scholarly journals Thermodynamic studies on the adsorption of Cu2+, Ni2+ and Cd2+ on to amine-modified bentonite

2017 ◽  
Vol 30 (3) ◽  
pp. 357 ◽  
Author(s):  
X. Zhu ◽  
L. Lan ◽  
N. Xiang ◽  
W. Liu ◽  
Q. Zhao ◽  
...  
Keyword(s):  
Thermodynamic Studies ◽  
Modified Bentonite

Kinetic and thermodynamic studies of the adsorption of Pb(II), Cr(III) and Cu(II) onto modified bentonite

2018 ◽  
Vol 131 ◽  
pp. 282-290
Author(s):  
Faiza Zahaf ◽  
Reda Marouf ◽  
Fatima Ouadjenia ◽  
Jacques Schott
Keyword(s):  
Thermodynamic Studies ◽  
Modified Bentonite ◽  
Kinetic And Thermodynamic Studies

scholarly journals Adsorption of Methylene Blue dye and Cu(II) ions on EDTA-modified bentonite: Isotherm, kinetic and thermodynamic studies

2018 ◽  
Vol 28 (5) ◽  
pp. 197-205 ◽  
Author(s):  
Maria Leah Flor A. De Castro ◽  
Melody Love B. Abad ◽  
Divine Angela G. Sumalinog ◽  
Ralf Ruffel M. Abarca ◽  
Peerasak Paoprasert ◽  
...  
Keyword(s):  
Methylene Blue ◽  
Blue Dye ◽  
Methylene Blue Dye ◽  
Thermodynamic Studies ◽  
Modified Bentonite ◽  
Kinetic And Thermodynamic Studies

Using of modified-bentonite as low-cost sorbent for removal of methylene blue dye from aqueous solution

2020 ◽  
Vol 27 (2) ◽  
pp. 45-54
Author(s):  
Saraa Muwafaq Ibrahim ◽  
Ziad T. Abd Ali
Keyword(s):  
Aqueous Solution ◽  
Methylene Blue ◽  
Silanol Group ◽  
Infrared Spectrometry ◽  
Blue Dye ◽  
Ammonium Bromide ◽  
Vibration Band ◽  
Order Kinetic ◽  
Methylene Blue Dye ◽  
Modified Bentonite

Batch experiments have been studied to remove methylene blue dye (MB) from aqueous solution using modified bentonite. The modified bentonite was synthesized by replacing exchangeable calcium cations in natural bentonite with cationic surfactant cetyl trimethyl ammonium bromide (CTAB). The characteristics of modified bentonite were studied using different analysis such as Scanning electronic microscopy (SEM), Fourier transform infrared spectrometry (FTIR) and surface area. Where SEM shows the natural bentonite has a porous structure, a rough and uneven appearance with scattered and different block structure sizes, while the modified bentonite surface morphology was smooth and supplemented by a limited number of holes. On other hand, (FTIR) analysis that proved NH group aliphatic and aromatic group of MB and silanol group are responsible for the sorption of contaminate. The organic matter peaks at 2848 and 2930 cm-1 in the spectra of modified bentonite which are sharper than those of the natural bentonite were assigned to the CH2 scissor vibration band and the symmetrical CH3 stretching absorption band, respectively, also the 2930 cm-1 peak is assigned to CH stretching band. The batch study was provided the maximum removal efficiency (99.99 % MB) with a sorption capacity of 129.87 mg/g at specified conditions (100 mg/L, 25℃, pH 11 and 250rpm). The sorption isotherm data fitted well with the Freundlich isotherm model. The kinetic studies were revealed that the sorption follows a pseudo-second-order kinetic model which indicates chemisorption between sorbent and sorbate molecules.

Aggregation Behavior and Thermodynamic Studies of Hydrotropes: A Review

2020 ◽  
Vol 57 (3) ◽  
pp. 192-202 ◽  
Author(s):  
Akash D. Patel ◽  
Meghal A. Desai
Keyword(s):  
Aggregation Behavior ◽  
Thermodynamic Studies

Thermodynamic Studies of SN38 Hydrolysis in the Presence of Human and Bovine Serum Albumin

2011 ◽  
Vol 1 (2) ◽  
pp. 140-151 ◽  
Author(s):  
Balasubramanian Sivakumar ◽  
Rishi Thakur ◽  
Sasank Kunadharaju ◽  
Michalakis Savva
Keyword(s):  
Bovine Serum Albumin ◽  
Serum Albumin ◽  
Bovine Serum ◽  
Thermodynamic Studies

scholarly journals Effect of Pretreatment on Ammonium Adsorption Properties of Sepiolite: Equilibrium, Kinetics and Thermodynamic Studies

2016 ◽  
Vol 14 (4) ◽  
pp. 260-272 ◽  
Author(s):  
Luong Van Duc ◽  
Yuki Koga ◽  
Qiaoyan Wei ◽  
Takehide Hama ◽  
Yasunori Kawagoshi
Keyword(s):  
Adsorption Properties ◽  
Thermodynamic Studies ◽  
Ammonium Adsorption ◽  
Kinetics And Thermodynamic
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