期刊
CHEMOSPHERE
卷 93, 期 4, 页码 619-625出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.chemosphere.2013.06.010
关键词
Silver nanoparticles; Disinfectants; Dissolved silver; Reaction kinetics
资金
- Special Program for Key Basic Research of the Ministry of Science and Technology, China [2010CB434802]
- Xiamen Science and Technology Planning Project [3502Z20102017]
- Ningbo Major Science and Technology Planning Project [2012C5011]
- Hundred Talents Program of the Chinese Academy of Sciences
This study investigated the dissolution, aggregation, and reaction kinetics of silver nanoparticles (AgNPs) with the three types of water disinfectants (ultraviolet, sodium hypochlorite, and ozone) under the different conditions of pH, ionic strength, or humic acid (HA). The physicochemical changes of AgNPs were measured by using UV-Vis spectroscopy, transmission electron microscopy, and inductively coupled plasma optical emission spectrometer. The results showed that when AgNPs contacted the disinfectants, oxidative dissolution was the primary reaction. In addition, the reaction kinetics studies revealed that the reaction rate of AgNPs with disinfectants was significantly influenced by different disinfectants along with different pH and the presence of sodium nitrate and HA. Our research demonstrated the potential effect of disinfectants on AgNPs, which will improve our understanding of the fate of AgNPs in the disinfection processes in the water and wastewater treatment plant. (C) 2013 Elsevier Ltd. All rights reserved.
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