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- Title
Adsorption properties of reactive dyes on the activated carbon from corn straw prepared by microwave pyrolysis.
- Authors
Xiaoli Ren; Shangwen Wang; Yuqiang Jin; Defei Xu; Hongbing Yin
- Abstract
A low cost activated carbon from corn straw was prepared by dry pyrolysis using the microwave, the SBET of activated carbon was 937 m2 g-1. The adsorption of Reactive Brilliant Yellow K-6G and Reactive Brilliant Red K-2BP on the activated carbon from corn straw were investigated. Four types of kinetic models and three types of isotherms were used to fit the experimental data. The results showed that the adsorption of RBY K-6G and RBR K-2BP on the activated carbon from corn straw both followed the pseudo-second-order kinetic model and Langmuir isotherm. The enthalpy change (ΔH°) and Gibbs free energy (ΔG°) are calculated, ΔH° > 0 and ΔG° < 0 suggested that the adsorption process was endothermic and spontaneous in nature.
- Subjects
CORN straw; ACTIVATED carbon; REACTIVE dyes; ADSORPTION (Chemistry); MICROWAVES; MICROWAVE heating; LANGMUIR isotherms
- Publication
Desalination & Water Treatment, 2020, Vol 200, p296
- ISSN
1944-3994
- Publication type
Article
- DOI
10.5004/dwt.2020.26131