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Preparation of activated carbon fromDipterocarpus alatusfruit and its application for methylene blue adsorption

机译：活性炭的制备来自二哌啶族菌果实及其对亚甲基蓝吸附的应用

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摘要

Activated carbons were prepared from three parts ofDipterocarpus alatusfruit (wing, endocarp and pericarp), an abundant and renewable waste in Southeast Asia, by chemical activation using ZnCl2, FeCl3, H(3)PO(4)and KOH and physical activation using CO(2)and steam. This study indicated that activated carbon prepared fromDipterocarpus alatusfruit could be employed as a promising adsorbent for the removal of methylene blue from aqueous solution. ZnCl(2)activation led to an activated carbon with a surface area of 843 m(2)g(-1)and was able to remove methylene blue from aqueous solution. Adsorption studies were performed and analysed using Langmuir and Freundlich isotherm equations. Adsorption data demonstrated an excellent fit with the Langmuir isotherm model, with the maximum adsorption capacity of 269.3 mg g(-1)at equilibrium. Pseudo-first order and pseudo-second order kinetic models were used in this study to describe the adsorption mechanism. The results show that methylene blue adsorption is pseudo-second order, indicating that liquid film diffusion, intra-particle diffusion and surface adsorption coexisted during methylene blue adsorption on the activated carbon. The activated carbon prepared fromDipterocarpus alatusfruit is a low cost and effective adsorbent with a fast rate for the removal of methylene blue from aqueous solutions when compared with a number of activated carbons studied in the literature.
机译：活性炭从使用氯化锌，氯化铁，H（3）使用CO（PO（4）和KOH和物理活化三个部分ofDipterocarpus alatusfruit（翼，内果皮和果皮），在东南亚的丰富的和可再生的浪费，通过化学活化制备的2）和蒸汽。这项研究表明，活性炭制备fromDipterocarpus alatusfruit可以用作用于从水溶液中除去亚甲蓝的有希望的吸附剂。导致与843米（2）克（-1）的表面积的活性炭和氯化锌（2）的激活能够从水溶液除去亚甲蓝。进行，并使用Langmuir和Freundlich等温线方程分析吸附研究。吸附数据显示优异的配合Langmuir等温模式，用在平衡的269.3毫克克（-1）的最大吸附能力。准一级和准二级动力学模型在本研究中用来描述吸附机理。结果表明，亚甲基蓝吸附是伪二阶，表明液膜扩散，颗粒内扩散和表面吸附亚甲基蓝吸附在活性炭上的过程中共存。活性炭制备fromDipterocarpus当与许多在文献中研究的活性炭相比alatusfruit是一种低成本且有效的吸附剂具有快速率为从水溶液中去除亚甲基蓝的。

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  • 来源
    《RSC Advances》 |2020年第36期|共10页
  • 作者

    Patawat Chantakorn; Silakate Ketsara; Chuan-Udom Somchai; Supanchaiyamat Nontipa; Hunt Andrew J.; Ngernyen Yuvarat;

  • 作者单位

    Khon Kaen Univ Dept Chem Engn Biomass Sc Bioenergy Res Lab Fac Engn Khon Kaen 40002 Thailand;

    Khon Kaen Univ Dept Chem Engn Biomass Sc Bioenergy Res Lab Fac Engn Khon Kaen 40002 Thailand;

    Khon Kaen Univ Dept Agr Engn Fac Engn Khon Kaen 40002 Thailand;

    Khon Kaen Univ Mat Chem Res Ctr Dept Chem Fac Sci Khon Kaen 40002 Thailand;

    Khon Kaen Univ Mat Chem Res Ctr Dept Chem Fac Sci Khon Kaen 40002 Thailand;

    Khon Kaen Univ Dept Chem Engn Biomass Sc Bioenergy Res Lab Fac Engn Khon Kaen 40002 Thailand;

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