Characterisation of novel modified active carbons and marine algal biomass for the selective adsorption of lead

Malik, Danish J.; Стрелко, В. В.; Streat, M.; Puziy, Alexander M.

doi:10.1016/s0043-1354(01)00348-7

Cited by 110 publications

(63 citation statements)

References 16 publications

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“…2) indicates considerable variation in the form and intensity of bands within the range of 1750-1000 cm −1 , for AC1 and AC2. Most of the bands in this region is well established and assigned to several O-functionalities (C=O, CO-O, C-OH, C-O-C) [33][34][35][36][37][38][39][40], which confirm their clear abundance. A small sharp peak at 1370 cm −1 is usually ascribed to C=O stretching vibrations of ketones, aldehydes and carboxyls.…”

Section: Characteristics Of the Activated Carbons Under Considerationmentioning

confidence: 82%

Impact of Air Convection on H₃PO₄-Activated Biomass for Sequestration of Cu (II) and Cd (II) Ions

Girgis¹,

El-Kady²,

Attia³

et al. 2009

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Crushed, depitted peach stones were impregnated activated with 50% H followed by pyrolysis at 500 o C. Two activated carbons were produced, one under its own evolved gases during pyrolysis, and the second conducted with air flow throughout the carbonization stage. Physicochemical properties were investigated by several procedures; carbon yield, ash content, elemental chemical analysis, TG/DTG and FTIR spectra. Porosity characteristics were determined by the conventional N 2 adsorption at 77 K, and data analyzed to get the major texture parameters of surface area and pore volume. Highly developed activated carbons were obtained, essentially microporous, with slight effect of air on the porous structure. Oxygen was observed to be markedly incorporated in the carbon matrix during the air treatment process. Cation exchange capacity towards Cu (II) and Cd (II) was tested in batch single ion experimental mode, which proved to be slow and a function of carbon dose, time and initial ion concentration. Copper was up taken more favorably than cadmium, under same conditions, and adsorption of both cations was remarkably enhanced as a consequence of the air treatment procedure. Sequestration of the metal ions was explained on basis of the combined effect of the oxygen functional groups and the phosphorous-containing compounds; both contributing to the total surface acidity character.

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Section: Characteristics Of the Activated Carbons Under Considerationmentioning

confidence: 82%

Impact of Air Convection on H₃PO₄-Activated Biomass for Sequestration of Cu (II) and Cd (II) Ions

Girgis¹,

El-Kady²,

Attia³

et al. 2009

Carbon letters

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“…Preference of a biosorbent for one of the two metals (1 and 2) of a binary system was expressed in terms of separation factor ˛1 2 [27,28]:…”

Section: Sorption Capabilitymentioning

confidence: 99%

Metal biosorption onto dry biomass of Arthrospira (Spirulina) platensis and Chlorella vulgaris: Multi-metal systems

Rodrigues

Ferreira

Carvalho

et al. 2012

Journal of Hazardous Materials

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“…Among these, adsorption is effective and economical (Ahmad et al 2009). Many heavy metal adsorption studies have focused on the application of activated carbons (Kikuchi et al 2006;Malik et al 2002). The discovery of alternative adsorbent to replace the costly activated carbon is highly encouraged.…”

Section: Introductionmentioning

confidence: 99%

Insight into adsorption equilibrium, kinetics and thermodynamics of lead onto alluvial soil

Das

Mondal

Bhaumik

et al. 2013

Int. J. Environ. Sci. Technol.

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In the present study, adsorption of lead (II) ions from aqueous solution by alluvial soil of Bhagirathi River was investigated under batch mode. The influence of solution pH, sorbent dose, initial lead (II) concentration, contact time, stirring rate and temperature on the removal process were investigated. The lead adsorption was favored with maximum adsorption at pH 6.0. Sorption equilibrium time was observed in 60 min. The equilibrium adsorption data were analyzed by the Freundlich, Langmuir, DubininRadushkevich and Temkin adsorption isotherm models. The kinetics of lead (II) ion was discussed by pseudo firstorder, pseudo second-order, intra-particle diffusion, and surface mass transfer models. It was shown that the adsorption of lead ions could be described by the pseudo second-order kinetic model. The activation energy of the adsorption process (E a ) was found to be -38.33 kJ mol -1 using the Arrhenius equation, indicating exothermic nature of lead adsorption onto alluvial soil. Thermodynamic parameters, such as Gibbs free energy (DG 0 ), the enthalpy (DH 0 ), and the entropy change of sorption (DS 0 ) have also been evaluated and it has been found that the adsorption process was spontaneous, feasible, and exothermic in nature. The results indicated that alluvial soil of Bhagirathi River can be used as an effective and low cost adsorbent to remove lead ions from aqueous solutions.

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Characterisation of novel modified active carbons and marine algal biomass for the selective adsorption of lead

Cited by 110 publications

References 16 publications

Impact of Air Convection on H₃PO₄-Activated Biomass for Sequestration of Cu (II) and Cd (II) Ions

Impact of Air Convection on H₃PO₄-Activated Biomass for Sequestration of Cu (II) and Cd (II) Ions

Metal biosorption onto dry biomass of Arthrospira (Spirulina) platensis and Chlorella vulgaris: Multi-metal systems

Insight into adsorption equilibrium, kinetics and thermodynamics of lead onto alluvial soil

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Characterisation of novel modified active carbons and marine algal biomass for the selective adsorption of lead

Cited by 110 publications

References 16 publications

Impact of Air Convection on H3PO4-Activated Biomass for Sequestration of Cu (II) and Cd (II) Ions

Impact of Air Convection on H3PO4-Activated Biomass for Sequestration of Cu (II) and Cd (II) Ions

Metal biosorption onto dry biomass of Arthrospira (Spirulina) platensis and Chlorella vulgaris: Multi-metal systems

Insight into adsorption equilibrium, kinetics and thermodynamics of lead onto alluvial soil

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Product

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Impact of Air Convection on H₃PO₄-Activated Biomass for Sequestration of Cu (II) and Cd (II) Ions

Impact of Air Convection on H₃PO₄-Activated Biomass for Sequestration of Cu (II) and Cd (II) Ions