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Preparation and characterization of an activated carbon from a date stones variety by physical activation with carbon dioxide

机译:通过用二氧化碳进行物理活化来从大枣核品种制备和表征活性炭

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摘要

Activated carbons are commonly used in the treatment of waste water, namely as decontaminating agent of phenolic compounds. This work deals with the preparation of an activated carbon from an abundant local variety of date stones know Ghars. This natural product is largely exploited as a principal nutriment for animals alimentation. Two steps of the activation process are involved in this study, first, a physical treatment by carbon dioxide and second, the characterization of the resulting activated carbon followed by modelization procedure using 4-chlorophenol as test substrate. On the basis of the BET results, we have obtained a specific surface of 604 m~2/g and microspores volumes of 0.29 cm~3 g~(-1), In addition, the adsorption capacity was about 28.57 mg/g according to Langmuir model. The physical activation method utilized in this task was achieved by using carbon dioxide. Textural characteristics of the resulting activated carbon were carried out by nitrogen adsorption at 77 K along with application of BET equation for determination of surface area. Total volume of pores was determined by as method. External surface area, micropore area and micropore volume were determined by t-plot method. The comparison of raw material, pyrolysat vis-a-vis the activated carbon was based on the elemental analysis of the principal elements. The adsorption capacity of the different prepared activated carbons was tested by using 4-chlorophenol as substrate.
机译:活性炭通常用于废水的处理,即作为酚类化合物的去污剂。这项工作涉及从加尔斯(Ghars)已知的大量当地枣核宝石中制备活性炭。该天然产物被广泛用作动物营养的主要营养。这项研究涉及活化过程的两个步骤,首先是用二氧化碳进行物理处理,其次是表征所得的活性炭,然后使用4-氯苯酚作为测试底物进行建模。根据BET结果,我们获得了604 m〜2 / g的比表面积和0.29 cm〜3 g〜(-1)的小孢子体积,此外,根据吸附法,吸附量约为28.57 mg / g。朗缪尔模型。通过使用二氧化碳来实现此任务中使用的物理激活方法。所得活性炭的结构特征是通过在77K下用氮吸附以及应用BET方程确定表面积来进行的。通过方法确定孔的总体积。通过t-图法测定外表面积,微孔面积和微孔体积。原料裂解物与活性炭的比较是基于主要元素的元素分析。以4-氯苯酚为底物,测试了制备的不同活性炭的吸附能力。

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  • 来源
    《Journal of Analytical & Applied Pyrolysis》 |2013年第1期|155-160|共6页
  • 作者单位

    Laboratoire de Biogeochimie en Milieux Desertiques, Faculte des Sciences et Technologie et Sciences de la matiere, Universite Kasdi Merbah Ouargla, BP511,30000 Ouargla. Algeria;

    Laboratoire de Biogeochimie en Milieux Desertiques, Faculte des Sciences et Technologie et Sciences de la matiere, Universite Kasdi Merbah Ouargla, BP511,30000 Ouargla. Algeria;

    University Claude Bernard Lyon1, CNRS. Laboratoire de Genie des Procedes Catalytiques, CPE Lyon 43 bd du 11 novembre 1918. BP 82077, 69616 Villeurbanne Cedex, France;

    Laboratoire de Biogeochimie en Milieux Desertiques, Faculte des Sciences et Technologie et Sciences de la matiere, Universite Kasdi Merbah Ouargla, BP511,30000 Ouargla. Algeria;

    University Claude Bernard Lyon1, CNRS. Laboratoire de Genie des Procedes Catalytiques, CPE Lyon 43 bd du 11 novembre 1918. BP 82077, 69616 Villeurbanne Cedex, France;

    Department of Chemistry, College of Education, Ibn Al-Haytham,University of Baghdad, Baghdad, Iraq;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    date stones; pyrolysis; activated carbon; physical activation; langmuir isotherm;

    机译:枣石;热解活性炭;身体激活;朗缪尔等温线;

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