TY - JOUR
T1 - Phosphate removal from urine using hybrid anion exchange resin
AU - Sendrowski, Alicia
AU - Boyer, Treavor H.
N1 - Funding Information:
This publication is based upon work supported by NSF CAREER grant number CBET-1150790 . Any opinions, findings, conclusions or recommendations expressed in this publication are those of the authors and do not necessarily reflect the views of the National Science Foundation.
PY - 2013/8/1
Y1 - 2013/8/1
N2 - Urine source separation has been proposed as a more sustainable approach to wastewater management than treating combined wastewater streams. One such benefit of urine source separation is nutrient recovery, which has primarily focused on struvite precipitation for recovery of phosphorus. There is no previous research investigating phosphorus recovery from human urine by ion-exchange. Accordingly, the goal of this research was to provide an improved understanding of phosphate removal by ion-exchange using a hybrid anion exchange (HAIX) resin. The specific objectives of this research were to evaluate phosphate removal using HAIX resin in fresh urine and hydrolyzed urine in terms of (1) kinetic tests, (2) equilibrium tests, (3) sorption models, (4) competition among sulfate, chloride, and phosphate, and (5) pharmaceutical co-removal. Batch experiments were conducted using different compositions of synthetic urine. HAIX resin consisted of a strong-base anion exchange resin impregnated with hydrated ferric oxide nanoparticles. The major results of phosphate removal from urine using HAIX resin were rapid removal in 5. min or less, high removal up to 97%, similar ion-exchange behavior in fresh urine and hydrolyzed urine, no affect by sulfate on phosphate removal, and co-removal of pharmaceutical and phosphate.
AB - Urine source separation has been proposed as a more sustainable approach to wastewater management than treating combined wastewater streams. One such benefit of urine source separation is nutrient recovery, which has primarily focused on struvite precipitation for recovery of phosphorus. There is no previous research investigating phosphorus recovery from human urine by ion-exchange. Accordingly, the goal of this research was to provide an improved understanding of phosphate removal by ion-exchange using a hybrid anion exchange (HAIX) resin. The specific objectives of this research were to evaluate phosphate removal using HAIX resin in fresh urine and hydrolyzed urine in terms of (1) kinetic tests, (2) equilibrium tests, (3) sorption models, (4) competition among sulfate, chloride, and phosphate, and (5) pharmaceutical co-removal. Batch experiments were conducted using different compositions of synthetic urine. HAIX resin consisted of a strong-base anion exchange resin impregnated with hydrated ferric oxide nanoparticles. The major results of phosphate removal from urine using HAIX resin were rapid removal in 5. min or less, high removal up to 97%, similar ion-exchange behavior in fresh urine and hydrolyzed urine, no affect by sulfate on phosphate removal, and co-removal of pharmaceutical and phosphate.
KW - Diclofenac
KW - Hydrated ferric oxide
KW - Ion-exchange
KW - Nutrient recovery
KW - Phosphorus
KW - Urine source separation
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U2 - 10.1016/j.desal.2013.05.014
DO - 10.1016/j.desal.2013.05.014
M3 - Article
AN - SCOPUS:84879186588
SN - 0011-9164
VL - 322
SP - 104
EP - 112
JO - Desalination
JF - Desalination
ER -