Adsorption of arsenic from aqueous solution on synthetic hydrous stannic oxide

Manna, Biswaranjan; Ghosh, Uday Chand

doi:10.1016/j.jhazmat.2006.10.066

Cited by 101 publications

(44 citation statements)

References 40 publications

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“…Many countries have been suffering from serious arsenic pollution, such as China, Japan, Bangladesh, India, etc. [1]. The maximum contaminant level (MCL) of arsenic in drinking water was recommended by the World Health Organization (WHO) to be of 10 g/L in 2006 [2].…”

Section: Introductionmentioning

confidence: 99%

Adsorptive removal of arsenic from aqueous solution by zeolitic imidazolate framework-8 (ZIF-8) nanoparticles

Jian

Liu

Zhang

et al. 2015

Colloids and Surfaces A: Physicochemical and Engineering Aspect

485

191

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Section: Introductionmentioning

confidence: 99%

Adsorptive removal of arsenic from aqueous solution by zeolitic imidazolate framework-8 (ZIF-8) nanoparticles

Jian

Liu

Zhang

et al. 2015

Colloids and Surfaces A: Physicochemical and Engineering Aspect

485

191

View full text Add to dashboard Cite

“…The application of low-cost and easily available materials has been widely used for phosphate removal. These include layered double hydroxides (Chitrakar et al 2005), individual and mixed hydrous oxides (Borggaard et al 2005;Manna and Ghosh 2007;Chubar et al 2005;Harvey and Rhue 2008), metal oxides , hybrid materials (Mulinari et al 2007;Blaney et al 2007), red mud (Huang et al 2008), goethite (Luengo et al 2006;Zhong et al 2007;Nowack and Stone 2006) and steel slag (Xiong et al 2008). Among these materials, hydrous metal oxides have a relatively strong affinity to phosphate (Antelo et al 2007).…”

Section: Introductionmentioning

confidence: 99%

Adsorption kinetic, thermodynamic and desorption studies of phosphate onto hydrous niobium oxide prepared by reverse microemulsion method

Rodrigues

Silva

2010

Adsorption

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A type of Nb 2 O 5 ·3H 2 O was synthesized and its phosphate removal potential was investigated in this study. The kinetic study, adsorption isotherm, pH effect, thermodynamic study and desorption were examined in batch experiments. The kinetic process was described by a pseudo-second-order rate model very well. The phosphate adsorption tended to increase with a decrease of pH. The adsorption data fitted well to the Langmuir model with which the maximum P adsorption capacity was estimated to be 18.36 mg-P g −1 . The peak appearing at 1050 cm −1 in IR spectra after adsorption was attributed to the bending vibration of adsorbed phosphate. The positive values of both H°and S°suggest an endothermic reaction and increase in randomness at the solid-liquid interface during the adsorption. G°values obtained were negative indicating a spontaneous adsorption process. A phosphate desorbability of approximately 68% was observed with water at pH 12, which indicated a relatively strong bonding between the adsorbed phosphate and the sorptive sites on the surface of the adsorbent. The immobilization of phosphate probably occurs by the mechanisms of ion exchange and physicochemical attraction. Due to its high adsorption capacity, this type of hydrous niobium oxide has the potential for application to control phosphorus pollution.

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“…From the figure it is observed that the adsorption is the rapid in the initial stages and gradually decreases with progress of adsorption. The plots are single, smooth, and continuous curves leading to saturation, suggesting the possible monolayer coverage to arsenate on the surface of the adsorbent [26,27].…”

Section: Effect Of Initial Arsenate Concentrationmentioning

confidence: 97%

Studies on the Removal of Arsenate by Electrochemical Coagulation Using Aluminum Alloy Anode

Vasudevan

Lakshmi

Sozhan

2010

CLEAN Soil Air Water

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The removal of arsenate from aqueous solution was carried out by electrochemical coagulation using aluminum alloy as anode and stainless steel as cathode. Various operating parameters on the removal efficiency of arsenate were investigated, such as initial arsenate ion concentration, initial pH, current density, and temperature. Effect of coexisting anions such as silicate, fluoride, phosphate, and carbonate were studied on the removal efficiency of arsenate. The optimum removal efficiency of 98.4% was achieved at a current density of 0.2 A/dm 2 at a pH of 7.0. The experimental data were tested against different adsorption isotherm models for describing the electrochemical coagulation process. The adsorption of arsenate preferably fitting the Langmuir adsorption isotherm suggests monolayer coverage of adsorbed molecules. First and second order rate equations were applied to study adsorption kinetics. The adsorption process follows second order kinetics model with good correlation. Temperature studies showed that adsorption was endothermic and spontaneous in nature.

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Adsorption of arsenic from aqueous solution on synthetic hydrous stannic oxide

Cited by 101 publications

References 40 publications

Adsorptive removal of arsenic from aqueous solution by zeolitic imidazolate framework-8 (ZIF-8) nanoparticles

Adsorptive removal of arsenic from aqueous solution by zeolitic imidazolate framework-8 (ZIF-8) nanoparticles

Adsorption kinetic, thermodynamic and desorption studies of phosphate onto hydrous niobium oxide prepared by reverse microemulsion method

Studies on the Removal of Arsenate by Electrochemical Coagulation Using Aluminum Alloy Anode

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