Activated carbon from <i>Camellia oleifera</i> shells for adsorption of Y(<scp>iii</scp>): experimental and DFT studies

Zeng, Bin; Zeng, Xiangrong; Hu, Lianghui; Huang, Lijinhong; Huang, Yuxiang; Zhou, Yi; Liu, Guoliang; Huang, Wanfu

doi:10.1039/d3ra08487f

Cited by 4 publications

(3 citation statements)

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“…The surface element composition, chemical bonding environment, and adsorption sites of the activated carbon were scrutinized through XPS analysis. The surface morphology and energy spectrum of activated carbon were investigated using SEM (ZEISS Sigma 300 from Oberkochen, Germany) [33]. The concentration of La 3+ was measured, employing the instrument parameters recommended by the manufacturer.…”

Section: Characterizationmentioning

confidence: 99%

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In Situ Modification of Activated Carbon Made from Camellia oleifera Shell with Na2EDTA for Enhanced La3+ Recovery

Huang,

Zeng,

Fan

et al. 2024

Minerals

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It is important to recover La3+ from metallurgical solutions or wastewater. However, the recovery rate of La3+ is usually less than 1% and the recovery methods are not environmentally friendly or user-friendly. Therefore, a straightforward, efficient, clean, and economically friendly method is needed. In this investigation, a modified adsorbent, COSAC-Na2EDTA-15, which was made from the Camellia oleifera shell (COS) and disodium ethylenediaminetetraacetic acid (Na2EDTA), was invented. In addition, characterization of the COSAC-Na2EDTA-15 adsorbent was conducted using SEM and XPS, and the principle of adsorption was revealed. The adsorption kinetics followed P-S-O KM, while the isotherm of COS-activated carbon (COSAC) aligned more closely with the Langmuir model. Compared to COSAC, the maximum La3+ adsorption capacity of COSAC-Na2EDTA-15 increased from 50 to 162.43 mg/g, and the content of O and N changed from 7.31% and 1.48% to 12.64% and 4.15%, respectively. The surface of the COSAC-Na2EDTA-15 exhibited abundant C, N, and O elements, and La3+ was detected on the sample surface after adsorption. The test and analysis results fully indicate that La3+ can be successfully adsorbed on the surface of COSAC-Na2EDTA-15. Because of its easy preparation, low cost, and superior performance, activated carbon made from COS finds extensive applications in the adsorption and recovery of rare earth elements.

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Section: Characterizationmentioning

confidence: 99%

“…Nevertheless, it has not yet been employed for the recovery of rare earth ions. The application of COS-derived activated carbon to remove La 3+ can realize the recycling of agricultural wastes, thus reducing resource waste and environmental pollution at the same time [33].…”

Section: Introductionmentioning

confidence: 99%

In Situ Modification of Activated Carbon Made from Camellia oleifera Shell with Na2EDTA for Enhanced La3+ Recovery

Huang,

Zeng,

Fan

et al. 2024

Minerals

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“…Compared to pristine hydrochar, P-SHC exhibits a stronger adsorption capacity for lanthanum, and the research indicates that the enhancement in adsorption performance is primarily attributed to the coordination effect of the phosphate functional groups [ 32 ]. Zeng et al used oil tea husk as raw material to prepare activated carbon via the phosphoric acid activation method, and their phosphoric acid-activated carbon had a high efficiency of Y(III) recovery capacity [ 33 ].…”

Section: Adsorption Of Rare-earth Elements On Porous Materialsmentioning

confidence: 99%

Overview of Functionalized Porous Materials for Rare-Earth Element Separation and Recovery

Peng,

Zhu,

Zou

et al. 2024

Molecules

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The exceptional photoelectromagnetic characteristics of rare-earth elements contribute significantly to their indispensable position in the high-tech industry. The exponential expansion of the demand for high-purity rare earth and related compounds can be attributed to the swift advancement of contemporary technology. Nevertheless, rare-earth elements are finite and limited resources, and their excessive mining unavoidably results in resource depletion and environmental degradation. Hence, it is crucial to establish a highly effective approach for the extraction and reclamation of rare-earth elements. Adsorption is regarded as a promising technique for the recovery of rare-earth elements owing to its simplicity, environmentally friendly nature, and cost-effectiveness. The efficacy of adsorption is contingent upon the performance characteristics of the adsorbent material. Presently, there is a prevalent utilization of porous adsorbent materials with substantial specific surface areas and plentiful surface functional groups in the realm of selectively separating and recovering rare-earth elements. This paper presents a thorough examination of porous inorganic carbon materials, porous inorganic silicon materials, porous organic polymers, and metal–organic framework materials. The adsorption performance and processes for rare-earth elements are the focal points of discussion about these materials. Furthermore, this work investigates the potential applications of porous materials in the domain of the adsorption of rare-earth elements.

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Cobalt metal replaces Co-ZIF-8 mesoporous material for effective adsorption of arsenic from wastewater

Wang,

et al. 2024

Environ Sci Pollut Res

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Activated carbon from Camellia oleifera shells for adsorption of Y(iii): experimental and DFT studies

Abstract: Research on preparing high-performance activated carbon from COS to adsorb low concentrations of rare earth ions.

Cited by 4 publications

References 46 publications

In Situ Modification of Activated Carbon Made from Camellia oleifera Shell with Na2EDTA for Enhanced La3+ Recovery

In Situ Modification of Activated Carbon Made from Camellia oleifera Shell with Na2EDTA for Enhanced La3+ Recovery

Overview of Functionalized Porous Materials for Rare-Earth Element Separation and Recovery

Cobalt metal replaces Co-ZIF-8 mesoporous material for effective adsorption of arsenic from wastewater

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