Adsorption and recovery of phosphate from water by amine fiber, effects of co-existing ions and column filtration

Jinshan Wei, Xiaoguang Meng, Xianghua Wen, Yonghui Song

Research output: Contribution to journalArticle

Abstract

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.

Original languageEnglish (US)
Pages (from-to)123-132
Number of pages10
JournalJournal of Environmental Sciences (China)
Volume87
DOIs
StatePublished - Jan 1 2020

Fingerprint

Amines
Phosphates
phosphate
Acrylics
Ions
adsorption
Adsorption
Recovery
ion
Water
Fibers
water
sulfate
calcium
Biological filter beds
effect
fibre
amine
Calcium Sulfate
Hydrochloric Acid

All Science Journal Classification (ASJC) codes

  • Environmental Science(all)
  • Environmental Engineering
  • Environmental Chemistry

Cite this

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abstract = "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.",
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Adsorption and recovery of phosphate from water by amine fiber, effects of co-existing ions and column filtration. / Wei, Jinshan; Meng, Xiaoguang; Wen, Xianghua; Song, Yonghui.

In: Journal of Environmental Sciences (China), Vol. 87, 01.01.2020, p. 123-132.

Research output: Contribution to journalArticle

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