Transport of cerium oxide nanoparticles in saturated silica media: influences of operational parameters and aqueous chemical conditions.
This paper aimed to investigate the influences of operational parameters and aqueous chemical conditions on transport behaviors of cerium oxides nanoparticles (CeO2-NPs) in saturated silica media. Results indicated that increasing rates of attachment efficiency (α) were related with cationic types, and critical deposition concentration (CDC) for divalent cation (Ca2+and Mg2+) were more than 31-fold of that for monovalent cation (Na+and K+). Increase or reduction of electrolyte pH could both promote the mobility of CeO2-NPs in glass beads, while influence was more evident at alkaline conditions. α increased linearly with NPs concentrations, while decreased linearly with flow velocity in the column, and effects were related with electrolyte contents. Presence of surfactants could sharply decreased α, and SDS was more effective to facilitate CeO2-NPs transport than Triton X-100. With DOMs concentrations increasing, α firstly kept constant, then sharply declined, and finally reduced very slowly. The influence of DOMs on NPs deposition was in order of SA > HA > TA >  BSA. Overall, this study revealed that aqueous chemical conditions was crucial to NPs transport in porous media, and would provide significant information for our understanding on the fate and transport of nanoparticles in natural environment.
State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, No73, Huanghe Road, Nangang District, Harbin 150090, China.|Center for the Environmental Implications of Nano Technology, Duke University, Durham, North Carolina 27708, United States.
Zhaohan
Z
Zhang
State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, No73, Huanghe Road, Nangang District, Harbin 150090, China.
Peng
P
Gao
State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, No73, Huanghe Road, Nangang District, Harbin 150090, China.
Ye
Y
Qiu
State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, No73, Huanghe Road, Nangang District, Harbin 150090, China.
Guohong
G
Liu
State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, No73, Huanghe Road, Nangang District, Harbin 150090, China.
Yujie
Y
Feng
Center for the Environmental Implications of Nano Technology, Duke University, Durham, North Carolina 27708, United States.
Mark
M
Wiesner
Environ Sci Technol. 2014 Jan 21;48(2):1280-9
24372151
Environ Health Perspect. 2011 Mar;119(3):a120-5
21356630
Environ Sci Technol. 2011 Apr 1;45(7):2777-82
21405081
J Nanosci Nanotechnol. 2010 May;10(5):3453-8
20358977
Water Res. 2011 Jan;45(2):839-51
20947120
Environ Pollut. 2015 Aug;203:122-9
25875163
Environ Sci Technol. 2013 Dec 17;47(24):14034-43
24251816
J Photochem Photobiol B. 2015 Apr;145:48-59
25768267
Sci Total Environ. 2015 Sep 15;527-528:420-8
25981940
Langmuir. 2005 Aug 2;21(16):7491-500
16042484
Sci Total Environ. 2016 Feb 1;543(Pt A):223-9
26584072
Arch Environ Contam Toxicol. 2013 Aug;65(2):224-33
23619766
Environ Sci Technol. 2010 Jun 15;44(12):4519-24
20465262
Sci Total Environ. 2013 Oct 1;463-464:565-71
23835066
Environ Sci Technol. 2010 Feb 1;44(3):1144-51
20050652
Environ Sci Technol. 2012 Dec 4;46(23):12839-47
23145852
Environ Sci Technol. 2008 Nov 15;42(22):8317-23
19068812
J Hazard Mater. 2013 Jan 15;244-245:251-8
23270949
Environ Sci Technol. 2008 May 1;42(9):3349-55
18522117
Environ Pollut. 2011 Apr;159(4):970-6
21247678
Sci Total Environ. 2014 Jan 15;468-469:249-57
24035980
Environ Sci Technol. 2012 Jun 19;46(12):6681-8
22621432
Environ Sci Technol. 2007 Nov 1;41(21):7396-402
18044517
Environ Sci Technol. 2010 Jul 1;44(13):4965-72
20521810
Water Res. 2011 Oct 1;45(15):4409-18
21708395
Water Res. 2013 Oct 1;47(15):5889-900
23916155
Sci Total Environ. 2016 Jan 15;542(Pt A):324-33
26519592
Environ Sci Technol. 2009 Mar 1;43(5):1354-9
19350903
Water Res. 2013 Feb 1;47(2):933-44
23228890
Environ Pollut. 2013 Oct;181:287-300
23856352
Chemosphere. 2014 Aug;108:70-5
24875914
Environ Sci Technol. 2004 Jan 15;38(2):529-36
14750730
Pest Manag Sci. 2009 Aug;65(8):857-61
19365877
Environ Pollut. 2013 Sep;180:63-70
23727569