scholarly journals Adsorption studies of Methylene blue dye from aqueous solution onto phaseolus aureus biomaterials.

2014 ◽  
Vol 30 (3) ◽  
pp. 1263-1269 ◽  
Author(s):  
D Jirekar ◽  
Arif Pathan ◽  
Mazahar Farooqui
2019 ◽  
Vol 4 (1-2) ◽  
pp. 1-6
Author(s):  
M. Mahadeva Swamy ◽  
B.M. Nagabhushana ◽  
Nagaraju Kottam

The present experiment explains the effectiveness of adsorption studies of methylene blue dye from aqueous solutions on activated carbon from Selenicereus grandiflorus (SG) treated with conc. sulfuric acid. The sulphuric acid-treated Selenicereus grandiflorus activated carbon (SGAC) was used as low-cost adsorbent for the removal of methylene blue dye from aqueous solution. It suggests an ideal alternative method to adsorption of dye compared to other expensive treatment options. The adsorption studies have been conducted at different experimental parameters, i.e., pH, contact time, adsorbent dose and initial dye concentration. The batch mode experiments were conducted by different adsorbent dose (0.03-0.150 g per 50 mL), pH of the solution (2-12), effect of time (3-18 min), initial dye concentration (10 mg/L), point of zero charge and regeneration of spent adsorbent studies. Langmuir model shows better fit to the equilibrium data (R2 = 0.966) than Freundlich model. The adsorption capacity (Qm) of SGAC increases with increasing dosage where Qm is 16.17 mg g-1.


Author(s):  
Saraa Muwafaq Ibrahim ◽  
Ziad T. Abd Ali

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.


2018 ◽  
Vol 8 (3) ◽  
pp. 502-513
Author(s):  
Saravanan Narayanan ◽  
Rathika Govindasamy

2021 ◽  
pp. 50655
Author(s):  
Aafia Tehrim ◽  
Min Dai ◽  
Xiange Wu ◽  
Malik Muhammad Umair ◽  
Imran Ali ◽  
...  

Author(s):  
Mohd Azmier Ahmad ◽  
Muhammad Aswar Eusoff ◽  
Kayode Adesina Adegoke ◽  
Olugbenga Solomon Bello

2017 ◽  
Vol 4 (2) ◽  
pp. 424-433 ◽  
Author(s):  
M. Vinuth ◽  
H.S. Bhojya Naik ◽  
B.M. Vinoda ◽  
H. Gururaj ◽  
N. Thomas ◽  
...  

2021 ◽  
Vol 212 ◽  
pp. 311-322
Author(s):  
Md. Tamez Uddin ◽  
Muhammad Zobayer Bin Mukhlish ◽  
Md. Rifat Hossain Patwary

Author(s):  
Zoubaida Landolsi ◽  
Ibtissem Ben Asseker ◽  
Abdullah Yahya Abdullah Al Zahrani ◽  
Daniela Nunes ◽  
Elvira Fortunato ◽  
...  

2017 ◽  
Vol 03 (01) ◽  
Author(s):  
Seghier Abdelkarim ◽  
Hadjel Mohammed ◽  
Benderdouche Nouredine

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