Adsorptive Behavior Of L-Arginine-Silica Micro-Particles Against Arsenic And Fluoride In Aqueous Solution

2022 ◽  
pp. 100636
Author(s):  
Anushree srivastava ◽  
hemen dave ◽  
bablu prasad ◽  
abhishek kumar ◽  
deepak m. Maurya ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Micro Particles ◽  
Adsorptive Behavior

Removal of lead and cadmium ions from aqueous solution by adsorption onto micro-particles of dry plants

2008 ◽  
Vol 61 (1) ◽  
pp. 10-16 ◽  
Author(s):  
H. Benhima ◽  
M. Chiban ◽  
F. Sinan ◽  
P. Seta ◽  
M. Persin
Keyword(s):  
Aqueous Solution ◽  
Cadmium Ions ◽  
Lead And Cadmium ◽  
Micro Particles

Élimination des ions Cu(II) d'une solution aqueuse par les micro-particules de la plante Carpobrotus edulis en système dynamiqueRemoval of Cu(II) ions from aqueous solution by micro-particles of dried Carpobrotus edulis plant in a column system

2011 ◽  
Vol 46 (3) ◽  
pp. 259-267 ◽  
Author(s):  
Mohamed Chiban ◽  
Fouad Sinan
Keyword(s):  
Aqueous Solution ◽  
Contact Time ◽  
Adsorption Process ◽  
Copper Ions ◽  
Isotherm Models ◽  
Carpobrotus Edulis ◽  
Micro Particles ◽  
Column System ◽  
Adsorption Mode ◽  
Column Adsorption

This study reports on the removal of Cu(II) ions from an aqueous solution by adsorption onto dried Carpobrotus edulis plant in a column system. The effect of various process parameters, namely m/V ratio, contact time, initial Cu(II) concentration and pH was studied. The experimental data were analyzed using Freundlich and Langmuir isotherm models to determine the mechanistic parameters related to the adsorption process. The results showed that the adsorption of Cu(II) ions by dried C. edulis increases with the increase of contact time, adsorbent dose, pH and initial Cu(II) concentration in the solution. The maximum adsorption of Cu(II) is reached after one hour of contact time at initial copper concentrations ranging between 10 and 100 mg/L. The m/V ratio of 25 g/L was optimal to obtain a maximum adsorption of copper ions. The maximum adsorption percentage of C. edulis is equal to 94.4%. These results showed that the dried C. edulis plant could be considered as a potential adsorbent material for the removal of Cu(II) from wastewater, using a column adsorption mode.

scholarly journals Preparation and characterization of activated carbon from wheat straw to remove2, 4-dichlorophenoxy acetic acid from aqueous solutions

2021 ◽  
pp. 175-186
Author(s):  
Molla Tefera ◽  
Mengistu Tulu
Keyword(s):  
Aqueous Solution ◽  
Acetic Acid ◽  
Activated Carbon ◽  
Wheat Straw ◽  
Freundlich Isotherm ◽  
Cost Effective ◽  
Volatile Matter ◽  
Adsorption Sites ◽  
Adsorptive Behavior ◽  
Dichlorophenoxy Acetic Acid

This study was focused to investigate the adsorptive behavior of activated carbon prepared from wheat straw treated with acid and base for the removal of 2, 4-dichlorophenoxy acetic acid (2,4-D). The morphology of the adsorbent was characterized using infrared spectroscopy and scanning electron microscopy. Compared with acid activated wheat straw, base activated wheat straw has provided lower ash content, moisture and volatile matter. However, it has higher iodine number than acid activated wheat straw. The removal of 2,4-D from aqueous solution was investigated at various physicochemical parameters such as pH (2–10), contact time (5–60 min), temperature (20-80 oC), amount of adsorbent (0.1-1.4 g) and initial concentration of 2,4-D (1.0-25 mg/L). The removal efficiency of 2,4-D in aqueous solution was found to be 92.02%. The equilibrium data were analyzed using Langmuir and Freundlich isotherm and the Langmuir model better describes that the active adsorption sites were homogeneously distributed on the surface of the adsorbent. Therefore, the activated carbon prepared from wheat straw treated with base can be used as efficient and cost-effective method to remove 2,4-D from aqueous solution.

scholarly journals Adsorption of some Metal Ions from Aqueous Solution on Iraqi Rice Bran and Its Relation to the Physical Properties of these Metal Ions

2014 ◽  
Vol 11 (4) ◽  
pp. 1604-1611
Author(s):  
Baghdad Science Journal
Keyword(s):  
Aqueous Solution ◽  
Adsorption Isotherm ◽  
Metal Ions ◽  
Rice Bran ◽  
Ionic Radius ◽  
Divalent Cations ◽  
Atomic Absorption Spectrophotometry ◽  
Waste Materials ◽  
Absorption Spectrophotometry ◽  
Adsorptive Behavior

Adsorption studies were carried out to test the ability of the Iraqi rice bran (Amber type) to adsorb some metals divalent cations (Cd2+, Co2+, Cu2+, Fe2+, Ni2+, Pb2+, and Zn2+) as an alternative tool to remove these pollutants from water. The Concentrations of these ions in water were measured using flame and flamless atomic absorption spectrophotometry techniques. The applicability of the adsorption isotherm on Langmuir or Freundlisch equation were tested and found to be dependent on the type of ions. The results showed different adsorptive behavior and different capacities of the adsorption of the ions on the surface of the bran. The correlation between the amounts adsorbed and different cation parameters including (electronegativity, ionic radius, and the second ionization potential) were tested. This study showed the applicability of bran, as a cheap and available waste materials, to remove different cations from solution.

scholarly journals Adsorption Analyses of Phenol from Aqueous Solutions Using Magadiite Modified with Organo-Functional Groups: Kinetic and Equilibrium Studies

Materials ◽  
2018 ◽  
Vol 12 (1) ◽  
pp. 96 ◽  
Author(s):  
Mingliang Ge ◽  
Xubin Wang ◽  
Mingyi Du ◽  
Guodong Liang ◽  
Guoqing Hu ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Fourier Transforms ◽  
Condensation Reaction ◽  
Freundlich Isotherm ◽  
Isotherm Model ◽  
Order Kinetic ◽  
Adsorption Model ◽  
Exchange Method ◽  
Equilibrium Studies ◽  
Adsorptive Behavior

Organically-modified magadiite (MAG–CTAB–KH550) was synthesized via ion-exchange method and condensation reaction in the presence of pure magadiite (MAG), cetyltrimethylammonium bromide (CTAB) and γ-aminopropyltriethoxysilane (KH550) in aqueous solution in this research. This new adsorbent material was studied using scanning electron microscope (SEM), X-ray diffraction (XRD), Fourier transforms infrared spectroscopy (FTIR), and N2 adsorption/desorption isotherms process. It was found that the MAG–CTAB–KH550 has high Brunaur-Emmet-Teller (BET) specific surface area and mesoporous pore size distribution which enhanced its ability to remove phenol in aqueous solution; and, the value of pH has a relatively large impact on the adsorption behavior of the sorbent. Finally, the adsorptive behavior of the mesoporous material on phenol was followed pseudo-second-order kinetic adsorption model. In contrast, the adsorption equilibrium isotherm was better performed Langmuir isotherm model than the Freundlich isotherm model; in addition, the results also showed that the MAG–CTAB–KH550 had a better adsorption capacity and removal efficiency than MAG.

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