Production and comparison of high surface area bamboo derived active carbons
Production and comparison of high surface area bamboo derived active carbons
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DOI：
10.1016/j.biortech.2008.04.076
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发表时间：
2008-12-01
影响因子：
11.4
通讯作者：
McKay, G.
中科院分区：
文献类型：
--
作者：
Ip, A. W. M.;Barford, J. P.;McKay, G.
以天然生物材料竹子为原料，以磷酸为活化剂制备高比表面积活性炭。研究了磷酸浸渍比、活化温度、升温速率对炭的比表面积、孔隙率和质量收率的影响。研究了比表面积分别为1337、1628和2123 m2/g的3种竹源活性炭对酸性红18染料的吸附性能，并与传统的活性炭F400、骨炭和泥炭进行了比较。使用Langmuir分析等温线数据。Freundlich、Redlich-Peterson和Langmuir-Freundlich等温线。不同的等温线提供了最好的拟合相关性的吸附实验数据，但朗缪尔-弗罗因德利希方程提供了最好的整体相关性的数据。其中两种竹源炭的吸附容量远大于其他三种吸附剂。(C)2008爱思唯尔有限公司保留所有权利。
High surface area activated carbons have been produced from the natural biomaterial bamboo, using phosphoric acid as the activating agent. The effects of phosphoric acid impregnation ratio, activation temperature, heating rate on the carbon surface area, porosity and mass yield are presented. Three of these bamboo derived active carbons, surface areas 1337,1628 and 2123 m(2)/g were assessed for their ability to adsorb Acid Red 18 dye from aqueous solution; these results were compared with three conventional adsorbents: activated carbon F400, bone char and peat. Isotherm data were analysed using Langmuir. Freundlich, Redlich-Peterson and Langmuir-Freundlich isotherms. Different isotherms provided the best fit correlations to the adsorption experimental data but the Langmuir-Freundlich equation provided the best overall correlation of data. The adsorption capacities of two of the selected bamboo derived carbons were much greater than the capacities of the other three adsorbents. (C) 2008 Elsevier Ltd. All rights reserved.