effective removal of phenols from wastewater is crucial for environmental protection.
• Developing novel adsorbents with high efficiency and recovery is an ongoing challenge.

Purpose of the Study:

• To synthesize a magnetic composite material for resorcinol adsorption.
• To investigate the adsorption behavior and efficiency of the synthesized material.
• To explore the potential of this composite for wastewater treatment.

Main Methods:

• Chemical bonding synthesis of magnetic cellulose-poly(dopamine) (Fe3O4@CMC@PDA).
• Systematic investigation of resorcinol adsorption from aqueous solutions.
• Analysis of adsorption equilibrium using isotherm models (Freundlich).
• Evaluation of the influence of pH, surface charge, and surface area on adsorption.

Main Results:

• Fe3O4@CMC@PDA exhibited high surface area, abundant hydroxyl and amino groups, and magnetic properties.
• Rapid and efficient resorcinol extraction from water via magnetic attraction.
• Adsorption equilibrium followed the Freundlich isotherm model.
• Optimal resorcinol removal was observed in low pH solutions.
• Adsorption performance was strongly correlated with surface charge concentration and specific surface area.

Conclusions:

• Fe3O4@CMC@PDA is a promising adsorbent for resorcinol removal from wastewater.
• The magnetic property facilitates easy separation and recovery of the adsorbent.
• Understanding the factors influencing adsorption can optimize phenol removal processes.
• This composite offers a viable solution for treating phenolic wastewater.