Removal of silver nanoparticles by coagulation processes

	Removal of silver nanoparticles by coagulation processes
	Qian Suna ; Yan Lia ; Ting Tang ; Zhihua Yuan ; Chang-Ping Yu
刊名	Journal of Hazardous Materials
	2013-10-15
卷号	261 期号:/页码:414-420
中文摘要	Commercial use of silver nanoparticles (AgNPs) will lead to a potential route for human exposure via potable water. Coagulation followed by sedimentation, as a conventional technique in the drinking water treatment facilities, may become an important barrier to prevent human from AgNP exposures. This study investigated the removal of AgNP suspensions by four regular coagulants. In the aluminum sulfate and ferric chloride coagulation systems, the water parameters slightly affected the AgNP removal. However, in the poly aluminum chloride and polyferric sulfate coagulation systems, the optimal removal efficiencies were achieved at pH 7.5, while higher or lower of pH could reduce the AgNP removal. Besides, the increasing natural organic matter (NOM) would reduce the AgNP removal, while Ca²⁺ and suspended solids concentrations would also affect the AgNP removal. In addition, results from the transmission electron microscopy and X-ray diffraction showed AgNPs or silver-containing nanoparticles were adsorbed onto the flocs. Finally, natural water samples were used to validate AgNP removal by coagulation. This study suggests that in the case of release of AgNPs into the source water, the traditional water treatment process, coagulation/sedimentation, can remove AgNPs and minimize the silver ion concentration under the well-optimized conditions.
收录类别	SCI
公开日期	2013-09-10
内容类型	期刊论文
源URL	[http://124.16.167.195/handle/335003/1226]
专题	城市环境研究所_环境生物技术研究组_期刊论文
推荐引用方式 GB/T 7714	Qian Suna,Yan Lia,Ting Tang,et al. Removal of silver nanoparticles by coagulation processes[J]. Journal of Hazardous Materials,2013,261(/):414-420.
APA	Qian Suna,Yan Lia,Ting Tang,Zhihua Yuan,&Chang-Ping Yu.(2013).Removal of silver nanoparticles by coagulation processes.Journal of Hazardous Materials,261(/),414-420.
MLA	Qian Suna,et al."Removal of silver nanoparticles by coagulation processes".Journal of Hazardous Materials 261./(2013):414-420.