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- Title
Equilibrium, kinetics, and optimization studies of methylene blue removal from aqueous solution using corn stalk wastes.
- Authors
Mousavi, Seyyed Alireza; Moshashaei, Mahbubeh; Abtin, Vahideh
- Abstract
Methylene blue (MB) removal from aqueous solution has been investigated using corn stalk wastes as an available and low-cost adsorbent. The adsorbent was characterized using scanning electron microscopy, Brunauer-Emmett-Teller, and Fourier-transform infrared spectroscopy. The effects of independent variables and their interaction have been optimized using central composite design (CCD) through response surface methodology. The statistical analysis of data through analysis of variance showed that the experimental data of CCD are fitted with a second-order polynomial regression. The maximum MB removal efficiency of 98% was observed at an initial concentration of 10 mg dye/L, adsorbent dosage of 1.4 g/L, contact time of 50 min and pH 11. Kinetics and isotherm studies indicated that the experimental data can be well presented and described by the pseudo-second-order and Langmuir models, respectively. The produced activated carbon from corn stalk wastes as a cheap and available adsorbent can be considered as an appropriate method for dye removal from aqueous environment.
- Subjects
METHYLENE blue; CORNSTALKS; AQUEOUS solutions; RESPONSE surfaces (Statistics); SCANNING electron microscopy; COLOR removal (Sewage purification)
- Publication
Desalination & Water Treatment, 2022, Vol 264, p224
- ISSN
1944-3994
- Publication type
Article
- DOI
10.5004/dwt.2022.28561