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Cation exchange resin supported nanoscale zero-valent iron for removal of phosphorus in rainwater runoff |
XIE Bangmi,ZUO Jiane1,( ),GAN Lili,LIU Fenglin,WANG Kaijun |
| State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, China |
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Abstract Self-made cation exchange resin supported nanoscale zero-valent iron (R-nZVI) was used to remove phosphorus in rainwater runoff. 80% of phosphorus in rainwater runoff from grassland was removed with an initial concentration of 0.72 mg·L–1 phosphorus when the dosage of R-nZVI is 8 g per liter rainwater, while only 26% of phosphorus was removed when using cation exchange resin without supported nanoscale zero-valent iron under the same condition. The adsorption capacity of R-nZVI increased up to 185 times of that of the cation exchange resin at a saturated equilibrium phosphorous concentration of 0.42 mg·L–1. Various techniques were implemented to characterize the R-nZVI and explore the mechanism of its removal of phosphate. Scanning electron microscopy (SEM) indicated that new crystal had been formed on the surface of R-nZVI. The result from inductive coupled plasma (ICP) indicated that 2.1% of nZVI was loaded on the support material. The specific surface area was increased after the load of nanoscale zero-valent iron (nZVI), according to the measurement of BET-N2 method. The result of specific surface area analysis also proved that phosphorus was removed mainly through chemical adsorption process. X-ray photoelectron spectroscopy (XPS) analysis showed that the new product obtained from chemical reaction between phosphate and iron was ferrous phosphate.
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nanoscale zero-valent iron(R-nZVI)
cation exchange resin
rainwater runoff
phosphorus adsorption
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Corresponding Author(s):
ZUO Jiane
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Issue Date: 19 May 2014
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| 1 |
Erlk S. Experimental lakes in Canada. Science, 2008, 322(5906): 1316-1319
doi: 10.1126/science.322.5906.1316 pmid: 19039113
|
| 2 |
Schauser I, Chorus I, Heinzmann B. Strategy and current status of combating eutrophication in two Berlin lakes for safeguarding drinking water resources. Water Science and Technology, 2006, 54(11-12): 93-100
doi: 10.2166/wst.2006.833 pmid: 17302309
|
| 3 |
Ding C C, Liu J.The state and impact factors of non-point source pollution in China. Chinese Population, Resource and Environment, 2011, 21(3): 86-89 (in Chinese)
|
| 4 |
Bai Y. 2010. Study on the pollution feature and treatment technology of rainwater runoff in Taihu New City, Wuxi. Dissertation for the Doctoral Degree. Beijing: Tsinghua University, 2011 (in Chinese)
|
| 5 |
Nurmi J T, Tratnyek P G, Sarathy V, Baer D R, Amonette J E, Pecher K, Wang C, Linehan J C, Matson D W, Penn R L, Driessen M D. Characterization and properties of metallic iron nanoparticles: spectroscopy, electrochemistry, and kinetics. Environmental Science & Technology, 2005, 39(5): 1221-1230
doi: 10.1021/es049190u pmid: 15787360
|
| 6 |
Li X Q, Elliott D W, Zhang W X. Zero-valent iron nanoparticles for abatement of environmental pollutants: materials and engineering aspects. Critical Reviews in Solid State and Material Sciences, 2006, 31(4): 111-122
doi: 10.1080/10408430601057611
|
| 7 |
Cao J S, Elliott D, Zhang W X. Perchlorate reduction by nanoscale iron particles. Journal of Nanoparticle Research, 2005, 7(4-5): 499-506
doi: 10.1007/s11051-005-4412-x
|
| 8 |
Cumbal L, Greenleaf J, Leun D, SenGupta A K. Polymer supported inorganic nanoparticles: characterization and environmental applications. Reactive & Functional Polymers, 2003, 4(1-3): 167-180
doi: 10.1016/S1381-5148(02)00192-X
|
| 9 |
Metcalf E I. Wastewater Engineering-Treatment, Disposal, and Reuse. 3rd. New York: McGraw-Hill Incorporation, 1991
|
| 10 |
Gan L L, Zuo J E, Xie B M, Li P, Huang X. Zeolite (Na) modified by nano-Fe particles adsorbing phosphate in rainwater runoff. Journal of Environmental Sciences (China), 2012, 24(11): 1929-1933
doi: 10.1016/S1001-0742(11)61035-8 pmid: 23534225
|
| 11 |
Zhang X, Lin S, Chen Z L, Megharaj M, Naidu R. Kaolinite-supported nanoscale zero-valent iron for removal of Pb2+ from aqueous solution: reactivity, characterization and mechanism. Water Research, 2011, 45(11): 3481-3488
doi: 10.1016/j.watres.2011.04.010 pmid: 21529878
|
| 12 |
Huang C P, Wang H W, Chiu P C. Nitrate reduction by metallic iron. Water Research, 1998, 35(8): 2257-2264
doi: 10.1016/S0043-1354(97)00464-8
|
| 13 |
Boujelben N, Bouzid J, Elouear Z, Feki M, Jamoussi F, Montiel A. Phosphorus removal from aqueous solution using iron coated natural and engineered sorbents. Journal of Hazardous Materials, 2008, 151(1): 103-110
doi: 10.1016/j.jhazmat.2007.05.057 pmid: 17611022
|
| 14 |
Duan J M, Lin J Q, Fang H D, Nie B, Wu J J, Wu G H. Experimental study on simultaneous removal of ammonium and phosphate in treated wastewater by modified zeolite. Chinese Journal of Environmental Engineering, 2009, 3(5): 829-833 (in Chinese)
|
| 15 |
Moulder J F, Stickle W F, Sobol P E. Handbook of X- ray Photoelectron Spectroscopy. Montreal: Perkin- Elmer Corporation Publisher, 1995
|
| 16 |
Sun Y P, Li X Q, Cao J S, Zhang W X, Wang H P. Characterization of zero-valent iron nanoparticles. Advances in Colloid and Interface Science, 2006, 120(1-3): 47-56
doi: 10.1016/j.cis.2006.03.001 pmid: 16697345
|
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