Arsenate Removal from Aqueous Media by Nanosized Hydrated Ferric Oxide (HFO)-Loaded Polymeric Sorbents: Effect of HFO Loadings

2008 ◽  
Vol 47 (11) ◽  
pp. 3957-3962 ◽  
Author(s):  
Qingjian Zhang ◽  
Bingcai Pan ◽  
Weiming Zhang ◽  
Bingjun Pan ◽  
Quanxing Zhang ◽  
...  
Keyword(s):  
Ferric Oxide ◽  
Aqueous Media ◽  
Polymeric Sorbents ◽  
Hydrated Ferric Oxide

Porous Hydrogels Embedded with Hydrated Ferric Oxide Nanoparticles for Arsenate Removal

2019 ◽  
Vol 1 (5) ◽  
pp. 1006-1014 ◽  
Author(s):  
Ryan Zowada ◽  
Reza Foudazi
Keyword(s):  
Ferric Oxide ◽  
Oxide Nanoparticles ◽  
Hydrated Ferric Oxide

scholarly journals Phosphate removal from aqueous solution using a hybrid impregnated polymeric sorbent containing hydrated ferric oxide (HFO)

2015 ◽  
Vol 91 (3) ◽  
pp. 693-704 ◽  
Author(s):  
Xialei You ◽  
Diana Guaya ◽  
Adriana Farran ◽  
César Valderrama ◽  
José Luis Cortina
Keyword(s):  
Aqueous Solution ◽  
Ferric Oxide ◽  
Phosphate Removal ◽  
Polymeric Sorbent ◽  
Hydrated Ferric Oxide

scholarly journals Adsorption mechanism of 2, 4-dichlorophenol on ferric Oxide from aqueous solution

2013 ◽  
Vol 37 (1) ◽  
pp. 1-10 ◽  
Author(s):  
TSA Islam ◽  
HA Begum ◽  
MA Hossain ◽  
M Moniruzzaman
Keyword(s):  
Aqueous Solution ◽  
Ferric Oxide ◽  
Electrostatic Force ◽  
Aqueous Media ◽  
Effect Of Temperature ◽  
Oxide Surface ◽  
Differential Heat ◽  
Solution Ph ◽  
Adsorption Effect ◽  
Equilibrium Time

The adsorption of 2, 4-dichlorophenol (2, 4-DCP) from aqueous solution on ferric oxide was carried out in a batch process. The experiments were done to determine the equilibrium time of adsorption, effect of temperature, pH, electrolytes and substituted groups of adsorbate to elucidate the mechanism of the adsorption. The estimated equilibrium time was found to be three hours. The adsorption was found to increase with increasing temperature from 30 - 50ºC. The numerical values of differential heat of adsorption increased with increasing surface coverage suggesting that the adsorption on ferric oxide might be chemical in nature. The adsorption of 2, 4-DCP on ferric oxide was found to increase with increasing pH of the solution from 3.0 - 5.0 but further increase of solution pH from 5.0 - 8.0 decreased the adsorption. Electrolytic effect showed that the adsorption was favorable in presence of NO3- ion as compared with Cl- ion. The effect of substituted groups showed that the amount of 2, 4-DCP adsorbed on ferric oxide was lower than that of 2, 5-DCP. Such observations suggest that the adsorption of 2, 4-DCP on Fe2O3 is dominated by the electrostatic force of attraction between DPC ions and iron oxide surface in aqueous media. DOI: http://dx.doi.org/10.3329/jbas.v37i1.15674 Journal of Bangladesh Academy of Sciences, Vol. 37, No. 1, 1-10, 2013

Hydrated ferric oxide (HFO)-encapsulated tea waste for enhanced lead(II), cadmium(II), and copper(II) removal from waters

2015 ◽  
Vol 57 (41) ◽  
pp. 19456-19465
Author(s):  
Shunli Wan ◽  
Guobin Liu ◽  
Hai He ◽  
Nan Qu ◽  
Zhaozhao Ma ◽  
...  
Keyword(s):  
Ferric Oxide ◽  
Hydrated Ferric Oxide ◽  
Tea Waste

scholarly journals Phosphate removal from aqueous solutions using a hybrid fibrous exchanger containing hydrated ferric oxide nanoparticles

2016 ◽  
Vol 4 (1) ◽  
pp. 388-397 ◽  
Author(s):  
Xialei You ◽  
Adriana Farran ◽  
Diana Guaya ◽  
César Valderrama ◽  
Vladimir Soldatov ◽  
...  
Keyword(s):  
Aqueous Solutions ◽  
Ferric Oxide ◽  
Phosphate Removal ◽  
Oxide Nanoparticles ◽  
Hydrated Ferric Oxide

Competition of Various Ions Present in Shallow Aquifer Water in Respect of Arsenic Removal by Hydrated Ferric Oxide

2016 ◽  
Vol 12 (4) ◽  
pp. 25-33 ◽  
Author(s):  
M. Emdadul Haque ◽  
Md Abdus Sabur ◽  
Md. Mahamud-Ul-Hoque ◽  
Syed Safiullah
Keyword(s):  
Ferric Oxide ◽  
Arsenic Removal ◽  
Shallow Aquifer ◽  
Hydrated Ferric Oxide

scholarly journals The Aztec Siltstone: an Upper Devonian Alluvial Plain Red Bed Sequence, Southern Victoria Land, Antarctica

2021 ◽  
Author(s):  
◽  
John Gordon McPherson
Keyword(s):  
Water Table ◽  
Ferric Oxide ◽  
Alluvial Plain ◽  
Heavy Minerals ◽  
Fine Grained ◽  
Subaerial Exposure ◽  
Hydrated Ferric Oxide ◽  
Victoria Land ◽  
Clay Matrix ◽  
Red Bed

<p>The Aztec Siltstone (late Devonian) crops out for 150 km along the Transantarctic Mountains, between the Mawson and Mulock Glaciers of southern Victoria Land, Antarctica. It is the uppermost formation of the Taylor Group, the lower of the two subdivisions of the Beacon Supergroup of southern Victoria Land. The formation consists largely of fine to medium-grained sandstone, and greyish red (10R 4/2), grey (N5), and greenish grey (5G 6/1) siltstone and claystone. Other lithologies include carbonaceous siltstone and claystone, limestone and intraformational conglomerate. Conchostracans, fish fossils, plant fragments, and gypsum lenses are present also. Cross-stratification, horizontal stratification, channelling, and "fining-upwards" cycles indicate deposition from shallow, high sinuosity (tortuous), meandering streams that migrated laterally across a broad alluvial plain. The sandstone beds are laterally accreted channel deposits, whereas the siltstone and claystone beds represent overbank deposition by vertical accretion in the interchannel areas of the floodbasin. Other floodbasin deposits include lacustrinal sediments from pluvial ponds and ox-bow lakes, and palustrinal sediments from the backswamps. Overbank deposition of bed load material formed levees, and stream avulsion and crevassing during flood stage produced crevasse-splay deposits. The sandstone beds are quartzarenites, with detrital grains consisting largely of plutonic quartz; other grains include chert, feldspar, metamorphic quartz and a trace of heavy minerals. Sandstone textures average fine-grained and well sorted, although sandstone with textural inversion is common. Compositional and textural characteristics indicate that the sandstone is a product of the reworking of older quartzarenite in the source area. Subaerial exposure was a feature of the fine-grained floodbasin sediments; the evidence includes the abundance of mudcracks, and a variety of soil features. The latter include extensive kankar ('calichea') horizons, pseudo- or wavey bedding structures, a compositional and textural similarity to modern soils, vein networks (considered to be a product of deep cracking in the unconsolidated. substratum), burrowing, and root horizons with in some cases associated plant fragments. The kankar ('calichea') suggests that there was a period of prolonged subaerial exposure and soil development which followed the deposition of fine-grained, fine member lithologies of the "fining upwards" cycles. This period was probably in the range 5,000 to 50,000 years. The Aztec Siltstone is a typical "variegated" red-bed sequence, containing interbedded red and drab fine-grained lithologies. The fine-grained drab lithologies consist of quartz grains set in a matrix of green illitic and chloritic clay. The colour in the interbedded red and grey siltstone and claystone results from a haematite pigment, which in the red samples is present in a concentration sufficient to completely mask the green colour of the clay matrix. The reddening is believed to have been a penecontemporaneous process that took place in the floodbasin sediments during their prolonged subaerial exposure under a hot and seasonally wet and dry (savanna) climate. The haematitic pigment was derived from the in situ and progressive dehydration of detrital amorphous and poorly crystalline brown hydrated ferric oxide in those sediments which maintained an oxidizing environment and were above the ground-water table during the dehydration process. Sediments which remained in a water-logged state, below the water table, and in association with organic matter, were invariably reduced and lost their iron oxide in solution. Later post-depositional reduction of some red lithologies produced reduction spheres and channels, reduced burrows and vein networks, and the reduced layers immediately underlying the scoured surface at the base of the channel sandstones. Some chemical redistribution of iron contributed to the variegated and mottled horizons of the formation. The mineral composition of adjacent red and drab lithologies is essentially the same except for the haematite constituent. The red average 5.86 ([delta] = 1.09) percent total Fe (as Fe2O3), of, which 3.01 ([delta] = 0.63) percent is as haematite pigment, 1.57 percent Fe2O3 is in a combined form (probably as ferric silicates), and 1 14 ([delta] = 0.57) percent is as FeO. The green average 3.65 ([delta] = 1.81) percent total Fe (as Fe2O3) of which approximately 0.27 percent is as haematite pigment, approximately 1.4 percent Fe2O3 is in a combined form, and 1.77 ([delta] = 1.37) percent is as FeO. In the majority of the green lithologies the free ferric oxide (as haematite or hydrated ferric oxide) was removed in solution during reduction, and at the same time minor amounts of clay matrix were also leached out.</p>

Modification of Waste Carpet with Hydrated Ferric Oxide for Recycling as an Adsorbent Material to Recover Phosphate from Wastewater

2013 ◽  
Vol 5 (10) ◽  
pp. 1427-1435 ◽  
Author(s):  
Simon R. Collinson ◽  
Oscar Duplá García
Keyword(s):  
Ferric Oxide ◽  
Hydrated Ferric Oxide

Removal of β-Naphthalenesulfonic Acid from Aqueous Solution Using Modified Resin

2012 ◽  
Vol 518-523 ◽  
pp. 2740-2744
Author(s):  
Ying Li ◽  
Chang Hai Li ◽  
Dong Mei Jia ◽  
Yue Jin Li
Keyword(s):  
Aqueous Solution ◽  
Adsorption Capacity ◽  
Acid Concentration ◽  
Ferric Oxide ◽  
Contact Time ◽  
Equilibrium Adsorption ◽  
Maximum Adsorption Capacity ◽  
Batch Experiments ◽  
Hydrated Ferric Oxide ◽  
Modified Resin

A newly modified resin can be impregnated with hydrated ferric oxide on the base of D301 resin. The article involved batch experiments to investigate the effect of concentration, contact time, pH and temperature. The results showed that the maximum adsorption was found at 6 h,3.0 pH and 298 K temperature. The maximum adsorption capacity was 961.95 mg/g at 1200 mg/L initial β-naphthalenesulfonic acid concentration. The equilibrium adsorption was fitted by Temkin isotherm.

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