Coordination of Polyacrylic Grafted Polytetrafluoroethylene Fiber with Fe (III) Ions in Aqueous Solution

2013 ◽  
Vol 683 ◽  
pp. 339-342
Author(s):  
Bing Li ◽  
Yong Chun Dong
Keyword(s):  
Aqueous Solution ◽  
Acrylic Acid ◽  
Freundlich Isotherm ◽  
The Other ◽  
Ion Concentration ◽  
Order Model ◽  
Coordination Process ◽  
Pseudo Second Order ◽  
Isotherm Equations ◽  
Kinetics Of

The grafted polytetrafluoroethylene (PTFE) fibers were prepared with acrylic acid and then coordinated with Fe (III) ions. The effect of initial Fe (III) ion concentration and temperature on coordination process was investigated. In addition, the kinetics of the coordination process was also evaluated. The results indicated that increasing initial Fe (III) concentration and temperature significantly improve the amount of Fe (III) ions coordinated onto the fiber. The coordination between them can be described by Langmuir and Freundlich isotherm equations. On the other hand, coordinating process also follows a pseudo-second order model. Moreover, a higher initial Fe (III) ion concentration gives rise to an enhanced initial Fe (III) ion coordination rate.

Study on Adsorption of U(VI) From Aqueous Solution by Activated MgO

2017 ◽  
Author(s):  
Qingqing Liu ◽  
Xiaoyan Li
Keyword(s):  
Aqueous Solution ◽  
Adsorption Capacity ◽  
Adsorption Process ◽  
Removal Rate ◽  
Freundlich Isotherm ◽  
Batch System ◽  
15Mg Dose ◽  
Pseudo Second Order ◽  
Ft Ir ◽  
Kinetics Of

The activated MgO was synthesized by microwave homo-precipitator method and characterized by SEM, EDS and FT-IR methods. It was used to adsorption of U(VI) from aqueous solution with batch system. The paper discussed the effect of pH, temperature, contact time, adsorbent dose and initial U(VI) concentration on the adsorption. The results showed that activated MgO has good adsorption capacity for U(VI), the removal rate and equilibrium adsorption capacity reached 83.5% and 84.04mg·g−1 at pH 5.0, 15mg dose and 313K,respectively. The adsorption kinetics of U(VI) onto activated MgO were better fitted with pseudo-second-order kinetic.The adsorption isotherm data were fitted well to Freundlich isotherm model.The thermodynamic parameters showed that the adsorption process is endothermic and spontaneous.

Removal of Pb (II) from Aqueous Solution by Blast-Furnace Slags

2013 ◽  
Vol 726-731 ◽  
pp. 2736-2741
Author(s):  
Ming Da Liu ◽  
Ge Tian ◽  
Liang Jie Zhao ◽  
Yao Sheng Wang ◽  
Lei Guo ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Blast Furnace ◽  
Freundlich Isotherm ◽  
Kinetic Studies ◽  
Sorption Process ◽  
Second Order ◽  
Order Model ◽  
Pseudo Second Order ◽  
Solution Kinetic ◽  
Second Order Model

Five blast-furnace slags were used as adsorbents to remove Pb (II) from aqueous solution. Kinetic studies showed that the sorption process was best described by pseudo-second-order model. Among Langmuir, Freundlich and Temkin isotherms, the Freundlich isotherm had a better fit with the simulation of the adsorption of Pb (II).

scholarly journals Kinetics of Adsorptive Removal of Drimarene Brilliant Red from Aqueous Solution Using Untreated Agricultural Residues

2016 ◽  
Vol 59 (1) ◽  
pp. 11-22
Author(s):  
Ch. Tahir Mehmood ◽  
Muhammad Arshad ◽  
Tayyab Ashfaq ◽  
Muhammad Bilal ◽  
Muhammad Shafiq ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Rice Husk ◽  
Analytical Data ◽  
Particle Sizes ◽  
Order Model ◽  
Orange Peels ◽  
Pseudo Second Order ◽  
Initial Adsorption ◽  
Kinetics Of ◽  
Solution Kinetics

The potential of untreated banana and orange peels, and rice husk was tested for drimarenebrilliant red (DBR) dye removal from aqueous solution. Kinetics was also studied in a batch experiment.Dose of adsorbents varied from 6 to 12 g/L, particle sizes 0.2 and 0.8 mm and contact time 2–32 h. Highdose and small particle size favoured DBR removal efficiency significantly. The highest adsorption capacitywas shown by rice husk (10 mg/g), then orange peels (9 mg/g) and the lowest by banana peels (4 mg/g).Langmuir isotherm (R2=0.99) and pseudo-second order model (R2=0.99) depicted well the equilibriumand best explained the kinetics for rice husk, respectively. Initial adsorption appeared as pore diffusionin all the cases and film diffusion was controlling the rate, later on. Based upon the analytical data, a simplemodel has been presented that fitted best to describe rice husk adsorption kinetics.

scholarly journals Phragmites karkaas a Biosorbent for the Removal of Mercury Metal Ions from Aqueous Solution: Effect of Modification

2015 ◽  
Vol 2015 ◽  
pp. 1-12 ◽  
Author(s):  
Muhammad Hamid Raza ◽  
Aqsa Sadiq ◽  
Umar Farooq ◽  
Makshoof Athar ◽  
Tajamal Hussain ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Metal Ion ◽  
Freundlich Isotherm ◽  
Agitation Speed ◽  
Second Order ◽  
Ion Concentration ◽  
Order Kinetic ◽  
Order Kinetic Model ◽  
Pseudo Second Order ◽  
Phragmites Karka

Batch scale studies for the adsorption potential of novel biosorbentPhragmites karka(Trin), in its natural and treated forms, were performed for removal of mercury ions from aqueous solution. The study was carried out at different parameters to obtain optimum conditions of pH, biosorbent dose, agitation speed, time of contact, temperature, and initial metal ion concentration. To analyze the suitability of the process and maximum amount of metal uptake, Dubinin-Radushkevich (D-R) model, Freundlich isotherm, and Langmuir isotherm were applied. The values ofqmaxfor natural and treated biosorbents were found at 1.79 and 2.27 mg/g, respectively. The optimum values of contact time and agitation speed were found at 50 min and 150 rpm for natural biosorbent whereas 40 min and 100 rpm for treated biosorbent, respectively. The optimum biosorption capacities were observed at pH 4 and temperature 313 K for both naturalP. karkaand treatedP. karka.RLvalues indicate that comparatively treatedP. karkawas more feasible for mercury adsorption compared to naturalP. karka. Both pseudo-first-order and pseudo-second-order kinetic models were applied and it was found that data fit best to the pseudo-second-order kinetic model. Thermodynamic studies indicate that adsorption process was spontaneous, feasible, and endothermic.

scholarly journals Equilibrium and Kinetic Study of Removal Copper(II) from Aqueous Solution Using Chicken Eggshells: Low Cost Sorbent

Molekul ◽  
2021 ◽  
Vol 16 (1) ◽  
pp. 28
Author(s):  
Mohammad Jihad Madiabu ◽  
Joko Untung ◽  
Imas Solihat ◽  
Andi Muhammad Ichzan
Keyword(s):  
Aqueous Solution ◽  
Low Cost ◽  
Freundlich Isotherm ◽  
Sorption Process ◽  
X Ray Diffraction ◽  
Order Model ◽  
X Ray ◽  
Adsorption Condition ◽  
Pseudo Second Order ◽  
Effect Of Copper

The research aims to investigate feasibility eggshells as potential adsorbent to remove copper(II) ions from aqueous solution. Eggshells powder was characterized using X-ray diffraction, scanning electron microscopy, and Fourier transform infrared spectroscopy. Effect of copper(II) initial concentration, adsorbent dosage, and contact time have conducted. The optimum adsorption condition obtained when 0.7 g eggshells applied to 50 mg/L copper(II) solution for 50 minutes. The maximum percentage of copper(II) removal was exceeded more than 85%. Langmuir and Freundlich isotherm model were applied to describe the equilibrium adsorption. Copper(II) kinetics sorption process was fitted to pseudo-second order model with a rate constant equal to 0.516 g/mg.min. The results clearly exhibit that eggshells powder can be effectively used to remove copper(II) ions from aqueous solutions.

Fuchsine Adsorption from Aqueous Solution by Epichlorohydrin Crosslinked Peanut Husk

2012 ◽  
Vol 549 ◽  
pp. 362-365 ◽  
Author(s):  
Ying Hua Song ◽  
Sheng Ming Chen ◽  
Jian Min Ren ◽  
Yuan Gao ◽  
Hui Xu
Keyword(s):  
Aqueous Solution ◽  
Contact Time ◽  
Adsorption Process ◽  
Adsorption Equilibrium ◽  
Freundlich Isotherm ◽  
Order Model ◽  
Isotherm Equation ◽  
Thermodynamic Constants ◽  
Pseudo Second Order ◽  
Uptake Studies

The adsorption of fuchsine by peanut husk, which was crosslinked by epichlorohydrin was studied with variation in the parameters of contact time, pH, initial fuchsine concentration and temperature. They were used for equilibrium adsorption uptake studies with fuchsine. The results indicate that adsorption equilibrium could be well described by both the Langmuir and the Freundlich isotherm equation. The adsorption followed the pseudo-second order model. The thermodynamic constants of the adsorption process were also evaluated, which suggest an endothermic adsorption process which runs spontaneously.

Synthesis, Adsorption Behavior of a Maleamic Acid Cross-Linked β- Cyclodextrin Polymer for Removal of Basic Fuchsin in Aqueous Solution

2014 ◽  
Vol 937 ◽  
pp. 9-16
Author(s):  
Xiao Mei Zhang ◽  
Hong Zhan Li ◽  
Man Li Cao ◽  
Chao Yue Chen
Keyword(s):  
Aqueous Solution ◽  
Adsorption Behavior ◽  
Basic Fuchsin ◽  
Order Model ◽  
Kinetics Of Adsorption ◽  
Langmuir Adsorption ◽  
Adsorption Capacities ◽  
Pseudo Second Order ◽  
Maleamic Acid ◽  
Kinetics Of

A crosslinked β-cyclodextrin (β-CD) polymer (PCD) was synthesized by using maleamic acid as a crosslinked agent, and its adsorption behavior for basic fuchsin in aqueous solution was investigated. The adsorption isotherms could be well fitted by the Langmuir adsorption equation. On the basis of the Langmuir analysis, the maximum adsorption capacities were determined to be 33.56 mg·g-1 at 308K. The kinetics of adsorption followed the pseudo-second-order model.

Adsorption of Congo Red on AB-8 Macroporous Resin

2012 ◽  
Vol 550-553 ◽  
pp. 2138-2141
Author(s):  
Xin Dong Zhai ◽  
Jie Yan Wu
Keyword(s):  
Waste Water ◽  
Aqueous Solution ◽  
Congo Red ◽  
Freundlich Isotherm ◽  
Macroporous Resin ◽  
Order Model ◽  
Initial Concentration ◽  
Equilibrium Data ◽  
Pseudo Second Order ◽  
Agitation Time

Waste water containing Congo red in industrial production has caused many serious environmental problems worldwide. In this paper, AB-8 macroporous resin was used to remove Congo red from an aqueous solution by adsorption technique under varying conditions of pH, adsorbent dosage, agitation time, temperature and initial concentration. The results show the adsorption kinetics is well described by pseudo-second-order model. It was found that the equilibrium data was better represented by the Freundlich isotherm model.

scholarly journals NOVEL COMPOSITE OF PLASTER KILN DUST-Fe3O4 MAGNETIC NANOPARTICLES AS SORBENT TO UPTAKE CADMIUM (II) IONS FROM CONTAMINATED WATER

2021 ◽  
Vol 52 (2) ◽  
pp. 491-501
Author(s):  
H. Y. Alhussainy ◽  
D. M. Zwayen
Keyword(s):  
Low Cost ◽  
Intraparticle Diffusion ◽  
Ion Concentration ◽  
Contaminated Water ◽  
Fe3o4 Magnetic Nanoparticles ◽  
Order Model ◽  
Pseudo Second Order ◽  
Uptake Data ◽  
Kiln Dust ◽  
Kinetics Of

This study was aimed to use composite magnetic plaster kiln dust (MPKD) as a novel low-cost adsorbent reused of by-product plaster kiln dust (PKD) that was considered a source of air pollution. The removal efficiency of cadmium (II) ions was studied as a function of pH (4-7), MPKD mass (0.5- 8 g/L), initial ion concentration (50- 350 mg/L), and shaking time (5- 180 min). The adsorption kinetics of the MPKD was detected as chemical sorption due to the experimental uptake data best fitted with the pseudo-second-order model, also the intraparticle diffusion of ions did not significantly exert effects on the adsorption. The maximum adsorption uptake was 48 mg/g depending on the Langmuir model. Compared with other adsorbents, the MPKD was considered a promising adsorbent in the field of water treatment.

Adsorption of Phthalate Esters (PAEs) from Aqueous Solution onto Activated Carbons from Softstem Bulrush

2010 ◽  
Vol 152-153 ◽  
pp. 791-796
Author(s):  
Hui Jun Xie ◽  
Qiang Ma ◽  
Wei Tan ◽  
Jian Zhang
Keyword(s):  
Aqueous Solution ◽  
Activated Carbons ◽  
Phthalate Esters ◽  
Freundlich Isotherm ◽  
Second Order ◽  
Order Model ◽  
First Order ◽  
Effects Of Ph ◽  
Pseudo Second Order ◽  
Second Order Model

Removal of Phthalate Easters (PAEs) by softstem bulrush carbon (SBC) in aqueous solution was studied. In this work, the effects of pH, adsorbent dosage (0.8-2.8g), and initial DMP concentration (20-100 mg/L) on the adsorption system were investigated. It turned out that the effective pH was 7.0 and the optimum adsorbent dose was 2.0 g/L. Equilibrium experimental data at 283, 293 and 308 K were better represented by Freundlich isotherm than Langmuir isotherm. In addition, adsorption kinetics was determined using pseudo-first-order model, pseudo-second-order model. The results indicated that the adsorption of DMP onto SBC followed pseudo-second-order model.

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