Correction to ‘Cost allocation in water resources development’ by H. P. Young, N. Okada, and T. Hashimoto

Young, H. Peyton; Okada, Norio; Hashimoto, T.

doi:10.1029/wr018i005p01597

Cited by 7 publications

(11 citation statements)

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“…Various technologies such as adsorption, ion exchange, precipitation, electro-dialysis and reverse osmosis have been employed for fluoride removal from water [4][5][6][7]. Several conventional and non-conventional adsorbents were studied for their fluoride adsorption capacities [8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Studies on fluoride adsorption capacities of amorphous Fe/Al mixed hydroxides from aqueous solutions

Sujana

Soma

Vasumathi

et al. 2009

Journal of Fluorine Chemistry

139

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Section: Introductionmentioning

confidence: 99%

Studies on fluoride adsorption capacities of amorphous Fe/Al mixed hydroxides from aqueous solutions

Sujana

Soma

Vasumathi

et al. 2009

Journal of Fluorine Chemistry

139

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“…Different techniques viz. precipitation, adsorption, coagulation, membrane separation have been used previously for de-fluoridation of drinking water [7,8,9].…”

Section: Introductionmentioning

confidence: 99%

Fluoride Removal Performance of a Synthesized Adsorbent

Solanki¹,

Agarwal²,

Gupta³

et al. 2019

JEES

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Fluoride contamination of water is a major problem in India. World Health Organization (WHO 2004) recommends an upper limit of 1.5 mg/L fluoride in drinking water. Present study reveals performance evaluation studies of Al-Fe-Ac based adsorbent for the fluoride removal from drinking water. The prepared adsorbent was characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM).The material retained amorphous structure and maintained relatively stable fluoride adsorption performance at calcination temperatures around 300 ºC. The optimum pH range for fluoride adsorption was 6.0-7.0 and the adsorbent also showed high defluoridation ability around pH 5.5-7.5, which is preferable for actual application. A high fluoride adsorption capacity of 4.5 mg/g was acquired for fluoride concentration of 50 mg/L, adsorbent dose of 1g/L and pH 7.0. Synthetic samples having fluoride concentration 2 to 10 mg/L were treated at optimized dosage and residual fluoride was reduced to 0.1 to 1.4 ppm with different adsorbent dose. Residual aluminium in treated water was well within WHO norms for drinking water.

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“…Therefore, the removal of fluoride from soils and waters is very important in the areas of high fluoride concentration for preventing fluorosis. Recently, the removal of fluoride from aqueous solutions via adsorption has attracted much attention [3][4][5]. Montmorillonite, a low-cost and easily obtained clay mineral, is a high effective adsorbent for cations [6,7].…”

Section: Introductionmentioning

confidence: 99%

“…( 2)-( 3), respectively. q e =q max .b.c e /(1+b.c e ) ( 2) q e =k.c e 1/n (3) where q e the amount adsorbed at equilibrium (mg/g) and C e is the equilibrium concentration (mg/L) for Langmuir and Frieundlich models; q max is the adsorption capacity (mg/g) and b is the energy constant for Langmuir model. The k and n is Frieundlich constants related to the adsorption capacity and intensity, respectively [6,9].…”

mentioning

confidence: 99%

Adsorption Removal of Fluoride from Aqueous Solution by Hydroxy-Iron Pillared Montmorillonite

Chen

Deng

2013

AMR

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Hydroxy-iron pillared montmorillonite (Fe-Mont) was prepared and characterized, and the fluoride adsorption capacity of Fe-Mont was investigated. Compared to pure montmorillonite (Mont), the interlayer spacing, specific surface area (SSA), surface fractal dimension and isoelectric point (IEP) of Fe-Mont increased. At pH 4.5, the Langmuir adsorption capacity (qmax) for fluoride of Mont and Fe-Mont was 4.23 and 6.92 mg/g, respectively. The adsorption data for fluoride by Fe-Mont could be fitted by Langmuir model (R2 =0.986) and also by Freundlich isotherm (R2 =0.948), and indicating that the monolayer and multilayer adsorption behaviors are simultaneously involved in the fluoride adsorption processes of Fe-Mont.

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Correction to ‘Cost allocation in water resources development’ by H. P. Young, N. Okada, and T. Hashimoto

Cited by 7 publications

References 0 publications

Studies on fluoride adsorption capacities of amorphous Fe/Al mixed hydroxides from aqueous solutions

Studies on fluoride adsorption capacities of amorphous Fe/Al mixed hydroxides from aqueous solutions

Fluoride Removal Performance of a Synthesized Adsorbent

Adsorption Removal of Fluoride from Aqueous Solution by Hydroxy-Iron Pillared Montmorillonite

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