Removal of Heavy Metal Ions from One- and Two-Component Solutions via Adsorption on N-Doped Activated Carbon

Kazmierczak-Razna, Justyna; Zioła-Frankowska, Anetta; Nowicki, Piotr; Frankowski, Marcin; Wolski, Robert; Pietrzak, Robert

doi:10.3390/ma14227045

Cited by 18 publications

(9 citation statements)

References 50 publications

(65 reference statements)

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“…It can be the result of different metal species presented in the solution within the acidic range of pH values and their different size. In the solutions of pH lower than 6, the dominant species of copper are Cu 2+ cations [ 29 ], whereas in case of lead the hydrated forms (mainly PbOH + ) also exists besides Pb 2+ ones. Due to the hydration of Pb(II) its diameter increases, which limits their penetration into the adsorbent pores.…”

Section: Resultsmentioning

confidence: 99%

Activated Biocarbons Obtained from Plant Biomass as Adsorbents of Heavy Metal Ions

et al. 2022

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This paper deals with the adsorption of heavy metal ions on the surface of carbonaceous materials obtained via the chemical activation of biomass. Waste plum stones, pine sawdust and horsetail herb were used as the precursors of carbonaceous adsorbents. The effect of the precursor type and preparation procedure on the physicochemical properties of activated biocarbons and their sorption abilities towards Pb(II) and Cu(II) ions have been checked. The obtained micro-mesoporous activated biocarbons were characterized by determination of elemental composition and ash content, the number of surface functional groups and pH of water extracts as well as textural study based on low temperature nitrogen adsorption/desorption and scanning electron microscopy. Additionally, the electrokinetic studies including solid surface charge density and zeta potential determination were performed. Moreover, the adsorption data modelling (equilibrium and kinetics), XPS results analysis and comparison of parameters characterizing electrical double layer formed at the solid-liquid interface enabled the specification of the mechanism of heavy metals binding with the activated biocarbons surface. The maximum adsorption capacity towards copper and lead ions (177.5 and 178.1 mg/g, respectively) was found for plum stone-based activated biocarbon. For all carbonaceous materials, better fit to the experimental data was achieved with a Langmuir isotherm than a Freundlich one. In turn, a better fit of the kinetics data was obtained using the pseudo-second order model.

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Section: Resultsmentioning

confidence: 99%

Activated Biocarbons Obtained from Plant Biomass as Adsorbents of Heavy Metal Ions

et al. 2022

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“…The adsorptive decontamination of Cu(II) and Zn(II) from binary solute systems onto carbonaceous materials obtained by chemical activation and ammoxidation of polish brown coal was investigated. 124 The inuence of agitation time, temperature, solution pH, and initial concentration as well as the existence of competing ions on the uptake ability of activated carbons, were studied. It was revealed that the sorption capacity upsurges with increasing concentration and the agitation time and optimum removal were found at pH of 8.00 and 6.00 for Cu(II) and Zn(II), correspondingly.…”

Section: Activated Carbonmentioning

confidence: 99%

Removal of heavy metals from binary and multicomponent adsorption systems using various adsorbents – a systematic review

2023

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“…Thus, it is essential to develop promising techniques for simultaneous removal of Pb(II) and Cd(II) from wastewater prior to their discharge into the environment. To date, the treatment techniques for heavy metals contaminated wastewater mainly include chemical precipitation, electrolysis, ion exchange, biological treatment and adsorption [1][2][3][4][5]. The efficiency of these processes depends on its nature and the contaminated pollutants.…”

Section: Introductionmentioning

confidence: 99%

High Performance of UiO-66 Metal–Organic Framework Modified with Melamine for Uptaking of Lead and Cadmium from Aqueous Solutions

abdelmoaty

El‐Wakeel

Fathy

et al. 2022

J Inorg Organomet Polym

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In this paper, UiO-66 metal–organic framework (MOF) was prepared by a hydrothermal method and modified consequently with melamine (MUiO-66), as so as enhance the adsorption properties of these materials in liquid-phase adsorption. With respect to this, the adsorption of lead and cadmium divalent ions was performed under varying conditions of pH, metal ion concentration, contact time, adsorbent dose and temperature. Morphology, texture properties, functional groups, crystallinity and thermal properties of both MOFs were examined. UiO-66 composed of sphere-like particles and covered by layers of melamine with enhancing in crystallinity and active sites as well as the total surface area increased from 1080 to 1160 m2/g. The modified UiO-66 with melamine (MUiO-66) showed a notable adsorption capacity of 177.5 and 146.6 mg/g for Pb and Cd(II) ions, respectively. Adsorption of both metals fitted well with the pseudo-second-order kinetic and Langmuir models and controlled by a physisorption mechanism at pH of 5. Also, adsorption process is an endothermic in nature and desorption is achieved well for three cycles by MUiO-66. Therefore, UiO-66 and MUiO-66 obtained in this work have a great promise in adsorption of heavy metals such as Pb and Cd(II) ions from wastewater.

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Removal of Heavy Metal Ions from One- and Two-Component Solutions via Adsorption on N-Doped Activated Carbon

Cited by 18 publications

References 50 publications

Activated Biocarbons Obtained from Plant Biomass as Adsorbents of Heavy Metal Ions

Activated Biocarbons Obtained from Plant Biomass as Adsorbents of Heavy Metal Ions

Removal of heavy metals from binary and multicomponent adsorption systems using various adsorbents – a systematic review

High Performance of UiO-66 Metal–Organic Framework Modified with Melamine for Uptaking of Lead and Cadmium from Aqueous Solutions

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