Adsorption Behavior of Methyl Orange onto Modified Ultrafine Coal Powder

刘转年; 周安宁; 王贵荣; 赵晓光

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Adsorption Behavior of Methyl Orange onto Modified Ultrafine Coal Powder

Updated：2026-01-06

- Adsorption Behavior of Methyl Orange onto Modified Ultrafine Coal Powder
- Chinese Journal of Chemical Engineering Vol. 17, Issue 6, Pages: 942-948(2009)
- Affiliations：
  
  1. College of Geology and Environment, Xi'an University of Science & Technology,Xi'an,China,710054
  2. College of Chemistry and Chemical Engineering, Xi'an University of Science & Technology,Xi'an,China,710054
- Author bio：
- Funds：
- DOI：
  CLC：
- Published：2009
- Accepted：
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LIU Zhuannian, ZHOU Anning, WANG Guirong, ZHAO Xiaoguang. Adsorption Behavior of Methyl Orange onto Modified Ultrafine Coal Powder[J]. , 2009, 17(6): 942-948.
DOI：

LIU Zhuannian, ZHOU Anning, WANG Guirong, ZHAO Xiaoguang. Adsorption Behavior of Methyl Orange onto Modified Ultrafine Coal Powder[J]. , 2009, 17(6): 942-948. DOI：

摘要

Abstract

The adsorption of methyl orange onto ultrafine coal powder(UCP) and modified ultrafine coal powder(MUCP) from aqueous solutions were studied

in which the influence of contact time

dosage

temperature

and methyl orange concentration in the solution were investigated.The adsorption kinetics of methyl orange by UCP and MUCP can be described by the Lagergren first-order and pseudo second-order kinetic models

respectively.The adsorption isotherms of methyl orange onto MUCP at 303

313 and 323 K follow the Freundlich and Langmuir isotherm equation.Values of Δ

for methyl orange adsorption onto MUCP are -22.55

-23.10 and -23.79 kJ·mol

-1

at 303

313

and 323 K

respectively.The values of Δ

and Δ

are Δ3.74 kJ·mol

-1

and 61.99 J·mol

-1

respectively.The adsorption process is spontaneous and exothermic.

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