Hazelnut shell activated carbon: a potential adsorbent material for the decontamination of uranium(VI) from aqueous solutions

Zhu, Mijia; Liu, Ruiping; Chai, Hankui; Yao, Jun; Chen, Yunpeng; Yi, Zichuan

doi:10.1007/s10967-016-5011-2

Cited by 20 publications

(7 citation statements)

References 37 publications

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“…Many techniques have been used for Th separation, including precipitation [ 24 – 26 ], solvent extraction [ 27 , 28 ], and adsorption [ 9 , 21 , 29 – 35 ]. Among these processes, adsorption is arguably the simplest, most adaptable, useful, and well–established technique for Th separation [ 36 ]. However, some of the adsorbents used remain costly, meaning that agricultural and forestry by–products could be effectively exploited as inexpensive biosorbents for Th removal [ 17 , 19 , 37 – 40 ].…”

Section: Introductionmentioning

confidence: 99%

Selective biosorption of thorium (IV) from aqueous solutions by ginkgo leaf

Huang

Chen

et al. 2018

PLoS ONE

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Low–cost biosorbents (ginkgo leaf, osmanthus leaf, banyan leaf, magnolia leaf, holly leaf, walnut shell, and grapefruit peel) were evaluated in the simultaneous removal of La3+, Ce3+, Pr3+, Nd3+, Sm3+, Eu3+, Gd3+, Yb3+, Lu3+, UO22+, Th4+, Y3+, Co2+, Zn2+, Ni2+, and Sr2+ from aqueous solutions. In single metal systems, all adsorbents exhibited good to excellent adsorption capacities toward lanthanides and actinides. In a simulated multicomponent mixed solution study, higher selectivity and efficiency were observed for Th4+ over other metal cations, with ginkgo leaves providing the highest adsorptivity (81.2%) among the seven biosorbents. Through optimization studies, the selectivity of Th4+ biosorption on ginkgo leaf was found to be highly pH–dependent, with optimum Th4+ removal observed at pH 4. Th4+ adsorption was found to proceed rapidly with an equilibrium time of 120 min and conform to pseudo–second–order kinetics. The Langmuir isotherm model best described Th4+ biosorption, with a maximum monolayer adsorption capacity of 103.8 mg g–1. Thermodynamic calculations indicated that Th4+ biosorption was spontaneous and endothermic. Furthermore, the physical and chemical properties of the adsorbent were determined by scanning electron microscopy, Brunauer–Emmett–Teller, X-ray powder diffraction, and Fourier transform infrared analysis. The biosorption of Th from a real sample (monazite mineral) was studied and an efficiency of 90.4% was achieved from nitric acid at pH 4 using ginkgo leaves.

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Section: Introductionmentioning

confidence: 99%

Selective biosorption of thorium (IV) from aqueous solutions by ginkgo leaf

Huang

Chen

et al. 2018

PLoS ONE

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“…Another possible use of untreated HS based on its chemical composition, is as an adsorbent. Native (unmodified) hazelnut shells have been used for adsorptive removal of copper ions from water [22], dye removal [23] and chlorophenols [24], while modified hazelnut shells (in form of activated carbon or chemically modified) have been found to be effective for lead [25], cadmium, zinc, copper [26], uranium (VI) [27], arsenic (III) [28], chromium (VI) [29], methylene blue [30], crystal violet [31], and taxol (anticancer drug) [32] removal. After adsorptive removal of pollutants, the same material (now loaded with adsorbate) can be used directly as a fuel, eliminating the often difficult step of regeneration and disposal of the used adsorbent [23].…”

Section: Introductionmentioning

confidence: 99%

Modified Hazelnut Shells as a Novel Adsorbent for the Removal of Nitrate from Wastewater

Stjepanović

Velić

Habuda-Stanić

2022

Water

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The aim of the study was to prepare a novel adsorbent by chemical modification of hazelnut shells and evaluate its potential for the nitrate removal from model solutions and real wastewater. The characterization of the novel adsorbent, i.e., modified hazelnut shell (MHS) was performed. The adsorbent characterization included the analysis of elemental composition and the surface characteristics analysis by scanning electron microscopy (SEM) and Fourier transform infrared spectroscopy (FTIR). The adsorption experiments (batch technique) were performed to investigate the effects of adsorbent concentration, contact time, initial nitrate concentration, and solution pH. The nitrate removal efficiency increased with the increase in MHS concentration and decreased with the initial nitrate concentration. MHS was found to be effective in nitrate removal over a wide pH range (from 2 to 10), and the highest amount of nitrate adsorbed was 25.79 mg g−1 in a model nitrate solution. Depending on the aqueous medium (model solutions or real wastewater samples), it was shown that both Langmuir and Freundlich adsorption isotherm models can be used to interpret the adsorption process. It was found that the kinetics are well described by a pseudo-second order model and the nitrate adsorption process can be controlled by chemisorption. The intraparticle diffusion model has been used to identify an adsorption-controlled process by diffusion mechanisms. Adsorption/desorption experiments in column confirmed that MHS could be successfully used in multiple cycles (at least three), indicating the potential of MHS as an alternative to costly commercial adsorbents for the removal of nitrates from wastewater.

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“…The advantage of using agricultural waste as raw materials for the production activated carbon is due to its low cost and renewable in nature [13]. These include peat [14], wood [15], pine bark [16], banana pith [17], soybean hulls [18], peanut shells [19], hazelnut shell [20], compost [21], rice husk and saw dust [22] are used as a precursor to prepare activated carbon.…”

Section: Introductionmentioning

confidence: 99%

Adsorption of Cu (II) and Cd (II) onto Activated Carbon Prepared from Pumpkin Seed Shell

Kemal¹,

Siraj²,

Michael³

2019

JESPR

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Present study discusses the removal of heavy metal contaminants from an aqueous solution using orthophosphoric acid activated pumpkin seed shells derived activated carbon (PSS-AC). The activation was done by heating the mixture in an electrical furnace at 800 °C for 3 h. Adsorption experiments were carried out as a function of pH, contact time, initial Cu (II) and Cd (II) ion concentrations, adsorbent dosage and temperature of the solution for the metal ion removal. The equilibrium and kinetic studies data were fitted better for the Langmuir isotherm model and pseudo-second order model respectively. Thermodynamic parameter obtained for Cu (II) and Cd (II) ions adsorption suggests the reaction to be non-spontaneous, feasible; and endothermic between temperatures of 25 °C and 45 °C.

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Hazelnut shell activated carbon: a potential adsorbent material for the decontamination of uranium(VI) from aqueous solutions

Cited by 20 publications

References 37 publications

Selective biosorption of thorium (IV) from aqueous solutions by ginkgo leaf

Selective biosorption of thorium (IV) from aqueous solutions by ginkgo leaf

Modified Hazelnut Shells as a Novel Adsorbent for the Removal of Nitrate from Wastewater

Adsorption of Cu (II) and Cd (II) onto Activated Carbon Prepared from Pumpkin Seed Shell

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