• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Arabian Journal for Science and Engineering >Optimal Pseudo-Average Order Kinetic Model for Correlating the Removal of Nickel Ions by Adsorption on Nanobentonite
【24h】

Optimal Pseudo-Average Order Kinetic Model for Correlating the Removal of Nickel Ions by Adsorption on Nanobentonite

机译：纳米膨润土吸附对镍离子去除相关的最佳伪平均阶动力学模型

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Batch kinetic experiments were performed for the sorption of nickel ions onto nanobentonite. The kinetic data were adjusted with pseudo-first-order and pseudo-second-order kinetics by linear and nonlinear regressions in addition to some fixed suggested fractional orders 1/2 = n = 5/2. The removal process was found to be well explained by nonlinear pseudo-second-order kinetic expression with 0.5222 mg g(-1) standard deviation, whereas linear regression is improper method for obtaining the kinetic parameters of the studied models specially at lower order values. The kinetic rate constants were increased with the value of the prefixed reaction pseudo-order giving optimal pseudo-average order equal to 3.522 with standard deviation 0.0815 mg g(-1). This optimal value is estimated at infinite time which is physically become closer to the reality of the studied system. Nevertheless, the theoretical removal capacity (22.95 mg g(-1)) calculated by optimal order value is greater than the experimental one (19.15 mg g(-1)). This behavior can be attributed to the rapidity of the process to reach the equilibrium state.
机译：进行批动力学实验以将镍离子吸附到纳米膨润土上。除了一些固定的建议分数阶1/2 <= n <= 5/2以外，还通过线性和非线性回归用伪一阶和伪二阶动力学调整了动力学数据。去除过程被很好地解释为非线性假二阶动力学表达式，标准偏差为0.5222 mg g（-1），而线性回归是不合适的方法，特别是在较低阶值下获得研究模型的动力学参数。动力学速率常数随前缀反应假顺序的值而增加，从而给出最佳假平均顺序等于3.522，标准偏差为0.0815 mg g（-1）。该最佳值是在无限长的时间估算出来的，实际上它在物理上更接近于所研究系统的实际情况。但是，通过最佳订购量计算出的理论去除量（22.95 mg g（-1））大于实验值（19.15 mg g（-1））。这种行为可以归因于达到平衡状态的过程的快速性。

著录项

  • 来源
    《Arabian Journal for Science and Engineering》 |2019年第1期|159-168|共10页
  • 作者

    Alakhras Fadi; Ouerfelli Noureddine; Al-Mazaideh Ghassab; Ababneh Taher; Al-Abbad Eman; Abouzeid Fatma;

  • 作者单位

    Imam Abdulrahman Bin Faisal Univ, Dept Chem, Coll Sci, POB 1982, Dammam 31441, Saudi Arabia;

    Imam Abdulrahman Bin Faisal Univ, Dept Chem, Coll Sci, POB 1982, Dammam 31441, Saudi Arabia|Univ Tunis El Manar, Lab Biophys & Med Technol LR13ES07, ISTMT, 9 Ave Dr Zouhaier Essafi, Tunis 1006, Tunisia;

    Tafila Tech Univ, Dept Chem & Chem Technol, Fac Sci, POB 179, Tafila 66110, Jordan;

    Tafila Tech Univ, Dept Chem & Chem Technol, Fac Sci, POB 179, Tafila 66110, Jordan;

    Imam Abdulrahman Bin Faisal Univ, Dept Chem, Coll Sci, POB 1982, Dammam 31441, Saudi Arabia;

    Imam Abdulrahman Bin Faisal Univ, Dept Chem, Coll Sci, POB 1982, Dammam 31441, Saudi Arabia|Alexandria Univ, Dept Chem, Fac Sci, POB 2, Alexandria 21568, Egypt;

  • 收录信息 美国《科学引文索引》(SCI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Nickel removal; Kinetic modeling; Pseudo-first order; Pseudo-second order; Fractional order;

    机译：镍去除;动力学建模;拟一阶;拟二阶;分形阶;

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号