Synthesis, characterization and application of goethite mineral as an adsorbent

Jaiswal, Amita; Banerjee, Sushmita; Mani, Raj; Chattopadhyaya, M. C.

doi:10.1016/j.jece.2013.05.007

Cited by 81 publications

(48 citation statements)

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“…Copper (Cu(II)) has 10 considered as one of the most harmful metal due to their toxicity at 11 ultra concentration and non-biodegradability [4]. Discharge of Cu 12 (II) ions into waste water from different industrial process such as 13 electroplating, paint, metal finishing, mining operations, chemical 14 manufacturing, fertilizers and pigment industries have potential 15 health hazard for human and aquatic ecosystem [5]. Although 16 copper is essential micronutrient for animals and takes part as a 17 cofactor in many metalloproteins and as an activator of some 18 enzyme systems [6].…”

Section: Introductionmentioning

confidence: 99%

Copper adsorption onto synthesized nitrilotriacetic acid functionalized Fe3O4 nanoparticles: kinetic, equilibrium and thermodynamic studies

Singh

Verma

Gautam

et al. 2015

Journal of Environmental Chemical Engineering

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Section: Introductionmentioning

confidence: 99%

Copper adsorption onto synthesized nitrilotriacetic acid functionalized Fe3O4 nanoparticles: kinetic, equilibrium and thermodynamic studies

Singh

Verma

Gautam

et al. 2015

Journal of Environmental Chemical Engineering

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“…The precipitation technique is probably the simplest and most efficient chemical pathway to obtain iron oxide particles. Iron oxides (goethite, magnetite or maghemite) are usually prepared by addition of alkali to iron salt solutions and keeping the precipitated solids in suspension for aging (Guyodo et al, 2003;Jaiswal et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

Laboratory synthesis of goethite and ferrihydrite of controlled particle sizes

Villacís-García¹,

Ugalde-Arzate²,

Vaca-Escobar³

et al. 2015

BSGM

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Iron oxyhydroxides, such as goethite and ferrihydrite, are highly abundant and ubiquitous minerals in geochemical environments. Because of their small particle sizes, their surface reactivity is high towards adsorption of anions and cations of environmental relevance. For this reason these minerals are extensively studied in environmental geochemistry, and also are very important for environmental and industrial applications. In the present work, we report the synthesis and characterization of goethite and ferrihydrite of controlled particle sizes. It has been shown that surface reactivity of these minerals is highly dependent on crystal sizes, even after normalizing by specific surface area. In order to investigate the reasons for this changing reactivity it is necessary to work with reproducible particle sizes of these minerals. We investigated here the experimental conditions to synthesize goethite samples of four different specific surface areas: ca. 40, 60, 80 and 100 m 2 g -1 , through the controlled speed of hydroxide addition during hydrolysis of acid Fe(III) solutions. In the case of 2-line ferrihydrite, samples with two different particle sizes were prepared by changing the aging time under the pH conditions of synthesis (pH = 7.5). The synthesized minerals were identified and characterized by: X-ray diffraction, N 2 adsorption BET specific surface area, transmission electron microscopy, attenuated total reflectance Fourier transform infrared spectroscopy, and maximum Cr(VI) adsorption.Keywords: synthesis, iron oxides, specific surface area, goethite, ferrihydrite, particle size. Resumen

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“…(a), goethite has sharp IR bands at 798 and 892 cm -1 due to Fe-O-H bending vibration, where the 657 cm -1 band relates to Fe-O stretching vibration of goethite(Jaiswal, Banerjee, Mani & Chattopadhyaya, 2013). The IR band at 468 cm -1 was assigned to an anti-symmetric Fe-O-H stretching band of goethite(Cambier, 1986), while cellulose has bands for O-CH in-plane bending vibration (1423 cm -1 ), COC, CCO and CCH deformation and stretching (895 cm -1 ), C-OH out-of-plane bending at 662 cm -1(Fan, Dai & Huang, 2012).…”

mentioning

confidence: 99%