Journal
CHEMISTRY AND ECOLOGY
Volume 30, Issue 5, Pages 473-490Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/02757540.2013.877001
Keywords
activated carbon; activated maize tassel; adsorption isotherm; methylene blue; steam activation
Funding
- University of Johannesburg
Ask authors/readers for more resources
In this paper, steam-produced activated carbon (STAC) from maize tassel (MT) was evaluated for its ability to remove basic dye (methylene blue MB) from aqueous solution in a batch adsorption process. The equilibrium experiments were conducted in the range of 50-300 mg/L initial MB concentrations at 30 degrees C, for effect of pH, adsorbent dosage and contact time. The experimental data were analysed by Langmuir, Freundlich and Temkin isotherm models of adsorption. Freundlich adsorption isotherm was found to have highest value of R-2(R-2 = 0.97) compared to other models of Langmuir and Temkin having (0.96 and 0.95 respectively). STAC has a high adsorptive capacity for MB dye (200 mg/g) and also showed favourable adsorption for the dye with the separation factor (R-L < 1) for the dye-activated carbon system. The kinetic data obtained were analysed using pseudo first-order kinetic equation and pseudo second-order kinetic equation. The experimental data fitted well into pseudo second-order kinetic equation, as demonstrated by the high value of R-2.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available