Rice straw-derived activated carbons for the removal of carbofuran from an aqueous solution

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Title:	Rice straw-derived activated carbons for the removal of carbofuran from an aqueous solution
Authors:	林俊宏;Lin, Jun-Hong;Chang, Ken-Lin;Chen, Chih-Cheng;Hsien, Jung-Feng;Wang, Yin;Zhao, Feng;Shih, Yi-Hsuan;Xing, Zhen-jiao;Chen, Shui-Tein
Contributors:	自然生物科技學系
Keywords:	Rice straw;Carbofuran;Activated carbon;Adsorption isotherm;Kinetics
Date:	2014-02
Issue Date:	2018-10-03 11:45:04 (UTC+8)
Abstract:	Activated carbon was prepared from rice straw by carbonization and KOH activation, and was used as an adsorbent for the removal of a kind of pesticide, carbofuran (2,3-dihydro-2,2-dimethylbenzofuran-7-yl methylcarbamate) from aqueous solution. The effects of the initial carbofuran concentration, contact time, temperature and pH, on its adsorption capacity and kinetics were studied using a batch method. The surface area and average pore diameter of the activated carbon were 1304.8 m2/g and 2.39 nm, respectively. The maximum adsorption capacity of the activated carbon (296.52 mg/g) for carbofuran was found to occur at 90 min, 30 °C and 200 mg/L initial carbofuran concentration with an adsorbent loading of 100 mg/L. Equilibrium adsorption isotherms were fitted better by the Langmuir model than the Freundlich and Temkin models. The adsorption follows a pseudo-second-order kinetics model.
Relation:	New Carbon Materials vol. 29, no. 1 pp.47-54
Appears in Collections:	[Department of Natural Biotechnology] Periodical Articles

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