SD/MnFe2O4 composite, a biosorbent for As(III) and As(V) removal from wastewater: Optimization and isotherm study

Podder, M.S.; Majumder, C. B.

doi:10.1016/j.molliq.2015.09.011

Cited by 59 publications

(18 citation statements)

References 132 publications

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“…A C C E P T E D M A N U S C R I P T 5 GO@Fe 3 O 4 NPs has a high surface area, and it is highly stable, very high adsorption capability, strong acid resistance, and also easy to separate from liquid phase, which can facilitate to the removal of various dyes and heavy metals from the environmental pollutant [7,8,[13][14][15].This is especially true for magnetic-based adsorbents that are typically most environmental friendly and cost effective [7].…”

Section: Accepted Manuscriptmentioning

confidence: 99%

“…of the magnetite Fe 3 O 4 NPs, the intense diffraction peaks at 2θ = 30.3°, 35.7°, 43.2°, 53.3° and 56.9° which can be indexed to (planes of the cubic lattice of Fe 3 O 4 NPs respectively(Fig.3D)[13]. After Fe 3 O 4 NPs functionalized with GO@β-CD, the XRD spectra were slightly changed in peak positions, suggesting that the crystal structure of Fe 3 O 4 NPs were affected by the functionalization of GO@β-CDs hybrid(Fig.3E)[8,14].…”

mentioning

confidence: 99%

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Synthesis of magnetically separable and recyclable magnetic nanoparticles decorated with β-cyclodextrin functionalized graphene oxide an excellent adsorption of As(V)/(III)

Kumar

Jiang

2017

Journal of Molecular Liquids

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Section: Accepted Manuscriptmentioning

confidence: 99%

mentioning

confidence: 99%

Synthesis of magnetically separable and recyclable magnetic nanoparticles decorated with β-cyclodextrin functionalized graphene oxide an excellent adsorption of As(V)/(III)

Kumar

Jiang

2017

Journal of Molecular Liquids

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“…It has often been observed, however, that one can fit different types of isotherm equations to the same experimental data with nearly equal success [10][11][12][13][14][15][16][17][18][19][20][21][22][23]. In such case one may try to improve the measurement precision so that a clear distinction be possible.…”

Section: Introductionmentioning

confidence: 99%

Relationship between Commonly Used Adsorption Isotherm Equations Impedes Isotherm Selection

Dorkó

Szakolczai

Tóth

et al. 2017

Period. Polytech. Chem. Eng.

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“…Podder and Majumder (2016) examined the potential of SD/MnFe 2 O 4 composite to biosorb both As(III) and As(V) in batch experimentations targeting the treatment of wastewater with high concentrations. Podder and Majumder (2015) also reported the use of GAC/ MnFe 2 O 4 composite for the removal of arsenic from wastewater. But compared to those, adsorbent/biosorbent TW/MnFe 2 O 4 composite is cost-effective because tea waste is a household waste and is readily available and cheap.…”

Section: Introductionmentioning

confidence: 99%

Biosorption of As(III) and As(V) on the surface of TW/MnFe2O4 composite from wastewater: kinetics, mechanistic and thermodynamics

Podder

Majumder

2016

Appl Water Sci

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In the present study, TW/MnFe 2 O 4 composite (MTW) was synthesized and estimated as an effective biosorbent for removing As (III) and As(V) from wastewater. Physicochemical analysis of composite was performed through SEM-EDX. 86.615 and 83.478% removal efficiency were obtained by composite dosage of 2 g/L at contact time 120 min at temperature 30°C and pH 7.0 and 4.0 for As(III) and As(V), respectively. Kinetic results study showed that Brouers-Weron-Sotolongo and Ritchie second-order for As(III) and Brouers-Weron-Sotolongo model for As(V) were capable to describe an accurate explanation of adsorption kinetic. Applicability of mechanistic models in the current study exposed that the rate-controlling step in the biosorption of both As(III) and As(V) on the surface of composite was film diffusion rather than intraparticle diffusion. The estimated thermodynamic parameters DG 0 , DH 0 and DS 0 revealed that the biosorption of both As(III) and As(V) on the composite was feasible, spontaneous and exothermic.The concentration of arsenic on the adsorbent and in the solution (mg/L)The intercept of the intraparticle diffusion plot (mg/g) dThe thickness of the water film adhered to the adsorbent (cm)The involvement of pseudo second-order model f eqThe Langmuir batch equilibrium factor h The initial adsorption rate (mg/g min) kThe fractal-like mixed 1, 2 order rate coefficientThe modified second-order rate coefficient (1/min) k 00 2RThe Ritchie second-order rate coefficient (1/min) k AV The Avrami kinetic rate coefficient (1/min) k a,obsThe acquired rate coefficients of adsorption An integer that describes infinite series solution nThe number of observations in the experimental study n AV Constant corresponding to the mechanism of adsorption n BWS A fractional reaction order n R Number of surface sites pThe number of parameters to be estimated q eThe amount of adsorbate adsorbed on the adsorbent surface at equilibrium (mg/g) q mThe adsorption capacity q tThe amount of adsorbate adsorbed on the adsorbent surface at time t (mg/g) q t,expThe biosorption capacity observed from the batch experiment after time t (mg/g) q t,model The calculation from the kinetic model corresponding to C t r Mean radius of adsorbent particle (assumed spherical) (cm) r aThe rate of adsorption r dThe rate of desorption R The universal gas constant (8.314 J/mol K) R e % removal

show abstract

SD/MnFe2O4 composite, a biosorbent for As(III) and As(V) removal from wastewater: Optimization and isotherm study

Cited by 59 publications

References 132 publications

Synthesis of magnetically separable and recyclable magnetic nanoparticles decorated with β-cyclodextrin functionalized graphene oxide an excellent adsorption of As(V)/(III)

Synthesis of magnetically separable and recyclable magnetic nanoparticles decorated with β-cyclodextrin functionalized graphene oxide an excellent adsorption of As(V)/(III)

Relationship between Commonly Used Adsorption Isotherm Equations Impedes Isotherm Selection

Biosorption of As(III) and As(V) on the surface of TW/MnFe2O4 composite from wastewater: kinetics, mechanistic and thermodynamics

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