Study of equilibrium, kinetic and thermodynamic parameters about methylene blue adsorption onto natural zeolite

2009 ◽  
Vol 145 (3) ◽  
pp. 496-504 ◽  
Author(s):  
Runping Han ◽  
Jingjing Zhang ◽  
Pan Han ◽  
Yuanfeng Wang ◽  
Zhenhui Zhao ◽  
...  
Keyword(s):  
Methylene Blue ◽  
Thermodynamic Parameters ◽  
Natural Zeolite ◽  
Methylene Blue Adsorption ◽  
Kinetic And Thermodynamic Parameters

Removal of methylene blue by adsorption on aluminosilicate waste: equilibrium, kinetic and thermodynamic parameters

2016 ◽  
Vol 74 (10) ◽  
pp. 2437-2445 ◽  
Author(s):  
Carlos Alberto Policiano Almeida ◽  
Tânia Marina Palhano Zanela ◽  
Clodoaldo Machado ◽  
Juan Antônio Altamirano Flores ◽  
Luiz Fernando Scheibe ◽  
...  
Keyword(s):  
Methylene Blue ◽  
Thermodynamic Parameters ◽  
Low Cost ◽  
Order Kinetic ◽  
X Ray ◽  
Isotherm Equation ◽  
First Order ◽  
Kinetic And Thermodynamic Parameters ◽  
Langmuir Isotherm Equation ◽  
Pseudo First Order

An aluminosilicate waste (AW) was investigated as adsorbent for methylene blue (MB) dye. AW was characterized by petrography, X-ray diffractometry, X-ray fluorescence, scanning electron microscopy, thermogravimetry and zeta potential measurements. It was found that AW contains kaolinite, and other minor components such as quartz, muscovite, smectite, siderite, pyrite and organic compounds. The chemical composition of AW is mainly SiO2 (49%) and Al2O3 (23%) and it has negative superficial charge above pH 1.73. Adsorption of MB dye was studied in a batch system under different conditions of initial dye concentration, contact time and temperature. The isothermal data from batch experiments were fitted to Langmuir and Freundlich equations, with a better fit shown by the Langmuir isotherm equation. Also, pseudo-first-order, pseudo-second-order and intraparticle diffusion models were considered to evaluate the rate parameters. The experimental data fitted the pseudo-first-order kinetic model best. Thermodynamic parameters were calculated, showing the adsorption to be an endothermic yet spontaneous process, with the activation energy of +37.8 kJ mol–1. The results indicate that AW adsorbs MB efficiently, and can be employed as a low-cost alternative in wastewater treatment for the removal of cationic dyes.

Hollow cellulose-carbon nanotubes composite beads with aligned porous structure for fast methylene blue adsorption

2021 ◽  
Vol 182 ◽  
pp. 750-759
Author(s):  
Fuyuan Ding ◽  
Ping Ren ◽  
Guannan Wang ◽  
Shuping Wu ◽  
Yumin Du ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Methylene Blue ◽  
Porous Structure ◽  
Methylene Blue Adsorption ◽  
Composite Beads

scholarly journals Magnetic Carbon Nanofibers from Horse Manure via Hydrothermal Carbonization for Methylene Blue Adsorption

2019 ◽  
Vol 540 ◽  
pp. 012006
Author(s):  
Napat Kaewtrakulchai ◽  
Ampol Putta ◽  
Warit Pasee ◽  
Kajornsak Fuangnawakij ◽  
Gasidit Panomsuwan ◽  
...  
Keyword(s):  
Methylene Blue ◽  
Carbon Nanofibers ◽  
Hydrothermal Carbonization ◽  
Methylene Blue Adsorption ◽  
Horse Manure ◽  
Magnetic Carbon
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