Physicochemical Characterization of Granular Ferric Hydroxide (GFH) for Arsenic(V) Sorption from Water

Saha, Basudeb; Bains, R.; Greenwood, F. G.

doi:10.1080/01496390500333202

Cited by 64 publications

(41 citation statements)

References 37 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…GFH consists of ferric hydroxide and oxyhydroxide with dry solid content 57% (±10%) by mass, and 43-48% by mass moisture content. Iron content is 610 g/kg (±10%) relative to dry solids [40][41][42][43][44][45]. Tables 1 and 2 include the basic physical-chemical properties and chemical composition of the select sorption materials used in the test.…”

Section: Adsorbentsmentioning

confidence: 99%

The Use of Iron-Based Sorption Materials and Magnetic Fields for the Removal of Antimony from Water

Ilavský¹,

Barloková²,

Munka³

2015

Pol. J. Environ. Stud.

View full text Add to dashboard Cite

Elemental antimony (Sb) is a silvery white, brittle solid that, along with arsenic and bismuth, belongs to group VA of the periodic table. It is classified as both a metal and a metalloid.Antimony is present in the Earth's crust at a concentration of about 0.2-0.5 mg/kg. It is seldom found in the environment as a pure element, but it is often found as trivalent and pentavalent sulphides and chlorides. Antimony may enter the aquatic environment by way of natural weathering of rocks, runoff from soils, effluents from mining and manufacturing operations, and industrial and municipal leachate discharges.Antimony is present in water as Sb Antimony is a toxic heavy metal with effects similar to those of arsenic and lead. Intoxication by antimony is not as severe as that from arsenic, since the antimony compounds are absorbed more slowly. The findings on the health aspects of certain heavy metals in drinking water are included in several publications [3][4][5]. The World Health Organization and institutions dealing with monitoring carcinogens have not yet classified antimony as a carcinogen.Pol. J. Environ. Stud. Vol. 24, No. 5 (2015), 1983-1992 Original Research AbstractThe objective of this work was to verify the sorption properties of granular filter materials (GEH, CFH12, Bayoxide E33) during the process of removing antimony from water, and to monitor the impact of magnetic and electromagnetic fields on the effectiveness of removing antimony from water. Pilot tests showed that the use of iron-based sorption materials could possibly decrease the antimony content in water to the values limited for drinking water (5 µg/L Sb). The most suitable adsorbent for removing antimony was GEH. At a concentration of antimony in raw water of 81.4 µg/L and a filtration rate of 3.4 m/h, a value of bed volume 2,030 and adsorption capacity of 144.7 µg/g was determined; at the filtration rate of 5.6 m/h, the bed volume was 1,342, and the adsorption capacity was 96.8 µg/g achieved at breakthrough concentration 5 μg Sb/L. The results presented from testing the effects of a permanent magnet and electromagnet in removing antimony are not well known, as only a few experiments have been conducted.

show abstract

Section: Adsorbentsmentioning

confidence: 99%

The Use of Iron-Based Sorption Materials and Magnetic Fields for the Removal of Antimony from Water

Ilavský¹,

Barloková²,

Munka³

2015

Pol. J. Environ. Stud.

View full text Add to dashboard Cite

show abstract

“…Akaganeite is rare in nature (Murad and Bishop 2000). Use of GFH as an adsorbent to remove arsenic has been investigated previously (Saha et al 2005).…”

Section: Introductionmentioning

confidence: 99%

“…Granular ferric hydroxide (GFH) is a poorly crystallized b-FeOOH and resembles the mineral Akaganeite, which contains chloride, to improve the structure of the adsorbent (Saha et al 2005). Akaganeite is rare in nature (Murad and Bishop 2000).…”

Section: Introductionmentioning

confidence: 99%

Adsorptive separation of phosphate oxyanion from aqueous solution using an inorganic adsorbent

Saha

Griffin

Blunden

2010

Environ Geochem Health

Self Cite

View full text Add to dashboard Cite

Phosphate removal from aqueous solution was explored using granular ferric hydroxide (GFH) as an inorganic adsorbent. Adsorption, desorption and kinetic studies were conducted on laboratory scale to evaluate the performance of GFH as an adsorbent for low concentrations of phosphate solution. The effect of pH on adsorption was investigated, and phosphate uptake was shown to decrease with an increase in solution pH, with maximum removal seen to occur at pH 3. The experimental data best fit the Temkin isotherm at both pH 3 and 4. Uptake of phosphate by GFH follows second-order kinetics, with the small particle range (76-200 microm) removing phosphate from the solution more rapidly than the larger particle range (710-850 microm). The kinetic results suggest that intra-particle diffusion is an important factor in phosphate adsorption onto GFH. Thermodynamic parameters (DeltaG degrees, DeltaH degrees, DeltaS degrees) were evaluated, and the results indicated that the adsorption process was endothermic and spontaneous. This study demonstrates that GFH has potential to be used as a cost-effective adsorbent for phosphate removal from aqueous solution.

show abstract

“…Today there is a large number of publications available, dealing with arsenic or antimony removal from water using different sorption materials (Mohan, Pittman 2007;Ilavský et al 2015;Westerhoff et al 2005;Rubel 2003;Sperlich et al 2005;Saha et al 2005;Jekel, Seith 2000;Guan et al 2008;Biela, Kučera 2016). The most frequently reported results are from experiments using ferrous sorption materials (oxides, oxihydroxides, or hydroxides of iron), also known as GEH, Bayoxide E33, CFH12, CFH18, Everzit As, etc.…”

Section: Introductionmentioning

confidence: 99%

Removal of Antimony from Water Using GEH Sorption Material at Different Filter Bed Volumes

Barloková

Ilavský

Munka

2017

Proccedings of 10th International Conference "Environmental Engineering"

View full text Add to dashboard Cite

Abstract. The article presents the results of antimony removal from the water at Dúbrava water resource using GEH sorption material at three different amounts (volumes) of the filter bed. Based on the results of the experiment we calculated the linear dependences of the amount (volume) of the bed and the absorption capacity, the time of contact of water with the material, bed volume (V/V0 ratio), the duration of filtration and the adsorbed antimony volume in the filter bed. These values were determined for antimony concentrations of 5 µg/L at the outlet from the filter columns, i.e. for limit concentrations of antimony in drinking water, with an average concentration of antimony in raw water being 90.3 µg/L and the average filtration rate being in the range from 5.3 to 5.4 m/h.

show abstract

Physicochemical Characterization of Granular Ferric Hydroxide (GFH) for Arsenic(V) Sorption from Water

Cited by 64 publications

References 37 publications

The Use of Iron-Based Sorption Materials and Magnetic Fields for the Removal of Antimony from Water

The Use of Iron-Based Sorption Materials and Magnetic Fields for the Removal of Antimony from Water

Adsorptive separation of phosphate oxyanion from aqueous solution using an inorganic adsorbent

Removal of Antimony from Water Using GEH Sorption Material at Different Filter Bed Volumes

Contact Info

Product

Resources

About