Adsorption Kinetics of Direct Red 4BS Using Stove Ash

2013 ◽  
Vol 726-731 ◽  
pp. 2833-2836
Author(s):  
Bo Yu ◽  
Wei Ming Wang ◽  
Di Ma ◽  
Zai Sheng Cai
Keyword(s):  
Kinetic Equation ◽  
Kinetic Parameters ◽  
Adsorption Kinetics ◽  
Waste Material ◽  
Order Kinetic ◽  
Initial Concentration ◽  
Adsorption Reaction ◽  
Pseudo Second Order ◽  
Kinetics Of ◽  
Order Kinetic Equation

A waste material, stove ash, was applied to adsorbthe Direct Red 4BS. The dye amount absorbed by ash was improved with increasingthe dye initial concentration from 3g/Lto 7g/L. Dye was adsorbed within 2minutes and the equilibrium was achieved after 5 minutes. The kinetic of adsorptionreaction was also studied. The results showed that adsorption reaction was congruentwith Lagergren pseudo-second order kinetic equation, and different initial dyeconcentrations had their specific kinetic parameters.

Adsorption Kinetics of Phosphate on Ceria-Based Adsorbent

2013 ◽  
Vol 726-731 ◽  
pp. 1668-1672
Author(s):  
Bin Li ◽  
Hong Bin Wang ◽  
Yan Yuan
Keyword(s):  
Kinetic Equation ◽  
Influencing Factors ◽  
Adsorption Kinetics ◽  
Adsorption Process ◽  
Close Relation ◽  
Phosphate Adsorption ◽  
Order Kinetic ◽  
Adsorbent Surface ◽  
Kinetics Of ◽  
Order Kinetic Equation

The adsorption kinetics and influencing factors deduction showed that adsorption process accorded with a second-order kinetic equation according to academic hypothesis. The result was validated by the phosphate adsorption onto Veria-Based adsorbent. The factor (m/V)bhad the close relation with the adsorption speed and the adsorbent dosage, intensity exponent b=0.44 (0b1) in this test condition. All the results show that phosphate adsorption on the adsorbent surface was mono-layer chemisorptions and that the hypothesis of kinetic inference was reasonable.

Fabrication and Methyl Blue Adsorption Kinetics of α-Fe2O3 Nanotubes by Electrospinning

2013 ◽  
Vol 699 ◽  
pp. 302-307
Author(s):  
Qiu Ju Wang ◽  
Rui Jiang Liu ◽  
Xiang Qian Shen ◽  
Ding Mei Wu ◽  
He Hao Li
Keyword(s):  
Adsorption Kinetics ◽  
Average Diameter ◽  
Methyl Blue ◽  
Order Kinetic ◽  
Calcination Process ◽  
Hematite Phase ◽  
Order Kinetic Model ◽  
Pseudo Second Order ◽  
Xrd Patterns ◽  
Kinetics Of

The α-Fe2O3nanotubes were prepared by the eletrospinning and calcination process. The as-prepared α-Fe2O3nanotubes were characterized by XRD, SEM and BET. The XRD patterns show that the nanotubes with a pure hematite phase (α-Fe2O3) are obtained after calcination at 550 oC. The SEM morphologies and BET measurement demonstrate the nanotubes have an average diameter of 200-300 nm and a specific surface area of 15.1 m2/g. Their adsorption of methyl blue was studied with ultraviolet spectrophotometer (UV) to measure the concentration of methyl blue in aqueous solution, and the adsorption kinetics is basically in agreement with the pseudo-second-order kinetic model in the methyl blue concentration range of 100-300 mg/L.

scholarly journals Kinetics of adsorption of methylene blue onto activated kolanut pod

2021 ◽  
Vol 12 (2) ◽  
pp. 156-162
Author(s):  
A.S. Muhammad ◽  
M.A. Abdurrahman
Keyword(s):  
Contact Time ◽  
Adsorption Process ◽  
Batch Adsorption ◽  
Order Kinetic ◽  
Kinetics Of Adsorption ◽  
Initial Concentration ◽  
Order Kinetic Model ◽  
Pseudo Second Order ◽  
Kinetics Of ◽  
Calculated Amount

A batch adsorption process was carried out by optimizing, the effect of contact time (10min to 180min) and initial concentration (5mg/l to150mg/l). The adsorbent was characterized using FTIR spectra and SEM, and the result obtained showed shifting and disappearance of peaks after adsorption. The results of the adsorption kinetics, which includes the correlation coefficient 0.9771 and the agreement between the amount adsorbed experimentally (1.472mg/g) and the calculated amount absorbed(1.196mg/g) revealed that MB was adsorbed satisfactory according to the pseudo second-order kinetic model.

Sorption interactions in system «hydroxyapatite—aqueous solution of CuSO4»

2021 ◽  
pp. 13-20
Author(s):  
T.V. Smotrina ◽  
◽  
O.V. Stoyanov ◽  
Keyword(s):  
Aqueous Solution ◽  
Kinetic Equation ◽  
Chemical Interaction ◽  
Nmr Relaxation ◽  
Diffusion Region ◽  
Order Kinetic ◽  
Pseudo Second Order ◽  
Synthetic Hydroxyapatite ◽  
Process Speed ◽  
Order Kinetic Equation

Regularities of adsorption of copper (II) ions by synthetic hydroxyapatite have been examined. It is shown that sorption of metal ions occurs mainly in the mixed diffusion region, the chemical interaction described by the pseudo-second order kinetic equation has a significant effect on the process speed. It was found out that that the adsorption isotherm was described by the Langmuir monomolecular adsorption equation in the best way. Interaction specificity of hydroxyapatite with water was studied by NMR relaxation spectroscopy method

The Study on Formaldehyde Emission of Composite Floor and Activated Carbon Adsorption on Formaldehyde

2011 ◽  
Vol 243-249 ◽  
pp. 4956-4959
Author(s):  
Jian Chao Hao ◽  
Hui Fen Liu ◽  
Dong Ling Wei ◽  
Li Jun Shi ◽  
Jun Li Li ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Kinetic Equation ◽  
Formaldehyde Emission ◽  
Order Kinetic ◽  
Activated Carbon Adsorption ◽  
High Quality ◽  
Carbon Adsorption ◽  
Airtight Chamber ◽  
The Relationship ◽  
Order Kinetic Equation

The relationship between formaldehyde emission and time was researched and a mathematical model was developed which describes the variation of formaldehyde with time in the airtight chamber. It was found that high quality composite floor was in line with 0-order kinetic equation and low quality composite floor was in line with 1-order kinetic equation. Besides, the effect of activated carbon adsorption on formaldehyde was studied and the result showed that activated carbon had poor adsorption on formaldehyde for weak van der waals force.

Study on the Formaldehyde Adsorption Kinetics of Dry Waters

2014 ◽  
Vol 809-810 ◽  
pp. 907-911
Author(s):  
Jun Long Wang ◽  
Jie Hou ◽  
Ting Jiang ◽  
Yong Jun He ◽  
Yao Dong Liang
Keyword(s):  
Adsorption Kinetics ◽  
High Speed ◽  
Adsorption Process ◽  
Average Diameter ◽  
Adsorption Rate ◽  
Absorption Kinetics ◽  
Order Model ◽  
Pseudo Second Order ◽  
Kinetics Of ◽  
Formaldehyde Adsorption

Dry waters with an average diameter of 82 μm were prepared by a high speed mixed route. The formaldehyde absorption kinetics of dry waters was investigated by simulating indoor formaldehyde pollution in glass chamber. The results showed that pseudo-second order model could be used to simulate the adsorption process; the adsorption rate was highest in the initial 60 minutes; when the adsorption lasted for 180 minutes, the adsorption reached equilibrium.

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