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http://dx.doi.org/10.15681/KSWE.2015.31.6.619

Optimization of TiCl4 Concentration and Initial pH for Phosphorus Removal in Synthetic Wastewater  

Shin, So-Yeun (Department of Environmental Engineering, Kangwon National University)
Kim, Jong-Ho (Department of Applied Chemical Engineering, Chonnam National University)
Ahn, Johng-Hwa (Department of Environmental Engineering, Kangwon National University)
Publication Information
Journal of Korean Society on Water Environment / v.31, no.6, 2015 , pp. 619-624 More about this Journal
Abstract
This study experimentally determined the effect of titanium tetrachloride (TiCl4) concentration ([TiCl4]) (0.25-0.55 mM) and initial pH (3-11) on phosphorus (P) removal in synthetic wastewater (2 mg P/L). The P removal efficiency increased when [TiCl4] increased. The P removal efficiency showed a parabolic trend with an inflection point at pH 7. At the molar ratio of TiCl4 and P>6.2, the P removal efficiency was over 90% and the residual P concentration was less than 0.2 mg/L. Within the design boundaries, the complete P removal could be achieved at 7.0≤initial pH≤8.5 and 0.43≤[TiCl4]≤0.55 mM. The final pH was over 5.8 at initial pH≥7.7 and [TiCl4]≥0.35 mM. The results showed that TiCl4 was effective in P removal in water so that it could be an alternative chemical for P removal.
Keywords
Coagulant; Initial pH; Optimization; Phosphorus; Titanium tetrachloride;
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Times Cited By KSCI : 1  (Citation Analysis)
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