Effect of pH and coexisting anions on removal of phosphate from aqueous solutions by inorganic-based mesostructures

Jae Woo Choi, Yong Soo Choi, Seok Won Hong, Dong Ju Kim, Sang-Hyup Lee

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

This study investigated the effect of pH and the presence of coexisting (competitive) anions on the removal of phosphate by titanium mesostructures synthesized using do- or hexadecyltrimethyl-ammonium bromide. To address these research objectives, experiments were conducted (1) under controlled initial pH values (2 to10); and (2) through injection of nitrate, fluoride, chloride, or sulfate anions into a phosphate solution. Based on the experimental results, an initial of pH of 2 was found to be optimal for use of titanium mesostructures. The presence of fluoride anions in solution significantly decreased the removal efficiency of phosphate removal (3.56% at 3.95 mg/g). However, the addition of nitrate, chloride, and sulfate anions did not affect phosphate removal.

Original languageEnglish
Pages (from-to)596-604
Number of pages9
JournalWater Environment Research
Volume84
Issue number7
DOIs
Publication statusPublished - 2012 Jul 1

Keywords

  • Coexisting ion
  • Mesostructure
  • pH
  • Phosphate
  • Titanium

ASJC Scopus subject areas

  • Environmental Chemistry
  • Water Science and Technology

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