TY - JOUR
T1 - Adsorption and recovery of phosphate from water by amine fiber, effects of co-existing ions and column filtration
AU - Wei, Jinshan
AU - Meng, Xiaoguang
AU - Wen, Xianghua
AU - Song, Yonghui
N1 - Publisher Copyright:
© 2019
PY - 2020/1
Y1 - 2020/1
N2 - A weak-base adsorption fiber, acrylic amine fiber (AAF), was prepared for removal and recovery of phosphate from water. The adsorption properties of the AAF for phosphate and effects of co-existing ions were investigated using batch and column filtration experiments, scanning electron microscope, and Fourier transform infrared techniques. Experimental results showed that AAF had a high phosphate adsorption capacity of 119 mg/g at pH 7.0. The effects of calcium, sulfate, carbonate, nitrate, and fluoride showed that sulfate and calcium inhibited phosphate adsorption. However, AAF showed higher binding affinity toward phosphate than sulfate. Column filtration results showed that AAF could filter 1420 bed volumes of tap water containing 1.0 mg-P/L of phosphate. The saturated AAF could be regenerated using 0.5 mol/L hydrochloric acid solution and reused. After desorption, phosphate was recovered through precipitation of hydroxyapatite (Ca5(PO4)3OH). The easy of regeneration, good adsorption performance, and the fiber morphology of AAF make it an attractive alternative for phosphate recovery from multiple water sources.
AB - A weak-base adsorption fiber, acrylic amine fiber (AAF), was prepared for removal and recovery of phosphate from water. The adsorption properties of the AAF for phosphate and effects of co-existing ions were investigated using batch and column filtration experiments, scanning electron microscope, and Fourier transform infrared techniques. Experimental results showed that AAF had a high phosphate adsorption capacity of 119 mg/g at pH 7.0. The effects of calcium, sulfate, carbonate, nitrate, and fluoride showed that sulfate and calcium inhibited phosphate adsorption. However, AAF showed higher binding affinity toward phosphate than sulfate. Column filtration results showed that AAF could filter 1420 bed volumes of tap water containing 1.0 mg-P/L of phosphate. The saturated AAF could be regenerated using 0.5 mol/L hydrochloric acid solution and reused. After desorption, phosphate was recovered through precipitation of hydroxyapatite (Ca5(PO4)3OH). The easy of regeneration, good adsorption performance, and the fiber morphology of AAF make it an attractive alternative for phosphate recovery from multiple water sources.
KW - Acrylic amine fiber
KW - Adsorption
KW - Phosphate removal
KW - Phosphorus recovery
KW - Wastewater treatment
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U2 - 10.1016/j.jes.2019.05.009
DO - 10.1016/j.jes.2019.05.009
M3 - Article
C2 - 31791486
AN - SCOPUS:85068026054
SN - 1001-0742
VL - 87
SP - 123
EP - 132
JO - Journal of Environmental Sciences (China)
JF - Journal of Environmental Sciences (China)
ER -