Effect of pH and Coexisting Anions on Removal of Phosphate from Aqueous Solutions by Inorganic‐Based Mesostructures
2012; Wiley; Volume: 84; Issue: 7 Linguagem: Inglês
10.2175/106143012x13373575830755
ISSN1554-7531
AutoresJae‐Woo Choi, Yong‐Soo Choi, Seok Won Hong, Dong‐Ju Kim, Sang‐Hyup Lee,
Tópico(s)Adsorption and biosorption for pollutant removal
ResumoThis 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 hexadecyltrimethylammonium 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.
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