Efficient removal of hazardous malachite green dye from aqueous solutions using H2O2 modified activated carbon as potential low-cost adsorbent: kinetic, equilibrium, and thermodynamic studies

2019 ◽  
Vol 151 ◽  
pp. 167-182 ◽  
Author(s):  
Rahmat Ali ◽  
Tahira Mahmood ◽  
Salah Ud Din ◽  
Abdul Naeem ◽  
Madeeha Aslam ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Aqueous Solutions ◽  
Malachite Green ◽  
Low Cost ◽  
Efficient Removal ◽  
Modified Activated Carbon ◽  
Thermodynamic Studies ◽  
Malachite Green Dye ◽  
Kinetic Equilibrium

scholarly journals Malachite green dye adsorption from model aqueous solutions using corn cob activated carbon (ccac)

2017 ◽  
Vol 62 (4) ◽  
pp. 293-307 ◽  
Author(s):  
Silvia Burcă ◽  
◽  
Cerasella Indolean ◽  
Andrada Măicăneanu ◽  
◽  
...  
Keyword(s):  
Activated Carbon ◽  
Aqueous Solutions ◽  
Malachite Green ◽  
Dye Adsorption ◽  
Corn Cob ◽  
Malachite Green Dye

Exclusion of Organic Dye Using Neoteric Activated Carbon Prepared from Cornulaca monacantha Stem: Equilibrium and Thermodynamics Studies

2016 ◽  
Vol 875 ◽  
pp. 1-15 ◽  
Author(s):  
Arush Sharma ◽  
Gaurav Sharma ◽  
Amit Kumar ◽  
Zia Mahmood Siddiqi ◽  
Gaurav Sharma
Keyword(s):  
Activated Carbon ◽  
Malachite Green ◽  
Low Cost ◽  
Entropy Change ◽  
Sorption Process ◽  
Second Order ◽  
Adsorption Parameters ◽  
Malachite Green Dye ◽  
Endothermic Process ◽  
Pseudo Second Order

In this study, Cornulacamonacantha stem (CMS) has been used for the preparation of highly competent, ecofriendly and low-cost activated carbon (CMSAC) biosorbent. It was characterized by some instrumental techniques such as Fourier transform infrared spectroscopy (FTIR) and scanning electron microscope (SEM). The biosorbent was evaluated for the eradication of hazardous malachite green (MG) dye from aqueous solution. Batch experiments were conducted to assess the effect of various adsorption parameters such initial dye concentration, sorbent dosage, pH, agitation time and temperature. The results indicated that maximum sorption of MG was occurred at the pH ranged from 10.0 to 12.0. Langmuir, Freundlich and Tempkin isotherms were applied for the interpretation of experimental data and Langmuir model was found to be strongly fitted with higher R2 (0.999). The kinetics studies were examined using pseudo-first-order, pseudo-second-order, Elovich model. The sorption process was described by pseudo-second-order kinetics. The thermodynamic parameters such as energy change (ΔG°), enthalpychange (ΔH°) and entropy change (ΔS°) were found to be-6.21kJ/mol, 46.17 kJ/mol and 172.81 J/mol/K, respectively. The adsorption performance of malachite green dye onto gleaming activated carbon developed from Cornulacamonacantha stem was found to be spontaneous, feasible and endothermic process.

Sign in / Sign up

Export Citation Format

Share Document