Preparation and characterization of chemically activated carbons derived from Mediterranean Posidonia oceanica (L.) fibres

Ncibi, Mohamed Chaker; Ranguin, Ronald; Pintor, Marie-Julie; Jeanne-Rose, Valérie; Sillanpää, Mika; Gaspard, Sarra

doi:10.1016/j.jaap.2014.06.010

Cited by 58 publications

(15 citation statements)

References 33 publications

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“…Furthermore, the Brouser-Weron-Sototlongo kinetic model states additional notable data which is the time important to adsorb half the maximum amount (t bws,a ). Brouser-WeronSototlongo kinetic model has a good fitting performance; it states such quality data (i.e., adsorption capacity close to experimental data, qe(BWS), and the time of half reaction (t bws,a ) which are very useful for an industrial treatment design (Ncibi et al 2014). For Fractal-like models, such as Fractal-like pseudo first order, Fractal-like pseudo second order, Fractal-like exponential, Fractal-like mixed first, second order) the rate coefficient for adsorption is measured as a function of time using the Fractal-like idea.…”

Section: Kinetic Studymentioning

confidence: 90%

Equilibrium isotherm and kinetic studies for the simultaneous removal of phenol and cyanide by use of S. odorifera (MTCC 5700) immobilized on coconut shell activated carbon

Singh

Balomajumder

2016

Appl Water Sci

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In this study, simultaneous removal of phenol and cyanide by a microorganism S. odorifera (MTCC 5700) immobilized onto coconut shell activated carbon surface (CSAC) was studied in batch reactor from mono and binary component aqueous solution. Activated carbon was derived from coconut shell by chemical activation method. Ferric chloride (Fecl 3 ), used as surface modification agents was applied to biomass. Optimum biosorption conditions were obtained as a function of biosorbent dosage, pH, temperature, contact time and initial phenol and cyanide concentration. To define the equilibrium isotherms, experimental data were analyzed by five mono component isotherm and six binary component isotherm models. The higher uptake capacity of phenol and cyanide onto CSAC biosorbent surface was 450.02 and 2.58 mg/g, respectively. Nonlinear regression analysis was used for determining the best fit model on the basis of error functions and also for calculating the parameters involved in kinetic and isotherm models. The kinetic study results revealed that Fractal-like mixed first second order model and Brouser-Weron-Sototlongo models for phenol and cyanide were capable to offer accurate explanation of biosorption kinetic. According to the experimental data results, CSAC with immobilization of bacterium S. odorifera (MTCC 5700) seems to be an alternative and effective biosorbent for the elimination of phenol and cyanide from binary component aqueous solution.

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Section: Kinetic Studymentioning

confidence: 90%

Equilibrium isotherm and kinetic studies for the simultaneous removal of phenol and cyanide by use of S. odorifera (MTCC 5700) immobilized on coconut shell activated carbon

Singh

Balomajumder

2016

Appl Water Sci

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“…As presented in Table 4, with respect to initial arsenic concentration, 21.16453 min and 17.33022 min (lowest value) were enough for TW/MnFe 2 O 4 composite to achieve half of the As(III) and As(V) uptake capacities, respectively, which is important as well as valuable parameter for computing the reaction speed. As for BWS model itself, it has a good fitting behaviour, and more implicitly, it conveys such quality data (i.e., adsorption capacity nearest to experimental value, q e(BWS) , and the time of half reaction, s nBWS,a ) which are very esteemed aimed at industrial treatment design purposes (Ncibi et al 2014).…”

Section: Biosorption Kinetic Studiesmentioning

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

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“…As for the BWS model itself, it has a good fitting behavior and more implicitly, it conveys such quality data (i.e. biosorption/bioaccumulation capacity nearest to experimental value, q e(BWS) , and the time of half reaction, τ nBWS,α ) which are very important aimed at industrial treatment design purposes (Ncibi et al, 2014). On the basis of correlation coefficient (R, R 2 and ̅ R 2 ) and error values (SSE, Reduced χ 2 and Root-MSE), it can be concluded that other kinetic models, such as Avrami, mixed 1,2 order, modified second order, Ritchie second order, Fractal-like pseudo first order, Fractal-like pseudo second order, Fractal-like exponential, and Fractal-like mixed 1,2 order exhibited good fitting of biosorption/ bioaccumulation kinetic data for both As(III) and As(V) on immobilized bacterial cells.…”

Section: Adsorbentsmentioning

confidence: 99%

Kinetic, mechanistic and thermodynamic studies of removal of arsenic using Bacillus arsenicus MTCC 4380 immobilized on surface of granular activated carbon/MnFe2O4 composite

Podder

Majumder

2016

Groundwater for Sustainable Development

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Preparation and characterization of chemically activated carbons derived from Mediterranean Posidonia oceanica (L.) fibres

Cited by 58 publications

References 33 publications

Equilibrium isotherm and kinetic studies for the simultaneous removal of phenol and cyanide by use of S. odorifera (MTCC 5700) immobilized on coconut shell activated carbon

Equilibrium isotherm and kinetic studies for the simultaneous removal of phenol and cyanide by use of S. odorifera (MTCC 5700) immobilized on coconut shell activated carbon

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

Kinetic, mechanistic and thermodynamic studies of removal of arsenic using Bacillus arsenicus MTCC 4380 immobilized on surface of granular activated carbon/MnFe2O4 composite

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