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Adsorption of 2,4-dichlorophenol from aqueous solution by activated carbon derived from moso bamboo processing waste

Articles

Revue/Conférence:

DESALINATION AND WATER TREATMENT

Language:

English

Auteur:

Sun Xinyuan; Hui Hui; Zhang Xin; Yan Jie

Experts:

Wu Guangqian; Zhang Qisheng

Année:

2013

Volume:

51

Numéro:

22-24

Pages:

4603-4612

Mots-clés:

Moso bamboo; Activated carbon; Adsorption; 2,4-Dichlorophenol

The surface physical and chemical properties of activated carbon derived from moso bamboo processing waste (ACMB) were investigated using scanning electron microscopy, N-2 adsorption/desorption isotherm, Fourier transform infrared spectroscopy, and X-ray photoelectron spectroscopy (XPS). The adsorption characteristics of 2,4-dichlorophenol(2,4-DCP) on ACMB were also evaluated from various perspectives. The ACMB with particle size of 10-16 mesh was found to be suitable for adsorbing 2,4-DCP, and the adsorption capacity decreased considerably with increasing solution pH. The adsorption of 2,4-DCP on ACMB was fast initially, and the adsorption equilibrium could be reached within 480min. The kinetic data could be best described by the pseudo-second-order model. The equilibrium data followed Langmuir and R-P isothermal models more precisely. The column adsorption results showed that the ACMB had a long term and stable ability to purify 2,4-DCP-containing wastewater and the saturated ACMB could be regenerated easily by NaOH solution.