Arsenic removal from real-life groundwater by adsorption on laterite soil

Maji, Sanjoy Kumar; Pal, Anjali; Pal, Tarasankar

doi:10.1016/j.jhazmat.2007.06.060

Cited by 153 publications

(110 citation statements)

References 27 publications

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“…According to Guo and Barnard (2013) there are 14 species of iron oxides, ten of which occur in nature, the most abundant being goethite (α-FeOOH), hematite (α-Fe 2 O 3 ) and magnetite (Fe 3 O 4 ), followed by ferrihydrite [Fe 10 O 14 (OH) 2 ] (Michel et al, 2007), maghemite (γ-Fe 2 O 3 ) and lepidocrocite (γ-FeOOH). These iron oxides are responsible for the mobility and fate of numerous chemical species in soils and aquatic environments through adsorption processes, particularly onto goethite and ferrihydrite (Maji et al, 2008;Swedlund et al, 2009;Villalobos and Antelo, 2011) or through adsorption followed by reduction mechanisms as is the case of susceptible species on magnetite (Villacís-García et al, 2015).…”

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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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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“…Continued ingestion of arsenic for a long period leads to chronic arsenic poisoning; acute poisoning typically include vomiting, oesophageal and abdominal pain, diarrhoea, skin lesions, cancer of the skin, lungs, urinary bladder, and kidney, as well as other skin changes such as pigmentation changes and thickening (hyperkeratosis), black foot disease (Rahman et al 2005;Atkins et al 2007;Yoshida et al 2004;Chaudhuri et al 2008;Pandey et al 2002;Jack et al 2003;Duker et al 2005;Tseng et al 2005). Because of high impact on human health even at low concentrations several regulating agencies set their maximum contamination level of arsenic in drinking water values e.g., World Health Organization as 0.01 mg/l, French as 0.015 mg/l, United State Environmental Protection Agency as 0.01 mg/l, Vietnam and Mexico as 0.05 mg/l, European Union as 0.01 mg/l, Australia as 0.007 mg/l, Germany as 0.01 mg/l, Bangladesh and India as 0.05 mg/l (Anawar et al 2003;Choong et al 2007;Maji et al 2008;Zhu et al 2009;Barakat and Sahiner 2008;Mohapatra et al 2008). Various methods are available in the literature such as ion-exchange, solvent extraction, chemical precipitation, membrane processes, electrocoagulation and adsorption (Mohan and Pittman 2007;Lataye et al 2009;Suresh et al 2010).…”

Section: Introductionmentioning

confidence: 99%

Biosorptive behaviour of mango leaf powder and rice husk for arsenic(III) from aqueous solutions

Kamsonlian

Suresh

Ramanaiah

et al. 2012

Int. J. Environ. Sci. Technol.

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The present study deals with the biosorption of As(III) from aqueous solution using mango leaves powder (MLP) and rice husk (RH) in a batch operation. Scanning electron microscopy and Fourier transformation infrared spectrometry analysis shows the surface texture of biosorbents and metal binding of functional groups of before and after biosorption of As(III). The optimum pH was obtained at 7 and 6 with 7 and 6 g/l of dosage of MLP and RH, respectively. The adsorption of As(III) onto MLP and RH was favourably influenced by an increase in temperature. Equilibrium data were well represented by the Freundlich isotherm model. Nitric acid and ethylenediaminetetra acetic acid was found to be a better eluant for the desorption followed by hydrochloric acid and sodium hydroxide of As(III) with a maximum desorption efficiency of 69.5, 48.5 and 79.4, 86.3 %, respectively. The pseudosecond-order kinetic model was found to best fitted of the experimental data over the equilibrium time at 32 h. The positive values of heat of adsorption (23.89 kJ/mol for MLP and 52.26 kJ/mol for RH) indicate the endothermic nature of the adsorption process. The thermodynamic study showed the spontaneous nature of the sorption of As(III) onto MLP and RH.

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“…If E is lower than 20 kJ mol -1 the adsorption process is called physisorption, if it is between 20-40 kJ mol -1 the process is known as ionic exchange, and when E is larger than 40 kJ mol -1 it is a chemisorption process. The Gibbs free energy (ΔG) indicates the energy required to displace the adsorbate onto the surface of the adsorbent 31 and was calculated according to equation (4).…”

Section: Adsorption Energymentioning

confidence: 99%

Study of the Adsorption of Arsenic (III and V) by Magnetite Nanoparticles Synthetized via AACVD

et al. 2016

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Globally, water pollution is mainly caused by the presence of heavy metals and metalloids such as arsenic. The majority of the techniques employed in the removal are of low efficiency and high cost. Therefore, in this work it is presented the adsorption processes of arsenic (As III and V) ions employing magnetite nanoparticles (MNPs) synthesized by the aerosol assisted chemical vapor deposition (AACVD) process. The adsorption efficiency was determined at different times and concentrations. The remaining As concentration in the solutions was analyzed by atomic absorption spectroscopy. The adsorbed As ions on the surface of the NMPs was analyzed by high resolution transmission electron microscopy. The results showed an overall removal efficiency of 87% for As +3 and 98% for As +5, in a contact time of 15 minutes. Results suggested the use of NMPs as a promising alternative in the removal of As ions in water.

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Arsenic removal from real-life groundwater by adsorption on laterite soil

Cited by 153 publications

References 27 publications

Laboratory synthesis of goethite and ferrihydrite of controlled particle sizes

Laboratory synthesis of goethite and ferrihydrite of controlled particle sizes

Biosorptive behaviour of mango leaf powder and rice husk for arsenic(III) from aqueous solutions

Study of the Adsorption of Arsenic (III and V) by Magnetite Nanoparticles Synthetized via AACVD

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