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- Title
Synthesis of titanate nanoparticles in low temperature hydrolysis and adsorption of arsenate (V) and fluoride.
- Authors
Deng, Hui; Zhang, Kezheng; Wang, Xiaoning
- Abstract
In this work, anatase titanium dioxide (TiO2) with surface area (167 m2/g) and pore size diameters (17.8 nm) was synthesized by low temperature one-step hydrolysis technique, and its adsorption abilities to arsenate and fluoride, the severe poisonous inorganic contamination in aqueous solution, were evaluated. TiO2prepared at hydrolysis temperature of 80°C and 0.2 mol/L Ti(SO4)2concentration was optimum to remove As (V) and F−. Batch experiments showed that the adsorption of As (V) was more favored in the range of pH 2.0–8.0, while the uptake of F−was preferred only at pH 3.8. The maximum uptake calculated by Langmuir equation for As (V) and F−was 49.28 mg/g (pH 5.0) and 32.15 mg/g (pH 3.8), respectively. Ionic strength hardly has any effect on As (V) and F−removal. As (V) and F−kinetics study indicated that both the adsorption processes occurred rapidly; more than 82.6% of As (V) and 78.5% of F−could be adsorbed on TiO2in the first 100 min, but adsorption equilibrium was not obtained until 10 h. Interference studies on the effects of,,, andillustrated that As (V) and F−sorption were drastically influenced by.
- Subjects
TITANIUM dioxide nanoparticles; CHEMICAL synthesis; HYDROLYSIS; LOW temperatures; ADSORPTION (Chemistry); FLUORIDES; ARSENATES; INDUSTRIAL contamination
- Publication
Desalination & Water Treatment, 2016, Vol 57, Issue 20, p9409
- ISSN
1944-3994
- Publication type
Article
- DOI
10.1080/19443994.2015.1030707