Experimental design data for the zinc ions adsorption based on mesoporous modified chitosan using central composite...

Area of Science:

• Materials Science
• Environmental Science
• Chemical Engineering

Background:

• Heavy metal contamination in water poses significant environmental and health risks.
• Developing efficient and cost-effective adsorbents is crucial for water purification technologies.
• Silica-based mesoporous materials offer promising properties for adsorption applications.

Purpose of the Study:

• To synthesize and characterize a new magnetic nanoadsorbent for heavy metal removal.
• To investigate the adsorption behavior of Zn²⁺ ions onto the developed Fe₂O₃@SBA-15-CS-AEAPTMS nanoadsorbent.
• To optimize adsorption conditions and understand the underlying adsorption mechanisms.

Main Methods:

• Synthesis of Fe₂O₃@SBA-15-CS-AEAPTMS magnetic nanoadsorbent.
• Characterization using XRD, TEM, FTIR, and BET analysis.
• Optimization of Zn²⁺ adsorption using response surface methodology (central composite design).
• Analysis of adsorption kinetics, isotherms, and thermodynamics.

Main Results:

• The synthesized nanoadsorbent exhibited excellent characteristics for Zn²⁺ removal.
• Adsorption efficiency was enhanced with higher functional group content.
• The adsorption process followed Langmuir isotherm (R² > 0.99, qmax = 107.21 mg/g) and pseudo-second-order kinetics (R² > 0.999).
• Zn²⁺ adsorption was spontaneous, endothermic, and dominated by chemisorption.

Conclusions:

• The Fe₂O₃@SBA-15-CS-AEAPTMS nanoadsorbent is a highly effective material for Zn²⁺ removal from aqueous solutions.
• The study provides insights into optimizing adsorption processes for heavy metal remediation.
• This research contributes to the development of advanced adsorption technologies for water treatment.