Biomimetic fat cell (BFC) modification and for lindane removal from aqueous solution

Area of Science:

• Environmental Science
• Materials Science
• Chemical Engineering

Background:

• Biomimetic fat cells (BFC) are effective for hydrophobic organic contaminant (HOC) removal.
• Improving the regeneration ability of BFC is crucial for sustainable HOC remediation.
• Existing methods for HOC removal often face challenges with regeneration efficiency.

Purpose of the Study:

• To enhance the regeneration capacity of biomimetic fat cells (BFC) for improved HOC removal.
• To investigate the efficacy of modified biomimetic fat cells (MBFC) in removing lindane.
• To compare the performance and regeneration of MBFC with BFC and powder activated carbon (PAC).

Main Methods:

• Modification of BFC using 1,3,5-benzenetricarboxyl trichloride and piperazine to create MBFC.
• Evaluation of lindane removal efficiency by MBFC at various initial concentrations and doses.
• Assessment of MBFC regeneration and reuse capacity over multiple cycles.
• Comparison of MBFC performance against BFC and PAC.

Main Results:

• MBFC exhibited high lindane removal efficiency, comparable to BFC and PAC (97.68% for MBFC vs. 96.65% for BFC and 98.36% for PAC at 7 mg/L lindane).
• MBFC demonstrated superior performance to PAC at doses below 10 mg/L, achieving 96.8% removal at 5 mg/L.
• MBFC maintained over 95% lindane removal for the first 6 reuse cycles and retained 80% removal after 9 regeneration cycles.
• MBFC showed a significant advantage in regeneration compared to BFC.

Conclusions:

• MBFC presents a promising, regenerable material for effective lindane and potentially other HOC removal.
• The enhanced regeneration capability of MBFC addresses a key limitation of previous BFC applications.
• Lindane removal by MBFC occurs through bioaccumulation (main pathway) and adsorption, similar to BFC.