Evaluation of iron oxide and aluminum oxide as potential arsenic(V) adsorbents

Jeong, Yong-Jin; Fan, Maohong; Singh, Shilpi; Chuang, Chih-Yu; Saha, Basudeb; Leeuwen, J. Hans van

doi:10.1016/j.cep.2007.05.004

Cited by 178 publications

(116 citation statements)

References 40 publications

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“…Basically, these two chemical criteria of S 5 and S 6 soils are supposed to be associated with the removal of maximum amount of As from the water column compared to remaining soils. Aluminum and iron oxides were found to be good and inexpensive adsorbents in removing As from water (Gulledge and O'Connor 1973;Jeong et al 2007). According to Zeng (2003), As (V) adsorption capacity of SiO 2 is very low and no adsorption efficiency was found for As(III).…”

Section: Resultsmentioning

confidence: 99%

Identification of potential soil adsorbent for the removal of hazardous metals from aqueous phase

Bhakta

Munekage

2012

Int. J. Environ. Sci. Technol.

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The present study attempted to identify the efficient hazardous metal-removing sorbent from specific types of soil, upper and middle layer shirasu, shell fossil, tuff, akadama and kanuma soils of Japan by physicochemical and metal (arsenic, cadmium and lead) removal characterizations. The physico-chemical characteristics of soil were evaluated using X-ray diffraction and scanning electron microscopy with energy dispersive spectroscopy techniques, whereas metal removal properties of soil were characterized by analyzing removal capacity and sorption kinetics of potential metal-removing soils. The chemical characteristics revealed that all soils are prevalently constituted of silicon dioxide (21.83-78.58 %), aluminum oxide (4.13-38 %) and ferrous oxide (0.835-7.7 %), whereas calcium oxide showed the highest percentage (65.36 %) followed by silicon dioxide (21.83 %) in tuff soil. The results demonstrated that arsenic removal efficiency was higher in elevated aluminum oxide-containing akadama (0.00452 mg/L/g/h) and kanuma (0.00225 mg/L/ g/h) soils, whereas cadmium (0.00634 mg/L/g/h) and lead (0.00693 mg/L/g/h) removal efficiencies were maximum in elevated calcium oxide-containing tuff soil. Physicochemical sorption and ion exchange processes are the metal removal mechanisms. The critical appraisal of three metal removal data also clearly revealed cadmium [ lead [ arsenic order of removal efficiency in different soils, except in tuff and akadama soils followed by lead [ cadmium [ arsenic. It clearly signified that each type of soil had a specific metal adsorption affinity which was regulated by the specific chemical composition. It may be concluded that akadama would be potential arsenicremoving and tuff would be efficient cadmium and leadremoving soil sorbents.

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Section: Resultsmentioning

confidence: 99%

Identification of potential soil adsorbent for the removal of hazardous metals from aqueous phase

Bhakta

Munekage

2012

Int. J. Environ. Sci. Technol.

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“…Highly concentrated arsenic waters in Romania were identified in the Saru Dornei region and in the Western Plain . On the one hand, water becomes contaminated with arsenic as a consequence of natural processes such as weathering, biological activity and volcanic emission and, on the other hand, as a result of various industrial discharges, such as waste incineration, petroleum refinery by-products and wastes, fertilizers, insecticides and herbicides (Borah et al 2009;Negrea et al 2008;Jeong et al 2007;Ohe et al 2005).…”

Section: Introductionmentioning

confidence: 99%

Adsorption of As(III) Ions onto Iron-Containing Waste Sludge

Negrea

Lupa

Ciopec

et al. 2010

Adsorption Science & Technology

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ABSTRACT:The adsorption performance of a low-cost adsorbent (IS), viz. an iron-containing waste sludge arising during a hot-dip galvanizing process, towards the removal of As(III) ions from synthetic aqueous solutions and natural underground water was examined. The adsorption process was best described by the pseudo-second-order kinetic equation. The equilibrium adsorption data were well described by the Langmuir model. The value of the dimensional separation factor, R L , indicated favourable adsorption. The maximum adsorption capacity of IS was 625 µg As(III)/g. The variation in the extent of adsorption with temperature was used to evaluate the thermodynamic parameters for the adsorption process. The values of ∆H 0 and ∆G 0 obtained demonstrated that the adsorption process was exothermic and spontaneous. The studied material exhibited an excellent As(III) ion adsorption performance from both synthetic solutions and a natural water sample. Moreover, no secondary contaminated substances arise if the exhausted adsorbent is recycled (e.g. in glass applications).

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“…Iron-rich and iron-oxide containing materials have been widely used as adsorbents namely for both phosphorus (Mayer and Jarrell 2000;Kang et al 2003;Chitrakar et al 2006) and arsenic (Jeong et al 2007;Hartley and Lepp 2008;Sabbatini et al 2009) …”

Section: Introductionmentioning

confidence: 99%

Magnetically modified natural biogenic iron oxides for organic xenobiotics removal

Šafařı́k¹,

Filip²,

Horska³

et al. 2013

Current Opinion in Biotechnology

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Biogenic iron oxides have been collected from a water stream and subsequently magnetically modified using water-based magnetic fluid. Both natural and magnetically modified materials have been characterized in detail using wavelength dispersive X-ray fluorescence spectrometry, X-ray powder diffraction, Mössbauer spectroscopy, electron microscopy and BET surface area measurements. The natural material is composed of 2-line ferrihydrite, forming hollow microtubules-sheaths of Leptothrix ochracea, and detrital components. As a result of the ferrofluid modification, maghemite nanoparticles were identified on the surface of the treated material. The active surface area of the bulk, magnetically-modified sample was 148 m 2 g -1 .The magnetically modified material was tested as inexpensive magnetically responsive adsorbent for the removal of selected organic xenobiotics, namely organic dyes, from aqueous solutions. The observed maximum adsorption capacities ranged between 34.3 and 97.8 mg of dye per 1 g of adsorbent.

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Evaluation of iron oxide and aluminum oxide as potential arsenic(V) adsorbents

Cited by 178 publications

References 40 publications

Identification of potential soil adsorbent for the removal of hazardous metals from aqueous phase

Identification of potential soil adsorbent for the removal of hazardous metals from aqueous phase

Adsorption of As(III) Ions onto Iron-Containing Waste Sludge

Magnetically modified natural biogenic iron oxides for organic xenobiotics removal

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