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Evaluation of titanium tetrachloride and polytitanium tetrachloride to remove phosphorus from wastewater
- Source :
- Separation and Purification Technology. 197:197-201
- Publication Year :
- 2018
- Publisher :
- Elsevier BV, 2018.
-
Abstract
- Coagulation of titanium tetrachloride (TiCl4) and polytitanium tetrachloride (PTC) was studied at various conditions in treating wastewater that contained phosphorus (P). Jar-test experiments were performed at various chemical doses (0.02–0.49 mM), alkalinities (50 ≤ AT ≤ 150 mg CaCO3/L of NaHCO3), pH levels (3.0–8.5), and OH/Ti ratio (0.3 ≤ B ≤ 3.0) to determine the conditions at which P (2 mg/L) removal was most efficient. The TiCl4 concentration ([TiCl4]) required to achieve 98–99% P removal was 0.25 mM at 50 mg CaCO3/L, 0.31 mM at 100 mg CaCO3/L, and 0.49 mM at 150 mg CaCO3/L. Response surface analysis predicted that P removal would reach 100% at controlled pH = 3.5 with minimum [TiCl4] = 0.21 mM. PTC removed P most effectively at B = 0.3, and the optimal dose at B = 0.3 was 0.27 mM. Laboratory results and a pilot experiment will help to optimize use of Ti-based coagulants to remediate wastewater that contains P.
- Subjects :
- Pilot experiment
Phosphorus
chemistry.chemical_element
Filtration and Separation
02 engineering and technology
010501 environmental sciences
021001 nanoscience & nanotechnology
Laboratory results
01 natural sciences
Analytical Chemistry
chemistry.chemical_compound
Wastewater
chemistry
Tetrachloride
Titanium tetrachloride
Coagulation (water treatment)
0210 nano-technology
0105 earth and related environmental sciences
Nuclear chemistry
Subjects
Details
- ISSN :
- 13835866
- Volume :
- 197
- Database :
- OpenAIRE
- Journal :
- Separation and Purification Technology
- Accession number :
- edsair.doi...........cd381beb499ae7cddf7a9cbf1accd0ba