An optimized permanent magnetic nanoparticle recovery device (i.e., the MagNERD) was developed and operated to separate, capture, and reuse superparamagnetic Fe3O4 from treated water in-line under continuous flow conditions. Experimental data and computational modeling demonstrate how the MagNERD’s efficiency to recover nanoparticles depends upon reactor configuration, including the integration of stainless-steel wool around permanent magnets, hydraulic flow conditions, and magnetic NP uptake. The MagNERD efficiently removes Fe3O4 in the form of a nanopowder, up to > 95% at high concentrations (500 ppm), under scalable and process-relevant flow rates (1 L/min through a 1.11-L MagNERD reactor), and in varying water matrices (e.g., ultrapure water, brackish water). The captured nanoparticles were recoverable from the device using a simple hydraulic backwashing protocol. Additionally, the MagNERD removed ≥ 94% of arsenic-bound Fe3O4, after contacting As-containing simulated drinking water with the nanopowder. The MagNERD emerges as an efficient, versatile, and robust system that will enable the use of magnetic nanoparticles in larger scale water treatment applications.
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Ambashta RD, Sillanpää M (2010) Water purification using magnetic assistance: a review. J Hazard Mater 180:38–49. https://doi.org/10.1016/j.jhazmat.2010.04.105
Deen WM (2011) Analysis of transport phenomena, 2nd edn. Oxford University Press
Gerber R (1978) Theory of particle capture in axial filters for high gradient magnetic separation. J Phys D Appl Phys 11:2119–2129. https://doi.org/10.1088/0022-3727/11/15/009
Gómez-Pastora J, Bringas E, Ortiz I (2014) Recent progress and future challenges on the use of high performance magnetic nano-adsorbents in environmental applications. Chem Eng J 256:187–204. https://doi.org/10.1016/j.cej.2014.06.119
Gutierrez AM, Dziubla TD, Hilt JZ (2017) Recent advances on iron oxide magnetic nanoparticles as sorbents of organic pollutants in water and wastewater treatment. Rev Environ Health 32:111–117. https://doi.org/10.1515/reveh-2016-0063
Hatch GP, Stelter RE (2001) Magnetic design considerations for devices and particles used for biological high-gradient magnetic separation (HGMS) systems. J Magn Magn Mater 225:262–276. https://doi.org/10.1016/S0304-8853(00)01250-6
Kikoin K, Drechsler S, Koepernik K et al (2015) Magnetic moment formation due to arsenic vacancies in LaFeAsO-derived superconductors. Sci Rep 5:1–11. https://doi.org/10.1038/srep11280
Larumbe S, Gómez-Polo C, Pérez-Landazábal JI, Pastor JM (2012) Effect of a SiO2 coating on the magnetic properties of Fe3O4 nanoparticles. J Phys Condens Matter 24:266007. https://doi.org/10.1088/0953-8984/24/26/266007
Mahmoudi M, Sant S, Wang B, Laurent S, Sen T (2011) Superparamagnetic iron oxide nanoparticles (SPIONs): development, surface modification and applications in chemotherapy. Adv Drug Deliv Rev 63:24–46. https://doi.org/10.1016/j.addr.2010.05.006
Mariani G, Fabbri M, Negrini F, Ribani PL (2010) High-gradient magnetic separation of pollutant from wastewaters using permanent magnets. Sep Purif Technol 72:147–155. https://doi.org/10.1016/j.seppur.2010.01.017
Moeser GD, Roach KA, Green WH et al (2004) High-gradient magnetic separation of coated magnetic nanoparticles. AICHE J 50:2835–2848. https://doi.org/10.1002/aic.10270
National Science Foundation (2013) NSF/ANSI 61 - 2013 drinking water system components - health effects. http://www.nsf.org/newsroom_pdf/NSF_61-13_-_watermarked.pdf
Oberteuffer J (1973) High gradient magnetic separation. Magn IEEE Trans 9:303–306. https://doi.org/10.1109/TMAG.1973.1067673
Oberteuffer J (1974) Magnetic separation: a review of principles, devices, and applications. Magn IEEE Trans 10:223–238. https://doi.org/10.1109/TMAG.1974.1058315
Qu X, Alvarez PJJ, Li Q (2013) Applications of nanotechnology in water and wastewater treatment. Water Res 47:3931–3946. https://doi.org/10.1016/j.watres.2012.09.058
Reza A, Mirrahimi MA (2010) Efficient separation of heavy metal cations by anchoring polyacrylic acid on superparamagnetic magnetite nanoparticles through surface modification. Chem Eng J 159:264–271. https://doi.org/10.1016/j.cej.2010.02.041
Ringler E, Chatterton B, Philbrook D, Treatment MW (2018) An advanced clarification process for treating produced waters. SPE prod Oper 154–163
Rossi LM, Costa NJS, Silva FP, Wojcieszak R (2014) Magnetic nanomaterials in catalysis: advanced catalysts for magnetic separation and beyond. Green Chem 16:2906. https://doi.org/10.1039/c4gc00164h
Tang T, Liu F, Liu Y, et al (2014) Identifying the magnetic properties of graphene oxide 123104:27–32. doi: https://doi.org/10.1063/1.4869827
Toh PY, Yeap SP, Kong LP et al (2012) Magnetophoretic removal of microalgae from fishpond water: feasibility of high gradient and low gradient magnetic separation. Chem Eng J 211–212:22–30. https://doi.org/10.1016/j.cej.2012.09.051
Veligatla M, Katakam S, Das S, Dahotre N, Gopalan R, Prabhu D, Arvindha Babu D, Choi-Yim H, Mukherjee S (2015) Effect of iron on the enhancement of magnetic properties for cobalt-based soft magnetic metallic glasses. Metall Mater Trans A 46:1019–1023. https://doi.org/10.1007/s11661-014-2714-2
Westerhoff P, Alvarez P, Gardea-Torresdey J et al (2016) Overcoming implementation barriers for nanotechnology in drinking water treatment. Environ Sci Nano 3:1241–1253. https://doi.org/10.1039/c6en00183a
Yavuz CT, Mayo JT, Suchecki C, Wang J, Ellsworth AZ, D’Couto H, Quevedo E, Prakash A, Gonzalez L, Nguyen C, Kelty C, Colvin VL (2010) Pollution magnet: Nano-magnetite for arsenic removal from drinking water. Environ Geochem Health 32:327–334. https://doi.org/10.1007/s10653-010-9293-y
Yavuz CT, Mayo JT, Yu WW et al (2006) Low-field magnetic separation of Monodisperse Fe3O4 Nanocrystals. Science 314(80):964–967. https://doi.org/10.1126/science.1131475
Zborowski M, Sun LP, Moore LR et al (1999) Continuous cell separation using novel magnetic quadrupole flow sorter. J Magn Magn Mater 194:224–230. https://doi.org/10.1016/S0304-8853(98)00581-2
Zhu Q, Ma J, Chen F et al (2019) Treatment of hydraulic fracturing flowback water using the combination of gel breaking , magnetic- enhanced coagulation , and electrocatalytic oxidation. Sep Sci Technol:1–8. https://doi.org/10.1080/01496395.2019.1614061
The authors wish to acknowledge the staff and facilities of the Shared Equipment Authority at Rice University.
This work was funded by the National Science Foundation (EEC-1449500) Nanosystems Engineering Research Center on Nanotechnology-Enabled Water Treatment, and the Lifecycle of Nanomaterials funded by US Environmental Protection Agency through the STAR program (RD83558001).
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This article is part of the topical collection: Nanotechnology Convergence in Africa
Guest Editors: Mamadou Diallo, Abdessattar Abdelkefi, and Bhekie Mamba
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Powell, C.D., Atkinson, A.J., Ma, Y. et al. Magnetic nanoparticle recovery device (MagNERD) enables application of iron oxide nanoparticles for water treatment. J Nanopart Res 22, 48 (2020). https://doi.org/10.1007/s11051-020-4770-4
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