Effect of manure colloid on stability and transport of titanium dioxide
Abstract
This study was to investigate the effect of different manure colloids on the stability and transport of TiO2 NPs. Manure was used in fields as a common organic fertilizer. Different manure colloids were selected to study their effects on the aggregation and transport of nTiO2 at neutral pH conditions. The absorbance and particle size of the nTiO2 suspension at a certain ionic strength and manure colloid concentration were measured to determine the stability and aggregation of the nTiO2 particles at pH 7. Column experiments were performed to examine colloidal transport in quartz sand under water condition similar to those used in stability tests. The interaction energy among the nTiO2 particles and between nTiO2 particle and quartz sand were calculated using the classical DLVO theory to elucidate the underlying mechanisms involved at pH 7. The results showed that manure colloids can promote the dispersion and transport of TiO2 NPs under different conditions.
- Publication:
-
EGU General Assembly Conference Abstracts
- Pub Date:
- May 2020
- DOI:
- 10.5194/egusphere-egu2020-12759
- Bibcode:
- 2020EGUGA..2212759S