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Thermodynamic and Kinetic Studies of Effective Adsorption of 2,4,6-trichlorophenol onto Calcine Mg/Al-CO_3 Layered Double Hydroxide
  • ISSN号:1000-2413
  • 期刊名称:《武汉理工大学学报:材料科学英文版》
  • 分类:O647.3[理学—物理化学;理学—化学] TQ314[化学工程—高聚物工业]
  • 作者机构:College of Chemistry and Chemical Engineering, Central South University, Changsha 410083 China
  • 相关基金:Funded by the National Natural Science Foundation of China(No.21476269)
中文摘要:

2 的吸附, 4, 6-trichlorophenol (TCP ) 到锻烧的 Mg/Al-CO 3 上,分层的双氢氧化物(CLDH ) 被调查。准备 Mg/Al-CO 3 分层的双氢氧化物(LDH ) 和 CLDH 被粉末 X 光检查衍射(XRD ) 和 thermo gravimetric 描绘分析器微分的扫描热量计(TG-DSC ) 。而且, 2,4,6-trichlorophenol (TCP ) 有效地被移开(在 9 h 的 94.7% 移动百分比) 在优化试验性的条件下面。吸附动力学数据适合 pseudo-second-order 模型很好。Freundlich,兰米尔,和 Tempkin 吸附模型在解决方案的不同温度被用于试验性的平衡吸附数据。吸附数据与关联系数的好价值适合 Freundlieh 吸附等温线。吸附过程的机制根据 intraparticle 散开模型的意见被建议,它显示吸附的全面的率能被描述为三步。

英文摘要:

Adsorption of 2, 4, 6-trichlorophenol(TCP) onto the calcined Mg/Al-CO_3 layered double hydroxide(CLDH) was investigated. The prepared Mg/Al-CO_3 layered double hydroxide(LDH) and CLDH were characterized by powder X-ray diffraction(XRD) and thermo gravimetric analyzer-differential scanning calorimeters(TG-DSC). Moreover, 2,4,6-trichlorophenol(TCP) was removed effectively(94.7% of removal percentage in 9h) under the optimized experimental conditions. The adsorption kinetics data fitted the pseudosecond-order model well. The Freundlich, Langmuir, and Tempkin adsorption models were applied to the experimental equilibrium adsorption data at different temperatures of solution. The adsorption data fitted the Freundlieh adsorption isotherm with good values of the correlation coefficient. A mechanism of the adsorption process is proposed according to the intraparticle diffusion model, which indicates that the overall rate of adsorption can be described as three steps.

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期刊信息
  • 《武汉理工大学学报:材料科学英文版》
  • 中国科技核心期刊
  • 主管单位:
  • 主办单位:武汉理工大学
  • 主编:
  • 地址:武汉市洪山区珞狮路122号
  • 邮编:430070
  • 邮箱:jwutms@mail.whut.edu.cn
  • 电话:027-87384113 87651870
  • 国际标准刊号:ISSN:1000-2413
  • 国内统一刊号:ISSN:42-1680/TB
  • 邮发代号:38-78
  • 获奖情况:
  • 国内外数据库收录:
  • 被引量:149