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The use of semi-coke for phenol removal from aqueous solutions

  • Carbon Letters
  • Abbr : Carbon Lett.
  • 2021, 31(5), pp.1023-1032
  • DOI : 10.1007/s42823-020-00216-z
  • Publisher : Korean Carbon Society
  • Research Area : Natural Science > Natural Science General > Other Natural Sciences General
  • Received : March 23, 2020
  • Accepted : December 15, 2020
  • Published : October 1, 2021

Krasnova Tamara A. 1 Gora Natalia V. 1 Belyaeva Oxana V. 1 Gorelkina Alena K. 1 Golubeva Nadezhda S. 1 Timoshchuk Irina V. 1

1Kemerovo State University

Accredited

ABSTRACT

The paper deals with a comparative study of equilibrium and kinetics of phenol adsorption from aqueous solutions by means of commercial activated carbons and semi-cokes, difering in the nature of feedstock, production technology and structural characteristics. The main adsorption parameters are calculated with the usage of Langmuir and Dubinin–Radushkevich equations. The change in the characteristics of the structure and state of the surface of semi-coke P2 as a result of modifcation is estimated. It was found that phenol adsorption kinetics is described by a pseudo-second-order model. The adsorption rate constants and the coefcient of external difusion mass transfer are calculated. It is proved that phenol extraction from aqueous solutions presents a mixed-difusion nature, and the process rate is limited by external mass transfer for 13 min for SKD-515 and 22 min for ABG. To increase the adsorption capacity, the oxidative modifcation of the semi-coke P2 was carried out. Considering the economic and technological aspects, ABG semi-coke is recognized as a promising sorbent for phenol extraction from aqueous media.

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Total Citation Counts(KCI+WOS) (5) This is the number of times that the duplicate count has been removed by comparing the citation list of WoS and KCI.

Scopus Citation Counts (5) This is the result of checking the information with the same ISSN, publication year, volume, and start page between articles in KCI and the SCOPUS journals. (as of 2023-10-01)

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