Preparation and characterization of powdered and granular activated carbon from Palmae biomass for cadmium removal

Egirani, Davidson; Poyi, Nanfe. R.; Shehata, Nabila

doi:10.1007/s13762-020-02652-w

Cited by 27 publications

(5 citation statements)

References 37 publications

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“…Various mineral and organic materials have been tested for Cd(II) and Cu(II) removal from synthetic/real wastewaters. They include powdered marble wastes [15], clays [16], lignocellulosic biomasses [17], biochars [18,19], activated carbons [20,21] etc.…”

Section: Introductionmentioning

confidence: 99%

Use of Lignite as a Low-Cost Material for Cadmium and Copper Removal from Aqueous Solutions: Assessment of Adsorption Characteristics and Exploration of Involved Mechanisms

Jellali

Azzaz

Jeguirim

et al. 2021

Water

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Lignite, as an available and low-cost material, was tested for cadmium (Cd) and copper (Cu) removal from aqueous solutions under various static experimental conditions. Experimental results showed that the removal efficiency of both metals was improved by increasing their initial concentrations, adsorbent dosage and aqueous pH values. The adsorption kinetic was very rapid for Cd since about 78% of the totally adsorbed amounts were removed after a contact time of only 1 min. For Cd and Cu, the kinetic and isothermal data were well fitted with pseudo-second order and Freundlich models, respectively, which suggests that Cd/Cu removal by lignite occurs heterogeneously on multilayers surfaces. The maximum Langmuir’s adsorption capacities of Cd and Cu were assessed to 38.0 and 21.4 mg g−1 and are relatively important compared to some other lignites and raw natural materials. Results of proximate, scanning electron microscopy/energy dispersive X-ray spectroscopy (SEM/EDS), Fourier transform infrared spectroscopy (FTIR) and X-Ray diffraction (XRD) showed that the removal of these metals occurs most likely through a combination of cation exchange and complexation with specific functional groups. The relatively high adsorption capacity of the used lignite promotes its future use as a low cost material for Cd and Cu removal from effluents, and possibly for other heavy metals or groups of pollutants.

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Section: Introductionmentioning

confidence: 99%

Use of Lignite as a Low-Cost Material for Cadmium and Copper Removal from Aqueous Solutions: Assessment of Adsorption Characteristics and Exploration of Involved Mechanisms

Jellali

Azzaz

Jeguirim

et al. 2021

Water

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“…This indicates the existence of more than one kinetic stage and that the intraparticle diffusion is not the only rate-limiting step in Cd (II) adsorption process. The presence of two straight lines in figure 4(C) indicates that the overall rate of Cd (II) adsorption process can be described by two distinct steps; mass transfer and intraparticle diffusion processes [36].…”

Section: ( -) -( ) ( ) /mentioning

confidence: 99%

Biosynthesis of α-MoO₃ nanoparticles and its adsorption performance of cadmium from aqueous solutions

Hasan

Tawfik

Assaf

2021

Adv. Nat. Sci: Nanosci. Nanotechnol.

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Molybdenum (VI) oxide nanoparticles (α-MoO3 NPs) were green synthesised using buckthorn leaf extract as the reducing and capping agents. The α-MoO3 NPs were characterised by thermogravimetric analysis, fourier transforms infrared spectroscopy, X-ray diffraction, field emission scanning, and transmission electron microscopy, energy-dispersive x-ray spectroscopy, and Brunauer–Emmett–Teller surface area analysis. The analyses showed the formation of spherical-shaped α-MoO3 NPs with ∼50 nm mean crystallite size, 3.825 m2 g-1 surface area, and 0.005 cm3 g-1 total pore volume. The synthesised α-MoO3 was then applied for adsorption of Cd (II) from aqueous solutions. Optimisation of various adsorption parameters resulted in complete Cd (II) removal under the conditions: 0.1 g α-MoO3 dose, 60 min contact time, 50 mg l-1 initial Cd (II) concentration, pH 7 and 298 K. The experimental results were further assessed using different kinetic, isotherm and thermodynamic models. The data were best described by pseudo-second-order (R2 = 0.992) and Langmuir (R2 = 0.98) models with a maximum adsorption capacity of 57.5 mg g-1 at optimum conditions. Thermodynamic results indicated that the adsorption process is feasible, spontaneous, and endothermic in nature. Moreover, upon regeneration and interference results, α-MoO3 is stable and selective for Cd (II) adsorption in presence of other cations. Upon these results, the biosynthesised α-MoO3 NPs can be used as a selective adsorbent for the efficient removal of Cd (II) from aqueous media.

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“…It has been estimated that the AC has a surface area of 1000 to 1500 m 2 /g [112]. Generally, activated carbon has two types; granular activated carbon (GAC) and powdered activated carbon (PAC), which powdered AC is more effective than granular AC for reducing/removing contaminants [113,114]. Activated carbon may be generated from any raw material with a high content of carbon, but commonly wood, coal, and lignite have been used more among others.…”

Section: Conventional Activated Carbonmentioning

confidence: 99%

Dye removal from water and wastewater by nanosized metal oxides - modified activated carbon: a review on recent researches

Nayeri

Mousavi

2020

J Environ Health Sci Engineer

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The conventional water and wastewater treatment methods are unable to provide up-to-data organized standards for drinking water and discharging effluents into natural ecosystems. Therefore, developing advanced and cost-effective methods to achieve published standards for water and wastewater and population needs are nowadays necessity. The important parts of this article are providing literature information about dyes and their effects on the environment and human health, adsorption properties and mechanism, adsorbent characteristics, and recent information on various aspects of modified activated carbons with nanosized metal oxides (AC-NMOs) in the removal of dyes. This review also summarized the effect of main environmental and operational parameters such as adsorbent dosage, pH, initial dye concentration, contact time, and temperature on the dye adsorption using AC-NMOs. Furthermore, the applied isotherm and kinetic models have been discussed.

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Preparation and characterization of powdered and granular activated carbon from Palmae biomass for cadmium removal

Cited by 27 publications

References 37 publications

Use of Lignite as a Low-Cost Material for Cadmium and Copper Removal from Aqueous Solutions: Assessment of Adsorption Characteristics and Exploration of Involved Mechanisms

Use of Lignite as a Low-Cost Material for Cadmium and Copper Removal from Aqueous Solutions: Assessment of Adsorption Characteristics and Exploration of Involved Mechanisms

Biosynthesis of α-MoO₃ nanoparticles and its adsorption performance of cadmium from aqueous solutions

Dye removal from water and wastewater by nanosized metal oxides - modified activated carbon: a review on recent researches

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Preparation and characterization of powdered and granular activated carbon from Palmae biomass for cadmium removal

Cited by 27 publications

References 37 publications

Use of Lignite as a Low-Cost Material for Cadmium and Copper Removal from Aqueous Solutions: Assessment of Adsorption Characteristics and Exploration of Involved Mechanisms

Use of Lignite as a Low-Cost Material for Cadmium and Copper Removal from Aqueous Solutions: Assessment of Adsorption Characteristics and Exploration of Involved Mechanisms

Biosynthesis of α-MoO3 nanoparticles and its adsorption performance of cadmium from aqueous solutions

Dye removal from water and wastewater by nanosized metal oxides - modified activated carbon: a review on recent researches

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Biosynthesis of α-MoO₃ nanoparticles and its adsorption performance of cadmium from aqueous solutions