Novel Methods for Orthophosphate Rapid Detection and Adsorption Applications

Résumé :

2-phosphonobutane-1,2,4-tricarboxylic acid (PBTC) is an orthophosphate reagent widely used as a corrosion inhibitor to prevent scale deposits. Monitoring PBTC levels in industrial systems presents significant challenges due to the lack of online or internal methods for control and measurement. While overdose of PBTC, it can lead to unnecessary chemical waste and negatively impact conventional wastewater treatment processes. Thus, the novel strategies for rapid detection and enhanced adsorption have been required. In adsorption, polyethylene terephthalate bottle waste was upcycled into aluminum-based metal-organic frameworks adsorbent, integrating waste management with water purification solutions. Layer-by-layer fabricated magnetic adsorbents further demonstrated structural integrity and efficiency under diverse environmental conditions. For detection, amine-functionalized polystyrene latex nanoparticles were synthesized via emulsifier-free emulsion polymerization. The material enables simple PBTC monitoring through latex agglutination, providing map aggregation domains across varying pH levels. Additionally, electrochemical impedance spectroscopy microsensors, based on molecularly imprinted polymers, offer high sensitivity and selectivity for PBTC detection, offering in situ Lab-on-Chip applications with drop-casting analysis.

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