Influence of aluminium impregnation on activated carbon for enhanced desulfurization of DBT at ambient temperature: Role of surface acidity and textural properties

Ganiyu, Saheed A.; Alhooshani, Khalid; Sulaiman, Kazeem O.; Qamaruddin, Muhammad; Bakare, Idris A.; Tanimu, Abdulkadir; Saleh, Tawfik A.

doi:10.1016/j.cej.2016.06.005

Cited by 81 publications

(45 citation statements)

References 51 publications

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“…To overcome this limitation, synergistic effects of incorporating other adsorbent materials with AC have been studied. For example, Ganiyu et al [32] employed aluminum-impregnated activated carbon, Shah et al [33] utilized tin-impregnated AC, Thaligari et al [34] employed zincimpregnated AC, and Olajire et al [35] utilized Ag nanoparticles-modified AC as adsorbent for removal of sulfur compounds from transportation fuels.…”

Section: Introductionmentioning

confidence: 99%

Desulfurization of Model Oil through Adsorption over Activated Charcoal and Bentonite Clay Composites

et al. 2020

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Adsorption of dibenzothiophene (DBT) from model oil was investigated using composites of pure activated charcoal and pure bentonite clay. DBT adsorption was carried out in batch mode experiments at laboratory scale, where the developed composite materials showed a synergistic effect in removal of DBT from the model oil in terms of improved surface acidity of the pure activated charcoal and mesoporous structure of the pure bentonite clay. Thermodynamics, kinetics, and optimization of various adsorption parameters were investigated. Kinetic analyses proved that DBT adsorption followed pseudo‐second‐order kinetics. To study the thermodynamics of the adsorption, different isotherm adsorption models were applied. The Langmuir isotherm best fitted to the adsorption data. Various thermodynamic parameters were evaluated, including Gibbs free energy, entropy, and enthalpy.

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Section: Introductionmentioning

confidence: 99%

Desulfurization of Model Oil through Adsorption over Activated Charcoal and Bentonite Clay Composites

et al. 2020

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“…The result indicates the presence of two peaks at 2 of 25.43 and 43.89º. The peaks pattern indicates the presence of an amorphous carbon caused by disordered stacked of carbon ring [12].…”

Section: Analysis Of 2-chlorophenolmentioning

confidence: 95%

“…The isotherms produced by AC showed in Figure 3 was corresponding to type IV adsorption characteristics [4,12]. Table 1 summarizes the properties of AC produced from waste tyre.…”

Section: Characterization Of Acmentioning

confidence: 99%

Evaluation of Low Cost-Activated Carbon Produced from Waste Tyres Pyrolysis for Removal of 2-Chlorophenol

Kanchana

Sukumaran

Abdullah

et al. 2019

Bull. Chem. React. Eng. Catal.

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A low cost Activated Carbon (AC) was prepared by using waste tyres as raw material for the removal of 2-chlorophenol (2-CP). The AC adsorbent was prepared and activated by pyrolysis process at 900 ºC under constant nitrogen flow. The physical properties of the AC produced was characterized using X-ray Diffraction (XRD), Brunauer-Emmett-Teller (BET), Field Emission Scanning Electron Microscopy (FESEM), and Fourier Transform Infra Red (FTIR). The influence of initial adsorbate concentration, pH and adsorbent dosage on the removal of 2-CP in the batch-operational mode at ambient temperature were also investigated. The results obtained showed the AC presence of an amorphous carbon with high BET surface area and a total pore volume of 208 m 2 .g -1 and 0.5817 cm 3 , respectively. The highest adsorption capacity of 2-CP by the AC absorbent was achieved at an initial concentration of 10 mg.L -1 , pH 5, and adsorbent dosage of 0.5 g in the first 10 min of contact time. This finding proves that the low cost-AC produced from waste tyres can be utilized for an effective removal of chemical plant wastewater containing toxic chlorine substances.

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“…Regeneration potential of nickel-modified nitrogen-doped carbon was examined by combined solvent and thermal regeneration approaches as previously reported. [23] As illustrated in Figure 15, the adsorption capacity of Ni-CN with fresh adsorbent was compared to other regenerated sorbents up to 3-cycles, for model fuel containing DBT of initial concentration 500 ppmw-S. After initial re-use and regeneration (1st-cycle), there is a decrease of about 8 % in the adsorption capacity of Ni-CN sorbent, and subsequently, the sulfur removal efficiency after second and third cycles was dropped by 9 % and 12 %, respectively. The loss in activity of the adsorbent may be attributed to the partial loss in the adsorbent's characteristics resulted from regeneration treatment.…”

Section: Regeneration Of Ninps-cn Adsorbentmentioning

confidence: 99%

“…[21,22] Furthermore, the efficiency of ordinary carbons needs to be improved for practical purposes and for growing demands of sulfur below 10 ppm-S. For example, deep desulfurization of transportation fuels has been achieved by highly porous carbon modified with metals or metal-oxide. [23,24] The adsorption capacity of carbon adsorbents is further improved by modification with metal(s) through pi-complexation between the metal and sulfur, in addition to electrostatic interactions with pores of the carbon. [25,26] Nitrogen-doped carbon modified with nanoparticles will provide a good adsorbent with better adsorption efficiency, compared to carbon or metal-modified carbon due to improved textural and structural properties besides the surface chemistry.…”

Section: Introductionmentioning

confidence: 99%

Hierarchical Porous Nitrogen‐Doped Carbon Modified with Nickel Nanoparticles for Selective Ultradeep Desulfurization

et al. 2020

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We report herewith, a biomass derived carbon from groundnut shell (GN‐AC) treated with melamine to achieve nitrogen‐doped carbon (CN), followed by modification with nickel‐precursor by solid‐state impregnation to achieve reticulated nickel nanoparticles‐modified nitrogen‐doped carbon (Ni‐CN) adsorbent. Incorporation of heteroatoms and the subsequent loading of nickel nanoparticles on the porous carbon exhibits fast and remarkable adsorption capacity for dibenzothiophene. The sulfur removal efficiencies of CN and Ni‐CN are 40.49 and 44.77 mg‐S/g‐adsorbent, respectively, compared to 29.63 mg‐S/g achieved for bare carbon in 500 ppmw‐S. This excellent performance is attributed to synergy effect of nitrogen heteroatoms and nickel nanoparticles with improved surface chemistry and textural properties. The physical‐chemical properties of the adsorbents were characterized by Boehm titration, N2‐physisorption, FTIR, XRD, XPS, Raman, SEM and TEM. The kinetics and isotherms investigation of the adsorbents data fitted pseudo‐first order and Langmuir models, respectively. The Ni‐CN adsorbent also displays an excellent selectivity and regeneration potential for commercial viability.

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Influence of aluminium impregnation on activated carbon for enhanced desulfurization of DBT at ambient temperature: Role of surface acidity and textural properties

Cited by 81 publications

References 51 publications

Desulfurization of Model Oil through Adsorption over Activated Charcoal and Bentonite Clay Composites

Desulfurization of Model Oil through Adsorption over Activated Charcoal and Bentonite Clay Composites

Evaluation of Low Cost-Activated Carbon Produced from Waste Tyres Pyrolysis for Removal of 2-Chlorophenol

Hierarchical Porous Nitrogen‐Doped Carbon Modified with Nickel Nanoparticles for Selective Ultradeep Desulfurization

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