Measurements and analysis of setting velocities of natural quartz sand grains

1981 ◽  
Vol 51 (2) ◽  
pp. 631-640 ◽  
Author(s):  
J. Baba ◽  
P. D. Komar
Keyword(s):  
Quartz Sand ◽  
Natural Quartz

scholarly journals Simultaneous Adsorption of Heavy Metals from Roadway Stormwater Runoff Using Different Filter Media in Column Studies

Water ◽  
2018 ◽  
Vol 10 (9) ◽  
pp. 1160 ◽  
Author(s):  
Tadele Haile ◽  
Maria Fuerhacker
Keyword(s):  
Heavy Metals ◽  
Sandy Soil ◽  
Quartz Sand ◽  
Stormwater Runoff ◽  
Column Experiment ◽  
Poor Performance ◽  
Filter Media ◽  
Column Studies ◽  
Natural Quartz ◽  
Removal Efficiencies

Stormwater runoff from roadways often contains a variety of contaminants such as heavy metals, which can adversely impact receiving waters. The filter media in stormwater filtration/infiltration systems play a significant role in the simultaneous removal of multiple pollutants. In this study, the capacity of five filter media—natural quartz sand (QS), sandy soil (SS) and three mineral-based technical filter media (TF-I, TF-II and TF-III)—to adsorb heavy metals (Cu, Pb and Zn) frequently detected in stormwater, as well as remobilization due to de-icing salt (NaCl), were evaluated in column experiments. The column breakthrough data were used to predict lifespan of the filter media. Column experiment operated under high hydraulic load showed that all technical filters and sandy soil achieved >97%, 94% and >80% of Pb, Cu and Zn load removals, respectively, while natural quartz sand (QS) showed very poor performance. Furthermore, treatment of synthetic stormwater by the soil and technical filter media met the requirements of the Austrian regulation regarding maximum effluent concentrations and minimum removal efficiencies for groundwater protection. The results showed that application of NaCl had only a minor impact on the remobilization of heavy metals from the soil and technical filter media, while the largest release of metals was observed from the QS column. Breakthrough analysis indicated that load removal efficiencies at column exhaustion (SS, TF-I, TF-II and TF-III) were >95% for Cu and Pb and 80–97% for Zn. Based on the adsorption capacities, filtration systems could be sized to 0.4 to 1% (TF-I, TF-II and TF-III) and 3.5% (SS) of their impervious catchment area and predicated lifespan of each filter media was at least 35, 36, 41 and 29 years for SS, TF-I, TF-II and TF-III, respectively. The findings of this study demonstrate that soil—based and technical filter media are effective in removing heavy metals and can be utilized in full-stormwater filtration systems.

Mobility of Trihydroxybenzene Compounds Through Natural Quartz Sand: Effect of Hydroxyl Groups Positions

2016 ◽  
Vol 5 (2) ◽  
pp. 173-181 ◽  
Author(s):  
H. Ouachtak ◽  
R. Ait Akbour ◽  
A. Jada ◽  
J. Douch ◽  
A. Ait Addi ◽  
...  
Keyword(s):  
Quartz Sand ◽  
Hydroxyl Groups ◽  
Natural Quartz

Sorption of tributyltin onto a natural quartz sand

2003 ◽  
Vol 263 (1) ◽  
pp. 4-12 ◽  
Author(s):  
Philippe Behra ◽  
Émilie Lecarme-Théobald ◽  
Maı̈té Bueno ◽  
Jean-Jacques Ehrhardt
Keyword(s):  
Quartz Sand ◽  
Natural Quartz

The Properties of Mineral Additives Obtained by Collision Milling in Disintegrator

2016 ◽  
Vol 721 ◽  
pp. 327-331 ◽  
Author(s):  
Girts Bumanis ◽  
Dmitri Goljandin ◽  
Diana Bajare
Keyword(s):  
Chemical Composition ◽  
Specific Energy ◽  
Brittle Material ◽  
Quartz Sand ◽  
Shape Factor ◽  
Natural Quartz ◽  
Short Period ◽  
Wide Range ◽  
Milling Method ◽  
Mineral Additives

Mineral additives are materials which are used in wide range of industries including construction, cosmetics, agricultural and biotechnology. Such materials as plasters, paints, abrasives etc. are produced using mineral powders. Main qualities of mineral additives are purity of chemical composition, grading properties and shape factor. To obtain powder like material most common method is milling. One of most effective milling method for refining of brittle material is grinding by collision in disintegrator. One of advantage of this method is that high milling energy is transferred to the milling material in short period of time. In present research three types of mineral materials were treated in disintegrator with specific energy Es applied 8.4 and 25.2 kWh/t: natural quartz sand 0.3/1mm, quartz-limestone 0.3/2.5mm sand and dolomite screenings 0/4mm. Results indicate that powder like material with d90 form 66 to 141 µm could be obtained at Es 8.4 kWh/t while increase of Es reduces d90 value to 48 to 72 µm and the milling efficiency was effected by the sand type.

Preparation and properties of tubular macroporous ceramic membrane supports based on natural quartz sand and dolomite

2019 ◽  
Vol 56 (2) ◽  
pp. 379-387 ◽  
Author(s):  
Cheikh Kadiri ◽  
Abdelhamid Harabi ◽  
Ferhat Bouzerara ◽  
Lazhar Foughali ◽  
Noureddine Brihi ◽  
...  
Keyword(s):  
Quartz Sand ◽  
Ceramic Membrane ◽  
Natural Quartz

Size-dependent physicochemical properties of mesoporous nanosilica produced from natural quartz sand using three different methods

RSC Advances ◽  
2015 ◽  
Vol 5 (59) ◽  
pp. 47390-47397 ◽  
Author(s):  
Sundaramoorthy Arunmetha ◽  
Arumugam Karthik ◽  
Saturappan Ravisekaran Srither ◽  
Murugan Vinoth ◽  
Rangaraj Suriyaprabha ◽  
...  
Keyword(s):  
Physicochemical Properties ◽  
Spray Pyrolysis ◽  
Surface Area ◽  
Quartz Sand ◽  
High Surface ◽  
Sol Gel ◽  
High Surface Area ◽  
Natural Quartz ◽  
Processing Methods ◽  
Size Dependent

Mesoporous high-surface-area silica (SiO2) nanoparticles were produced from natural quartz sand (orthoquartzite) using three processing methods namely sol–gel, sonication, and spray pyrolysis.

The Effect of Oxide Coating Dissolution on Cd Transport Through a Natural Quartz Sand

2004 ◽  
Vol 159 (1) ◽  
pp. 49-65 ◽  
Author(s):  
Marco Petrangeli Papini ◽  
Annalisa Bianchi ◽  
Cecile Grimaldi, ◽  
Philippe Behra
Keyword(s):  
Quartz Sand ◽  
Oxide Coating ◽  
Natural Quartz ◽  
Cd Transport

scholarly journals Removal from Water and Adsorption onto Natural Quartz Sand of Hydroquinone

2015 ◽  
Vol 05 (03) ◽  
pp. 131-143 ◽  
Author(s):  
Hassan Ouachtak ◽  
Rachid Ait Akbour ◽  
Jamaa Douch ◽  
Amane Jada ◽  
Mohamed Hamdani
Keyword(s):  
Quartz Sand ◽  
Natural Quartz
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