文章基本信息

标题：Assessment of activated carbon prepared from corncob by chemical activation with phosphoric acid
本地全文：下载
作者：Gamal O. El-Sayed ; Mohamed M. Yehia ; Amany A. Asaad 等
期刊名称：Water Resources and Industry
印刷版ISSN：2212-3717
出版年度：2014
卷号：7-8
页码：1-10
DOI：10.1016/j.wri.2014.10.001
出版社：Elsevier
摘要：Corncob, which is the main waste from corn agricultures in Egypt, has been used as a raw material for the preparation of different activated carbons. Activated carbons (ACs) were prepared by chemical activation with concentrated H3PO4 acid; followed by pyrolysis at 400, 500 and 600 °C. Different ACs have been used for the removal of methylene blue (MB) dye from aqueous solutions. Batch adsorption experiments were performed as a function of initial dye concentration, contact time, adsorbent dose and pH. Adsorption data were modeled using the Langmuir and Freundlich adsorption isotherms. Adsorption of MB on AC1 (R2=0.9868) and AC2 (R2=0.9810) followed Langmuir model with maximum monolayer sorption capacity of 28.65 and 17.57 mg/g, respectively. Adsorption onto AC3 was better fitted to Freundlich isotherm model (R2=0.9823).
关键词：Activated carbon ; Corncob ; Chemical activation ; Adsorption ; Methylene blue