Ammonium phosphomolybdate [(NH4)3PMo12O40] an inorganic ion exchanger for environmental application for purification of dye contaminant wastewater

Yellow ammonium phosphomolybdate (YAPM), a waste product of all under graduate (UG) chemistry laboratory classes, has been proved to be an efficient adsorbent for environmental application as a cationic ion exchanger. The water insoluble YAPM selectively removes cationic dye molecules from dye contaminated wastewater. Consequently, dye infested YAPM solid is produced with fascinating color but bears altered band gap energy. Dye contaminated yellow APM is regenerated in air oven from the dye infested YAPM solid powder by heat treatment at similar to 300 degrees C and reused with full potential. So it becomes a solid phase extractant. Robust yellow APM turns to green APM (GAPM) upon UV light exposure because of the hoarded electrons in the basket like Keggin structure of phosphomolybdate (PMo12O40-3) moiety, and thereby the dye exchange capability is improved, admirably. Thus, the remediation of dye contaminated wastewater by YAPM has been found to be fruitful by YAPM and more potential dye remediation by GAPM.

Automated summary

Yellow ammonium phosphomolybdate (YAPM) has been proven to be an efficient cationic ion exchanger for environmental applications, selectively removing cationic dye molecules from contaminated wastewater. Through heat treatment, dye contaminated YAPM can be regenerated and reused, showing great potential as a solid phase extractant. UV light exposure can transform robust yellow APM into green APM (GAPM), enhancing its dye exchange capability for more effective wastewater remediation.