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- Title
Dye removal using carbonized biomass, isotherm and kinetic studies.
- Authors
Ahmad, Muhammad; Bachmann, Robert Thomas; Khan, Misbahul Ain; Edyvean, Robert G. J.; Farooq, Umar; Athar, Muhammad Makshoof
- Abstract
Effect of thermal treatment on green tea dredge, an abundant waste, for dye removal was investigated in the present study. Variable temperature (800 and 900˚C) and residence time in furnace (10 min, 1 and 2 h) were used to prepare six adsorbents which were characterized for surface morphology. The adsorption study was carried out using methylene blue as a model molecule and the effect of shaking time, pH and concentration was determined. Adsorbents prepared at 900˚C were found to be more effective than those prepared at 800˚C while longer residence time in furnace yielded adsorbents with higher adsorption capacity. The maximum adsorption capacity achieved in this case study was 71.4 ± 4.6 mg/g which is better than many activated carbons derived from other materials. Langmuir model was a better fit in isotherm studies while the sorption process followed pseudo-secondorder kinetics.
- Subjects
ADSORPTION capacity; ACTIVATED carbon; ATMOSPHERIC temperature; GREEN tea; SURFACE morphology
- Publication
Desalination & Water Treatment, 2015, Vol 53, Issue 8, p2289
- ISSN
1944-3994
- Publication type
Article
- DOI
10.1080/19443994.2013.867818