Assessment of the transport of polyvinylpyrrolidone-stabilised zero-valent iron nanoparticles in a silica sand medium
Source abstract
Abstract
Nano zero-valent iron has been considered a promising material for in situ remediation, but its strong tendency to form aggregates makes it difficult to transport in porous media. Thus, stabilization techniques are required to overcome this limitation. In this study, we use polyvinylpyrrolidone (PVP) to synthesise to stabilise iron nanoparticles. The effects of various factors such as nZVI influent concentrations, flow velocity, Ca2+, Mg2+ and humic acid on the transport behaviour of the PVP-nZVI particles were considered. A sedimentation test indicated that PVP-nZVI particles with diameters ranging from 50 to 80 nm were more stable than Bare-nZVI particles. Column experiments demonstrated that PVP-nZVI also exhibited better mobility in silica sand than Bare-nZVI. Due to either the straining or blocking effect, the effluent relative concentration (C/C0) plateau increased with increasing particle concentration. Increasing the flow velocity increased the C/C0, resulting in the reduction of overall single-collector contact efficiency (η0). Humic acid (HA) enhanced the mobility of PVP-nZVI, and the sedimentation test in the presence of HA suggested that decreased attachment of PVP-nZVI to the silica sand surface rather than decreased aggregation was the primary mechanism of this enhanced mobility.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Environmental remediation with nanomaterials · Groundwater flow and contamination studies · Electrokinetic Soil Remediation Techniques
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (29)
Show source-provided references
1. Bradford SA, Bettahar M (2006) Concentration dependent transport of colloids in saturated porous media. J Contam Hydrol 82:99–117. doi: 10.1016/j.jconhyd.2005.09.00610.1016/j.jconhyd.2005.09.006 ↗
2. Bradford SA, Simunek J, Bettahar M, Tadassa YF, van Genuchten MT, Yates SR (2005) Straining of colloids at textural interfaces. Water Resour Res 41:W10404. doi: 10.1029/2004WR00367510.1029/2004WR003675 ↗
3. Chen H, Luo HJ, Lan YC, Dong TT, Hu BJ, Wang YP (2011) Removal of tetracycline from aqueous solutions using polyvinylpyrrolidone (PVP-K30) modified nanoscale zero valent iron. J Hazard Mater 192:44–53. doi: 10.1016/j.jhazmat.2011.04.089
4. Cirtiu CM, Raychoudhury T, Ghoshal S, Moores A (2011) Systematic comparison of the size, surface characteristics and colloidal stability of zero valent iron nanoparticles pre- and post-grafted with common polymers. Colloid Surface A 390:95–104. doi: 10.1016/j.colsurfa.2011.09.01110.1016/j.colsurfa.2011.09.011 ↗
5. Comba S, Sethi R (2009) Stabilization of highly concentrated suspensions of iron nanoparticles using shear-thinning gels of xanthan gum. Water Res 43:3717–3726. doi: 10.1016/j.watres.2009.05.04610.1016/j.watres.2009.05.046 ↗
6. Cushing BL, Kolesnichenko VL, O’Connor CJ (2004) Recent advances in the liquid-phase syntheses of inorganic nanoparticles. Chem Rev 104:3893–3946. doi: 10.1021/cr030027b10.1021/cr030027b ↗
7. Elimelech M (1994) Effect of particle size on the kinetics of particle deposition under attractive double layer interactions. J Colloid Interface Sci 164:190–199. doi: 10.1006/jcis.1994.115710.1006/jcis.1994.1157 ↗
8. El-Temsah YS, Joner EJ (2013) Effects of nano-sized zero-valent iron (nZVI) on DDT degradation in soil and its toxicity to collembola and ostracods. Chemosphere 92:131–137. doi: 10.1016/j.chemosphere.2013.02.03910.1016/j.chemosphere.2013.02.039 ↗
9. Fang ZQ, Qiu XQ, Chen JH, Qiu XH (2009) Degradation of metronidazole by nanoscale zero-valent metal prepared from steel pickling waste liquor. Appl Catal B 100:221–228. doi: 10.1016/j.apcatb.2010.07.03510.1016/j.apcatb.2010.07.035 ↗
10. Fang ZQ, Qiu XH, Chen JH, Qiu XQ (2011) Degradation of the polybrominated diphenyl ethers by nanoscale zero-valent metallic particles prepared from steel pickling waste liquor. Desalination 267:34–41. doi: 10.1016/j.desal.2010.09.00310.1016/j.desal.2010.09.003 ↗
11. Guo L, Yang SH (2000) Synthesis and characterization of poly (vinylpyrrolidone)-modified zinc oxide nanoparticles. Chem Mater 12:2268–2274. doi: 10.1021/cm990781710.1021/cm9907817 ↗
12. He BL, Ha Y, Liu HF, Wang KM, Liew KY (2007) Size control synthesis of polymer-stabilized water-soluble platinum oxide nanoparticles. J Colloid Interface Sci 308:105–111. doi: 10.1016/j.jcis.2006.12.03110.1016/j.jcis.2006.12.031 ↗
13. He F, Zhang M, Qian TW, Zhao DY (2009) Transport of carboxymethyl cellulose stabilized iron nanoparticles in porous media: column experiments and modeling. J Colloid Interface Sci 334:96–102. doi: 10.1016/j.jcis.2009.02.05810.1016/j.jcis.2009.02.058 ↗
14. He F, Zhao DY, Paul C (2010) Field assessment of carboxymethyl cellulose stabilized iron nanoparticles for in situ destruction of chlorinated solvents in source zones. Water Res 44:2360–2370. doi: 10.1016/j.watres.2009.12.04110.1016/j.watres.2009.12.041 ↗
15. Jiemvarangkul P, Zhang WX, Lien HL (2011) Enhanced transport of polyelectrolyte stabilised nanoscale zero-valent iron (nZVI) in porous media. Chem Eng J 170:482–491. doi: 10.1016/j.cej.2011.02.06510.1016/j.cej.2011.02.065 ↗
16. Johnson RL, Johnson GO, Nurmi JT, Tratnyek PG (2009) Natural organic matter enhanced mobility of nano zerovalent iron. Environ Sci Technol 43:5455–5460. doi: 10.1021/es900474f10.1021/es900474f ↗
17. Kanel SR, Nepal D, Manning B, Choi H (2007) Transport of surface-modified iron nanoparticle in porous media and application to arsenic(III) remediation. J Nanopart Res 9:725–735. doi: 10.1007/s11051-007-9225-710.1007/s11051-007-9225-7 ↗
18. Kuhnen F, Barmettler K, Bhattacharjee S, Elimelech M, Kretzschmar R (2000) Transport of iron oxide colloids in packed quartz sand media monolayer and multilayer deposition. J Colloid Interface Sci 231:32–41. doi: 10.1006/jcis.2000.709710.1006/jcis.2000.7097 ↗
19. Lin YH, Tseng HH, Wey MY, Lin MD (2010) Characteristics of two types of stabilized nano zero-valent iron and transport in porous media. Sci Total Environ 408:2260–2267. doi: 10.1016/j.scitotenv.2010.01.03910.1016/j.scitotenv.2010.01.039 ↗
20. Liu D, Johnson PR, Elimelech M (1995) Colloid deposition dynamics in flow through porous media: role of electrolyte concentration. Environ Sci Technol 29:2963. doi: 10.1021/es00012a01210.1021/es00012a012 ↗
21. Phenrat T, Saleh N, Sirk K, Kim HJ, Tilton RD, Lowry GV (2008) Stabilization of aqueous nanoscale zerovalent iron dispersions by anionic polyelectrolytes: adsorbed anionic polyelectrolyte layer properties and their effect on aggregation and sedimentation. J Nanopart Res 10:795–814. doi: 10.1007/s11051-007-9315-610.1007/s11051-007-9315-6 ↗
22. Raychoudhury T, Naja G, Ghoshal S (2010) Assessment of transport of two polyelectrolyte-stabilised zero-valent iron nanoparticles in porous media. J Contam Hydrol 118:143–151. doi: 10.1016/j.jconhyd.2010.09.00510.1016/j.jconhyd.2010.09.005 ↗
23. Saleh N, Kim HJ, Phenrat T, Matyjaszewski K, Tilton RD, Lowry GV (2008) Ionic strength and composition affect the mobility of surface-modified Fe0 nanoparticles in water-saturated sand columns. Environ Sci Technol 42:3349–3355. doi: 10.1021/es071936b10.1021/es071936b ↗
24. Schrick B, Hydutsky BW, Blough JL, Mallouk TE (2004) Delivery vehicles for zerovalent metal nanoparticles in soil and groundwater. Chem Mater 16:2187–2193. doi: 10.1021/cm021810810.1021/cm0218108 ↗
25. Tufenkji N, Elimelech M (2004) Correlation equation for predicting single-collector efficiency in physicochemical filtration in saturated porous media. Environ Sci Technol 38:529–536. doi: 10.1021/es034049r10.1021/es034049r ↗
26. Tufenkji N, Miller GF, Ryan JN, Harvey RW, Elimelech M (2004) Transport of cryptosporidium oocysts in porous media: role of straining and physicochemical filtration. Environ Sci Technol 38:5932–5938. doi: 10.1021/es049789u10.1021/es049789u ↗
27. Wang Y, Zhou DM, Wang YJ, Wang L, Cang L (2012) Automatic pH control system enhances the dechlorination of 2,4,4′-trichlorobiphenyl and extracted PCBs from contaminated soil by nanoscale Fe0 and Pd/Fe0. Environ Sci Pollut R 19:448–457. doi: 10.1007/s11356-011-0587-010.1007/s11356-011-0587-0 ↗
28. Xie L, Shang C (2005) Role of humic acid and quinone model compounds in bromate reduction by zerovalent iron. Environ Sci Technol 39:1092–1100. doi: 10.1021/es049027z10.1021/es049027z ↗
29. Zhan JJ, Zheng TH, Piringer G, Day C, McPherson GL, Lu YF, Papadopoulos K, John VT (2008) Transport characteristics of nanoscale functional zerovalent iron/silica composites for in situ remediation of trichloroethylene. Environ Sci Technol 42:8871–8876. doi: 10.1021/es800387p10.1021/es800387p ↗