Feasibility of magnetic nano adsorbent impregnated with activated carbon from animal bone waste: Application for the chromium (VI) removal

2021 ◽  
pp. 111813
Author(s):  
D. Prabu ◽  
P. Senthil Kumar ◽  
B. Senthil Rathi ◽  
S. Sathish ◽  
K. Vijai Anand ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Chromium Vi ◽  
Animal Bone ◽  
Nano Adsorbent

Nano-Adsorbent for Arsenates: Iron Oxyhydroxide Impregnated Microporous Activated Carbon

2014 ◽  
Vol 1 (1) ◽  
pp. 51-58 ◽  
Author(s):  
George Kyzas ◽  
Eleni Deliyanni ◽  
Sotiria Bele ◽  
Kostas Matis
Keyword(s):  
Activated Carbon ◽  
Iron Oxyhydroxide ◽  
Nano Adsorbent

Adsorption of Chromium (VI) from Aqueous Solution by Agricultural Waste Derived Activated Carbon

2013 ◽  
Vol 726-731 ◽  
pp. 2100-2106 ◽  
Author(s):  
Hua Zhang ◽  
Xue Hong Zhang ◽  
Yi Nian Zhu ◽  
Shou Rui Yuan
Keyword(s):  
Aqueous Solution ◽  
Activated Carbon ◽  
Agricultural Waste ◽  
Order Kinetic ◽  
Chromium Vi ◽  
Initial Ph ◽  
Order Kinetic Model ◽  
Grapefruit Peel ◽  
Pseudo Second Order ◽  
C 30

Activated carbon prepared from grapefruit peel, an agricultural solid waste by-product, has been used for the adsorption of Cr(VI) from aqueous solution. The effects of adsorbent dosage, pH and temperature on adsorption of Cr(VI) were investigated. The maximum adsorption yield was obtained at the initial pH of 3. The dynamical data fit very well with the pseudo-second-order kinetic model and the calculated adsorption capacities (23.98, 24.33 and 24.81 mg/g) were in good agreement with experiment results at 20°C, 30°C and 40 °C for the 100 mg/L Cr(VI) solution. The Freundlich model (R2 values were 0.9198-0.9871) fitted adsorption data better than the Langmuir model. The calculated parameters confirmed the favorable adsorption of Cr(VI) on the activated carbon prepared from grapefruit peel.

Use of Coconut Shell-Based Activated Carbon for Chromium (VI) Removal

1989 ◽  
Vol 21 (12) ◽  
pp. 1701-1704 ◽  
Author(s):  
G. J. Alaerts ◽  
V. Jitjaturunt ◽  
P. Kelderman
Keyword(s):  
Activated Carbon ◽  
Coconut Shell ◽  
Chromium Vi

scholarly journals Equilibrium and kinetic studies on adsorption of chromium(VI) onto pine-needle-generated activated carbon

2019 ◽  
Vol 1 (12) ◽  
Author(s):  
George M. Ayoub ◽  
Ahmad Damaj ◽  
Houssam El-Rassy ◽  
Mahmoud Al-Hindi ◽  
Ramez M. Zayyat
Keyword(s):  
Activated Carbon ◽  
Kinetic Studies ◽  
Pine Needle ◽  
Chromium Vi

Adsorption of chromium (VI) from aqueous solutions on activated carbon

1994 ◽  
Vol 30 (9) ◽  
pp. 191-197 ◽  
Author(s):  
R. Leyva Ramos ◽  
A. Juarez Martinez ◽  
R. M. Guerrero Coronado
Keyword(s):  
Activated Carbon ◽  
Adsorption Isotherm ◽  
Adsorption Capacity ◽  
Ph Effect ◽  
Freundlich Isotherm ◽  
Maximum Adsorption Capacity ◽  
Experimental Adsorption ◽  
Ph Values ◽  
Chromium Vi ◽  
Adsorption Data

The adsorption isotherm of chromium (VI) on activated carbon was obtained in a batch adsorber. The experimental adsorption data were fitted reasonably well to the Freundlich isotherm. The effect of pH on the adsorption isotherm was investigated at pH values of 4, 6, 7, 8, 10 and 12. It was found that at pH < 6, Cr(VI) was adsorbed and reduced to Cr(III) by the catalytic action of the carbon and that at pH ≥ 12, Cr(VI) was not adsorbed on activated carbon. Maximum adsorption capacity was observed at pH 6 and the adsorption capacity was diminished about 17 times by increasing the pH from 6 to 10. The pH effect was attributed to the different complexes that Cr(VI) can form in aqueous solution. The adsorption isotherm was also affected by the temperature since the adsorption capacity was increased by raising the temperature from 25 to 40°C. It was concluded that Cr(VI) was adsorbed significantly on activated carbon at pH 6 and that the adsorption capacity was greatly dependent upon pH.

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