Field and Laboratory Investigations of Inactivation of Viruses (PRD1 and MS2) Attached to Iron Oxide-Coated Quartz Sand

2002 ◽  
Vol 36 (11) ◽  
pp. 2403-2413 ◽  
Author(s):  
Joseph N. Ryan ◽  
Ronald W. Harvey ◽  
David Metge ◽  
Menachem Elimelech ◽  
Theresa Navigato ◽  
...  
Keyword(s):  
Iron Oxide ◽  
Quartz Sand ◽  
Laboratory Investigations

A laboratory study to determine the effect of iron oxides on proton NMR measurements

Geophysics ◽  
2007 ◽  
Vol 72 (1) ◽  
pp. E27-E32 ◽  
Author(s):  
Kristina Keating ◽  
Rosemary Knight
Keyword(s):  
Iron Oxide ◽  
Relaxation Rate ◽  
Iron Oxides ◽  
Quartz Sand ◽  
Pore Space ◽  
Nmr Relaxation ◽  
Volume Ratio ◽  
Proton Nuclear Magnetic Resonance ◽  
Surface Relaxation ◽  
Relaxation Rates

Using laboratory methods, we investigate the effect of the presence and mineralogic form of iron on measured proton nuclear magnetic resonance (NMR) relaxation rates. Five samples of quartz sand were coated with ferrihydrite, goethite, hematite, lepidocrocite, and magnetite. The relaxation rates for these iron-oxide-coated sands saturated with water were measured and compared to the relaxation rate of quartz sand saturated with water. We found that the presence of the iron oxides led to increases in the relaxation rates by increasing the surface relaxation rate. The magnitude of the surface relaxation rate was different for the various iron-oxide minerals because of changes in both the surface-area-to-volume ratio of the pore space, and the surface relaxivity. The relaxation rate of the magnetite-coated sand was further increased because of internal magnetic field gradients caused by the presence of magnetite. We conclude that both the concentration and mineralogical form of iron can have a significant impact on NMR relaxation behavior.

Laboratory investigations into the phenomenon of swelling and foaming in synthetic iron oxide gangue specimens

1993 ◽  
Vol 64 (10) ◽  
pp. 491-494 ◽  
Author(s):  
Henning Schliephake ◽  
Jinguo Ren ◽  
Klaus Koch ◽  
Jakob Lamut
Keyword(s):  
Iron Oxide ◽  
Laboratory Investigations

Transport of Iron Oxide Colloids in Packed Quartz Sand Media: Monolayer and Multilayer Deposition

2000 ◽  
Vol 231 (1) ◽  
pp. 32-41 ◽  
Author(s):  
Florian Kuhnen ◽  
Kurt Barmettler ◽  
Subir Bhattacharjee ◽  
Menachem Elimelech ◽  
Ruben Kretzschmar
Keyword(s):  
Iron Oxide ◽  
Quartz Sand ◽  
Multilayer Deposition

scholarly journals Use of Regeneration Products of Moulding Mixtures For Construction and Refractory Materials Manufacturing

2017 ◽  
Vol 2 (2) ◽  
pp. 83
Author(s):  
Kapustin F.L. ◽  
Furman E.L. ◽  
Ponomarenko A.A. ◽  
Kapustin A.F.
Keyword(s):  
Quartz Sand ◽  
High Efficiency ◽  
Refractory Materials ◽  
Molding Sand ◽  
Dust Fraction ◽  
Laboratory Investigations ◽  
Casting Production

<p>Composition and regeneration properties of the molding sand mixtures worked out of casting production ‒ quartz sand and dust fraction. The results of the laboratory investigations as to their use in both building and refractory materials composition are presented. The industrial tests have shown the high efficiency of silica rich regenerated products in dinas products manufacture.</p>

Using Red Mud Manufacturing Building Glass-Ceramics

2013 ◽  
Vol 423-426 ◽  
pp. 1014-1017
Author(s):  
Chang Sheng Hu ◽  
Xi Wang
Keyword(s):  
Iron Oxide ◽  
Glass Ceramic ◽  
Quartz Sand ◽  
Red Mud ◽  
Glass Surface ◽  
Molten Glass ◽  
Ceramic Body ◽  
Glass Ceramics ◽  
Surface Color ◽  
Annealing Glass

In this paper, red mud of aluminum industrial residue has been studied to make the glass-ceramic, quartz sand, magnesite, fluorite and red mud was mixed to melt, molten glass was poured into the model in shape, then annealing, glass-ceramic was make, the color of glass-ceramic is brown or black, the crystals in glass-ceramic body is iron oxide by XRD, Strength, the expansion coefficient and morphology of the sample were measured. Glass surface color depends on the melting temperature.

Effect of rhamnolipid biosurfactant on transport and retention of iron oxide nanoparticles in water-saturated quartz sand

2021 ◽  
Author(s):  
Shuchi Liao ◽  
Anushree Ghosh ◽  
Matthew D. Becker ◽  
Linda M. Abriola ◽  
Natalie L. Cápiro ◽  
...  
Keyword(s):  
Mathematical Modeling ◽  
Iron Oxide ◽  
Iron Oxide Nanoparticles ◽  
Quartz Sand ◽  
Column Experiments ◽  
Oxide Nanoparticles ◽  
The Stability ◽  
Rhamnolipid Biosurfactant ◽  
Water Saturated

Column experiments and mathematical modeling results demonstrated that rhamnolipid biosurfactant can enhance the stability and mobility of iron oxide nanoparticles in water-saturated quartz sand.

TEM observation of iron oxide pillars in montmorillonite

1990 ◽  
Vol 48 (4) ◽  
pp. 882-883
Author(s):  
H. Mori ◽  
Y. Murata ◽  
H. Yoneyama ◽  
H. Fujita
Keyword(s):  
Aqueous Solution ◽  
Iron Oxide ◽  
Fine Particles ◽  
Aqueous Suspension ◽  
Volume Ratio ◽  
Exchange Capacity ◽  
Nano Composites ◽  
Pillared Montmorillonite ◽  
Topographic Features ◽  
Transmission Electron

Recently, a new sort of nano-composites has been prepared by incorporating such fine particles as metal oxide microcrystallites and organic polymers into the interlayer space of montmorillonite. Owing to their extremely large specific surface area, the nano-composites are finding wide application[1∼3]. However, the topographic features of the microstructures have not been elucidated as yet In the present work, the microstructures of iron oxide-pillared montmorillonite have been investigated by high-resolution transmission electron microscopy.Iron oxide-pillared montmorillonite was prepared through the procedure essentially the same as that reported by Yamanaka et al. Firstly, 0.125 M aqueous solution of trinuclear acetato-hydroxo iron(III) nitrate, [Fe3(OCOCH3)7 OH.2H2O]NO3, was prepared and then the solution was mixed with an aqueous suspension of 1 wt% clay by continuously stirring at 308 K. The final volume ratio of the latter aqueous solution to the former was 0.4. The clay used was sodium montmorillonite (Kunimine Industrial Co.), having a cation exchange capacity of 100 mequiv/100g. The montmorillonite in the mixed suspension was then centrifuged, followed by washing with deionized water. The washed samples were spread on glass plates, air dried, and then annealed at 673 K for 72 ks in air. The resultant film products were approximately 20 μm in thickness and brown in color.

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