Preparation of silver nanoparticle loaded on activated carbon and its application for removal of malachite green from aqueous solution

2016 ◽  
pp. 00-00 ◽  
Author(s):  
K. Mortazavi ◽  
H. Rajabi ◽  
A. Ansari ◽  
M. Ghaedi ◽  
K. Dashtian
Keyword(s):  
Aqueous Solution ◽  
Activated Carbon ◽  
Malachite Green ◽  
Silver Nanoparticle

scholarly journals Biosorption Studies for the Removal of Malachite Green from its Aqueous Solution by Activated Carbon Prepared from Cassava Peel

2011 ◽  
Vol 8 (s1) ◽  
pp. S61-S66 ◽  
Author(s):  
C. Parvathi ◽  
T. Maruthavanan ◽  
S. Sivamani ◽  
C. Prakash
Keyword(s):  
Aqueous Solution ◽  
Activated Carbon ◽  
Malachite Green ◽  
Dye Removal ◽  
Agricultural Waste ◽  
Raw Material ◽  
Textile Effluent ◽  
Malachite Green Dye ◽  
Health Related ◽  
Cassava Peel

The association of dyes with health related problems is not a new phenomenon. The effectiveness of carbon adsorption for dye removal from textile effluent has made it an ideal alternative to other expensive treatment methods. The preparation of activated carbon from agricultural waste could increase economic return and reduce pollution. Cassava peel has been used as a raw material to produce activated carbon. The study investigates the removal of malachite green dye from its aqueous solution. The effects of condition such as adsorbent dosage, initial dye concentration, pH and contact time were studied. The adsorption capacity was demonstrated as a function of time for malachite green from aqueous solution by the prepared activated carbon. The results showed that as the amount of the adsorbent was increased, the percentage of dye removal increased accordingly. Higher adsorption percentages were observed at lower concentrations of malachite green dye. Silver nitrate treated cassava peel showed a better performance compared to Sulphuric acid treated and raw carbons, thus making it an interesting option for dye removal textile effluent.

scholarly journals Adsorption Kinetics of Malachite Green Dye Removal from Aqueous Solution by using Banana Stem

2021 ◽  
Vol 10 (5) ◽  
pp. 215-220
Author(s):  
K Arun Kumar ◽  
Sandeep. S,
Keyword(s):  
Aqueous Solution ◽  
Activated Carbon ◽  
Malachite Green ◽  
Dye Removal ◽  
Agricultural Waste ◽  
Research Work ◽  
Isotherm Models ◽  
Maximum Adsorption Capacity ◽  
Malachite Green Dye ◽  
Banana Stem

This research work goals at searching the effectiveness of Malachite Green dye removal using banana stem, an agricultural waste as an activated carbon. The banana stem activated carbon was made ready in the laboratory by carbonization followed by activation. Adsorption studies were carried out to check the effect of various experimental conditions like different pH values, varying contact time, initial concentration of dye and changing banana stem carbon dosage on the removal of Malachite Green dye from aqueous solution at constant Temperature and agitation speed. The equilibrium experimental data were used for applicability of Langmuir and Freundlich isotherm models and the kinetic models. Batch test showed that maximum of 99% of dye was removed when the dye concentration was 2 mg/L, at an adsorbent dose of 0.75 gm/L at dye pH 8 in 45 minutes. From the obtained results it is validated that the equilibrium data’s favorable for both Freundlich and Langmuir isotherms. Maximum adsorption capacity of banana stem carbon on malachite green dye was found to be 8.29 mg/g. It was prevailing that the adsorption process followed the pseudo-second-order rate kinetics. It was observed that intra particle diffusion is not the only rate-limiting step in this adsorption system but also regression results indicate that the linear regression model gives the best results. The above observations recommend that Banana stem carbon can be competently implemented for removal of malachite green dye from aqueous solution in the adsorption treatment processes.

Adsorption of Malachite Green on Heishan Coal-Based Activated Carbon

2011 ◽  
Vol 396-398 ◽  
pp. 2384-2387
Author(s):  
Mao Sheng Tao ◽  
De Lian Yi ◽  
Lin Wu ◽  
Zhao Hui Ouyang ◽  
Hui Min Zhang ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Activated Carbon ◽  
Malachite Green ◽  
Chemical Activation ◽  
Freundlich Isotherm ◽  
Bet Surface Area ◽  
Sem Image ◽  
Effects Of Ph ◽  
Equilibrium Data ◽  
Adsorption Equilibrium Data

Subscript textAn adsorbent has been prepared from Heishan coal by chemical activation with KOH, the activated carbon has a BET surface area of 801.53 m2/g, the meso-pore ratio is 89.63%, SEM image shows that it is very rich in pore structure. The activated carbon was used to adsorb malachite green from an aqueous solution in room temperature. The effects of pH, contact time and dosage have been studied. The results show that the adsorption of malachite green from aqueous solution onto Heishan coal-based activated carbon proceeds according to the pseudo-second-order model, the adsorption equilibrium data were better represented by the Langmuir isotherm than Freundlich isotherm.

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