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Adsorption kinetic
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Toxic metals in water systems pose a global health risk. Thus, multifunctional water monitoring and treatment materials are indispensable. Nickel ions, a frequent heavy metal pollutant, affect ecosystem function. This study investigates the utilization of Al2O3@g-C3N4 (AlCN) nanosorbent for adsorbing Ni (II) ions from aqueous solutions.
9p
visergeyne
18-06-2024
0
0
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According to the batch experiments, the adsorption isotherms and the adsorption kinetics for these mesoporous materials are well fitted with the nonlinear Langmuir model and the nonlinear pseudo-second-order model, respectively. Among them, CuFe2O4 powder showed the best phosphate adsorption performance with the maximum P adsorption capacity of 27.49 mgP g-1 , which can be assigned to the highest surface area and the high pH value at its point of zero charge.
7p
dianmotminh02
03-05-2024
6
1
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The kinetic study was also carried out by studying the adsorption process at different temperatures using these two adsorbents to find the rate of adsorption process, its mechanism and to determine different thermodynamic parameters. For this purpose, different kinetic models were used which include film diffusion, particle diffusion, intraparticle diffusion, Elovich, Lagergren pseudo first order, Lagergren pseudo second order, simple first order and second order equations.
17p
dianmotminh02
03-05-2024
2
1
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Ebook "Heterogeneous catalysis and its industrial applications" aims to introduce the basic concepts involved in industrial catalytic processes. It is profusely illustrated with experimental results with the main objective of guiding how to select a suitable catalyst for specific processes. The book is divided in two parts. In the first part the basic concepts are addressed, regarding the existing theories, activity patterns and adsorption-desorption phenomena.
382p
tudohanhtau1006
29-03-2024
2
1
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The study aims to assess the diesel oil adsorption capacity of activated carbon derived from rambutan peel, a prevalent agricultural by-product in Vietnam. The adsorption process will be investigated using various adsorption isotherms (Langmuir, Freundlich, Temkin, Dubin-Radushkevich), adsorption kinetics (pseudo-first order and pseudo-second order).
18p
viellison
28-03-2024
4
1
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In the present study, for the first time, photodegradation of lindane compared with adsorption technique in water environment using synthesized TiO2-NPs was investigated. Some effective parameters for lindane removal by photocatalyst were systematically optimized. The mechanism of lindane removal using TiO2-NPs is also suggested on the basis of degradation kinetic and the change in surface charge.
5p
viengels
25-08-2023
5
3
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In the present work, we report on the dye removal efficiency of Cobalt chromite, CoCr2O4 nanoparticles synthesized via the solvothermal method. The obtained CoCr2O4 nanoparticles demonstrated that the dye removal efficiency of CoCr2O4 nanoparticles could be enhanced by a reduction of size or improved water dispersibility.
10p
viberbers
09-08-2023
4
3
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The CuO and NiO nanoflakes were synthesized by a hydrothermal reaction. The secondary nucleation and growth of hydroxides resulted in the formation of flake like architectures as the prepared nanoparticles were used as an adsorbent for malachite green oxalate (MGO) and methyl orange (MO).
9p
viberbers
09-08-2023
9
3
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This study concerns the removal of fluoride using aluminium oxide nanoparticles synthesized in the presence of oxidizing agents H2SO4, KMnO4 and K2Cr2O7. The obtained nanoparticles were characterized using TGA, FESEM, EDX and XRD.
10p
viberbers
09-08-2023
10
3
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The ZnO/activated carbon nanocomposites are a potential adsorbent for treating polluted water. The effect of the mass ratio of molten ZnCl2 and rice husks, pyrolysis temperature on the characteristics and methylene blue (MB) adsorption capacity were charaterized. The adsorption isotherm and kinetics of the organic dye MB on the prepared ZnO/activated carbon were also thoroughly investigated.
12p
viberkshire
09-08-2023
8
3
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In this study, chitin prepared from shell of shrimp that was treated with the non-thermal plasma (T-Ch) and used for study of the lead (II) adsorption from aqueous solution. The optimum conditions for the adsorption of lead (II) ions were found to be pH 6.0, and 100 min of contact time.
7p
vidoctorstrange
06-05-2023
4
3
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Waste from Jackfruit has little economic value and often causes serious environmental problems. The conversion of jackfruit waste will help reduce waste treatment costs, provide a potential source of raw materials for the activated carbon (AC) and increase economic value. In this study, the ACs from the Jackfruit shell and pulp were synthesized by microwave assistance for removing organic dyes.
13p
vidoctorstrange
06-05-2023
9
2
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The adsorption of Cu(II) ions from aqueous solution onto alginic acid has been investigated based on the establishment of a relationship among pH, conductivity and the concentration of metal ion. It was shown that the adsorption of this metal ion onto alginic acid followed the pseudo-second-order reaction and was conducted by ion exchange mechanism.
10p
vidoctorstrange
06-05-2023
7
3
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In this study, the removal of DMDS was investigated by adsorption on activated carbon cloth (ACC) in the gas phase. Kinetics and isotherm studies were performed. Adsorption kinetics followed by GC-MS and the data were processed using different models. When correlation coefficients (R2 ) of linear regression analysis are analyzed, it is seen that the concordance of experimental data to the pseudo-second-order equation is quite good.
10p
lyhuyenthu
31-01-2023
8
2
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GO-NH2 (amino functionalized graphene oxide) was synthesized by grafting (3-aminopropyl) triethoxysilane onto the surface GO (graphene oxide). The GO-NH2with a higher surface area and many active sites was characterized and its effectiveness in removing Rhod B dye and Ni(II) ions from wastewater by adsorption was observed. The effects of pH, time, and strange ions on the adsorption efficiency were investigated.
17p
lyhuyenthu
31-01-2023
8
2
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In this study, the performance of chitosan based semi-IPN nanocomposite hydrogels for the adsorptive removal of basic violet 14 (BV14) from aqueous solution has been explored. Batch adsorption studies were conducted to determine the effect of various parameters on BV14 adsorption, and optimum values were reported as pH of 8, the adsorbent dosage of 0.025 g, initial BV14 concentration of 5 mg L–1 and contact time of 90 min at a temperature of 25 °C.
15p
lyhuyenthu
31-01-2023
7
1
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Three kinds of hierarchical Mordenite Framework Inverted (MFI)-type nanozeolites including Si-MFI, Al-MFI and Ti-MFI were successfully synthesized by two-stage varying temperature hydrothermal treatment. Taking toluene as the probe molecule, a series of methods were used to evaluate the adsorption properties of as-synthesized hierarchical zeolites samples including the adsorption breakthrough curves, simulation of adsorption isotherms as well as kinetics models and toluene-TPD (the temperature programmed desorption of toluene).
10p
vironald
15-12-2022
3
3
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Monolithic binder-free CO2 adsorbents with high adsorption capacity, selectivity, adsorption-desorption kinetics, and regenerability are highly desired to both reduce the environmental impact of anthropogenic CO2 emissions and purify valuable gases from CO2.
9p
vironald
15-12-2022
4
2
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Bismuth-based metal-organic frameworks (Bi-MOFs) such as bismuth subgallate are important for applications ranging from medicine to gas separation and catalysis. Due to the porous nature of such Bi-MOFs, it would be valuable to understand their gas sorption and separation properties.
12p
vironald
15-12-2022
7
2
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In the paper "Magnetic chitosan nanoparticles for removal of Cr(VI) from aqueous solution", magnetic chitosan nanoparticles were prepared, characterized and applied for the removal of Cr(VI) in the water solution. Afterwards, thermodynamic and kinetic aspects of the adsorption process were considered. The improved magnetic and high adsorption uptake properties are two main features of the synthesized nanoparticles that can be advantageously used in water treatment.
5p
runordie3
27-06-2022
11
2
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