Journal of Northeastern University Natural Science ›› 2015, Vol. 36 ›› Issue (1): 73-76.DOI: 10.12068/j.issn.1005-3026.2015.01.016

• Materials & Metallurgy • Previous Articles     Next Articles

Adsorption Kinetics of Methylene Blue on CaTiO3

HAN Chong, YANG He, XUE Xiang-xin   

  1. School of Materials & Metallurgy, Northeastern University, Shenyang 110819, China.
  • Received:2013-12-16 Revised:2013-12-16 Online:2015-01-15 Published:2014-11-07
  • Contact: HAN Chong
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Abstract: The effects of CaTiO3 dosage, solution pH value,and initial methylene blue (MB) mass concentration on equilibrium adsorption rate of MB on CaTiO3 were experimentally investigated in detail. The adsorption isotherm of MB on CaTiO3 was also discussed. The results showed that CaTiO3 dosage has little effect on equilibrium adsorption rate of MB. The equilibrium adsorption rate of MB on CaTiO3 at the solution pH value of 7 is greater than that at the solution pH values of 4 and 10, suggesting that neutral condition is in favor of the adsorption of MB on CaTiO3. The equilibrium adsorption rate of MB on CaTiO3 decreases significantly with increasing initial mass concentration of MB. The adsorption of MB on CaTiO3 follows the Langmuir adsorption isotherm and the adsorption saturation capacity of MB on CaTiO3 is 1.64mg/g.

Key words: CaTiO3, methylene blue, adsorption rate, adsorption isotherm, kinetics

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