title: Effect of SiO2 nanoparticles on the removal of natural organic matter (NOM) by coagulation.
abstract: In order to evaluate effect of engineered nanoparticles on the removal of natural organic matter (NOM), ENPs water sample (WATERNP), and common water sample (WATERCOMMON) were prepared by mixing the SiO2 nanoparticles (SiO2 NPs, 50 nm) and common SiO2 particles (2 μm) with water from Xiaoqing River. The removal variation, NOM fractionation, flocs properties, and IR spectra were investigated after polyaluminum chloride (PAC) coagulation. The results revealed that although the removal efficiencies of turbidity and NOM from WATERNP were moderately lower than those from WATERCOMMON, the fluorescence intensities of soluble microbial byproduct-like, humic acid-like, and aromatic protein II in coagulated WATERNP were lower than that in coagulated raw water and WATERCOMMON. What's more, flocs of WATERNP showed the smallest size and highest fractal dimension as compared with other water samples, except for those obtained at B = 2.0.
authors.affiliation: Shandong Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Shandong University, Jinan, 250100, People's Republic of China.
authors.forename: Nan
authors.initials: N
authors.lastname: Xue
authors.affiliation: School of Environmental and Safety Engineering, Qingdao University of Science & Technology, Qingdao, 266042, China.
authors.forename: Xue
authors.initials: X
authors.lastname: Wang
authors.affiliation: Shandong Academy of Environmental Science, Jinan, 250013, People's Republic of China.
authors.forename: Furong
authors.initials: F
authors.lastname: Zhang
authors.affiliation: Shandong Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Shandong University, Jinan, 250100, People's Republic of China. wangyan824@sdu.edu.cn.
authors.forename: Yan
authors.initials: Y
authors.lastname: Wang
authors.affiliation: School of Environmental and Safety Engineering, Qingdao University of Science & Technology, Qingdao, 266042, China.
authors.forename: Yongbao
authors.initials: Y
authors.lastname: Chu
authors.affiliation: Shandong Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Shandong University, Jinan, 250100, People's Republic of China.
authors.forename: Ying
authors.initials: Y
authors.lastname: Zheng
mesh_terms: D000536:Aluminum Hydroxide / Q000302:isolation & purification*; D001578:Benzopyrans / Q000302:isolation & purification; D005591:Chemical Fractionation; D006812:Humic Substances / Q000032:analysis; D053758:Nanoparticles / Q000737:chemistry*; D010316:Particle Size; D045483:Rivers; D012822:Silicon Dioxide / Q000737:chemistry*; D014874:Water Pollutants, Chemical / Q000302:isolation & purification*; D018508:Water Purification / Q000379:methods
chemical_list: D001578:Benzopyrans; D006812:Humic Substances; D014874:Water Pollutants, Chemical; C016213:aluminum oxychloride; D000536:Aluminum Hydroxide; D012822:Silicon Dioxide; C005023:fulvic acid
keywords: Coagulation; Natural organic matter; Polyaluminum chloride; SiO2 nanoparticles