Lehigh University

Chelsey Shepsko

Arup K SenGupta

Michael German

Hang Dong

A method for purifying waste water, and a dual chamber purification system, in which feed water may be passed first through a hybrid anion exchange unit, and subsequently through a weak acid cationic exchange unit. The hybrid anion exchanger may comprise a hybrid sorbent (HAIX-NanoZr) with dual functional sorption sites. The weak acid cationic exchanger may be a fiber having a shell-core physical configuration with relatively short intra-particle diffusion path length so that the ion exchange sites reside predominantly on the periphery. The system may be used to achieve partial desalination or TDS reduction and concurrent removal of target contaminants (e.g., phosphate, hardness). Further, the system may be regenerated using COas the sole regenerant for both the hybrid anion exchanger and the weak acid cationic exchanger, thus producing spent regenerant with no externally added chemicals.

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Englishtown, NJ, United States of America

Chelsey Shepsko