The effect of surfactant on the charge behavior and coagulation of TiO2 nanoparticles suspension

DOI

10.2991/iccte-17.2017.105How to use a DOI?

Keywords

TiO2, Surfactant, Coagulation, SDBS, CTAB.

Abstract

In order to understanding of the fate and transport of TiO2 nanoparticles (Nps) in the water treatment process, this study focus on the particle surface characteristics and coagulation process at different anionic surfactant sodium dodecylbenzene sulfonate (SDBS) and cationic surfactant cetyltrimethylammonium bromide (CTAB) concentration, using aluminum sulfate (AS) as a coagulant. Malvern Zetasizer nano-ZS measure the changes of zeta potential of TiO2 Nps mixture and coagulation of flocs (Alu-TiO2). Jar tests are conducted to evaluate the effect of surfactant on removal efficiency of TiO2 NPs. Experimental results indicated that the adsorption of CTAB on TiO2 Nps resulte in more positively charged surface. SDBS is more easily adsorbed on the surface of positively charged Alu-TiO2 flocs. The presence of SDBS or CTAB have disadvantage of the removal of TiO2 Nps during the coagulation process.

Copyright

© 2017, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Li Wang
AU  - Feng Gong
AU  - Lizhu Zhang
PY  - 2017/07
DA  - 2017/07
TI  - The effect of surfactant on the charge behavior and coagulation of TiO2 nanoparticles suspension
BT  - Proceedings of the 2017 2nd International Conference on Civil, Transportation and Environmental Engineering (ICCTE 2017)
PB  - Atlantis Press
SP  - 597
EP  - 600
SN  - 2352-5401
UR  - https://doi.org/10.2991/iccte-17.2017.105
DO  - 10.2991/iccte-17.2017.105
ID  - Wang2017/07
ER  -