Effects of Humic Acid on Surface Characteristics and Hydrodynamic Properties of Alum-TiO2 NPs Flocs

Feng Gong; Li Zhu Zhang; Li Wang; A Jing Peng

doi:10.4028/www.scientific.net/AMR.955-959.3414

Paper Titles

Treatment of Rural Domestic Sewage by Solar Ozonic Ecological Sewage Treatment Plant
p.3393

Design of a Four-Effect Desalination Demonstration Plant Using Waste Heat from a Diesel Engine
p.3400

Intelligent Irrigation Remote Control System Based on Internet of Things
p.3404

Comparison on Permanganate and Ozone as Pre-Oxidation Agents
p.3408

Effects of Humic Acid on Surface Characteristics and Hydrodynamic Properties of Alum-TiO₂ NPs Flocs
p.3414

A Process Integration Approach to Water Conservation of a Coal to Methanol Plant Water System
p.3418

Study on the Relationship between Canal System Conveyance Efficiency and Basic Physical Parameters of Gravity Irrigation Districts
p.3422

Evaluation Research of Rural Potable Water Supply Project Construction in Shaoxing
p.3427

The Damage Detection of Pressure Pipe Based on the Statistical Pattern Recognition Theory
p.3432

HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 955-959Effects of Humic Acid on Surface Characteristics...

Effects of Humic Acid on Surface Characteristics and Hydrodynamic Properties of Alum-TiO₂ NPs Flocs

Abstract:

In order to understanding of the fate and transport of TiO₂ nanoparticles (NPs) in the water treatment process, this study focused on the particle surface characteristics and hydrodynamic properties at different humic acid (HA) concentration, using aluminum sulfate (AS) as a coagulant. The changes of zeta potential of humic acid capped TiO₂ NPs and flocs were measured by Malvern Zetasizer nanoZS. The surface functional group of flocs was investigated using FT-IR spectra. The growth velocity of alum-TiO₂ NPs flocs were determined using a small-angle light scattering technique during the coagulation process.Experimental results indicated that the zeta potential of alum-TiO₂ NPs flocs surface after adsorption of humic acid was related with humic acid concentration. Adsorption of humic acid resulted in more negative electrophoresis on the surface. Size and growth velocity of alum-TiO₂ NPs flocs were estimated at different humic acid concentration. It was found that the flocs growed were faster in the presence of humic acid, while humic acid had adverse influences on the growth of alum-TiO₂ NPs flocs.

You might also be interested in these eBooks

Advances in Environmental Technologies III

View Preview

Info:

Periodical:

Advanced Materials Research (Volumes 955-959)

Pages:

3414-3417

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.955-959.3414

Citation:

Cite this paper

Online since:

June 2014

Authors:

Feng Gong, Li Zhu Zhang, Li Wang, A Jing Peng

Keywords:

Coagulation, Flocs, Humic Acid (HA), TiO₂

Export:

RIS, BibTeX

Price:

Permissions CCC:

Request Permissions

Permissions PLS:

Request Permissions

Сopyright:

Citation:

References

[1] Chen, X. B., Mao, S. S. Titanium Dioxide Nanomaterials: Synthesis, Properties, Modifications, and Applications. Chem Rev. 2007, 107(7), 2891-2959.

DOI: 10.1021/cr0500535

Google Scholar

[2] Gong, F., Zhang, L. Z., Wang, L. Impact of Humic Acid on the Charge Behavior and Coagulation of TiO2 Nanoparticles Suspension. Advanced Materials Research. 2013, 726, 2384-2388.

DOI: 10.4028/www.scientific.net/amr.726-731.2384

Google Scholar

[3] Zhong, R. S., Zhang, X. H., Xiao, F. et al. Effects of humic acid on physical and hydrodynamic properties of kaolin flocs by particle image velocimetry. Water Research. 2011, 45(13), 3981-3990.

DOI: 10.1016/j.watres.2011.05.006

Google Scholar

[4] Zhu, Z., Li, T., Lu, J. J. et al. Characterization of kaolin flocs formed by polyacrylamide as flocculation aids. International Journal of mineral processing. 2009, 91(3), 94-99.

DOI: 10.1016/j.minpro.2009.01.003

Google Scholar